Items where Author is "Nik Ab. Majid, Nik Muhamad"

Tang, Amelia and Haruna, Ahmed Osumanu and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2020) Potential PGPR properties of cellulolytic, nitrogen fixing, phosphate-solubilizing bacteria in rehabilitated tropical forest soil. Microorganisms, 8 (3). pp. 1-21. ISSN 2076-2607

Maru, Ali and Haruna, Ahmed Osumanu and Asap, Audrey and Nik Ab. Majid, Nik Muhamad and Maikol, Nathaniel and Jeffary, Alicia Vanessa (2020) Reducing acidity of tropical acid soil to improve phosphorus availability and Zea mays L. productivity through efficient use of chicken litter biochar and triple superphosphate. Applied Sciences, 10 (6). pp. 1-23. ISSN 2076-3417

Perumal, Palanivell and Ahmed, Osumanu Haruna and Omar, Latifah and Nik Ab. Majid, Nik Muhamad (2020) Adsorption and desorption of nitrogen, phosphorus, potassium, and soil buffering capacity following application of chicken litter biochar to an acid soil. Applied Sciences, 10 (1). art. no. 295. pp. 1-18. ISSN 2076-3417

Hasbullah, Nur Aainaa and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2020) Effects of amending phosphatic fertilizers with clinoptilolite zeolite on phosphorus availability and its fractionation in an acid soil. Applied Sciences, 10 (9). art. no. 3162. pp. 1-15. ISSN 2076-3417

Tang, Amelia and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2020) Potential PGPR properties of cellulolytic, nitrogen-fixing, phosphate-solubilizing bacteria in rehabilitated tropical forest soil. Microorganisms, 8 (3). art. no. 442. pp. 1-22. ISSN 2076-2607

Maru, Ali and Ahmed, Osumanu Haruna and Asap, Audrey and Nik Ab. Majid, Nik Muhamad and Maikol, Nathaniel and Jeffary, Alicia Vanessa (2020) Reducing acidity of tropical acid soil to improve phosphorus availability and Zea mays L. productivity through efficient use of chicken litter biochar and triple superphosphate. Applied Sciences, 10 (6). art. no. 2127. pp. 1-22. ISSN 2076-3417

Mohamed, Johar and Abdul Hamid, Hazandy and Nuruddin, Ahmad Ainuddin and Nik Ab. Majid, Nik Muhamad (2019) Chemical attributes of Gigantochloa scortechinii bamboo rhizome in relation with hydraulic conductance. BioResources, 14 (4). pp. 8155-8173. ISSN 1930-2126

Palanivell, Perumal and Ahmed, Osumanu Haruna and Omar, Latifah and Nik Ab. Majid, Nik Muhamad (2019) Economic viability of including humic substances, chicken litter biochar, and clinoptilolite zeolite in rice cultivation on acid soils. Bulgarian Journal of Agricultural Science, 25 (1). pp. 79-96. ISSN 1310-0351

Hasbullah, Nur Aainaa and Haruna, Ahmed Osumanu and Nik Ab. Majid, Nik Muhamad (2018) Effects of clinoptilolite zeolite on phosphorus dynamics and yield of Zea Mays L. cultivated on an acid soil. PLoS One, 13 (9). pp. 1-19. ISSN 1932-6203

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2018) Improving nutrient use efficiency of maize cultivated on a tropical acid soil using clinoptilolite zeolite. In: Joint Symposium of the 8th International Agriculture Congress 2018 and 6th International Symposium for Food & Agriculture 2018 (8th IAC – 6th ISFA 2018), 13-15 Nov. 2018, Auditorium Rashdan Baba, TNCPI Building, Universiti Putra Malaysia. (pp. 227-230).

Islam, Md. Monirul and Paul, T. K. and Nik Ab. Majid, Nik Muhamad (2018) Organic manure and inorganic fertilizer management for sustainable sweet potato (Ipomoea batatas) production. In: Joint Symposium of the 8th International Agriculture Congress 2018 and 6th International Symposium for Food & Agriculture 2018 (8th IAC – 6th ISFA 2018), 13-15 Nov. 2018, Auditorium Rashdan Baba, TNCPI Building, Universiti Putra Malaysia. (pp. 25-28).

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2017) Enhancing nitrogen availability, ammonium adsorption-desorption, and soil pH buffering capacity using composted paddy husk. Eurasian Soil Science, 50 (12). pp. 1483-1493. ISSN 1064-2293; ESSN: 1556-195X

Kueh, Roland Jui Heng and Nik Ab. Majid, Nik Muhamad and Gandaseca, Seca and Ahmed, Osumanu Haruna and Jemat, Sylvester and Ku, Melvin Kin Kin and Teo, Jimmy Chee Kiong (2017) Evaluation of rehabilitated forest stands development using hemispheric photograph. Journal of Advanced Research Design, 36 (1). 25 - 33. ISSN 2289-7984

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2017) Enhancing nutrients use efficiency and grain yield of Zea mays L. cultivated on a tropical acid soil using paddy husk compost and clinoptilolite zeolite. Bulgarian Journal of Agricultural Science, 23 (3). 418 - 428. ISSN 1310-0351; ESSN: 2534-983X

Palanivell, Perumal and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2017) Minimizing ammonia volatilization from urea in waterlogged condition using chicken litter biochar. Communications in Soil Science and Plant Analysis, 48 (17). 2083 - 2092. ISSN 0010-3624; ESSN: 1532-2416

Nik Jaafar, Nik Mohd Shibli and Mohamed Shazili, Noor Azhar and Nik Ab. Majid, Nik Muhamad (2016) Efficiency and feasibility of Acacia mangium in extracting heavy metals from contaminated soil. In: 13th Universiti Malaysia Terengganu International Annual Symposium on Sustainability Science and Management (UMTAS 2016), 13-15 Dec. 2016, Primula Beach Hotel, Kuala Terengganu. (pp. 158-163).

Perumal, Palanivell and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2016) Minimizing ammonia volatilization from urea, improving lowland rice (cv. MR219) seed germination, plant growth variables, nutrient uptake, and nutrient recovery using clinoptilolite zeolite. Archives of Agronomy and Soil Science, 62 (5). pp. 708-724. ISSN 0365-0340; ESSN: 1476-3567

Jamaluddin, Aiza Shaliha and Abdu, Arifin and Abdul Hamid, Hazandy and Senin, Abdul Latib and Nik Ab. Majid, Nik Muhamad and Jusop, Shamshuddin (2015) Emphasizing the properties of soils occurring in different land used of tropical rainforest inSarawak, Malaysia. In: 3rd International Symposium on Applied Engineering and Sciences (SAES2015), 23-24 Nov. 2015, Universiti Putra Malaysia. (pp. 259-268).

Ch'ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2014) Biochar and compost influence the phosphorus availability, nutrients uptake, and growth of maize (Zea mays L.) in tropical acid soil. Pakistan Journal of Agricultural Sciences, 51 (4). pp. 797-806. ISSN 0552-9034; ESSN: 2076-0906

Azmi, Nurhazirah and Hashim, Puziah and Mat Hashim, Dzulkifly and Halimoon, Normala and Nik Ab. Majid, Nik Muhamad (2014) Anti–elastase, anti–tyrosinase and matrix metalloproteinase–1 inhibitory activity of earthworm extracts as potential new anti–aging agent. Asian Pacific Journal of Tropical Biomedicine, 4 (suppl.1). S348-S352. ISSN 2221-1691

Ch'ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2014) Improving phosphorus availability in an acid soil using organic amendments produced from agroindustrial wastes. The Scientific World Journal, 2014. art. no. 506356. pp. 1-6. ISSN 2356-6140; ESSN: 1537-744X

Perumal, Palanivell and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad (2014) Improving rice (Oryza sativa L. cv. MR219) growth, nutrient uptake and recovery using Clinoptilolite zeolite. In: International Conference on Plant Physiology 2014, 26-28 Aug. 2014, Discovery Kartika Plaza Hotel, Bali, Indonesia. (pp. 269-273).

Hasbullah, Nor Aainaa and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad (2014) Use of clinoptilolite zeolite on selected soil chemical properties, dry matter production, nutrients uptake and use efficiency of Zea mays cultivated on an acid soil. International Journal of Agricultural Research, 9 (3). pp. 136-148. ISSN 1816-4897; ESSN: 2152-2553

Hasbullah, Nur Aainaa and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad (2014) Use of clinoptilolite zeolite to reduce Christmas Island rock phosphate use Zea mays cultivation on an acid soil. International Journal of Soil Science, 9 (2). pp. 55-66. ISSN 1816-4978

Kenzo, Tanaka and Ichie, Tomoaki and Yoneda, Reiji and Tanaka-Oda, Ayumi and Alias, Mohamad Azani and Nik Ab. Majid, Nik Muhamad (2013) Ontogenetic changes in carbohydrate storage and sprouting ability in pioneer tree species in Peninsular Malaysia. Biotropica, 45 (4). pp. 427-433. ISSN 0006-3606; ESSN: 1744-7429

Aldeen, Abdul-Moa'amen Hamood Shoga'a and Nik Ab. Majid, Nik Muhamad and Alias, Mohamad Azani and Abd. Ghani, Awang Noor and Mohamed, Shukri (2013) Agroforestry impacts on soil fertility in the Rima'a Valley, Yemen. Journal of Sustainable Forestry, 32 (3). pp. 286-309. ISSN 1054-9811; ESSN: 1540-756X

Edward, Edkona Jenang and Wong, Sing King and Leong, Stephen Chan Teck and Jiwan, Make and Ab. Aziz, Zakry Fitri and Kundat, Franklin Ragai and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2013) Antagonistic activities of endophytic bacteria against Fusarium wilt of black pepper (Piper nigrum). International Journal of Agriculture and Biology, 15 (2). pp. 291-296. ISSN 1560-8530; ESSN: 1814-9596

Mohammed Aldarraji, Qasim and Halimoon , Normala and Nik Ab. Majid, Nik Muhamad (2013) Antioxidant activity and total phenolic content of earthworm paste of Lumbricus rubellus (red worm) and Eudrilus eugenia (African night crawler). Journal of Entomology and Nematology, 5 (3). pp. 33-37. ISSN 2006-9855

Jamaluddin, Aiza Shaliha and Abdu, Arifin and Abdul Hamid, Hazandy and Akbar, Mohd Hadi and Banga, Trevor Saga and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad (2013) Assessing soil fertility status of rehabilitated degraded tropical rainforest. American Journal of Environmental Sciences, 9 (3). pp. 280-291. ISSN 1553-345X; ESSN: 1558-3910

Nik Jaafar, Nik Mohd Shibli and Nik Ab. Majid, Nik Muhamad and Mohamed Shazili, Noor Azhar and Abdu, Arifin (2013) Assessment of Melaleuca cajuputi as heavy metals phytoremediator for sewage sludge contaminated soil. American Journal of Applied Sciences, 10 (9). pp. 1087-1092. ISSN 1546-9239; ESSN: 1554-3641

Kueh, Roland Jui Heng and Nik Ab. Majid, Nik Muhamad and Gandaseca, Seca and Ahmed, Osumanu Haruna and Jemat, Silvester and Ku, Melvin Kin Kin (2013) Assessment of floristic composition in a rehabilitated forest, Sarawak, Malaysia. Borneo Journal of Resource Science and Technology, 2 (2). pp. 60-66. ISSN 2229-9769

Ch’ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jol, Hamdan (2013) Assessment of soil fertility in a tropical rehabilitated forest. In: Advances in Tropical Soil Science. Universiti Putra Malaysia Press, Serdang, Selangor, pp. 18-38. ISBN 9789673443482

Ch'ng, Huck Ywih and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad (2013) Co-composting of pineapple leaves and chicken manure slurry. International Journal of Recycling of Organic Waste in Agriculture, 2. art. no. 23. pp. 1-8. ISSN 2195-3228; ESSN: 2251-7715

Perumal, Palanivell and Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2013) Compost and crude humic substances produced from selected wastes and their effects on Zea mays l. nutrient uptake and growth. The Scientific World Journal, 2013. art. no. 276235. pp. 1-15. ISSN 2356-6140; ESSN: 1537-744X

Perumal, Palanivell and Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2013) Effects of crude humin and compost produced from selected waste on Zea mays growth, nutrient uptake and nutrient use efficiency. African Journal of Biotechnology, 12 (13). art. no. ADC199B26054. pp. 1500-1507. ISSN 1684–5315

Karam Singh, Daljit Singh and Abdu, Arifin and Othman, Radziah and Jusop, Shamsuddin and Abdul Hamid, Hazandy and Nik Ab. Majid, Nik Muhamad and I., Zahari and Abd. Halim, Nor Halizah and Cheng, Kah Yen (2013) Evaluation of soil biological properties of 9- and 15-year-old stands in the oil palm plantation in Perak, Malaysia. African Journal of Agricultural Research, 8 (29). art. no. 64FBDA334256. pp. 3904-3910. ISSN 1991-637X

Nik Jaafar, Nik Mohd Shibli and Nik Ab. Majid, Nik Muhamad and Mohamed Shazili, Noor Azhar and Abdu, Arifin (2013) Growth performance, biomass and phytoextraction efficiency of Acacia mangium and Melaleuca cajuputi in remediating heavy metal contaminated soil. American Journal of Environmental Sciences, 9 (4). pp. 310-316. ISSN 1553-345X; ESSN: 1558-3910

Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Taha, Azura (2013) Heavy metal uptake and translocation in Strobilanthes crispus for phytoremediation of sewage sludge contaminated soil. Journal of Food, Agriculture and Environment, 11 (2). pp. 1514-1521. ISSN 1459-0255; ESSN: 1459-0263

Heshmati, Mosayeb and Abdu, Arifin and Nik Ab. Majid, Nik Muhamad and Jusop, Shamsuddin (2013) Land degradation and preventive measures from the perspective of the stakeholders. American Journal of Applied Sciences, 10 (9). pp. 1061-1076. ISSN 1546-9239; ESSN: 1554-3641

Karam Singh, Daljit Singh and Abdu, Arifin and Othman, Radziah and Jusop, Shamshuddin and Abdul Hamid, Hazandy and Nik Ab. Majid, Nik Muhamad and Jamaluddin, Aiza Shaliha and Rui, T. X. and Keeren, S. R. (2013) Status of soil microbial population, enzymatic activity and biomass of selected natural, secondary and rehabilitated forests. American Journal of Environmental Sciences, 9 (4). pp. 301-309. ISSN 1553-345X; ESSN: 1558-3910

Perumal, Palanivell and Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2012) Effect of humin-urea-rock phosphate amendment on Bekenu series (Tipik Tualemkuts) soil. African Journal of Biotechnology, 11 (45). art. no. 908817931240. pp. 10317-10321. ISSN 1684–5315

Ahmed, Osumanu Haruna and Shamsuddin, Rosliza and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2012) Effect of N, P and K humates on dry matter of Zea mays and soil pH, exchangeable ammonium and available nitrate. African Journal of Biotechnology, 11 (40). art. no. 76C1C1039752. pp. 9566-9571. ISSN 1684–5315

Abdu, Arifin and Ahmadpour, Parisa and Abdul Hamid, Hazandy and Tengku Muda Mohamed, Mahmud and Junejo, Nasima and Ahmadpour, Fatemeh and Soleimani, Mohsen and Wasli, Mohd Effendi and Nik Ab. Majid, Nik Muhamad (2012) Evaluation of cadmium bioaccumulation and translocation by Hopea odorata grown in a contaminated soil. African Journal of Biotechnology, 11 (29). art. no. 5232FA533297. pp. 7472-7482. ISSN 1684–5315

Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Abdul Rauf, Redzuan and Ahmadpour, Parisa and Abdu, Arifin (2012) Assessment of heavy metal uptake and translocation in Dyera costulata for phytoremediation of cadmium contaminated soil. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, 62 (3). pp. 245-250. ISSN 0906-4710; ESSN: 1651-1913

Heshmati, Mosayeb and Abdu, Arifin and Jusop, Shamsuddin and Nik Ab. Majid, Nik Muhamad (2012) Predicting N,P,K and organic carbon depletion in soils using MPSIAC model at the Merek catchment, Iran. Geoderma, 175 (1). pp. 64-77. ISSN 0016-7061; ESSN:1872-6259

Perumal, Palanivell and Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2012) Effects of extraction period on yield of rice straw compost humic acids. African Journal of Biotechnology, 11 (20). art. no. B6C0DF034011. pp. 4530-4536. ISSN 1684–5315

Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Riasmi, Yumarnis and Abdu, Arifin (2012) Assessment of heavy metal uptake and translocation by Pluchea indica L. from sawdust sludge contaminated soil. Journal of Food, Agriculture and Environment, 10 (2). pp. 849-855. ISSN 1459-0255; ESSN: 1459-0263

Kueh, Roland Jui Heng and Nik Ab. Majid, Nik Muhamad and Gandaseca, Seca and Ahmed, Osumanu Haruna and Ku, Melvin Kin Kin (2012) Assessment of micrometeorology at selected age stands in a rehabilitated forest of Sarawak, Malaysia. Journal of Tropical Biology and Conservation, 9 (1). pp. 83-95. ISSN 1823-3902

Jamaluddin, Aiza Shaliha and Abdu, Arifin and Abdul Hamid, Hazandy and Senin, Abdul Latib and Nik Ab. Majid, Nik Muhamad and Jusop, Shamshuddin (2012) Emphasizing the properties of soils occurring in different land use types of tropical rainforest in Sarawak, Malaysia. African Journal of Agricultural Research, 7 (48). art. no. 5FFF6F438974. pp. 6479-6487. ISSN 1991-637X

Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Nap, Melina E. and Ghafoori, Maryam and Abdu, Arifin (2012) Heavy metal uptake and translocation by Justicia gendarussa Burm F. from textile sludge contaminated soil. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, 62 (2). pp. 101-108. ISSN 0906-4710; ESSN: 1651-1913

Karam Singh, Daljit Singh and Abdu, Arifin and Othman, Radziah and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad and Abdul Hamid, Hazandy and Ibrahim, Zahari and Abd. Halim, Nor Halizah and Rui, T. X. (2012) Impact of long-term forest enrichment planting on the biological status of soil in a deforested Dipterocarp Forest in Perak, Malaysia. The Scientific World Journal, - (641346). pp. 1-8. ISSN 1537-744X

Chen, Guan Pau and Chan, Stephen Teck Leong and Wong, Sing King and Eng, Lily and Jiwan, Make and Ragai Kundat, Franklin and Ab. Aziz, Zakry Fitri and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2012) Isolation of indigenous strains of Paecilomyces lilacinus with antagonistic activity Meloidogyne incognita. International Journal of Agriculture and Biology, 14 (2). pp. 197-203. ISSN 1560-8530; ESSN: 1814–9596

Awing, Norida Hanim and Nik Ab. Majid, Nik Muhamad and Ahmed, Osumanu Haruna and Kasim, Susilawati and Ahmad, Khairulmazmi (2012) Physico-chemical properties of indigenous micro organism-composts and humic acid prepared from selected agro-industrial residues. African Journal of Biotechnology, 11 (34). art. no. 7CA621D37651. pp. 8456-8463. ISSN 1684–5315

Abdu, Arifin and Karam Singh, Daljit Singh and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad and Othman, Radziah and Abdul Hamid, Hazandy and I., Zahari (2012) Proposing a suitable soil quality index for natural, secondary and rehabilitated tropical forests in Malaysia. African Journal of Biotechnology, 11 (14). art. no. B50339E35416. pp. 3297-3309. ISSN 1684–5315

Heshmati, Mosayeb and Abdu, Arifin and Jusop, Shamsuddin and Nik Ab. Majid, Nik Muhamad and Ghaituri, M. (2011) Factors affecting landslides occurrence in agro-ecological zones in the Merek catchment, Iran. Journal of Arid Environments, 75 (11). pp. 1072-1082. ISSN 0140-1963

Ch’ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Assessment of soil carbon storage in a tropical rehabilitated forest. International Journal of the Physical Sciences, 6 (26). pp. 6210-6219. ISSN 1992-1950

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Effect of mixing urea with zeolite and sago waste water on nutrient use efficiency of maize (Zea mays L.). African Journal of Microbiology Research, 5 (21). art. no. BB73FC413149. pp. 3462-3467. ISSN 1996-0808

Mohd Yusuff, Mohd Taufik and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Ammonia loss reduction, exchangeable ammonium and available nitrate retention in soil treated with urea mixed with humic acid and acid sulphate soil. International Journal of the Physical Sciences, 6 (21). pp. 4897-4902. ISSN 1992-1950

Mohd Yusuff, Mohd Taufik and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Effect of amending urea with humic acids and acid sulphate on biomass production of Masmadu (Zea mays L.) and selected soil chemical properties. International Journal of the Physical Sciences, 6 (20). pp. 4690-4694. ISSN 1992-1950

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Enhancing nutrient use efficiency of maize (Zea mays L.) from mixing urea with zeolite and peat soil water. International Journal of the Physical Sciences, 6 (14). pp. 3330-3335. ISSN 1992-1950

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Ammonia loss, soil exchangeable ammonium and available nitrate contents from mixing urea with zeolite and peat soil water under non-waterlogged condition. International Journal of the Physical Sciences, 6 (12). pp. 2916-2920. ISSN 1992-1950

Yetti Heryati, and Abdu, Arifin and Mahat, Mohd Noor and Abdul Hamid, Hazandy and Jusop, Shamsuddin and Nik Ab. Majid, Nik Muhamad and Ika Heriansyah, and Ahmad, Khairulmazmi (2011) Assessing forest plantation productivity of exotic and indigenous species on degraded secondary forests. American Journal of Agricultural and Biological Sciences, 6 (2). pp. 201-208. ISSN 1557-4989; ESSN: 1557-4997

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Ammonia loss, ammonium and nitrate accumulation from mixing urea with zeolite and peat soil water under waterlogged condition. African Journal of Biotechnology, 10 (17). art. no. 894B6A930518. pp. 3365-3369. ISSN 1684–5315

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Reducing ammonia loss from urea and improving soil exchangeable ammonium and available nitrate in non waterlogged soils through mixing zeolite and sago (Metroxylon sagu) waste water. International Journal of the Physical Sciences, 6 (4). pp. 866-870. ISSN 1992-1950

Bundan, Latip and Nik Ab. Majid, Nik Muhamad and Ahmed, Osumanu Haruna and Jiwan, Make and Ragai Kundat, Franklin (2011) Ammonia volatilization from urea at different levels of zeolite. International Journal of the Physical Sciences, 6 (34). pp. 7717-7720. ISSN 1992-1950

Karam Singh, Daljit Singh and Abdu, Arifin and Othman, Radziah and Jusop, Shamsuddin and Abdul Hamid, Hazandy and Nik Ab. Majid, Nik Muhamad and Panicker, Mohanaselvi and Abd. Halim, Nor Halizah (2011) Assessing soil biological properties of natural and planted forests in the Malaysian tropical lowland dipterocarp forest. American Journal of Applied Sciences, 8 (9). pp. 854-859. ISSN 1546-9239; ESSN: 1554-3641

Justin, Veronica and Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Abdu, Arifin (2011) Assessment of heavy metal uptake and translocation in Acacia mangium for phytoremediation of cadmium-contaminated soil. Journal of Food, Agriculture and Environment, 9 (2). pp. 588-592. ISSN 1459-0255; ESSN: 1459-0263

Yetti Heryati, and Abdu, Arifin and Mahat, Mohd Noor and Abdul Hamid, Hazandy and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad and Heriansyah, Ika and Ajang, Leslie and Ahmad, Khairulmazmi (2011) Comparing the fertility of soils under Khaya ivorensis plantation and regenerated degraded secondary forests. American Journal of Applied Sciences, 8 (5). pp. 472-480. ISSN 1546-9239; ESSN: 1554-3641

Ku, Melvin Kin Kin and Bujang, Japar Sidik and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Kueh, Roland Jui Heng and Jemat, Silvester (2011) Comparison of carbon and selected macronutrients in forest-floor litter of rehabilitated and secondary forests. American Journal of Applied Sciences, 8 (10). pp. 967-972. ISSN 1546-9239; ESSN: 1554-3641

Mat Nuri, Ahmad Shukri and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Effect of tropical peat swamp forest clearing on soil carbon storage. American Journal of Agricultural and Biological Sciences, 6 (1). pp. 80-83. ISSN 1557-4989; ESSN: 1557-4997

Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Effectiveness of liquid organic-nitrogen fertilizer in enhancing nutrients uptake and use efficiency in corn (Zea mays). African Journal of Biotechnology, 10 (12). art. no. 8BCF3D032015. pp. 2274-2281. ISSN 1684–5315

Heshmati, Mosayeb and Abdu, Arifin and Jusop, Shamsuddin and Nik Ab. Majid, Nik Muhamad (2011) Effects of land use practices on the organic carbon content, cation exchange capacity and aggregate stability of soils in the catchment zones. American Journal of Applied Sciences, 8 (12). pp. 1363-1373. ISSN 1546-9239; ESSN: 1554-3641

Nik Ab. Majid, Nik Muhamad and Islam, Md. Monirul and Justin, Veronica and Abdu, Arifin and Ahmadpour, Parisa (2011) Evaluation of heavy metal uptake and translocation by Acacia mangium as a phytoremediator of copper contaminated soil. African Journal of Biotechnology, 10 (42). art. no. C57BCE927927. pp. 8373-8379. ISSN 1684–5315

Kueh, Roland Jui Heng and Nik Ab. Majid, Nik Muhamad and Gandaseca, Seca and Ahmed, Osumanu Haruna and Jemat, Silvester and Ku, Melvin Kin Kin (2011) Forest structure assessment of a rehabilitated forest. American Journal of Agricultural and Biological Sciences, 6 (2). pp. 256-260. ISSN 1557-4989; ESSN: 1557-4997

Kenzo, Tanaka and Yoneda, Reiji and Matsumoto, Yoosuke and Alias, Mohamad Azani and Nik Ab. Majid, Nik Muhamad (2011) Growth and photosynthetic response of four Malaysian indigenous tree species under different light conditions. Journal of Tropical Forest Science, 23 (3). pp. 271-281. ISSN 0128-1283

Yetti Heryati, and Belawan, Debora and Abdu, Arifin and Mahat, Mohd Noor and Abdul Hamid, Hazandy and Nik Ab. Majid, Nik Muhamad and Hassan, Affendy and Ika Heriansyah, (2011) Growth performance and biomass accumulation of a Khaya ivorensis plantation in three soil series of ultisols. American Journal of Agricultural and Biological Sciences, 6 (1). pp. 33-44. ISSN 1557-4989; ESSN: 1557-4997

Islam, Md. Monirul and Nik Ab. Majid, Nik Muhamad and Sirajul Karim, A. J. M. and Jahiruddin, M. and Islam, M. S. and Hakim, M. A. (2011) Integrated nutrient management for tomato-okra-stem amaranth cropping pattern in homestead area. Journal of Food, Agriculture and Environment, 9 (2). pp. 438-445. ISSN 1459-0255; ESSN: 1459-0263

Huck, Ywih Ch'ng and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Qualitative assessment of soil carbon in a rehabilitated forest using Fourier transform infrared spectroscopy. The Scientific World Journal, 11 (1). pp. 532-545. ISSN 1537-744X

Abdu, Arifin and Aderis, Najihah and Abdul Hamid, Hazandy and Nik Ab. Majid, Nik Muhamad and Jusop, Shamsuddin and Karam Singh, Daljit Singh and Ahmad, Khairulmazmi (2011) Using Orthosiphon stamineus B. for phytoremediation of heavy metals in soils amended with sewage sludge. American Journal of Applied Sciences, 8 (4). pp. 323-331. ISSN 1546-9239; ESSN: 1554-3641

Bernard, Regis and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2011) Utilization of activated carbon produced from Sago hampas (Metroxylon sagu) to reduce ammonia loss from urea. International Journal of the Physical Sciences, 6 (25). pp. 6140-6146. ISSN 1992-1950

Ahmed, Osumanu Haruna and Yap, Braine C. H. and Nik Ab. Majid, Nik Muhamad (2010) Minimizing ammonia loss from urea through mixing with zeolite and acid sulphate soil. International Journal of the Physical Sciences, 5 (14). pp. 2198-2202. ISSN 1992-1950

Salimin, Muhamad Ismawi and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2010) Comparison of selected chemical properties of peat swamp soil before and after timber harvesting. American Journal of Environmental Sciences, 6 (2). pp. 164-167. ISSN 1553-345X; ESSN: 1558-3910

Ahmed, Osumanu Haruna and Hasbullah, Nur Aainaa and Nik Ab. Majid, Nik Muhamad (2010) Accumulation of soil carbon and phosphorus contents of a rehabilitated forest. The Scientific World Journal, 10. pp. 1988-1995. ISSN 1537-744X

Rambok, Empi and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2010) Comparison of selected soil chemical properties of two different mangrove forests in Sarawak. American Journal of Environmental Sciences, 6 (5). pp. 438-441. ISSN 1553-345X; ESSN: 1558-3910

Basri, Mohd Hadi Akbar and Ahmed, Osumanu Haruna and Jamaluddin, Aiza Shaliha and Nik Ab. Majid, Nik Muhamad and Abdul Hamid, Hazandy and Jusop, Shamsuddin and Hassan, Affendy and Yusof, K. H. and Abdu, Arifin (2010) Differences in soil physical and chemical properties of rehabilitated and secondary forests. American Journal of Applied Sciences, 7 (9). pp. 1200-1209. ISSN 1546-9239; ESSN: 1554-3641

Firdaus, Mohd Suffian and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2010) Effect of converting secondary tropical peat swamp forest into oil palm plantation on selected peat soil physical properties. American Journal of Environmental Sciences, 6 (4). pp. 402-405. ISSN 1553-345X; ESSN: 1558-3910

Lee, Jia Huey and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2010) Effects of extractants on the yields and selected chemical characteristics of humic acids isolated from tropical saprists peat. American Journal of Applied Sciences, 7 (7). pp. 933-936. ISSN 1546-9239; ESSN: 1554-3641

Omar, Latifah and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2010) Minimizing ammonia volatilization in waterlogged soils through mixing of urea with zeolite and sago waste water. International Journal of the Physical Sciences, 5 (14). pp. 2193-2197. ISSN 1992-1950

Saga, B. T. and Ahmed, Osumanu Haruna and Jamaluddin, Aiza Shaliha and Abdul Hamid, Hazandy and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad and Hassan, Affendy and Yusof, K. H. and Abdu, Arifin (2010) Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests. American Journal of Environmental Sciences, 6 (4). pp. 389-394. ISSN 1553-345X; ESSN: 1558-3910

Kamaruddin, Shafinah and Selamat, Mohd Hasan and Abdullah, Rusli and Nik Ab. Majid, Nik Muhamad and Abd. Ghani, Awang Noor (2010) System evaluation for a decision support system. Information Technology Journal, 9 (5). pp. 889-898. ISSN 1812-5638; ESSN: 1812-5646

Ahmadpour, Parisa and Mat Nawi, Azmi and Abdu, Arifin and Abdul Hamid, Hazandy and Karam Singh, Daljit Singh and Hassan, Affendy and Nik Ab. Majid, Nik Muhamad and Jusop, Shamshuddin (2010) Uptake of heavy metals by Jatropha curcas L. planted in soils containing sewage sludge. American Journal of Applied Sciences, 7 (10). pp. 1291-1299. ISSN 1546-9239; ESSN: 1554-3641

Ahmed, Osumanu Haruna and G., Sumalatha and Nik Ab. Majid, Nik Muhamad (2010) Use of zeolite in maize (Zea mays) cultivation on nitrogen, potassium, and phosphorus uptake and use efficiency. International Journal of the Physical Sciences, 5 (15). pp. 2393-2401. ISSN 1992-1950

Satrio, Anton Eko and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of logging operation on soil carbon storage of a tropical peat swamp forest. American Journal of Environmental Sciences, 5 (6). pp. 748-752. ISSN 1553-345X; ESSN: 1558-3910

Ahmed Osumanu Haruna (2009) A fertiliser composition. UNSPECIFIED.

Osumanu Haruna Ahmed (2009) Method of isolating humic acid. UNSPECIFIED.

Hamzah, Mohd Zaki and Abdu, Arifin and Abdul Kadir, Md Zaidey and Ahmad, Nor Azirim and Ibrahim, Zahari and Abdul Hamid, Hazandy and Hassan, Affendy and Wasli, Mohd Effendi and Jusop, Shamsuddin and Nik Ab. Majid, Nik Muhamad (2009) Characterizing soil nutrient status and growth performance of planted dipterocap and non-dipterocarp species on degraded forest land in Peninsular Malaysia. Journal of Applied Sciences, 9 (24). 4215 -4223. ISSN 1812-5654

Petrus Rudut, Auldry Chaddy and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Hassan, Mohammad Nasir and Jiwan, Make and Banta, Michael Gregory (2009) Chemical characteristics of compost and humic acid from sago waste (Metroxylon sagu). American Journal of Applied Sciences, 6 (11). pp. 1880-1884. ISSN 1546-9239; ESSN: 1554-3641

Shamsuddin, Rosliza and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Controlling ammonia volatilization by mixing urea with humic acid, fulvic acid, triple superphosphate and muriate of potash. American Journal of Environmental Sciences, 5 (5). pp. 605-609. ISSN 1553-345X; ESSN: 1558-3910

Ah Tung, Petronella Gerald and Yusoff, Mohd Kamil and Nik Ab. Majid, Nik Muhamad and Goh, Kah Joo and Gan, Huang Huang (2009) Effect of N and K fertilizers on nutrient leaching and groundwater quality under mature oil palm in Sabah during the monsoon period. American Journal of Applied Sciences, 6 (10). pp. 1788-1799. ISSN 1546-9239; ESSN: 1554-3641

Murugayah, Rajeswari and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of different ages of a rehabilitated forest on selected physico-chemical properties. American Journal of Applied Sciences, 6 (6). pp. 1043-1046. ISSN 1546-9239; ESSN: 1554-3641

Mohd Yusuff, Mohd Taufik and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of enhancing urea-humic acid mixture with refined acid sulphate soil. American Journal of Applied Sciences, 6 (11). pp. 1892-1896. ISSN 1546-9239; ESSN: 1554-3641

Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Effect of grain size on selected physico-chemical properties of clay. American Journal of Environmental Sciences, 5 (5). pp. 610-612. ISSN 1553-345X; ESSN: 1558-3910

Mohd Yusuff, Mohd Taufik and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of mixing urea with humic acid and acid sulphate soil on ammonia loss, exchangeable ammonium and available nitrate. American Journal of Environmental Sciences, 5 (5). pp. 588-591. ISSN 1553-345X; ESSN: 1558-3910

Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Yusop, Mohd Khanif and Jalloh, Mohamadu Boyie (2009) Effect of organic based N fertilizer on dry matter (Zea mays L.), ammonium and nitrate recovery in an acid soil of Sarawak, Malaysia. American Journal of Applied Sciences, 6 (7). pp. 1289-1294. ISSN 1546-9239; ESSN: 1554-3641

Satrio, Anton Eko and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of precipitation fluctuation on soil carbon storage of a tropical peat swamp forest. American Journal of Applied Sciences, 6 (8). pp. 1484-1488. ISSN 1546-9239; ESSN: 1554-3641

Satrio, Anton Eko and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Effect of skidding operations on soil carbon storage of a tropical peat swamp forest. American Journal of Environmental Sciences, 5 (6). pp. 722-726. ISSN 1553-345X; ESSN: 1558-3910

Ch'ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Effects of converting secondary forest on tropical peat soil to oil palm plantation on carbon storage. American Journal of Agricultural and Biological Sciences, 4 (2). pp. 123-130. ISSN 1557-4989; ESSN: 1557-4997

Ch'ng, Huck Ywih and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Effects of converting secondary forest on tropical peat soil to oil plantation on carbon storage. American Journal of Agricultural and Biological Sciences, 4 (2). pp. 123-130. ISSN 1557-4989; ESSN: 1557-4997

Muniandy, Makilan and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Yusop, Mohd Khanif (2009) Effects of converting secondary forest to oil palm plantation on peat soil carbon and nitrogen and other soil chemical properties. American Journal of Environmental Sciences, 5 (3). pp. 406-412. ISSN 1553-345X; ESSN: 1558-3910

Ahmed, Osumanu Haruna and Hussin, Aminuddin and Mohd Hanif, Ahmad Husni and Jalloh, Mohamadu Boyie and Abd Rahim, Anuar and Nik Ab. Majid, Nik Muhamad (2009) Enhancing the urea-N use efficiency in maize (Zea mays) cultivation on acid soils using urea amended with zeolite and TSP. American Journal of Applied Sciences, 6 (5). pp. 829-833. ISSN 1546-9239; ESSN: 1554-3641

Chubo, John Keen and Ong, Kian Huat and Md. Jais, Hasnah and Mardatin, Noor Faiqoh and Nik Ab. Majid, Nik Muhamad (2009) Genera of arbuscular mycorrhiza occurring within the rhizospheres of Octomeles sumatrana and Anthocephalus chinensis in Niah, Sarawak, Malaysia. Research Article, 35. pp. 340-345.

Chubo, John Keen and Ong, Kian Huata and Md. Jais, Hasnah and Mardatin, Noor Faiqoh and Nik Ab. Majid, Nik Muhamad (2009) Genera of arbuscular mycorrhiza occurring within the rhizospheres of Octomeles sumatrana and Anthocephalus chinensis in Niah, Sarawak, Malaysia. ScienceAsia, 35 ( ). pp. 340-345. ISSN 1513-1874

Satrio, Anton Eko and Gandaseca, Seca and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Influence of chemical properties on soil carbon storage of a tropical peat swamp forest. American Journal of Applied Sciences, 6 (11). pp. 1969-1972. ISSN 1546-9239; ESSN: 1554-3641

Lee, Yit Leng and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Organic matter, carbon and humic acids in rehabilitated and secondary forest soils. American Journal of Applied Sciences, 6 (5). pp. 824-828. ISSN 1546-9239; ESSN: 1554-3641

Petrus Rudut, Auldry Chaddy and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Hassan, Mohammad Nasir and Jiwan, Make (2009) Production of potassium and calcium hydroxide, compost and humic acid from sago (Metroxylon sagu) waste. American Journal of Environmental Sciences, 5 (5). pp. 664-668. ISSN 1553-345X; ESSN: 1558-3910

Abdul Reeza, Ameera and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Reducing ammonia loss from urea by mixing with humic and fulvic acids isolated from coal. American Journal of Environmental Sciences, 5 (3). pp. 420-426. ISSN 1553-345X; ESSN: 1558-3910

Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Yusop, Mohd Khanif and Jalloh, Mohamadu Boyie (2009) Reduction of ammonia loss by mixing urea with liquid humic and fulvic acids isolated from tropical peat soil. American Journal of Agricultural and Biological Sciences, 4 (1). pp. 18-23. ISSN 1557-4989; ESSN: 1557-4997

Bernard, Regis and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Reduction of ammonia loss from urea through mixing with humic acids isolated from peat soil (saprists). American Journal of Environmental Sciences, 5 (3). pp. 393-397. ISSN 1553-345X; ESSN: 1558-3910

Shamsuddin, Rosliza and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Reduction of ammonia volatilization through mixing urea with humic and fulvic acids isolated from palm oil mill effluent sludge. American Journal of Environmental Sciences, 5 (3). pp. 382-386. ISSN 1553-345X; ESSN: 1558-3910

Chen, Claudia Hui Hui and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Reduction of isolation period of coal humic acids. American Journal of Applied Sciences, 6 (7). pp. 1327-1330. ISSN 1546-9239; ESSN: 1554-3641

Shamsuddin, Rosliza and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2009) Simple and rapid method of isolating humic acids from tropical peat soils (Saprists). American Journal of Applied Sciences, 6 (5). pp. 820-823. ISSN 1546-9239; ESSN: 1554-3641

Gandaseca, Seca and Sabang, John and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad (2009) Vegetation assessment of peat swamp forest using remote sensing. American Journal of Agricultural and Biological Sciences, 4 (2). pp. 167-172. ISSN 1557-4989; ESSN: 1557-4997

Kenzo, Tanaka and Yoneda, Reiji and Alias, Mohamad Azani and Nik Ab. Majid, Nik Muhamad (2008) Changes in leaf water use after removal of leaf lower surface hairs on Mallotus macrostachyus (Euphorbiaceae) in a tropical secondary forest in Malaysia. Journal of Forest Research, 13 (2). pp. 137-142. ISSN 1610-7403

Mohd Ramzan, Nor Hanisah and Ahmed, Osumanu Haruna and Kasim, Susilawati and Nik Ab. Majid, Nik Muhamad and Jalloh, Mohamadu Boyie (2008) Determination of minimal duration essential for isolation of humic acids from soils in forest restoration programmes. American Journal of Agricultural and Biological Sciences, 3 (3). pp. 597-601. ISSN 1557-4989; ESSN: 1557-4997

Ahmed, Osumanu Haruna and Hussin, Aminuddin and Mohd Hanif, Ahmad Husni and Abdul Rahim, Anuar and Nik Ab. Majid, Nik Muhamad (2008) Enhancing the urea-N use efficiency in maize (Zea mays) cultivation on acid soils amended with zeolite and TSP. The Scientific World Journal, 8. pp. 394-399. ISSN 1537-744X

Omar, Shairul Rizdiyandi and Ahmed, Osumanu Haruna and Saamin, Shaharudin and Nik Ab. Majid, Nik Muhamad (2008) Gamma radiosensitivity study on chili (Capsicum annuum). American Journal of Applied Sciences, 5 (2). pp. 67-70. ISSN 1546-9239; ESSN: 1554-3641

Kenzo, Tanaka and Yoneda, Reiji and Matsumoto, Yoosuke and Alias, Mohamad Azani and Nik Ab. Majid, Nik Muhamad (2008) Leaf photosynthetic and growth responses on four tropical tree species to different light conditions in degraded tropical secondary forest, Peninsular Malaysia. Japanese Agricultural Research Quarterly, 42 (4). pp. 299-306. ISSN 0021-3551

Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Yusop, Mohd Khanif (2008) Simple method of purifying humic acids isolated from tropical hemists (peat soil). American Journal of Applied Sciences, 5 (12). pp. 1812-1815. ISSN 1546-9239; ESSN: 1554-3641

Mohd Yusuff, Mohd Taufik and Ahmed, Osumanu Haruna and Wan Yahaya, Wan Asrina and Nik Ab. Majid, Nik Muhamad (2007) Effect of organic and inorganic fertilizers on nitrogen and potassium uptake and yield of sweet corn grown on an acid soil. American Journal of Agricultural and Biological Sciences, 2 (2). pp. 118-122. ISSN 1557-4989; ESSN: 1557-4997

Kasim, Susilawati and Ahmed, Osumanu Haruna and Nik Ab. Majid, Nik Muhamad and Yusop, Mohd Khanif (2007) Effects of extraction and fractionation period on the yield of a tropical peat soil (Hemists) humic acids. American Journal of Agricultural and Biological Sciences, 2 (3). pp. 202-205. ISSN 1557-4989; ESSN: 1557-4997

Mohd Yusob, Shajarutulwardah and Ahmed, Osumanu Haruna and Wan Yahaya, Wan Asrina and Nik Ab. Majid, Nik Muhamad (2007) Evaluation of nitrogen and potassium uptake and efficiency of two rice varieties cultivated on an acid soil. American Journal of Agricultural and Biological Sciences, 2 (3). pp. 130-135. ISSN 1557-4989; ESSN: 1557-4997

Kon, Ellyfa and Ahmed, Osumanu Haruna and Saamin, Shaharudin and Nik Ab. Majid, Nik Muhamad (2007) Gamma radiosensitivity study on long bean (Vigna sesquipedalis). American Journal of Applied Sciences, 4 (12). pp. 1090-1093. ISSN 1546-9239; ESSN: 1554-3641

Hamzah, Mohd Zaki and Ibrahim, Faridah Hanum and Alias, Mohamad Azani and Nik Ab. Majid, Nik Muhamad and Yusoff, Mohd Kamil and Fujiwara, Kazue (2004) Recovery of lowland dipterocarp forests under the Malayan uniform system. Tropics, 14 (1). pp. 103-109. ISSN 0917-415X; ESSN: 1882-5729

Nik Ab. Majid, Nik Muhamad and Ibrahim, Faridah Hanum and Manan, Mohd Mokhtaruddin and Yusoff, Mohd Kamil and Alias, Mohamad Azani and Hamzah, Mohd Zaki (1999) Rehabilitation of degraded forest land. Research Report. The Research Unit, Universiti Putra Malaysia, Serdang, Selangor.

Nik Ab. Majid, Nik Muhamad and Alias, Mohamad Azani and Paudyal, Bimal Keshari (1998) Foliar sampling guidelines for different aged Acacia mangium plantations in Peninsular Malaysia. Journal of Tropical Forest Science, 10 (4). pp. 431-437. ISSN 0128-1283

Nik Ab. Majid, Nik Muhamad and Paudyal, Bimal Keshari and Shebli, Zarina (1998) Survival and early growth of acacia mangium, ceiba pentandra and casuarina equisetifolia on sandy tin tailings. Pertanika Journal of Tropical Agricultural Science, 21 (1). pp. 59-65. ISSN 1511-3701

Garrity, Dennis Philip and Soekardi, M. and Van Noordwijk, Meine and De La Cruz, R. and Pathak, P. S. and Gunasena, H. P. M. and Van So, N. and Huijun, G. and Nik Ab. Majid, Nik Muhamad (1996) The Imperata grasslands of tropical Asia: area, distribution, and typology. Agroforestry Systems, 36 (1-3). pp. 3-29. ISSN 0167-4366; ESSN: 1572-9680

Abu Bakar, Rosenani and Hashim, Azizah and Nik Ab. Majid, Nik Muhamad and Ab Shukor, Nor Aini and Ibrahim, Faridah Hanum (1993) Rehabilitation of underutilized sandy soils by agroforestry and organic amendments. In: International Farm Forestry Training Course, 14-28 Sept. 1993, Beijing, China. .

Jusoff, Kamaruzaman and Nik Ab. Majid, Nik Muhamad (1988) Effects of site preparation methods on soil physical characteristics. In: 5th International Soil Conservation Conference, 18-29 Jan. 1988, Bangkok, Thailand. .

Nik Ab. Majid, Nik Muhamad and Awang, Kamis and Jusoff, Kamaruzaman (1987) Impacts of sheep grazing on soil properties and growth of rubber (Hevea brasiliensis). In: ICRAF/WMO/UNEP Workshop on the Application of Meteorology to Agroforestry Systems Planning and Management, 9-13 February 1987, Nairobi, Kenya. .

Jusoff, Kamaruzaman and Nik Ab. Majid, Nik Muhamad (1987) Effects of crawler tractor logging on soil compaction in central Pahang. In: UNESCO/IUP Workshop on Impact of Operations in Natural and Plantation Forests on Conservation of Soil and Water Resources, 23 June -1 July 1987, Universiti Pertanian Malaysia, Serdang, Selangor. .

Jusoff, Kamaruzaman and Nik Ab. Majid, Nik Muhamad (1987) Impacts of deforestation for agriculture on soil physical characteristics in the steeplands. In: International Conference on Steepland Agriculture in the Humid Tropics, 17-20 Aug. 1987, Kuala Lumpur. .

Jusoff, Kamaruzaman and Nik Ab. Majid, Nik Muhamad and Ahmad, Desa (1986) Effects of logging roads on erosion and sedimentation. In: Asean-US Watershed Workshop on Roading and Development Activities in Relation to Soil Erosion and Sedimentation Control in Watersheds, 20-26 July 1986, Jakarta, Indonesia. .

Nik Ab. Majid, Nik Muhamad and Jusoff, Kamaruzaman (1986) Transfer of watershed technology for sustained yield forestry in Malaysia. In: ASEAN-US Watershed Workshop on Standardization and Technology Transfer of Watershed Research and Management Techniques, Practices and Technologies, 26 October - 1 November 1986, Chiangmai, Thailand. .

Jusoff, Kamaruzaman and Nik Ab. Majid, Nik Muhamad (1986) The impact of skid trails on the physical properties of tropical hill forest soils. Pertanika, 9 (3). pp. 311-321. ISSN 0126-6128

Lai, Food See and Nik Ab. Majid, Nik Muhamad (1985) Soil and water conservation research in Peninsular Malaysia. In: ASEAN-US Watershed Project Second Seminar, 27 Oct.-2 Nov. 1985, Universiti Pertanian Malaysia. .

Nik Ab. Majid, Nik Muhamad and Hamzah, Mohd Basri and Ahmad, Shaharuddin (1979) Rainfall interception, throughfall and stemflow in a secondary forest. Pertanika, 2 (2). pp. 152-154. ISSN 0126-6128

Nik Ab. Majid, Nik Muhamad and Yusoff, Mohd Kamil Integrated upland forested watershed management. Research Report. Research Management Centre, Serdang, Selangor.