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Influence of plant population and nitrogen-fertilizer at various levels on growth and growth efficiency of maize


Tajul, Mohammad Islam and Alam, M. M. and Hossain, S. M. M. and Naher, K. and Yusop, Mohd Rafii and Latif, Mohammad Abdul (2013) Influence of plant population and nitrogen-fertilizer at various levels on growth and growth efficiency of maize. The Scientific World Journal, 2013. art. no. 193018. pp. 1-9. ISSN 2356-6140; ESSN: 1537-744X


Field experiments were conducted to evaluate plant population and N-fertilizer effects on yield and yield components of maize (Zea mays L.). Three levels of plant populations (53000, 66000, and 800000 plants ha−1 corresponding to spacings of 75 × 25, 60 × 25, and 50 × 25 cm) and 4 doses of N (100, 140, 180, and 220 kg ha−1) were the treatment variables. Results revealed that plant growth, light interception (LI), yield attributes, and grain yield varied significantly due to the variations in population density and N-rates. Crop growth rate (CGR) was the highest with the population of 80,000 ha−1 receiving 220 kg N ha−1, while relative growth rate (RGR) showed an opposite trend of CGR. Light absorption was maximum when most of densely populated plant received the highest amount of N (220 kg N ha−1). Response of soil-plant-analysis development (SPAD) value as well as N-content to N-rates was found significant. Plant height was the maximum at the lowest plant density with the highest amount of N. Plants that received 180 kg N ha−1 with 80,000 plants ha−1 had larger foliage, greater SPAD value, and higher amount of grains cob−1 that contributed to the maximum yield (5.03 t ha−1) and the maximum harvest index (HI) compared to the plants in other treatments.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Institute of Tropical Agriculture
DOI Number: https://doi.org/10.1155/2013/193018
Publisher: Hindawi Publishing Corporation
Keywords: Crop growth rate; Nitrogen-fertilizer; Plant population
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 13 Jul 2016 04:53
Last Modified: 13 Jul 2016 04:53
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1155/2013/193018
URI: http://psasir.upm.edu.my/id/eprint/29302
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