Simple Search:

Assessment of the availability of phosphate to corn (Zea mays L) using 32P isotope dilution technique


Citation

Abdul Rahman, Zaharah and Abdul Hamid, Sharifuddin and Mardi, Ahmad Sahali (1997) Assessment of the availability of phosphate to corn (Zea mays L) using 32P isotope dilution technique. Malaysian Journal of Soil Science, 1. pp. 13-20. ISSN 1394-7990

Abstract / Synopsis

This study investigate the effectiveness of two phosphate rocks (PRs), an unreactive phosphate rock from China (CPR) and a reactive phosphate rock from North Carolina, USA (NCPR) compared to triple superphosphate (TPR), a highly water-soluble phosphate fertilizer. These fertilizers were tested using three crops of corn (Zea mays L) grown consecutively on a Serdang series soil (Typic Paleudult). 32P isotope dilution technique was used to access their P availability. The rate of P used was 100 kg P ha-1, applied once at the beginning of the experiment. NCPR was as efficient as TSP in providing P to the first crop, while CPR showed the lowest percentage of utilization. In the second crop, NCPR was the superior source of P. However, in the third crop all three sources showed very poor percentages of utilization. The total amount of P taken up by the three crops of corn was 13.65, 18.04 and 8.56 kg ha-1 from TSP, NCPR and CPR respectively. Thus this study suggests that NCPR is an effective source of P for corn and can be used as a substitute for the water-soluble phosphate fertilizers. CPR is not a suitable phosphate source.


Download File

[img]
Preview
PDF (Abstract)
Assessment of the availability of phosphate to corn (Zea mays L) using 32P isotope dilution technique.pdf

Download (37kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Publisher: Malaysian Society of Soil Science
Keywords: Phosphate rock; Isotope dilution; Specific activity; Relative availability
Depositing User: Nabilah Mustapa
Date Deposited: 30 Dec 2016 11:12
Last Modified: 30 Dec 2016 11:12
URI: http://psasir.upm.edu.my/id/eprint/49548
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item