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Effect of nursery applications of N and P on rice (Oryza sativa) yield

Ros, C., Bell, R.W.ORCID: 0000-0002-7756-3755 and White, P.F. (1997) Effect of nursery applications of N and P on rice (Oryza sativa) yield. Kasetsart Journal: Natural Science, 31 . pp. 96-105.

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In two glasshouse experiments, one with N and the other with P, plants were treated with combinations of four and two levels of N or P in the nursery and after transplanting respectively. The relative responses of rice were determined from matter, nutrient uptake and grin yield. After 21 days in the nursery, rice seedlings produced 50% and 100 % more shoot dry matter when fertilized with N and P respectively than when unfertilized. In the nursery, root dry matter was also increased by N, but not by P. After transplanting, the effects of the nursery N and P persisted, leading to increases of up to 10 and 15% in grain yield, respectively. Nitrogen and phosphorus applied in the nursery shoot dry weight at 30 days after transplanting, both with and without added N or P at transplanting. The results suggested that fertilizing the nursery bed would have significant effects on grain yield and that for rice farming in Cambodia, appropriate strategies for the fertilizer management of the nursery as well as the mainfield are required in order to improve rice yield.

Item Type: Journal Article
Murdoch Affiliation: School of Environmental Science
Journal or Publication Title: Kasetsart Journal: Natural Science
Page Range: pp. 96-105
Publisher: Kasetsart University Research and Development Institute
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