To evaluate residual recoveries of fertilizer phosphorus (P) two field experiments were conducted in Quezon Province, Philippines during 1991 dry season, under irrigated condition. Average grain yield increase was 0.50-0.9 t/ha due to residual effects of inorganic fertilizer P, regardless of course. Residual effects of fertilizer P with Sesbania rostrata or alone increased grain yield by 0.3-1.0 t/ha over control. Significantly higher yields were obtained with S. rostrata fertilized with Morocco phosphate Rock (MPR) and S. rostrata + MPR applied on rice than the control. Results revealed that there is a promising effect of residual P from the applied P sources in increasing rice grain yield. Total P uptake increased due to residual P from fertilizer P applied. Results suggest that increased P uptake increased dry matter and grain yield.
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Nutrient cycling in agroecosystems
期
3
页码
189
- 193
ISSN
1385-1314
出版者
Blackwell Publishing Ltd
其它主题
Nutrient sources; Relative effectiveness; Grains; Flooded conditions; Dry matter accumulation; Triple superphosphate; Partially acidulated rock phosphate; Application rate; Chemical constituents of plants
语言
英语
注释
Includes references
2019-12-06
类型
Text; Journal Article
2024-02-28
MODS