Response of lowland rice to depths of phosphorus fertiliser placement [Malaysia]
1983
Jakhro, A.A. (Institute of Agriculture, Sabah (Malaysia))
Results showed that when P was placed at 5cm depth, root length, root dry weight, plant height, number of tillers, grain yield and plant N, P and K concentrations were highest in varieties IR 42 and MR 7. With increasing depths of placement to 10 and 15 cm of P, root length, root dry weight, plant height, number of tillers, grain yield and plant N, P and K concentrations (%) decreased. Results of statistical analysis showed that variety effect and variety x depth interactions were nonsignificant. The effects of depths of P placement was significant. This indicated that proper P placement was a key factor in enhancing the root development and efficient utilisation of nutrients which caused the significant increase in the grain yield of lowland rice
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