Journal ID : AMA-19-12-2023-12790
[This article belongs to Volume - 54, Issue - 12]
Total View : 458

Title : Optimizing Rice Growth in NEH Region of India: Impact of Transplanting Time and Levels of Phosphorus

Abstract :

This study investigates the synergistic influence of transplanting time and varying levels of phosphorus on growth of rice crop. Planting dates of rice were carefully selected to represent key periods in cropping season in Ri-bhoi district of Meghalaya while the levels of phosphorus were carefully manipulated to assess the response of rice growth to these experimental treatments. Preliminary results indicated that rice crop transplanted on 3rd July produced significantly higher tiller number (14.18 hill-1), leaf area (1594.85 cm2) and accumulated dry matter (57 g hill-1) followed by 13th July transplanted crop. Rice crop transplanted on 2nd August produced least number of tillers (11.05 hill-1) resulting in reduced leaf area (1225.23 cm2) and lowest amount of accumulated dry matter (46.78 g hill-1). CGR was significantly affected by both transplanting dates and phosphorus levels. The highest CGR (6.21 g m-2 day-1) was observed in the crop transplanted on 3rd July. Net assimilation rate did not vary with change in transplanting dates of rice. However, phosphorus application significantly affected net assimilation rate. Maximum NAR was recorded from the crop receiving 90 kg P2O5 ha-1.

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