Abstract— A field experimentation to determine the response of real time nitrogen management in rice using leaf colour chart on yield of rice under rainfed condition of western hills of Baitadi district of Nepal during rainy season of 2015. The variety for the field experimentation was carried in the variety “Rato Basmati”. This variety was tested at five LCC based nitrogen management practices (N omission + recommended dose of P and K, recommended dose 100:30:30 kg NPK ha-1, 30 kg N ha-1 + LCC < 4 @ 30 kg N ha-1, No basal + LCC<4 @30 kg N ha-1 and 30 kg N ha-1 15 DAT + LCC<4 @ 30 kg N ha-1) in simple RCBD with three replication. The soil of experimental site was sandy loam in texture with pH 5.93. The data showed that there was saving of 10 Kg N ha-1 as compared to recommended N practice (100 Kg N ha-1) in that LCC management practices where the basal application is omitted. Real time nitrogen management in rice using leaf colour chart significantly influenced the growth, yield attributes and yield over control. The highest plant height (122.90 cm), grain/panicle (103), grain yield (3890.83 kg/ha), harvest index (57.58) was obtained with no basal nitrogen plus LCC based nitrogen application. Maximum effective tiller (283.75) obtained from N2 application at 15 DAT+LCC based N application. The application of nitrogen only using the LCC or omitting the basal application further improve the efficiency of applied nitrogen and increase the yield by 75.53% and 25% respectively over the control and recommended practice.
Keywords— Real Time Nitrogen Management, Leaf Colour, Western Hills of Nepal, rice management.
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