Growth and yield attainment of Rabi rice (Oryza sativa L.) Under precision nitrogen management practice

Abstract

A field experiment was conducted during rabi, 2021-22 on sandy clay loam soils of Agricultural Research Station, Nellore, Andhra Pradesh to study the effect of precision nitrogen management on growth and yield of rabi rice. The experiment was laid out in Randomized Block Design with three replications. The experiment consisting of ten treatments viz., Control, FP, STBNF, RDN along with 2 LCC based, 2 NDVI based and 2 SPAD based N management with critical levels of LCC (4,5), NDVI (0.7, 0.8) and SPAD (35, 40) and that the variety used was NLR 3354. The experimental results indicated that the precision nitrogen management practices significantly influenced the growth and yield of rabi rice and found that the application of nitrogen through LCC-5, NDVI- 0.8 and SPAD-40 were on a par with the farmers practice and soil test based nitrogen fertilization in rabi rice.