Effect of different nitrogen management and Tillage options on soil, nutrient content, uptake and yield of wheat (Triticum aestivum L.) using under active crop canopy sensor

Abstract

A field experiment was conducted during Rabi at BAC, Research Farm Sabour to access the effect of precession nitrogen management and tillage practices on growth parameter of wheat. The experiment was carried two tillage practices (conventional tillage, CT and Zero tillage, ZT) in main-plots and six different nutrient management practices [viz.N1-Recommended dose of nutrients (150:60:40 kg NPK/ha, full P & K and ½ N at basal +1/2N in two splitting at 1st & 2nd irrigation- Top dressing after irrigation, N2-Recommended dose of nutrients (150:60:40kg NPK/ ha, full P & K and ½ N at basal +½ N in two splitting at 1st & 2nd irrigation-Top dressing before irrigation, N3-SSNM Based on Nutrient Expert (NE), N4-70% N of SSNM based on NE+ remaining N as guided by Green Seeker, N5 Nitrogen enriched plots (225:60:40Kg. NPK/ha.) and N6-SPAD based nutrient management, (75Kg. N as basal +25Kg. N as 1st top dress +25Kg. N at 42 SPAD reading) in sub plots with 3 replications. the conventional tillage recorded slightly higher grain yield than that of the zero tillage during both years of experimentation The maximum grain yield (45.5 and 49.4 q ha-1 in 1st year and 2nd year, respectively) was recorded from the plots received 70% N of SSNM based on nutrient expert system +remaining N guided by Green Seeker treatment and was significantly superior to the rest of the nutrient management practices.