Effect of nano nitrogen application on yield, nutrient uptake and profitability in fodder oat (Avena sativa L.) under north western Haryana condition

A field experiment was conducted to study the effect of nano nitrogen application on yield, nutrient content and farm profitability in fodder oat (Avena sativa L.). Oat variety (Kent) was grown at Research Farm of Agronomy Section, ICAR-National Dairy Research Institute, Karnal during Rabi season of 2020. The experiment was laid out in a randomized block design with six different treatment combinations comprising of different levels of urea and nano fertilizer as follows: T₁ = control (no nitrogen), T₂ = 100% RDN through urea, T₃ = 75% N through urea + 25% N through nano nitrogen, T₄ = 50% N through urea + 50% N through nano nitrogen, T₅ = 25% N through urea + 75% N through nano nitrogen, T₆ = 100% RDN through nano nitrogen. The results revealed that application of 100% RDN through urea (T₂) recorded highest green fodder yield (57.25 t/ha), total N, P and K uptake and net monetary returns viz., gross return, net return and B: C ratio by dry fodder of oats crop. Thus, study could not establish the superiority of nano nitrogen in getting higher yield, profitability and nutrient uptakes in fodder oat.