Effect of nano urea on nutrient uptake and economics of pearl millet

Abstract

A field experiment was conducted at College of Agriculture, Bheemarayanagudi during kharif, 2023 to study the effect of nano urea on growth and yield of pearl millet. The experiment was laid out in RCBD with eight treatments and replicated thrice. The treatments consist of different doses of RDF with different doses of nano urea sprayed at 30 and 45 DAS. The results revealed that application of 75% RDN as basal + nano urea spray @ 4.0 ml l-1 at 30 and 45 DAS recorded significantly higher uptake of nitrogen, phosphorus and potassium (12.7, 43.4 and 56.1 kg ha-1, respectively) and higher gross returns, net returns and BC ratio. It was found on par with recommended dose of fertilizers and 75% RDN as basal + nano urea spray @ 3.0 ml l-1 at 30 and 45 DAS. The absolute control was recorded with lower uptake of all the major nutrients and lower gross returns, net returns and BC ratio (₹ 91,373 ha-1, ₹ 55,316 ha-1 and 2.53, respectively).