Journal of Experimental Agriculture International

A field experiment was conducted during kharif season of 2023 and 2024 under Mahatma Phule Krishi Vidyapeeth, Rahuri (M.S.) at research farm of Oilseeds Research Station, Jalgaon (Maharashtra), India to study the effect of nitrogen foliar application through Nano urea and urea phosphate on groundnut.  The experiment was laid out under Randomized Block Design with three replications with ten treatments. The following treatments were implemented: three treatments consisting of 100, 75, 50 % RDF ( Recommended dose fertilizer ), three treatments consisting of 100, 75 and 50 % RDF  with combination of  0.2 and 1 %  nano urea and urea phosphate spray  at flowering stage, three treatments consisting of 100, 75 and 50 % RDF  with combination of 0.2 and 1% spray of nano urea and urea phosphate at flowering and peg formation stage, respectively and one treatment consisting of 100 % RDF + 2% urea spray at 30 and 60 DAS (Days after sowing), respectively. Furthermore, in accordance with the recommendation, 5 tons of FYM (farmyard manure) were applied uniformly to the groundnut plant var. JL-776 (Phule Bharati) for all treatments.

The results showed that, application of 100 % RDF + foliar spray of 0.2% nano urea + 1 % urea phosphate at flowering & peg formation stage (T₇) significantly increased kernel yield, pod yield,  haulm yield, biological yield, protein and oil per cent in seed as well as nutrients content and uptake of nitrogen, phosphorus, potassium, zinc, iron, copper and manganese in seed and haulm as compared to 100% RDF + foliar spray of urea @ 2% at 30 & 60 DAS  and  other conventional fertilizer treatments.