Foliar nutrition of nitrogen and phosphorus in groundnut

Abstract

The field experiment were conducted during kharif season of 1988 and 1989 to find out the possibility benefits of foilar application of nitrogen and phosphorus in groundnut in comparison with their soil application. It was observed that foilar application of N and P fertilizer showed higher efficiency and produced more pod per unit of nutrient applied than their soil application . Among the different modes of application , applying 50% of these fertilizer doses as basal followed by two foiler spray of 1% equeous suspension of these fertilizer gave the yield at par with that obtained by soil application of full dose of these fertilizer. this was also found to be economical as the rate of fertilizer was lesser than soil application alone. On an average the soil application of 20 Kg N ha-1 as urea , 40 Kg P2 O5 ha-1 as SSP (Single super phosphate ) and 20 Kg N+ 40 Kg P2 O5 ha-1 produced 13.1 to 21.8 , 9. 0 to 16.5 and 20 .0 to 28.6% more than control, respectively . However , the application of 50% amount of these fertilizers in soil as basal followed by two foilar sprays of 1% aqueous suspension of these fertilizer at 30 and 70 days after sowing ( DAS ) showed 13.5 to 23.5 , 9.0 to 18.4 and 20.5 to 30.1% more pod yield over control , respectively.