Abstract
A 3-year field experiment conducted on direct and residual effects of N and P on groundnut (Arachis hypogaea L.) - wheat (Triticurri aestivunt L. emend. Fiori & Paol.) sequence showed that groundnut responded to direct application of N and P in initial season only. Neither nutrients applled to wheat nor directly applied to groundnut in subsequent seasons caused significant improvement in pod yield of groundnut. Groundnut needed 12.5 kg N and 21.5 kg P/ha in the first season only. There was no carry-over effect of N on the wheat crop. P @ 21.5 kglha benefitted the succeeding wheat crop in the second year only. Directly applied N up to 100 kg~ha and P up to lo.? kgha increased the wheat yield significantly in all the 3 seasons.
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