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YIELD AND N-UPTAKE OF WHEAT (TRITICUM AESTIVUM L.)  UNDER DIFFERENT FERTILITY LEVELS AND CROP SEQUENCE

A.M. KUMBHAR, U.A. BURIRO, F.C. OAD, Q.I. CHACHAR, M.B. KUMHAR AND G.H. JAMRO

Abstract: The investigations were carried through a series of experiments in two years to confirm the results of two cropping sequences with application of three fertilizer levels. Wheat planted after soybean produced better biological yield (6470.33 kg ha^-1), maximum harvest index (42.14%), satisfactory grain yield (2763.33 kg ha^-1) and higher N-uptake (119.26 kg ha^-1). The increased levels of nitrogen and phosphorus at 150-50 NP kg ha^-1 respectively increased biological yield (7235.50 kg ha^-1), harvest index (44.18%), grain yield (3198.19 kg ha^-1) and N-uptake (114.01 kg ha^-1). The better yield and soil fertility could be obtained by the inclusion of leguminous crop at least once in a two year cropping sequence, because leguminous crops enrich soil fertility by fixing environmental nitrogen in their root nodules, which in turn supply residual food nutrients to the succeeding crop.

Sindh Agriculture University, Tandojam, Pakistan Email: majeedkumbhar@yahoo.com