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Birsa Agricultural University, Ranchi

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19881
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Subject: Agroforestry × End date: 1989 × Start date: 1988 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    STUDIES ON CROP SEQUENCES AND THEIR EFFECT ON SOIL FERTILITY
    (Birsa Agricultural University, 1988) SAHAY, GOPALJI; THAKUR, R.
    A field experiment was conducted during 1985-86 in sandy clay loan soils at the experimental corn of Birsa Agricultural University, Ranchi to study the effect of cropping sequences on grain yield, net return and soil fertility. Maize among Kharif crops and maize-wheat rotation were the highest grain producer with maximum net return, benefit cost ratio and per day net return. Legume based crop rotations not only maintained the soil fertility but enriched organic carbon, available nitrogen, and phosphorus and potash status of the soil and also boosted up the grain yield of succeeding wheat crop. In spite of greater removal of potassium by crops than added by fertilization as indicated by negative balance, the K status of soil increased over initial value under all the cropping sequences. The most productive maize-wheat rotation removed 153.4 kg N, 24.5 kg P and 26.5 kg K ha which was significantly higher than the removal by other crop rotations