Madras Agricultural Journal
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AVAILABILITY AND UPTAKE OF NITROGEN AND PHOSPHORUS AS INFLUENCED BY AMENDMENTS AND ZINC IN ALKALI SOILS

Abstract

To assess the effect of amendments and Zn individually and in combinations" on the availability and uptake of N and P.in alkali soil, a pot study was conducted with rice as test crop. Gypsum at 50 per cent requirement in combination with prossmud (12.5 t/ha) or deincha (25 t/ha) resulted in higher available N. Addition of FYM (25 t/ha). registered the highest available P. Zinc application had the favourable influence ovar." available N, while the availability of P was in the revers? trend. Amendments and Zo significently influenced the content and uptake of N in the grain, while the effect was) not significant in straw. Zinc addition had an antogonistic effect on the content of Pin grain and straw.

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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Tamil Nadu, India.

ISSN : 0024-9602
eISSN : 2582-5321

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