Madras Agricultural Journal
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EFFECT OF CONTINUOUS CROPPING AND FERTILIZATION ON DEPLETION OF MICRONUTRIENTS

Abstract

Two field experiments were conducted in the Typic Haplustalls and Typic Ustor thents soils of Tamil Nadu to determine the effect of continuous cropping and ferti- lization on the changes in micronutrient availability. There was a greater rate of depletion of micronutrients in Typic Haplustalfs than the Typic Ustarthents soils. Rate of depletion of micronutrient was highest for zinc followed by copper, manga- nese and iron in both these soils indicating the need for proper micronutrient fertilization in Typic Haplustaffs.

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