O. KUMAR, A. A. DAVID, R. KUMAR, and B. Y. SANDEEP K. MALYAN, “EFFECT OF PRIMARY NUTRIENT AND ZINC ON NUTRIENT UPTAKE AND YIELD ATTRIBUTES OF MAIZE ( TTRIBUTES OF MAIZE (ZEA MAYS L.)”, The Bioscan, vol. 11, no. Supplement 2, pp. 513–518, Feb. 2016.