TY - BOOK AU - TALUKDAR, Narayan Chandra TI - Influence of continous application of inorganic fertilizers in a fixed maize-wheat rotation on the changes in nutrient content of soil Ludhiana U1 - 631.8 T12I PY - 1983/// PB - Ludhiana KW - FERTILIZERS AND MANURES KW - MAIZE - WHEAT. NITROGEN. PHOSPHORUS KW - SOIL FERTLLITY KW - SOILS N2 - Available N determined by hot alkaline permanganate method decreased due to continuous cropping with no or low level of N fer1ilizers Application of increasing level of N with P raised available N and highest increase was from 118 to 132 and 61 to 80 kg/h ER -