LONG TERM EFFECTS OF INTEGRATED NUTRIENT MANAGEMENT ON SOIL PHYSICAL PROPERTIES AND CROP PRODUCTIVITY IN SORGHUM-WHEAT CROPPING SEQUENCE IN A VERTISOL

摘要

A study was conducted to assess the long term effects of fertilizers and FYM on physical properties and crop productivity after 19th cycle of sorghum-wheat cropping sequence in a Vertisol. The combined use of inorganic fertilizers (100 % NPK) along with FYM @ 10 t ha~(-1) significantly improved the bulk density, hydraulic conductivity, available water capacity, water stable aggregates and coefficient of linear extensibility of soil and yield of crops. Total productivity (sorghum + wheat) was found tobe positively correlated with these properties.