Effect of integrated nutrient supply on growth, yield and nutrient uptake by maize (Zea mays)-wheat (Triticum aestivum) cropping system

A long-term fertilizer experiment initiated in 1997 at Instructional Farm of the Rajasthan College of Agriculture, Udaipur, was selected for this investigation during 2000-01 and 2001-02, to evaluate the effect of integrated nu- trient supply on productivity and nutrient uptake of maize (Zea mays L.)-wheat miticum aestivum L. emend. Fiori & Paol.) cropping system. Maximum plant height and leaf-area index (LAI) of maize were observed by applying 150% NPK, while dry matter was found maximum with 100% NPK + FYM 10 tonneslha. The results of both these treatments were at par in all growth parameters. Highest maize grain and stover yields were obtained by apply- ing 150% NPK, though the results were at par with those obtained with 100% NPK + FYM 10 tonneslha. Applica- tion of 100% NPK + FYM 10 tonneslha showed highest values of growth parameters and grain yield of wheat, while maximum straw yietd was recorded with 150% NPK. However, these 2 treatments were found at par. The balanced and integrated nutrient supply to maize and wheat showed significantly higher uptake of primary nutri- ents.