Comparative Assessment of Conventional and Organic Nutrient Management on Yield and Yield Components of Three Corn Cultivars

摘要

A field experiment was conducted to assess the effect of integrated nutrient management on the yield and yield components of three corn cultivar in Agricultural and Natural Resources Research Centre in Lorestan, Iran. The experimental design was a randomized complete block design arranged in factorial with three replications. The first factor comprised three corn cultivars (Single cross 704, Single cross 677 and Single cross 580) and the second factor was three levels of fertilizers [Chemical (100% urea), full organic (100% vermicompost) and integrated (50% urea and 50% vermicompost)]. The results showed that corn cultivars vary in yield components related traits such as ear length, ear diameter, seed number in row, row number, seed weight and seed a nd biological yield as well as protein yield. In addition, vermicompost application had great impact on corn yield components related traits especially when it was combined with chemical fertilizer. Integrated fertilizer management significantly increased e ar diameter, seed number in row, row number, see weight, seed and biological yield and protein yield compared to full chemical and full organic treatments. In general, t o get maximum yield, the application of integrated organic and inorganic fertilizer is best option.