Investigation Role of Vermicompost to Improve Quantitative and Qualitative Characteristics of Corn (Zea mays L.) Production

Overuse of different chemical fertilizers is one of the causes for the degradation of environment and soil. Biological fertilizers are the newest and most technically advanced way of supplying mineral nutrients to crops. Compared to chemical fertilizers, their supply nutrient for plant needs, minimizes leaching, and therefore improves fertilizer use efficiency. Vermicompost is an organic compound that is microbial active and rich in nutrients that results from the interaction of earthworms and microorganisms with organic matter decomposition. In vermicomposting process, earthworms are used to enhance the process of residue conversion. Vermicomposting is faster than composting and the resulting earthworm castings are rich in microbial activity and plant growth regulators, and fortified with pest repellence attributes as well. Vermicomposting reduces the C:N ratio and retains more N than the traditional methods of preparing composts. It can improve seed germination, growth and yield of crops. Current research was conducted according evaluate results of valid researcher. Evaluation result of many researchers revealed apply vermicompost had positive effect to improve plant height, Number of Row per Ear, Number of Seed per Row, Number of seed per spike, Number of spike per m2, Seed weight, Biologic yield, Seed yield, Harvest index, Growth indices and Protein content in compare control treatments. Addition of vermicompost to soil contributes to the nutrient requirements of the plant, as well as the improvement of the physical and physical condition of the vital soil and creates a suitable bed for root growth, increases the growth of shoot and dry matter production, and ultimately improves the agrophysiological traits and crop production. It seems consume 10 t.ha-1 vermicompost can lead to achieve highest yield and can be advised to farmers.