Effect of pelleting process of N-fertilizers on slow nitrification in the soil and its effect on yield improving of basil crop

Nitrogen is an effective material for improving the crop production and cow manure is an important resource for soil fertilization and improving physical condition of soil. However there are many factors that limit the application of ordinary composted manure. These problems are low density of manure, different nutrient requirement of the crop and rapidly nitrification. The effective solution of these problems is densification technology with molding manure compost into pellet and adjusting the nutrient content of material with adding nitrogen fertilizer. In this research the pelleting machine is used to make dry composted manure into pellets (diameter 10mm and length 50mm) with adding chemical fertilizer and binder material (bentonit) physical properties of pellets determined within moisture content range 11% and 24% (w.b.) and sorption property of pellets were researched. This study therefore focused on evaluation of effect of pelleting process on decreasing of nitrification. Results obtained showed that hardness and durability of pellets increased with decrease in moisture content and increase in applied force. Also, effects of mentioned factors on true density, bulk density and porosity were observed. The effects of slow-release from mixed pellets in basil crop yield were also observed. Pellet fertilizer is a type of slow-release N-fertilizer that slow-release N-fertilizer has long-term effects including reduced leachinglosses and enhanced N uptake, as well as. positive effects on both health and soil nutrient levels.