Abstract:

In 2008, field plot experiments were conducted to investigate the effects of controlled-releases coated urea on peanut yield and apparent N recovery rates at peanut foundation seed farm, Feidong. The results showed that the application of CRUs in peanut could improve the yield significantly. In comparison with common urea, especially with the equal content of nitrogen, SPCU100% and PCU100% increased by 15.6%, 13.00% respectively, and the apparent N recovery rates was 51.14% and 54.92% respectively; SPCU70% and PCU70% increased by9.66%, 23.12% respectively, and the apparent N recovery rates was 48.36% and 60.87% respectively. Controlled-release coated urea by Kingenta had features such as efficiency, saving fertilizer, labor-saving. Application of CRUs significantly increased the apparent N recovery rates. In addition, CRUs by Kingenda also showed a beneficial result on the peanut quality. The effect of application was PCU70% in peanut.