Effect of Diazinon Application on Ammonia Volatilization in Submerged Incubation Soil

담수항온 처리토양에서 diazinon 처리가 암모니아 휘산에 미치는 영향

  • Han, Kang-Wan (Department of Agricultural Chemistry, Chonbuk National University) ;
  • Cho, Jae-Young (Department of Agricultural Chemistry, Chonbuk National University) ;
  • You, Young-Sun (Department of Agricultural Chemistry, Chonbuk National University)
  • Published : 1997.12.30

Abstract

A study was conducted to examine the effect of application of Diazinon at different rates in submerged soil under the application of different N fertilizers; urea, ammonium sulfate and organic fertilizer(fermented chicken dung-sawdust mixture). The levels of Diazinon application were equivalent to zero, 350 mg a. i./ha, 700 mg a. i./ha and 1050 mg a. i./ha. To 100 gr of air-dry soil, 10 mg of N, $P_2O_5$ and $K_2O$ and different levels of Diazinon were mixed thoroughly and the soil was submerged in 100 ml of distilled water. The submerged soil was incubated at $30^{\circ}C$ for 50 days. Volatilied ammonia was measured at every 10 days. The amount of ammonia volatilization was greatest in urea treated soil, followed by organic fertilizer and it was the least in ammonium sulfate treated soil. The application of Diazinon at 700 mg a. i./ha increased the volatilization of ammonia greatly in the urea treated soil. Under other fertilizers, the effect of Diazinon application was not remarkable. The increase in the soil pH during the incubation period under different fertilizer treatments tended to increase ammonia volatilization.