Effects of Application Method of Dairy Liquid Manure on Productivity of Silage Corn and Sorghum × Sudangrass Hybrid and Soil Characteristics

젖소액비 시용방법이 담근먹이 옥수수와 수수 × 수단그라스 잡종의 생산성 및 토양특성에 미치는 영향

  • Shin, J.S. (National Livestock Research Institute, RDA) ;
  • Lee, H.H. (Division of Variety Test, National Seed Management Office) ;
  • Shin, D.E. (National Livestock Research Institute, RDA) ;
  • Jo, Y.M. (National Livestock Research Institute, RDA) ;
  • Jung, E.S. (National Livestock Research Institute, RDA) ;
  • Lee, J.K. (National Livestock Research Institute, RDA) ;
  • Yoon, S.H. (National Livestock Research Institute, RDA)
  • Published : 1999.12.30

Abstract

The experiment was carried out to find the effects of the application method of dairy liquid manure on productivity of silage corn(P3352) and sorghum $\times$ sudangrass hybrid(P988) and physical and chemical properties of soil during 2 years at Suwon. Crude protein content of T1(Chemical fertilizer) was highest by 6.5%, 8.9% in both forage, respectively, but total digestible nutrient(TDN) percent of T3(dairy liquid manure, basal + chemical fertilizer, topdressing) was highest by 73.8%, 59.0% in both forage, respectively. In TND yield, it was little different between T1(9.5 MT/ha) and others(8.4~9.3 MT/ha) at silage corn, but T4(chemical fertilizer at basal + dairy liquid manure at topdressing) was highest as 13.3 MT/ha at sorghum $\times$ sudangrass hybrid(p<0.05). pH of the soil after experiment was lower than that of the soil before experiment in the both forages, but soil organic matter was high at after trial than before trial. Available phosphorous and exchangeable cation were not shown the regular trend in this experiment. Based on the results of this experiment, it was not shown among different application method for silage corn (P3352), but application of chemical fertilizer at basal and liquid manure at topdressing was good for sorghum $\times$ sudangrass hybrid(P988).