Effect of Application Level of Animal Manure on the Nitrate Concentration, Sugar Content and Intake of Forage Sorghum X Sudangrass Hybrid

가축분 시용수준이 수수 X 수단그라스 교잡종의 질산태질소 함량과 당도 및 채식률에 미치는 영향

  • Seo, S. (National Livestock Research Institute, RDA) ;
  • Kim, J.G. (National Livestock Research Institute, RDA) ;
  • Chung, E.S. (National Livestock Research Institute, RDA) ;
  • Kim, W.H. (National Livestock Research Institute, RDA) ;
  • Choi, G.J. (National Livestock Research Institute, RDA) ;
  • Lee, J.K. (National Livestock Research Institute, RDA)
  • 서성 (농촌진흥청 축산기술연구소) ;
  • 김종근 (농촌진흥청 축산기술연구소) ;
  • 정의수 (농촌진흥청 축산기술연구소) ;
  • 김원호 (농촌진흥청 축산기술연구소) ;
  • 최기준 (농촌진흥청 축산기술연구소) ;
  • 이종경 (농촌진흥청 축산기술연구소)
  • Published : 2002.06.01


A field experiment was carried out to determine the effect of application level of animal manure on the nitrate nitrogen concentration, sugar content and animal intake of forage sorghum $\times$ sudangrass hybrid (Sorghum bicolor (L.) Moench, cv. Pionee. 988) in 1995. The application amount of animal manure were 50, 100 and 150MT in cattle manure, 20, 40 and 80MT in swine manure, and 10, 20 and 40MT/ha in poultry manure. Non-application plot(control) was involved. The nitrate nitrogen concentration was increased with increasing of application level of animal manure(P<0.05). Average nitrate nitrogen concentration was 397, 512, and 609mg/kg at low, medium and high application level of animal manure. The nitrate nitrogen concentration by plant height was 438mg/kg at 50~60m of plant height, 454mg at 100~120cm, and 418mg at 200~220cm. The nitrate nitrogen concentration of stems was 376mg, and significantly higher than that(135mg) of leaves(P<0.05) regardless of animal manure type, and lower parts of stems and leaves were significantly higher than those of upper parts of plants(P<0.05). Average nitrate nitrogen concentration of leaves was 151mg at lower, and 58mg at upper parts of plants, and the concentration of stems was 357mg at lower, 511mg at middle, and 610mg at upper parts of plants. The sugar contents of sorghum $\times$ sudangrass hybrid was decreased with increasing of application level of animal manure(P<0.05). Average sugar content was 4.9, 4.4, and 4.3。 at low, medium and high application level of animal manure. The sugar content by plant height was 3.9。 at 50~60 and 100~120cm of plant height, and 6.1。 at 200~220cm of plant height. Animal intake of sorghum $\times$ sudangrass hybrid was decreased greatly with increasing of application level of animal manure. Average intake was 73.9, 55.7, and 52.3% at low, medium and high application level of animal manure. The intake by animal manure type was 73.7% in cattle, 59.7% in swine and 62.5% in poultry manure.


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