Effects of Residual Food Fermentation Solution on the production of Lettuce(Lactuca sativa L.)

상추에 대한 남은 음식물 혐기 발효액의 시용 효과

  • Chang, Ki-Woon (Dept. of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Yu, Young-Seok (Dept. of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Jung, Yun-Kyoung (Dept. of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University)
  • 장기운 (충남대학교 농업생명과학대학 농화학과) ;
  • 유영석 (충남대학교 농업생명과학대학 농화학과) ;
  • 정윤경 (충남대학교 농업생명과학대학 농화학과)
  • Published : 2001.12.30

Abstract

As part of the recycling methods, residual food through the anaerobic fermentation process was decomposed into methane gas and fermentation liquid. The research was conducted to measure the effect of application of fermentation liquid on chemical properties of soil and plant growth according to application rate and separate manure at the base of nitrogen in fermentation liquid. The fermentation liquid contained 0.52% nitrogen was applied in treatments by standard fertilizer. The treatments were composed of the control only with chemical fertilizer and N-50, N-100-4, N-100-8 were each of applied with 50, 100(6 times), 100(3 times)% of fermentation liquid contrast to standard fertilizer. Properties of fermentation liquid was high EC because of waster soluble organic compounds as well as much of salts and also contained a lot of suspended solid. The changes of soil chemical properties little occurred in before and after of experiment but EC and content of ex. Ca in soil were increased. Fresh weigh in treatments applied with fermentation is high than that of control but the difference between treatments little showed. The above result means if fermentation liquid be used instead of chemical fertilizer the volume of used fermentation liquid will be reduced by 50% of present standard fertilizer.