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Comparison of Physico-Chemical Properties of Organic Liquid Fertilizer Made from Seaweed by Adding Microorganism and Molasses

해초류를 이용한 유기 액비 제조 시 발효 미생물원 및 당밀 첨가에 따른 액비의 특성 비교

  • An, Nan-Hee (National Institute of Agricultural Science, Rural Development Administration) ;
  • Cho, Jung-Rai (National Institute of Agricultural Science, Rural Development Administration) ;
  • Shin, Jae-Hun (National Institute of Agricultural Science, Rural Development Administration) ;
  • Ok, Jung-Hun (National Institute of Agricultural Science, Rural Development Administration) ;
  • Kim, Seok-Cheol (National Institute of Agricultural Science, Rural Development Administration)
  • 안난희 (농촌진흥청 국립농업과학원) ;
  • 조정래 (농촌진흥청 국립농업과학원) ;
  • 신재훈 (농촌진흥청 국립농업과학원) ;
  • 옥정훈 (농촌진흥청 국립농업과학원) ;
  • 김석철 (농촌진흥청 국립농업과학원)
  • Received : 2015.11.03
  • Accepted : 2015.11.16
  • Published : 2015.12.30

Abstract

Objective of this study was to investigate characteristics of inorganic components contained in liquid fertilizer produced using seaweed by adding microorganisms and molasses. Addition of dry yeast to liquid fertilizer resulted in little change in pH and considerable increase in EC with high EC value compared to other liquid fertilizers which have microorganisms additives. Also, it was appeared that the dry yeast-added treatment had higher $NH_4-N$ concentration than other treatments. In the other hand, addition of molasses resulted in low pH compared to the control which has no additives, and EC was not different depending on the amount of molasses. $NH_4-N$ concentration in the 2% molasses added treatment was lowest and it showed a significant difference in the no and 1% molasses added treatments. In conclusion, it was shown that addition of dry yeast to liquid fertilizer increased ammonium nitrogen concentration by accelerating nitrogen mineralization, while molasses has an effect of inhibiting nitrogen mineralization. With application of organic liquid fertilizer containing seaweed increased the fresh weight of chinese cabbage.

Acknowledgement

Supported by : 국립농업과학원

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