Changes of Chemical Properties during Liquid Fertilizer Processing using Different Organic materials
2011
Lee, G.J., Chungbuk Agricultural Research and Extension Services, Cheongwon, Republic of Korea | Jeon, J.O., Chungbuk Agricultural Research and Extension Services, Cheongwon, Republic of Korea | Park, J.H., Chungbuk Agricultural Research and Extension Services, Cheongwon, Republic of Korea | Nam, S.Y., Chungbuk Agricultural Research and Extension Services, Cheongwon, Republic of Korea | Kim, T.J., Chungbuk Agricultural Research and Extension Services, Cheongwon, Republic of Korea
This study was carried out to investigate the chemical characteristics of different organic liquid fertilizer during fermentation at plastic house in Chungbuk Agricultural Research and Extension Service. Chicken dung, soybean meal, and rice bran were used for nutrient sources. The obtained results from this study were summarized as follows; Total nitrogen contained the highest in soybean meal as 55 mgㆍkg-¹, and phosphate and potassium contained high in chicken dung and rice bran in organic liquid fertilizer materials. The pH of chicken dung was near 7.0, that of soybean meal and rice bran indicated acidity(pH 3.8~4.4). The electrical conductivity of chicken dung consistently increased during fermentation, and that of soybean meal and rice bran increased and decreased early season and increased at late incubation period. Hydrogen sulfide gas occurrence of chicken dung was 3,200 mgㆍL-¹ at early season and 1,600 mgㆍkg-¹ at late incubation period, and that of soybean meal and rice bran treatments were not or very low concentration of hydrogen sulfide gas during manufacturing period. The nitrogen and calcium content of organic liquid fertilizer were the higher in chicken dung and soybean meal than rice bran. The phosphate and magnesium content of rice bran was the high as 5.6 gㆍkg-¹ and 1.5 gㆍkg-¹, respectively. There was no difference in potassium content among the different liquid fertilizers during fermentation.
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