• Title/Summary/Keyword: 녹비작물

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Effects of Rice Straw Application and Green Manuring on Selected Soil Physical Properties and Microbial Biomass Carbon in No-Till Paddy Field (무경운 답에서 토양 물리성과 미생물 생체량 탄소 함량에 미치는 녹비작물 시용효과)

  • Lee, Young-Han;Ahn, Byung-Koo;Lee, Jin-Ho
    • Korean Journal of Soil Science and Fertilizer
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    • v.43 no.1
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    • pp.105-112
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    • 2010

  • Applications of plant residues and green manures generally improve the properties of soil under conventional farming system. Therefore, we investigated the improvement of selected soil physical properties, bulk density, porosity, and water content, soil penetration resistance, and soil microbial biomass carbon (SMBC) content as affected by different management practices: 1) conventional tillage without rice straw or green manure crop treatment (TNT, check plot), 2) no-tillage amended with rice straw (NTRS), 3) no-tillage amended with rye (NTR), 4) no-tillage amended with Chinese milk vetch (NTCMV), 5) no-tillage without rice straw or green manure crop treatment (NTNT), The values of bulk density, porosity, and water content ranged from 1.22 to 1.37 Mg $m^3$, from 48.3 to 54.0%, and from 35.0 to 40.2%, respectively. The management practices might positively influence the changes in the selected soil properties, especially in the second experimental year. The soil penetration resistance and SMBC content were also improved after applying rice straw and green manure crops as comparing with TNT. Therefore, applications of the rice straw and green manure crop management practices under no-tillage system positively influenced soil physical properties and soil microbial activities in paddy field.

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Growth and Yield Response of the Following Tomato Crop According to Incorporation of Green Manures into Soil (녹비의 토양환원에 따른 후작물 토마토 생육과 수량 반응)

  • Lee, In-Bog;Park, Jin-Myeon;Lim, Jae-Hyun;Hwang, Ki-Sung
    • Korean Journal of Environmental Agriculture
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    • v.25 no.4
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    • pp.346-351
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    • 2006

  • The study was performed to investigate the effect of incorporation of green manures (GM) into a sandy loam soil for organic vegetable production in the condition of plastic film house, relating to growth and yield of tomato crop. Three species of GM as perennial ryegrass, sudangrass and soybean are cultivated during the rest time of summer season and incorporated into soil just after the harvest. Thereafter tomato crop was transplanted as the following crop to soil incorporated GM. Among GM, soybean was proper as GM crop for organic farming, due to the effect of yield increase by continuous supply of nitrogen on following the tomato crop. Yield of tomato crop after soybean incorporation into soil was $4.2Mg\;ha^{-1}$ similar to $4.4Mg\;ha^{-1}$ of N-P-K standard fertilization (conventional) treatment. But perennial ryegrass and sudangrass were improper, because the biomass yield of perennial ryegrass was very low due to growth retardation by high temperature during summer season and soil incorporation of sudangrass as GM results in yield decrease of following the tomato crop caused by high C/N ratio of sudangrass itself. In conclusioa soybean incorporation into soil had advantage of producing conventional level on following the tomato yield and therefore it could recommend as GM for organic vegetable production.

  • https://doi.org/10.5338/KJEA.2006.25.4.346 인용 PDF KSCI