• Title, Summary, Keyword: Green manure

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Effect of Cover Crop Species and Liquid Manure Application Rate on Green Manure Production, Leaf Mineral Content, Fruit Quality and Soil Chemical Properties in Pear Orchard

  • Lee, Seong Eun;Park, Jin Myeon;Park, Young Eun;Choi, Dong Geun
    • Korean Journal of Soil Science and Fertilizer
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    • v.47 no.6
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    • pp.558-562
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    • 2014
  • Cover cropping and liquid manure application are considered as effective ways to replace the use of chemical fertilizer in orchard. This study was conducted to investigate the effect of cover crop species and liquid manure application rate on green manure production, leaf mineral content, fruit quality and soil chemical properties in pear orchard. The treatments include rye and hairy vetch as cover crops, two liquid manure application levels based on N and $K_2O$ requirement on each cover crop species, and chemical fertilizer as control. Green manure production was higher in hairy vetch than in rye. K content of pear leaves and soil exchangeable K content increased in N based liquid manure application treatments. The yield was higher in rye + liquid manure and fertilizer treatments, and fruit quality was not different between the treatments. Taking all of these into account, rye + $K_2O$ requirement-based liquid manure application is recommended in pear orchard for not only sufficient nutrient supply but also prevention of any problem related with soil $K_2O$ accumulation in pear orchard in long-term perspective.

Effects of Continuous Application of Green Manures on Microbial Community in Paddy Soil

  • Kim, Sook-Jin;Kim, Kwang Seop;Choi, Jong-Seo;Kim, Min-Tae;Lee, Yong Bok;Park, Ki-Do;Hur, Seonggi
    • Korean Journal of Soil Science and Fertilizer
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    • v.48 no.5
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    • pp.528-534
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    • 2015
  • Green manure crops have been well recognized as the alternative for chemical fertilizer, especially N fertilizer, because of its positive effect on soil and the environment. Hairy vetch and green barley are the most popular crops for cultivation of rice in paddy field. This study was conducted to evaluate effects of hairy vetch and green barley on soil microbial community and chemical properties during short-term application (three years). For this study, treatments were composed of hairy vetch (Hv), green barley (Gb), hairy vetch + green barley (Hv+Gb), and chemical fertilizer without green manure crops (Con.). Hv+Gb treatment showed the highest microbial biomass among treatments. Principal component analysis (PCA) showed that PC1 (73.0 %) was affected by microbial biomass and PC2 (21.5 %) was affected by fungi, cy19:0/18:$1{\omega}7c$ (stress indicator). Combined treatment with hairy vetch and green barley could be more efficient than green manure crop treatment as well as chemical fertilizer treatment for improvement of soil microorganisms.

Effect of Green Manure Crop Cultivation on Soil Chemical Properties and Root Rot Disease in Continuous Cropping Field of Ginseng (녹비작물 재배가 토양화학성 및 인삼뿌리썩음병 발생에 미치는 영향)

  • Lee, Sung Woo;Park, Kyung Hoon;Lee, Seung Ho;Jang, In Bok;Jin, Mei Lan
    • Korean Journal of Medicinal Crop Science
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    • v.25 no.1
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    • pp.1-9
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    • 2017
  • Background: Some plants have harmful effects on fungi and bacteria as well as other plants. Incorporating such plant into soil as green manure is effective in reducing population densities of soil pathogens. Methods and Results: Twenty-three species of green manure crops were cultivated after the harvest of 6-year-old ginseng and then incorporated into the soil at the flowering stage. The following year, the root rot ratio of 2-year-old ginseng and soil chemical properties were investigated. In the absence of green manure addition, the $NO_3$ content, electric conductivity (EC), and K content decreased by 95%, 79% and 65%, respectively. In the presence of green manure addition, $P_2O_5$ and $NO_3$ contents reduced by 41% and 25%, respectively. The "survived root ratio" of 2-year-old ginseng significantly increased by 56.2%, 47.5%, and 47.3%, in the Sorghum sudanense, Ricinus communis and Helianthus tuberosus treatment, respectively. In addition, there was a significant increase in the "survived root ratio" in the Secale cereale, Chrysanthemum morifolium, Atractylodes macrocephala, and Smallanthus sonchifolius treatments. The "survived root ratio" of ginseng showed a significant positive correlation with the soil pH and a negative correlation with the $NO_3$ contents, and EC. Conclusions: Cultivation of plant form the Chrysanthemum family as green manure, using mainly the rhizomes was effective for the control of root rot disease of ginseng.

Effect of green manure barley and hairy vetch on soil characteristics and rice yield in paddy (녹비보리와 헤어리베치 토양투입에 따른 벼 수량 및 토양특성)

  • Cho, Hyeoun-Suk;Park, Woo-Young;Jeon, Weon-Tai;Seong, Ki-Yeung;Kim, Chung-Guk;Park, Tae-Seon;Kim, Jae-Deok
    • Korean Journal of Agricultural Science
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    • v.38 no.4
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    • pp.703-709
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    • 2011
  • This study was conducted at Korea's typical soil, loamy soil, to figure out the effect of how barley green manure (B), hairy vetch (HV) and the mixed-planting hairy vetch with barley green manure (HV/B) affecting on the yield of rice, usage of nutrient and soil characteristics. Supplying amount of nitrogen from HV, HV/B and B were 172.8 kg $ha^{-1}$, 64.3 kg $ha^{-1}$ and 38.6 kg $ha^{-1}$, respectively. Hairy vetch had the highest plant height and SPAD of rice and next was hairy vetch/barley, chemical fertilizer (CF), none fertilizer (NF), and green manure barley. The amount of rice yield was 5.51 ton $ha^{-1}$ with HV, and 4.24 ton $ha^{-1}$ with HV/B. The chemical characteristics of soil showed lower pH and exchangeable cations (Ca and Mg) at B, HV and HV/B plot rather than that of chemical fertilizer (CF) plot. However, the physical characteristics of soil and the porosity rate showed better tendency at the green manure crops than CF. Nitrogen nutrient balance was showed the most balanced at CF, otherwise field of application of green manure crops were required the appropriate nutrition management if future crops would be cultivated because nitrogen nutrient could be devastated or accumulated.

Evaluation of Cropping Model of Green Manure Crops with Main Crops for Upland-Specific

  • Chung, Doug Young;Park, Misuk;Cho, Jin-Woong;Lee, Sang-Eun;Han, Kwang-Hyun;Ryu, Jin-Hee;Hyun, Seong-Hoon
    • Korean Journal of Soil Science and Fertilizer
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    • v.46 no.2
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    • pp.81-86
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    • 2013
  • For organic farming, green manure crops such as leguminous forages and barley have been broadly used to improve soil fertility and soil physical and chemical properties by repeatedly cutting and mulching them directly as winter crop in the field in the rotation. In this investigation we selected 78 agricultural farm corporations as well as individual organic farmhouses related to crop rotation from greenmanure crops to main crops in order to analyze the relationship of cropping system between main crops and green manure crops. The results showed that the green manure crops were divided into two groups as leguminous and nonleguminous crops, representing that those are limited to specific climate and farming systems of regions. Also the 10 or less green manure crops including sudangrass, hairyvetch, italian ryegrass, sorghun, buckwheat, oat, pea, rye, clover, and canola which belong to leguminous crops which are presently cultivated from the organic farmhouses within the rotational crop system. We also confirmed that the major main crops are sweet potato, soybean, corn, tobacco, spinach from usage frequency analyzed by NetMiner H 2.6 which was used to estimate the rotational cropping system among the green manure crops and main crops.

Effects of Rice-green Manure Crop Cropping Systems on Soil Characteristics and Rice Yield in Paddy Field

  • Cho, Hyeoun-Suk;Jeon, Weon-Teai;Seong, Ki-Yeung;Kim, Chung-Guk;Jeong, Kwang-Ho;Park, Woo-Yeong
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.153-156
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    • 2011
  • Supplying rate of nitrogen at HV was 172.8 kg $ha^{-1}$, HV/B was 64.3 kg $ha^{-1}$ and B was 38.6 kg $ha^{-1}$. The Rice yield was 7.05 ton $ha^{-1}$ when the nitrogen supply was the largest with HV and 5.42 ton $ha^{-1}$ was produced on HV/B. The chemical characteristics of soil have lower pH and exchangeable cations(Ca and Mg) at B, HV and HV/B, rather than at CF because green manure was applied at the former step. However, the physical characteristics of the soil and the porosity showed different tendency which was that it was better at the green manure crops than CF. Nitrogen nutrient balance was showed the most balanced at CF and field of application of green manure crops were required the appropriate management if future crops would be cultivated because nitrogen nutrient could be exhausted or accumulated.

Changes of Soil Microbe communities in Plastic Film House by Green Manure Crops Cultivation

  • Won, J.G.;Jang, K.S.;Hwang, J.E.;Kwon, O.H.;Jeon, S.G.;Park, S.G.;Park, K.C.;Suh, Y.J.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.149-152
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    • 2011
  • To improve the soil condition for no-tillage organic pepper cultivation, four different green manure crops were cultivated. Fertilizer supply was depended on the biomass of the cultivated green manure crops, nitrogen supplies were 314kg in Vicia villosa and 341kg $ha^{-1}$ in Vicia angustifolia. In the microbial community analyzed by phospholipid fatty acid (PLFA) method, soil microbe populations were different among the green manure crops and fungi group was increased at Vicia angustifloia and Vicia villosa. The biological ratio indexes of fatty acids in the soils, the ratio of Gram-negative to Gram-positive bacterial PLFA and Ratio of aerobes to anaerobes were high at Vicia hirsute and Vicia tetrasperma suggesting the enrich of the aerobic conditions. The ratio of saturated to unsaturated fatty acids increased at Vicia angustifloia and Vicia villosa suggesting anaerobic conditions. Abundant biomass and uncomposted organic matter, the ratio of fungi to bacteria was increased at Vicia angustifloia and Vicia villosa.

Effect of seeding rate of Crotalaria (Crotalaria juncea L.) on Green Manure Yield and Nitrogen Prodution in Upland Soil

  • Cho, Hyeoun-Suk;Seong, Ki-Yeung;Park, Tea-Sun;Seo, Myung-Chul;Kim, Mi-Hyang;Kang, Hang-Won;Lee, Hye-Jin
    • Korean Journal of Soil Science and Fertilizer
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    • v.46 no.6
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    • pp.445-451
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    • 2013
  • We researched nitrogen and green manure yield of crotalaria by seeding rate; 50, 60, 70, 80, 90 kg $ha^{-1}$ in upland soil to find out crotalaria's optimal seeding rate. Crotalaria's plant height and number of leaves increased when the harvest time was later regardless of its seeding rate. Its nitrogen content of above-ground part was 19.8 g $ha^{-1}$, and C/N ratio was 22.5. The highest nitrogen content (50.3 g $ha^{-1}$) was found in flowers part, followed by its leaves, roots and stems. The green manure yields of crotalaria increased when the harvest time was later. The green manure yield of crotalaria was biggest in 50kg $ha^{-1}$ which was low in seeding rate. It tended to decrease when the seeding rate was higher, and the nitrogen yield had the same tendency. Therefore, the appropriate seeding rate was 50kg $ha^{-1}$ and the time for application to soil was considered to be the flowering stage.

Effect of Green Manure Crops Incorporation for Reduction of Pythium zingiberum in Ginger Continuous Cultivation (생강연작재배지에서 Pythium zingiberum 경감을 위한 녹비작물 재배효과)

  • Jung, Yu Jin;Nou, III Sup;Kim, Yong Kwon;Kang, Kwon Kyoo
    • Korean Journal of Plant Resources
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    • v.28 no.2
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    • pp.271-278
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    • 2015
  • This experiment was carried out to evaluate the effects of green manure crops on the changes of chemical properties and microorganisms in soil of continuous ginger cultivation. The biomass and nitrogen absorption of green manure crop were the highest in crimson clover. After cropping, soil phosphate content was the lowest in orchard grass, however, T-N content was the highest of hairy vetch > crimson clover > orchard grass. Also real-time PCR analysis was conducted to measure density of Pythium zingiberum in soil of before and after incorporation of green manure crop. Density of P. zingiberum was the lowest of all the green manures. In this results are summarized that green manure cropping reduced salt accumulation and density of P. zingiberum in continuous ginger cultivation.

Effects of Green Manure Cropping on Soil Biomass-C and Soil Fertility in Green House Soil (시설 하우스 토양에서 녹비작물 재배가 Biomass-C와 양분변화에 미치는 영향)

  • Lee, Byung-Jin;Yoon, Tae-Hyun;Cho, Woo-Tae;Jun, Hyun Sik;Cho, Young-Son
    • Korean Journal of Organic Agriculture
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    • v.21 no.4
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    • pp.647-657
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    • 2013
  • This experiment was done to evaluate the effects of green manure cropping in green house soil on the changes of soil nutrients and soil microorganisms. The biomass of green manure crop was the highest in ryegrass and nitrogen absorption was the highest in hairy vetch. After cropping, soil phosphate content was the lowest in ryegrass, however, biomass C was the highest of all the green manures. Nitrogen uptake of plant and nitrogen content of the soil after the experiment showed a negative correlation. Total N content of soil was increased in hairy vetch plot, but decreasing tendency showed in the ryegrass and common crabgrass plots. In this results are summarized that green manure cropping greatly reduced salt accumulation in green house.