• Title, Summary, Keyword: Cropping system

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Interpretation of Relationship Between Sesame Yield and It's components under Early Sowing Cropping Condition

  • Shim Kang-Bo;Kang Churl-Whan;Seong Jae-Duck;Hwang Chung-Dong;Suh Duck-Yong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.4
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    • pp.269-273
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    • 2006
  • Multiple linear regression analysis was conducted to interpretate the relationship between sesame grain yield and its components under early sowing cropping condition. The t test showed that stem length, number of capsules per plant, 1000 seeds weight and seed weight per plant gave significant contribution to sesame grain yield, therefore those variables were assumed to mostly influenced components to grain yield of sesame. In the stepwise regression analysis, the predicted equation for sesame grain yield per square meter (Y) was Y = -7.900 + 0.150X1 + 0.461X5 + 15.553X6 + 8.543X7. Meanwhile, F value showed that stem length, number of capsules per plant and seed weight per plant gave significant contribution to sesame grain yield, while 1000 seeds weight did not significantly show. Based on the results, it is reasonable to assume that high yield. potential of sesame under early sowing cropping condition would be obtained by selecting breeding lines with long stem length, number of capsules per plant, and seed weight per plant, which was different result at the late sowing cropping condition in which days to flowering and maturity were assumed to be more affected factors to the sesame grain yield.

Rice cultivars adaptable for rice based cropping systems in a paddy field in the Yeongnam plain area of Korea

  • Kim, Sang-Yeol;Seo, Jong-Ho;Bae, Hyun-Kyung;Hwang, Chung-Dong;Ko, Jong-Min
    • Korean Journal of Agricultural Science
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    • v.45 no.3
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    • pp.355-363
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    • 2018
  • This study was conducted to investigate suitable rice cultivars for various rice based cropping systems in a paddy field in the Yeongnam plain area. Thirteen rice cultivars (5 early, 3 medium and 5 mid-late maturing cultivars) and three transplanting dates (June 5, June 25 and July 5) were evaluated in this study. The mid-late and early maturing cultivars for the July 5 and June 25 transplanting headed before August 30 which is the safe heading date in the Yeongnam plain area, ranging from Aug. 26 - 28 and Aug. 18 - 23, respectively. The safe harvest time of rice for double and triple cropping systems should be before the middle of October for the cultivation of the succeeding winter crops. The rice yield was the highest for the June 5 transplanting regardless of the rice cultivars, and it gradually decreased as the transplanting date was delayed from June 5 to July 5 due to a decrease in the spikelet numbers per panicle number and in the ripened grain rate. In contrast, the other yield parameters that include the panicle number per $m^2$, the 1,000-brown rice weight, and the ripened grain ratio were not significantly affected. The result indicates that based on the milled rice, heading time and harvest time, a medium maturing cultivar (Haiami and Samdeog) would be applicable to a winter barley/wheat, garlic/onion-summer rice double cropping, while a mid-late cultivar (Saeilmi, Saenuri and Hyunpoom) would be suitable for a spring potato/waxy corn-summer rice double cropping in the Yeongnam plain area. On the other hand, an early maturing cultivar (Unkwang, Jokwang and Haedamssal) would be preferable for a triple cropping because of the short growth period of rice.

Evaluation of CO2 Balance in the Barley-Red Pepper and Barley-Soybean Cropping System (보리-고추와 보리-콩 작부체계에서 이산화탄소수지 평가)

  • Kim, Gun-Yeob;Suh, Sang-Uk;Ko, Byung-Gu;Jeong, Hyun-Cheol;Roh, Kee-An;Shim, Kyo-Moon
    • Korean Journal of Soil Science and Fertilizer
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    • v.41 no.6
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    • pp.408-414
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    • 2008
  • Importance of climate change and its impact on agriculture and environment has increased with the rise Green House Gases (GHGs) concentration in the atmosphere. To slow down the speed of climate change many efforts have been applied in industrial sectors to reduce GHGs emission and to enhance carbon storage. In agricultural sector, many researches have been performed on GHGs emission reduction, but few on the role of carbon sink. In this study, we investigated carbon balance and soil carbon storage in agricultural field in the barley-red pepper and barley-soybean cropping system. With the system for automatic measuring of carbon dioxide, net ecosystem production(NEP) was estimated to be $6.3ton\;CO_2\;ha-1$ for N-P-K chemical fertilizer treatment plot and $10.6ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer with swine manure treatment plot in the barley-soybean rotation cropping. In the barley-red pepper rotation cropping, it was $12.0ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer treatment plot and $13.2ton\;CO_2\;ha^{-1}$ for N-P-K chemical fertilizer with swine manure treatment plot. Soil carbon storage rate was estimated to be $0.7ton\;C\;ha^{-1}$ for the barley-soybean cropping system and $0.5ton\;C\;ha^{-1}$ for barley-pepper cropping system. In appeared that agricultural lands may contribute to the greenhouse effect as a potential carbon sink preserving carbon into soil.

Milled Rice Quality and Physicochemical of Korean Native Rice Cultivars Grown in Different Crop Residue and Tillage Management (유기물 피복과 경운관리에 따른 재래벼의 쌀 품위 및 이화학적 특성)

  • Lee Byung Jin;Son Young Son;Ahn Jong Wwoong;Park Jae Hyun;Kang Jin Ho;Choi Zhin Ryong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.50 no.spc1
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    • pp.77-84
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    • 2005
  • Three new rice farming systems, i.e. (1) straw-mulched no-till rice cropping system(SMNTRCS), (2)straw-mulched no-till rice-vetch cropping system (SMNTRWCS), (3)conventional rice-barley cropping system(CRVCS) have been established and compared with (4)conventional rice cropping system(CRCS). Grain appearance of brown rice of Korean native rice cultivars in SMNTRCS and SMNTRVCS were better than those in CRBCS and CRCS. Grain appearance of milled rice in SMNTRCS was better than those of other cropping systems. Korean native rice cultivars showed more white belly and broken rice than those of recommended rice cultivars. Mg and K contents of Korean native rice cultivars were the highest in SMNTRVCS. Protein contents of all the cultivars tested were the highest in SMNTRCS. Protein contents of Korean native cultivars were higher than those of recommended cultivars. Amylose contents of the cultivars tested were from 16 to 22 percent, while those of Aedal and Jenmjo were significantly higher than those of the other cultivars. Alkali digestibility values(ADV) of milled rice grain, tested in $1.2\%$ potassium hydroxide for 23 h at $30^{\circ}C$, showed varietal differences and the cultivars grown in CRBCS were the highest and the lowest in CRCS.

Effect of the Application of Cattle Slurry on Productivity and Soil Organic Matter of Rye and Rye-Red Clover Mixture (Rye 단작 및 Rye-Red Clover 혼작에서 우분슬러리 시용이 작물의 생산성 및 토양 유기물 함량에 미치는 영향)

  • Choi, Yeun-Sik;Jung, Min-Woong;Choi, Ki-Choon;Yook, Wan-Bang
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.28 no.3
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    • pp.237-244
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    • 2008
  • This study was conducted to investigate the effects of the cropping system of forage crops and application of cattle slurry on productivity of forage crops and soil fertility. The field experiments were conducted on the silt clay loam at Gongiam, Kwangju, Kyung-gi province in Korea for two years. This study was arranged in split plot design with three replicates. Main plots were the cropping systems, such as single crop and mixed crops. Subplots were the application rate of cattle slurry, such as 0, 150 and 300 kg N/ha. The yields of dry matter (DM) and nitrogen (N) were hardly influenced by the cropping system, whereas DM and N yields enhanced as increasing the rates of cattle slurry application (p<0.05). The contents of crude protein (CP) and total digestible nutrients (TDN) were hardly influenced by the cropping system, whereas CP content increased as increasing the rates of cattle slurry application (p<0.05). TDN was not differentially influenced by cattle slurry application. Neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were hardly influenced by the cropping system and application of cattle slurry. Organic matter (OM) content in soil samples collected at the end of the experiment were remarkably higher than those in the beginning of the experiment. The OM content of soil was significantly increased by application of cattle slurry (p<0.05).

Effects of Green Manure Crops and Rotational Cropping System on Growth and Yield of Sesame(Sesamum indicum L.) (참깨의 연작장해 경감 녹비작물 선발 및 윤작효과)

  • Nam, Sang-Young;Kim, In-Jae;Kim, Min-Ja;Kang, Hyo-Jung;Yun, Tae;Rho, Chang-Woo;Min, Kyeong-Beom;Lee, Cheol-Hee
    • Korean Journal of Plant Resources
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    • v.20 no.5
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    • pp.404-408
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    • 2007
  • The green manure crops such as rye, hairy vetch and scotch oat were applied to reduce the injury by continuous cropping system(CCS) of sesame(Sesamum indicum L.) cultivation, which manure crops was sowed in latter-September or mid-October and returned to soil in the next year of May. The growth and yields were increased as 33%(65.0kg/10a) in the rotational cropping system(RCS) compared to continuous cropping system of 48.9kg/10a. In the CCS of sesame, it was increased as $10{\sim}15%$ in the green manure crop cultivation, and rye cultivation was the most effective crop to reduce the injury of continuous cropping in the green manure crops. The RCS displayed lower disease outbreak and Fussarium oxysporum density in the soil compared with the CCS, and the green manure crop showed good effect in the CCS of sesame. In the RCS, the porosity was most high in the RCS and CCS of rye cultivation, while rye and hairy vetch was effective way to reduce the injury of continuous cropping. The outbreaks of wilt disease and phytophthora blight were increased as the CCS years, however displayed lowest outbreaks of disease and the yields showed highest in the rye cultivation.

Study on the Promising Double Cropping System of Summer and Winter Forage Crop in Paddy Field (논에서 여름 및 겨울 사료작물의 최적 작부체계에 관한 연구)

  • Kim Won Ho;Shin Jae Soon;Lim Young Chul;Seo Sung;Kim Ki-Yong;Lee Jong Kyung
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.25 no.4
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    • pp.233-238
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    • 2005
  • This experiment was conducted from 2002 to 2004 at paddy field of National Livestock Research Institute, RDA, Suwon to investigate the select the promising double cropping system on growth, yield and nutritive value of summer forage(silage corn, sorghum$\times$ sudangrass hybrid, japanese millet, jobs tear, rice) and winter forage(rye, barley, Italian ryegass) and also to determine the best double cropping system necessary to maximize the total forage yield of winter forages plus summer forage crops. Among agronomic characteristics, lodging tolerance appeared to be highest in the summer forage crop including silage corn, jobs tear and rice compared to other forage crops. And lodging tolerance appeared to be highest in the winter forage crop including barley compared to rye and Italian ryegrass. The highest dry matter yield of 27,766 kg/ha, 27,296 kg/ha and 25,365 kg/ha obtained from an whole crop barley+sorghum$\times$ sudangrass hybrid, rye+sorghum$\times$ sudangrass hybrid and Italian ryegrass+sorghum$\times$sudangrass hybrid double cropping sequence in combination among the fifteen cropping systems((P<0.05). And dry matter yield of barley+silage corn and rye+silage com were 23,766 and 23,572 kg/ha.

Nitrogen Fixation of legumes and Cropping System for Organic Forage Production (두과 작물의 질소고정과 유기조사료생산을 위한 작부체계)

  • 이효원;박형수
    • Korean Journal of Organic Agriculture
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    • v.10 no.1
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    • pp.49-63
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    • 2002
  • In order to supply 85% of total organic feed in ruminants and 80% in non-ruminants for organic animal production, nitrogen fixation ability of legume should be used in domestic roughages production. 50% of Europe organic farmer use intercropping legume in as green manure. This article is dealing with amount of biologically fixed nitrogen used by legumes and methods for estimating the transfer of biologically fixed N in rotation and separating the N benefit into fixed N and non-fixed N components are reviewed. Available data indicate that transfer amount of N to non legumes was from 50∼9.6(kg/ha) in legume-cereal rotations and proportion of legume N varied with seasons, 90% in summer, 50% in autumn. The important point in cropping system for legumes have to be included for organic forage production 6 year rotation is based on pasture system of 3 year pasture + 2 year annual(com, sudangrass), again pasture. Rye, barly and Italian ryegrass+legumes(vetch, crimson and pea) can be one of option in spring, com, soybean, sudangrass and Japanese bamyard millet would be seeded after spring harvest in the field. Farmer can make good use of rice paddy field as forge production potential area after harvesting rice. Italian, burly and rye+vetch and crimsonclover may be grown in autumn or spring time at the rice field.

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Study on Optimum Forage Cropping system in Reclaimed Tidal Land (간척지 재배에 적합한 사료작물 작부체계 선발연구)

  • Shin, Jae-Soon;Kim, Won-Ho;Yoon, Sei-Hyung;Seo, Sung
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.27 no.2
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    • pp.117-122
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    • 2007
  • This experiment was carried out to select the optimum forage cropping system at the Dae-Ho reclaimed tideland, Korea from March, 2004 to October, 2006. Emergency rate of summer crop such as sorghum ${\times}$ sudangrass was low ($23%{\sim}30%$). Winter crop such as Italian ryegrass after continually cultivating wholecrop rice were highest (91%). Wintering rate of Italian ryegrass after continually cultivating wholecrop rice was highest and lowest in wholecrop barley after continually cultivating sorghum${\times}$sudanuass. In cropping system, fresh and dry matter yield of annually wholecrop rice+Italian ryegrass (50,807kg, 15,065kg) were highest and lowest in annaually serghum${\times}$sudangrass+wholecrop barley (17,2471kg, 5,209kg), respectively.

Optimal Levels of Additional N Fertigation for Greenhouse Watermelon Based on Cropping Pattern and Growth Stage

  • Sung, Jwakyung;Jung, Kangho;Yun, Hejin;Cho, Minji;Lim, Jungeun;Lee, Yejin;Lee, Seulbi;Lee, Deogbae
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.6
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    • pp.699-704
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    • 2016
  • An estimation of optimal requirement of additional N by cropping pattern and growth stage is very important for greenhouse watermelon. The objectives of this study were to estimate an amount of optimal additional N based on growth, N uptake and yield of watermelon. In order to achieve these goals, we performed the study at farmer's greenhouse with a fertigation system and watermelon was cultivated three times (spring, summer and autumn) in 2015. The levels of additional N were set up with x0.5, x0.75, x1.0 and x1.5 of the $NO_3$-N-based soil-testing N supply for watermelon cultivation. The trends of growth and N uptake of watermelon markedly differed from cropping pattern; spring (sigmoid), summer and autumn (linear). The yield of watermelon was the highest at summer season and followed by autumn and spring. Also, the x1.5N showed a significantly higher yield compared to other N treatments. On the basis of growth, N uptake and yield of watermelon, we estimated an optimal level of additional N by cropping pattern and growth stage as follows; 1) spring (transplanting ~ 6 WAT : 6 ~ 14 WAT : 14 ~ harvest = 5 : 90 : 5%), summer (transplanting ~ 4 WAT : 4 ~ 8 WAT : 8 ~ harvest = 25 : 50 : 25%) and autumn (transplanting ~ 4 WAT : 4 ~ harvesting : 50 : 50%). In conclusion, nutrient management, especially N, based on cropping pattern and growth stage was effective for favorable growth and yield of watermelon.