• Title/Summary/Keyword: cropping system

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Yield and Nitrogen Uptake under Reduced Nitrogen Fertilizer during Early Growth of Rice in the Rice-Barley Double Cropping System

  • Seo, Jong-Ho;Cho, Hyeon-Suk;Kim, Chung-Guk;Lee, Jin-Mo;Park, Seong-Ho
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.1
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    • pp.1-6
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    • 2004
  • N fertilizer required by rice could be reduced greatly in the rice-barley double cropping system than in the rice single cropping system. This study was conducted to investigate how much of the N fertilizer during the early stage of rice in the rice-barley double cropping system, could be saved compared to that in the rice single cropping system. This experiment was carried out at the paddy field of the National Crop Experiment Station in Suwon, Korea during three years from 1999 to 2001. Amounts of soil mineral nitrogen (SMN) and SPAD values of rice leaf during rice growing season in the rice-barley double cropping system were higher than those in the rice single cropping system under the same amount of N application during two years. Yield and N uptakes of rice at harvesting time were also higher in the rice-barley double cropping system than in the rice single cropping system during two years. Yield and N uptake of rice in the rice single cropping system were decreased when basal N fertilizer was omitted, but those reductions were not found by either omitting basal N fertilizer or omitting N fertilizer at tillering stage in the rice-barley double cropping system during 2000 and 2001. But yield and N uptakes of rice were decreased by 70 kg/10a and 2kgN/10a by the omission of both N application at basal and tillering stages in the rice-barley double cropping system in 2002. It was concluded that N fertilizer as much as tillering N fertilizer could be saved in the rice-barley double cropping system.

Survey of major cropping system using paddy field in Korea

  • Choi, Weon Young;Hwang, Chung Dong;Seo, Jong Ho;Kim, Sang Yeol;Oh, Myung Kyu;Yoo, Sueng Oh
    • Proceedings of the Korean Society of Crop Science Conference
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    • pp.343-343
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    • 2017
  • This study was conducted to investigate cropping system using paddy field in 152 cities and counties of Korea. Out of the 152 cities and counties, 106 regions responded(70%). The number of cultivated crops in 2 and 3 cropping system using paddy field was 48 crops. Among these, 35 crops were cultivated in winter and spring, 27 crops were cultivated in summer and fall. There were 33 crops in paddy field after cultivating rice. Among these, 11 crops were cultivated in spring and 26 crops were in fall-winter. There were 44 crops in paddy field without cultivating rice. Among these, 19 crops were cultivated in spring, 27 crops were in summer, 15 crops were in fall. Total cropping systems in Korea were 138 types, 2 cropping system were 119, among them outdoor crops were 77, using facility crops were 42, and 3 cropping system crops were 19. Cropping system of Jeonbuk province was 45 types and it was the most in Korea. Cropping systems of southern area were more various than those of middle-northern area in Korea.

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Studies on the Cropping System of Perilla in Middle Provinces of Korea (전.후작물 도입에 의한 중부지역 들깨 작부체계에 관한 연구)

  • 남상영;김인재;김민자;이철희;김태수;박충범
    • Korean Journal of Plant Resources
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    • v.16 no.2
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    • pp.134-140
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    • 2003
  • To increase self-sufficiency ratio and agricultural income, six cropping systems by introducing several crops in perilla were tested from 2001 and 2002. Weed occurrence was high in barley+perilla and safflower+perilla cropping system. Pre-and post-crops in barley+perilla and safflower+perilla showed good growth. Safflower+perilla cropping system was labor-saying and cost down because polyethylene film of pre-crop was reused in post-crop. But when perilla was introduced as post-crop of sesame, delayed seed date resulted in decreased growth and grain yield. The income in barley+perilla and safflower+perilla was greater 4.1fold and 5.2fold, respectively than in perilla mono-crop system. Soil physical properties were improved in order of safflower+perilla, barley+perilla cropping system.

Studies on cropping system for year-round forage crops production

  • Kang, Heonil;Lee, Donghyun;Han, Sangcheol;Choi, Insoo;Yun, Eulsoo;Lee, Jongki
    • Proceedings of the Korean Society of Crop Science Conference
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    • pp.333-333
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    • 2017
  • This study was conducted to establish of cropping system for year-round forage crops production in east-southern part of Korea and investigated their productivity and feed values. Cropping systems were tested in experiment using oat (cv. Highspeed and Darkhorse) in spring and autumn season, corn (cv. Kwangpyeongok) and sorghum (ss-450) in summer season and rye (cv. Gogu) and triticale (cv. Joseong) in winter season. Considering the forage productivity and feed value such as acid detergent fiber (ADF), neutral detergent fiber (NDF) and total digestive nutrients (TDN), this result suggest that three cropping system for year-round forage crops production. The combinations with triticale (winter), corn or sorghum (summer) and oat (autumn) were would be suitable ones. And also the combinations with rye (winter), corn or sorghum (summer) and oat (autumn) were would be suitable. If forage crops cultivation was started in spring season, the combinations with oat (spring), oat (autumn), triticale or rye (winter), corn or sorghum (summer) and oat (autumn) were would be appropriable. For the more suitable cropping system, we are proceeding on verification experiment of year-round forage crops.

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The Comparative Analysis for the Economic Value of the Southern Part Cropping System Introducing New Bio-energy Crops. (영.호남 작부체계의 바이오에너지용 신품종 도입시 경제적 가치 비교분석)

  • Kim, Chung-Sil;Lee, Hyun-Keun
    • Korean Journal of Organic Agriculture
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    • v.17 no.1
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    • pp.1-17
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    • 2009
  • The production of bio-energy crops is a major research project in the emphasizing the "low carbon green growth" strategy. For this, the possibility of the introduction of the new energy crops improve the agricultural income from fanning must be diagnosed. This study describes the level of agricultural income per unit area by cropping system based on the income of crops in the field. Especially, we have chosen the southern part attracting the attention in the possible area of the bio-energy crop production. This study consists of five chapters. Chapter I is the introduction. Chapter II is on the status of the southern part cropping system and the analysis of the economic value. Chapter III is on the economic value analysis introducing new bio-energy crops. Chapter IV is on the comparative analysis for the economic value of the croping system introducing new bio-energy crops. Chapter V is the conclusion.

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Income Analysis on upland cropping system in Southern part (남부권 전작목(田作目)의 작부유형별 소득분석)

  • Kim, Chung-Sil;Lee, Hyun-Keun
    • Current Research on Agriculture and Life Sciences
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    • v.26
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    • pp.1-5
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    • 2008
  • The purpose of this study is to describe some common upland cropping system in Youngnam and Honam region and to analyze it's income by the system. The main results are as follows; First, there are common cropping systems consisting of "sweet potato+barely", "corn+barely" and "bean+barely". Second, the highest earning system in Youngnam region is a "sweet potato+barely" (934,544won/10a) and that in Honam region is a "sweet potato+barely"(1,210,523won/10a) respectively. Third, in the differences of the cropping system's income level between Youngnam and Honam region, the former is higher than the latter in "corn+barely" and "bean+barely" respectively.

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Nitrogen Balance and Biological Nitrogen Fixation of Soybean in Soybean-Barley Cropping System

  • Park Sei Joon;Kim Wook Han;Lee Jae Eun;Kwon Young Up;Shin Jin Chul;Ryu Yong Hwan;Seong Rak Chun
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.50 no.1
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    • pp.1-4
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    • 2005
  • This experiment was conducted to investigate the soil nitrogen credit of biological nitrogen fixation (BNF) and the nitrogen balance of soybean in soybean-barley cropping systems. Soybean cultivar, Shinpaldalkong2 and barley cultivar, Olbori, were used in soybean mono-cropping (SM), barley monocropping (BM), and barley­soybean double cropping system. The barley-soybean double cropping system was treated with two different levels of nitrogen fertilizers, 0 nitrogen fertilizer (BS-F0), and standard nitrogen fertilizer (BS-F1). Nitrogen and organic matter concentrations in soil of BS-F1 plot on October, 2001 were increased $4.8\%\;and\;5.9\%$, respectively, compared with those on October, 2000. The ranges of BNF rate in soybean were $69.1\~ 88.2\%$ in two years, and the rate was the highest in BS-F0 plot and the lowest in SM plot. The ranges of nitrogen harvest index (NHI) in all treatments were $83.9\~86.7\%$. The yield was 270 kg/10a in BS­F1 plot and 215 kg/10a in BS-F0 plot. However, the nitrogen balances were +0.6 kg/10a of gain of soil nitrogen in BS-F0 plot and -0.4 kg/10a of loss of soil nitrogen in BS-F1 plot. In comparisons of SM and BS-F1 plots, although the seed yields were similar in two plots, the loss of soil nitrogen was higher in SM than BS-F1 plot. Overall, our results suggest that barley-soybean double cropping system was more effective in respect to seed productivity and soil nitrogen conservation than soybean monocropping system, and the N credit to following crops by soybean cultivation was identified in soybean double cropping system.

Growth Characteristics of Six Rice Cultivars under Rice-Chinese Milk Vetch (Astragalus sinicus L.) Cropping System (자운영 환원답의 벼 품종간 생육특성과 수량에 관한 연구)

  • Lee, Byung-Jin;Ahn, Jong-Woong;Hwang, Dong-Yong;Oh, Seong-Hwan;Kim, Joon-Hwan;Kim, Sang-Yeol;Ku, Yeon-Chung;Choi, Zhin-Ryong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.spc1
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    • pp.84-91
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    • 2006
  • This study was carried out to comparatively evaluate growth characteristics of rice cultivars under rice-mono (conventional) and rice-Chinese milk vetch (Vetch) cropping system. Six rice cultivars such as Geumobyeo, Pungmibyeo, Hwayeongbyeo, Sobibyeo, Junambyeo and Dongjinbyeo were tested in 2005. The results obtained are summarized as follows ; plant height and culm length of all the tested cultivars at heading and harvest time were shorter in rice-vetch cropping system than conventional, however, nitrogen content of rice plants at heading and harvesting time was higher in rice-vetch cropping system. The total amount of nitrogen of rice plants was higher in conventional than rice-vetch cropping system. Nitrogen content of rice plant and uptake of Pungmibyeo was the highest of all the tested cultivars in both cropping systems. Generally, grain yietd ef tested cultivars seemed to be higher in conventional than rice-vetch cropping system. And it was the highest in Junambyeo as compared to those of other cultivars. Head rice ratio and protein content were higher in rice-vetch cropping system.

Changes of Soil Properties and Temperature by Green Manure under Rice-based Cropping System

  • Jeon, Weon-Tai;Kim, Min-Tae;Seong, Ki-Yeong;Lee, Jong-Ki;Oh, In-Seok;Park, Sung-Tae
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.53 no.4
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    • pp.413-416
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    • 2008
  • The cultivation of green manure crop is considered as a good management practice by increasing soil organic matter and fertility levels. This experiment was conducted to improve the soil environment under rice-based cropping system at paddy soil (fine loamy, mixed, nonacid, mesic, family of Aeric Fluventic Haplaquepts) in National Institute of Crop Science (NICS), Korea in 2006 to 2007. The variation of soil temperature in green manure plots was lower than without green manure (control) during spring season (April to May). The temperature variation of no tillage plot (broadcast before rice harvest) was the lowest among treatments. After green manure cropping, the soil bulk density and porosity ratio were improved at the top soil. The production of green manure was the highest athairy vetch and barley mixture plot by partial tillage. However, mixture treatment had no improvement on soil organic matter. After rice cropping with green manure application, soil quality was improved such as soil physical properties except mixture treatment. Therefore, we suggest that soil quality should be improved by green manure cultivation under rice-based cropping system.