• 제목/요약/키워드: Cropping system

검색결과 375건 처리시간 0.307초

한국 고랭지 배추 작부체계에 따른 토양, 배추 생산성 및 성분 특성 비교 (Effect of Napa Cabbage (Brassica campestris var. Pekinensis) Cropping Systems on Soil Physiochemical Properties, Yield and Quality in Alpine Area of South Korea)

  • 백계령;이정태
    • 한국자원식물학회지
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    • v.34 no.4
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    • pp.249-256
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    • 2021
  • 김치의 재료로 우리나라에서 중요한 채소인 배추는 호냉성으로 여름에는 서늘한 고랭지역에서 주로 재배된다. 고랭지에서 배추 재배 시 주로 배추를 매년 이어짓기하거나 감자와 번갈아 가면서 재배하고 있는데, 본 연구에서는 두 가지 작부체계 하에서 토양 물리화학성, 배추 생산성 그리고 배추 무기성분의 차이를 분석하고 평가하였다. 결과적으로 토양 내 유기물, 유효인산, 칼륨(K+)은 두 작부체계 모두 6년의 재배 이후 감소하였으며, 토양 pH는 배추 이어짓기 작부에서만 감소하였다. 표토의 공극률 또한 두 작부체계에서 모두 감소하였으나 감자와 돌려짓기 작부에서는 심토의 공극률이 증가하였다. 돌려짓기 작부에서는 배추와 잎의 크기가 유의하게 높아 높은 수량을 얻었다. 식물체 분석 결과 6년의 재배 이후 두 작부체계 모두 배추의 총 질소, Ca2+, Mg2+은 증가하고 총탄소와 인산함량은 감소하였는데, 총질소와 Mg2+은 이어짓기 작부에서 Ca2+은 돌려짓기 작부에서 감소하여 배추 재배 시 작부체계가 토양의 물리화학성과 작물의 생산성에 영향을 줌을 시사하였다.

An adaptable to climatic change and early maturing rice variety 「Gawaji 1」 for double cropping system in Gyeonggi-Do, northern area of South Korea

  • Lee, Ji-Hye;Jang, Jung-Hee;Choi, Byoung-Rourl;Won, Tae-Jin
    • 한국작물학회:학술대회논문집
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    • pp.310-310
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    • 2017
  • 'Gawaji 1', an early maturing and low amylose content rice variety adaptable to double cropping system with barley as later winter crop., was developed by the crop breeding team of Crop Research Division, GARES, Hwaseong, Korea in 2016. 'Gawaji 1' was derived from a cross between 'Baegjinju' and 'Sangmibyeo' in 2004. This variety had heading date of August 4 in Gyeonggi Province. It had a semi-elect plant type and resistance to lodging with strong culm. Its culm length was 67 cm. This variety had 15 tillers per hill and 104 spikelets per panicle. It was medium grain variety showing 1,000 grain weight of brown rice of 19.3g. Its protein contents of milled rice was 8.2% which was lower than 'Baegjinju'. Its milling ratio was 75.5% which was higher than 'Baegjinju'. The yield of milled rice was 5.0 MT/ha under the ordinary culture of the local adaptability test in 3 areas of Gyeonggi Province for three years. 'Gawaji1' is highly adaptable to Gyeonggi Province, especially to northern region of Han River.

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Study on rice double cropping in Southern Korea paddy field

  • Seong, Deok-Gyeong;Kim, Young-Gwang;Nam, Jin-Woo;Choi, Yong-Jo;Hong, Kwang-Pyo
    • 한국작물학회:학술대회논문집
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    • pp.320-320
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    • 2017
  • Recently, the rice growing time was extended by the global warming. This study was conducted to investigate the possibility of rice double cropping system in southern Korea. The first transplanting was with six cultivars ('Kilala397', 'Baekilmi', 'Joun', 'Hanseol' and 'Jungmo1031') on April 15. All cultivars could be harvested at the end of July. Adaptable cultivars for the first cultivation were 'Kilala397', Baekilmi' and 'Joun'. The rice yields at the first cultivation was about 95% of local average yield. Although the yield was slightly less, the first cultivation was considered to have economic benefits, because of the high market price of rice. In the second transplanting was with five cultivars ('Manjong', 'Joun', 'Deabo', 'Jinok' and 'Kilala397') on April 15. All cultivars could be harvested in early November. Adaptable cultivars for the second cultivation were 'Jinok' and 'Kilala397'. The rice yields at the second cultivation was about below the 60% of local average yield, because there was the less growth than normal season cultivation. Consequently, southern Korea' annual rice double cropping system is considered to have no economic value yet. However, the research should be continued considering the temperature rise of global warming.

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Selection of Plant Growth-Promoting Pseudomonas spp. That Enhanced Productivity of Soybean-Wheat Cropping System in Central India

  • Sharma, Sushil K.;Johri, Bhavdish Narayan;Ramesh, Aketi;Joshi, Om Prakash;Sai Prasad, S.V.
    • Journal of Microbiology and Biotechnology
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    • v.21 no.11
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    • pp.1127-1142
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    • 2011
  • The aim of this investigation was to select effective Pseudomonas sp. strains that can enhance the productivity of soybean-wheat cropping systems in Vertisols of Central India. Out of 13 strains of Pseudomonas species tested in vitro, only five strains displayed plant growth-promoting (PGP) properties. All the strains significantly increased soil enzyme activities, except acid phosphatase, total system productivity, and nutrient uptake in field evaluation; soil nutrient status was not significantly influenced. Available data indicated that six strains were better than the others. Principal component analysis (PCA) coupled cluster analysis of yield and nutrient data separated these strains into five distinct clusters with only two effective strains, GRP3 and HHRE81 in cluster IV. In spite of single cluster formation by strains GRP3 and HHRE81, they were diverse owing to greater intracluster distance (4.42) between each other. These results suggest that the GRP3 and HHRE81 strains may be used to increase the productivity efficiency of soybean-wheat cropping systems in Vertisols of Central India. Moreover, the PCA coupled cluster analysis tool may help in the selection of other such strains.