• 제목/요약/키워드: Crop Cultivation

검색결과 2,224건 처리시간 0.025초

경사밭 감자(Solanum tuberosum L.) 재배 시 휴한기 호밀(Secale cereal L.) 재배에 따른 토양 특성 및 토양 보전 효과 (Cover Crop Effects of Winter Rye (Secale cereale L.) on Soil Characteristics and Conservation in Potato (Solanum tuberosum L.) Slope Field)

  • 백계령;이정태
    • 한국환경과학회지
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    • 제30권12호
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    • pp.1015-1025
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    • 2021

  • Our research work aimed to evaluate cover crop effects of winter rye on soil characteristics, soil conservation, and yield productivities on potato fields with 15% slope during a fallowed period. There were two controls of bared field without any cultivation and conventional potato cultivation without winter rye. Potato cultivation increased soil pH, organic matter, available phosphate, and exchangeable cation regardless of cover crop cultivation. Sub-soil, particularly, all components of soil chemical properties showed higher value in winter rye cultivation than conventional cultivation. Higher soil density was observed on cover crop cultivation than conventional cultivation resulting from root residues of the cover crop both topsoil and subsoil. Cover crop residues positively affected plant growth and reduced the amount of soil erosion by holding the soil. Although severe soil erosion was seen in conventional cultivation, winter rye cultivation declined soil erosion by 47% during the fallow period on potato slope fields. Distinct soil bacterial communities were detected among treatments and some OTU(Operational Taxonomic Unit)s showed significantly higher abundance in winter rye treatment. Total yield and commercial rate demonstrated no significant differences while higher tuber phosphate, K+, and Mg2+ contents were observed in winter rye cultivation.

  • https://doi.org/10.5322/JESI.2021.30.12.1015 인용 PDF KSCI

Outbreak of Rice Blast Disease at Yeoju of Korea in 2020

  • Chung, Hyunjung;Jeong, Da Gyeong;Lee, Ji-Hyun;Kang, In Jeong;Shim, Hyeong-Kwon;An, Chi Jung;Kim, Joo Yeon;Yang, Jung-Wook
    • The Plant Pathology Journal
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    • 제38권1호
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    • pp.46-51
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    • 2022

  • Rice blast is the most destructive disease threatening stable rice production in rice-growing areas. Cultivation of disease-resistant rice cultivars is the most effective way to control rice blast disease. However, the rice blast resistance is easy to breakdown within years by blast fungus that continually changes to adapt to new cultivars. Therefore, it is important to continuously monitor the incidence of rice blast disease and race differentiation of rice blast fungus in fields. In 2020, a severe rice blast disease occurred nationwide in Korea. We evaluated the incidence of rice blast disease in Yeoju and compared the weather conditions at the periods of rice blast disease in 2019 and 2020. We investigated the races and avirulence genes of rice blast isolates in Yeoju to identify race diversity and genetic characteristics of the isolates. This study will provide empirical support for rice blast control and the breeding of blast-resistant rice cultivars.

  • https://doi.org/10.5423/PPJ.NT.08.2021.0130 인용 PDF KSCI