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Effect of Agricultural Organic Materials Using Sulfur and Oil on Insect Control in Pepper and Tomato
남춘우,조영상,문희자,안세웅,서태철,전희,Nam, Chun-Woo,Cho, Young-Sang,Moon, Hee-Ja,An, Se-Woong,Seo, Tae-Cheol,Chun, Hee Korean Association of Organic Agriculture 2017 韓國有機農業學會誌 Vol.25 No.4
This experiment was carried out to determine the optimal concentration of agricultural organic materials using sulfur and oil for the insect pest control in pepper and cherry tomato cultivation. The control value of aphids and Oriental tobacco budworm (OTB) was examined one day after spraying with sulfur preparation (SP) (0.33~0.17%), oil preparations (OP) (2.00~0.33%), SP+OP, OP+ginkgo leaf extracts (GLE), SP+OP+GLE on the "Super Manidaa"pepper. The aphid control in pepper was complete by applications of SP+OP (0.25+1.00%) in the early growth stage and the control value was above 98.1% by the application of OP+GLE (1.00+1.00 %), SP+OP+GLE (0.25+1.0+1%), SP+OP+GLE (0.25+1.0+0.5%) in the middle to late growth stage while showing 0% in the control treatment. The OTB was completely controlled by the 3 times application with the high concentration of SP+OP (0.25+1.00%) in pepper cultivation. This result indicates that the oil and the sulfur preparations should be applied at low concentration before insect pests do not appeared, and then sprayed at the high concentration after they appear at pepper plant. The greenhouse whitefly in 'Minichal' tomatoes was completely controlled by three times application of SP (0.25~0.33), OP (1.0~2.00%). and all the treatment of SP+OP. However, continuous control with intervals of 1~3 days was considered favorable in the tomato plant. By the periodical control with agricultural organic materials using sulfur and oil, the greenhouse whitefly, which is a high-temperature insect pest, several moths of OTB did not occur at all. In conclusion, SP+OP (0.17%+0.33%) treatment was the most economical combination to control the aphid, OTB, and greenhouse whitefly in pepper and tomato cultivation when considering operating cost. In addition, we recommend that SP should not be sprayed on the plant shoots during the day time from July to August because of high temperature.
멀칭재료와 GA<sub>3</sub>처리에 따른 유색칼라(Zantedeschia elliottiana cv. 'Black Magic')의 생육 및 개화반응
남춘우,유동림,김수정,서종택,백기엽,이상규,Nam, Chun-Woo,Yoo, Dong-Lim,Kim, Su-Jeong,Suh, Jong-Teak,Paek, Kee-Yoeup,Lee, Sang Gyu 충남대학교 농업과학연구소 2014 농업과학연구 Vol.41 No.4
This experiment had been conducted to determine optimal culture conditions for the growth and cut flowers of Calla (Zantedeschia 'Black Magic' 'Golden Affair') in highlands. Tubers of calla 'Black Magic' was treated with 0, 100, and $200mg{\cdot}L^{-1}$ concentration of $GA_3$. ABA content in tubers and roots were twice higher ($20-25pmol{\cdot}mL^{-1}$) in control than in $GA_3$ treated tubers and roots. ABA contents in tubers was not consistent but ABA contents in roots increased with increasing $GA_3$ concentration. However ABA is in inverse proportion to GA. It was mean that GA of high contents was ABA of low contents. Calla 'Golden Affair' was treated with different mulching materials (Control, black PE, Reflective film, Rice hull) and $GA_3$ concentrations (0, 50, 100 and $200mg{\cdot}L^{-1}$). It was largest in the length of flower at mulching of reflective film, Rice hull and it was greatest in the number of cut flowers at the treated with $200mg{\cdot}L^{-1}$ $GA_3$, Therefore the proper condition was at $200mg{\cdot}L^{-1}$ $GA_3$ with reflective film mulching.
고랭지에서의 근권환경에 따른 유색칼라(Zantedeschia)의 생육반응
남춘우(Chun-Woo Nam),유동림(Dong-Lim Yoo),김수정(Su-Jeong Kim),서종택(Jong-Teak, Suh),백기엽(Kee-Yoeup Paek),이상규(Sang Gyu Lee),윤무경(Moo Kyung Yoon) 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.4
This experiment has been carried out to determine optimal culture conditions for the production of cut flowers and tubers of Calla (Zantedeschia ‘Golden Affair’ and ‘Black Magic’) in highlands. Treatments consisted of various levels of root zone environments, Results are as follows: Calla ‘Golden Affair’ were grown with different mulching materials such as Non-mulching, Black film, reflective film, Rice hull. Mulching materials resulted in no difference in the number of cut flowers but flower length was highest in reflective film. Calla ‘Black Magic’ were treated with various soil water content, soil type and watering time. Number of cut flowers and flower quality were greatest when the plants were watered at -80 ㎪ soil water content. No symptoms of soft rot (Erwinia carotovora) was observed at this soil water content. The occurrence of soft rot was observed with similar percentage according to soil type and the soil water content. When Calla ‘Black Magic’ were watered at the time of soil surface drying, growth was greater compared to others. Air temperature and PPF affected plant growth and photosynthesis. Photosynthetic rate was greatest at 25℃ and PPF 200 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>, while lowest at 28℃ and PPF 800 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>. Soft rot did not occur without regard to dipping treatment (0, 5, 10, 24, 48 hours) when the day and night temperature were maintained at 25℃ and 20℃, respectively.