간행물
한국유기농업학회지 KCI 등재 Korea Journal of Organic Agriculture
- 발행기관 한국유기농업학회
- 자료유형 학술지
- 간기 계간
- ISSN 1229-3571 (Print)2287-819X (Online)
- 수록기간 1992 ~ 2020
- 주제분류 농수해양 > 농학 농수해양 분류의 다른 간행물
- 십진분류KDC 523DDC 630
권호리스트/논문검색
Vol.19 No.특별호 (2011년 12월) 73건
61.
2011.12
서비스 종료(열람 제한)
Four seed vetch (Vicia tetrasperma), a biennial native leguminous plant, was used for a cover crop with different quantity of sowed seeds. Weed suppression and yield were evaluated for the red pepper cultivation in the following year of the vetch seeding. Seeding of 1.0, 2.0, 3.0, 4.5, and 6.0 kg 10 a suppressed weed occurrences until late in the growing season of the red pepper. Consequently, red pepper in the cover cropping system with seeding of 3.0, 4.5, and 6.0 kg 10 a- I had a similar yield to the conventional red pepper. The ideal seed rate in four seed vetch was 3.0 and 4.5 kg 10 a ’ in terms of reducing weed occurrence as well as increasing growth and yield in red pepper.
62.
2011.12
서비스 종료(열람 제한)
Sung-Jun Hong, Yong-Ki Kim, Hyeong-Jin Jee, Jong-Ho Park, Eun-Jung Han, Nan-Hee An, Jung-Hyun Kim, Hyung-Jin Goo
Botrytis cinerea infects stems and leaves of greenhouse tomatoes and can cause serious economic losses. This study was conducted to develop environment-friendly control method against tomato gray mold. Antagonistic microorganisms (bacteria) were screened for control activity against Botrytis cinerea, both in vitro and in vivo, using stem sections. One hundred bacterial strains were isolated from the rhizospheric soil of various plants including tomato. These strains were screened for growth inhibition of Botrytis cinerea on agar plate by the dual culture and thirty strains showing strongly inhibitory effect against the pathogen were selected first. Among thirty strains, JB 5-12, JB 22-2, JB 22-3, U 4-8 and U46-6 reduced significantly disease incidence, when applied simultaneously with the pathogen. These results suggested that five antagonistic bacteria strains selected have the potential to control tomato gray mold in organic farming.
63.
2011.12
서비스 종료(열람 제한)
When kiwifruit root system infected with nematodes was treated by hot water dipping treatment, the maximum temperature for this treatment was suggested as 50℃. The lowest killing temperature of internal root-knot in the root tissue was 48℃. Consequently, root-knot nematodes could be killed without damaging root tissues by the hot water dipping treatment at 48℃ for 10 minutes. This could be useful for organic production and distribution of kiwifruit seedlings by avoiding the synthetic nematicides which are not easily decomposed in soil once applied.
64.
2011.12
서비스 종료(열람 제한)
In organic Chinese cabbage fields, Commercial Bacillus thuringiensis products are used widely against diamond back moth, Plutella xylostella. We conducted the study to determine the effective spray-interval of commercialized B. thuringiensis against diamond back moth on Chinese cabbages. Chinese cabbage leaves were collected 0, 1, 2, 3, 6, 10days after treatment in first trial and 0, 2, 4, 7, 9, 11days after treatment. We compared the insecticidal property of sprayed B. thuringiensis and the density of it on surface of Chinese cabbages using collected leaves. The insecticidal property maintained high until nine days after commercial B. thuringiensis products sprayed.
65.
2011.12
서비스 종료(열람 제한)
Ko, S. J., Kang, B. R., Kim, D. I., Choi, D. S, Kim, S. G., Kim, H. K., Kim, H. J., Choi , K. J., Kim, Y. C
Crop protection strategies in organic horticulture aim to prevent insect pest and plant disease problems through utilization of non-chemical based control means. In order to develop a model for management of plant diseases and insects in organic cucumber cultivation, we compared efficacies between chemical pesticide spraying system and biological control means in semi-forcing and retarding cucumber cultivation during 2005 and 2006. Conventional chemical spray program using various chemical pesticides was applied 5 - 10 days intervals, while two different non-chemical pesticide application programs using two formulated biopesticides Topseed™ and Q-fect™， Suncho™, and Sangsungje™(biocontrol agents 1) and using egg-yolk and cooking oil(EYCO)， Bordeaux mixture, Suncho™, and ‘Sangsungje™(biocontrol agents 2) were applied 5 - 7 days intervals during entire cucumber cultivation period. Efficacy of both biocontrol agents programs was effective to comparable to conventional chemical pesitice spray program to control plant diseases such as powdery mildew and downy mildew as well as insect pests such as aphids and thrips which are known as major threats in cucumber organic cultivation. In this study, we established and evaluated an effective and economic crop protection strategy using various biological resources can be used to control plant diseases and pests simultaneously in organic cucumber cultivation field.
66.
2011.12
서비스 종료(열람 제한)
Root-knot nematodes cause a significant damage on fruit yield and quality of green house growing crops. To asses the effect of eggplant rootstock, Torvum vigor’, ‘TaibyouVF’ and ‘Daitaro’ were grafted on eggplants(Solanum melongena CV. Chookyang) and planted in root-knot nematode infested microplot in green house and compared their fruit yield, quality and plant growth with non-grafted control. Eggplant grafted with Torvum vigor had the highest fruit yield and top growth and followed by Daitaro. Non-grafted eggplant had lower yield but had higher root weight because of heavy root-knot nematode infection. Rootstock grafting in eggplant farming is a good alternative technique in root-knot nematode infested green houses without compromising fruit yield and can be applied instantly as organic farming practice.
67.
2011.12
서비스 종료(열람 제한)
Pepper mild mosaic virus (PMMoV) and cucumber mosaic virus (CMV) are important pathogens in various vegetable crops worldwide. We have found that methanol extracts of Quercus dentate (Daimyo Oak) gallnut strongly inhibit PMMoV and CMV infection. Based on this result, the inhibitor named as "KN0912" formulated from the extract of Q. dentate gallnut was tested for its inhibitory effects on PMMoV or CMV infection to each local lesion host plant (Nicotiana glutinosa; PMMoV, Chenopodium amaranticolor; CMV). Pre-treatment effect of KN0912 against infections of each virus to local host plant was measured to be 75. 1:±0. 5-97. 5±1. 5% to PMMoV and 70.6±2.2-99.0±1.0% to CMV in 1-10mg/ml conc. and the absorption effect of the antiviral composition of KN0912 to the inside of tobacco leaves tissue, was inhibited by 55.7% to PMMoV and 63.8% to CMV. The persistence of KN0912 treatment was maintained until after the 3 days high inhibitory effect by 98% to PMMoV and by 95.1% to CMV. Inhibitory effects on systemic host plants of KN0912 were measured to be 80-90% to PMMoV and 60-75% to CMV. From the change of morphological characteristics of PMMoV particles under EM, we are tentatively suggested that one mode of action of KN0912 is inactivation due to the destruction of virus particles.
68.
2011.12
서비스 종료(열람 제한)
To find an alternative for synthetic pesticides, methanol extracts from 69 plant samples were tested for their insecticidal activity against two spotted mite (Tetranchus urticae Koch). Seven plant extracts including Angelica japonica showed over 80% insecticidal activity at 5000 mg/L. Extract of Prunus armeniaca seed showed high insecticidal activity at 3000 mg/L. As a naturally occurring pesticide, P. armeniaca could be useful as a new botanic insecticide.
69.
2011.12
서비스 종료(열람 제한)
This study was carried out to development the environment-friendly control method of Myzus persicae using Beauveria bassiana and Environment-friendly agricultural materials (EFAM).
Germination rate the dried conidia of B. bassiana was 90 percent at 24-27 ˚C temperature condition. Mortalíty of M. persícae was 56. 7% at 1 X1 07 cfu/ml conidia concentration. Four EFAM such as Pachungtan, Wangjungwang, Newbiodakill, Muginchon were low toxicity to B. bassiana growth. Among them, Muginchon (derris extract) and Wangjungwang (neem extract) could have synergistic effect to aphid mortality when mixing treat with B. bassiana, which protection value was 99% in 3 days after treat.
70.
2011.12
서비스 종료(열람 제한)
Yong-Ki Kim, Sung-Jun Hong, Hyeong-Jin Jee, Jong-Ho Park, Eun-Jung Han, Nan-Hee An, Eun-Jung Choi, Kyoung-yul， Ryu
Powdery mildew and leaf mold were major diseases in organic cultured tomatoes. NaHC03 and KH2P04 were selected as control agents for controlling tomato powdery mildew. Control effect of the selected control agents was increased when they were tréated with oil-egg yolk mixtures (OEYO). Also four organic materials used commercially including copper hydroxide and sulfur showed high control effect more than 90% in green house. Also two organic matters, copper hydroxide and sulfur showed high control effect in farmer's field. When tomatoes were cultivated in plastic house installed wìth circulation fan, incidence of powdery mildew and leaf mold was reduced by 56% and 60%, respectively.
71.
2011.12
서비스 종료(열람 제한)
Environment friendly agricultural material products (EFAMs) in current market were evaluated for their insecticidal or acaricidal activities. EFAMs were evaluated against Tetranychus urticae, Plutella xylostella, Myzus persicae and Nilaparvata lugens in spray method. Several EFAMs indicated high control value in spray method. Hatchability of T. urticae was relatively high after EFAM treatment. some materials show high insecticidal activities against P. xylostella larvae but not against eggs. Few meterials showed more than 80% insecticidal activities against M. persicae and N. lugen. The control value of more than half the materials for pest control was lower than 60%. EFAMs containing S. flavescens, neem oil and Rape showed higher control value
72.
2011.12
서비스 종료(열람 제한)
We studies a model for management of pepper anthracnose based covering method and spraying system in field.
1. Among 82 organic fungicides, 42 materials showed most effective inhibition against mycelia growth of the Colletotrichum acutatum in vitro. 23 formulated biocontrol agents were chosen to control the disease from 42 biocontrol agents in greenhouse. In the end, five kinds (2 plant extracts, 2 biopesiticides, 1 Bordeaux mixture) were selected from 23 materials in the field.
2. The mulching materials of bed covering in fruit season were thin non-woven fabric sheet and black plastic. The use of a fabric sheet was reduced the spread of anthracnose as compared to the plastic covering.
3. The application with the chosen materials was reduced 34% of anthracnose for 7 times sprays to planting 70 days as compared to the untreated control. In yield, nonwoven fabric sheet with formulated biopesticides was increased 17% than black plastic.
4. This result indicated that the developed biocontrol strategy could be an effective and economic crop protection system in organic pepper cultivation field.
73.
2011.12
서비스 종료(열람 제한)
Weed control ís the most ímportant íssue ín organíc farmíng systems that límít crop growth and theír yíeld. Fíeld experíments were conducted ín organíc soybean (Glycine max Merrí/l) to evaluate the weed suppressíon effects of salt and seawater treatment. Weed populatíon and fresh weíght were monítored after 6 weeks of saft and seawater treatments. The most ímportant weeds were Dígítaría sanguínalís, Portulaca oleracea, Tradescantía reflexa and Chenopodíum album var. centrorubrum, but also 6 other specíes were observed ín soybean arable fíeld. Soybean crops under seawater or theír solíds applicatíon were well grown. The results treated wíth salts and seawater índícate decreases by 13.4-30.8% ín weed densíty and by 18.0-43.2% ín theír fresh weíght and soíl hardness íncreases of up to 2.1-fold. Salt and seawater províded good addítíonal weed control, but they were caused a seríous problem ín deteríoratíon of soíl physícal propertíes.
