• Title, Summary, Keyword: Green manure

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Evaluate a Repeated Oral Dose Toxicity and Immunomodulating Activity of $Pulsatilla$ $koreana$ and $Artemisiae$ $annuae$ in Sprague-Dawley Rats (랫드에서 백두옹과 청호의 경구투여에 의한 반복 투여독성 시험과 면역 활성 평가)

  • An, In-Jung;Kwon, Jung-Ki;Lee, Jin-Seok;Lee, Seung-Ho;Park, Young-Seok;Park, Byung-Kwon;Kim, Sang-Ki;Kim, Byeong-Soo;Cho, Sung-Dae;Choi, Chang-Sun;Lee, Byoung-Hee;Kang, Byeong-Kon;Jung, Ji-Youn
    • Journal of Food Hygiene and Safety
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    • v.27 no.1
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    • pp.96-102
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    • 2012
  • This study was designed to evaluate a repeated oral dose toxicity and immunomodulating activity of $Pulsatilla$ $koreana$ and $Artemisiae$ $annuae$ in Sprague-Dawley rats. The female rats were treated with $Pulsatilla$ $koreana$ and $Artemisiae$ $annuae$ of control group, low group (0.5 ml/kg), medium group (1 ml/kg), high group (2 ml/kg) for distilled water, intragastrically for 4 weeks, respectively. To ensure the safety of $Pulsatilla$ $koreana $ and $Artemisiae$ $annuae$ such as the following were observed and tested. We examined the body weight, the feed intake, the clinical signs, the ophthalmological test, the hematological and the serum biochemical analysis. We also observed the histopathological changes of liver and kidney in rats. Hematological results were the increase of neutrophils, lymphocytes and monocytes in the high dose group of $Pulsatilla$ $koreana$. The increase immune cells in the high dose group of $Pulsatilla$ $koreana$ might immunomodulating activity. No significant differences in body weight, feed intake, serum biochemical analysis and histopathological between control and fed group were found. In conclusion, $Pulsatilla$ $koreana$ and $Artemisiae$ $annuae$ is physiologically safe and improve immunomodulating activity.

Preference of Adult Alfalfa Weevil, Hypera postica (Gyllenhal), (Coleoptera: Curculionidae), to Different Seedlings of Upland Crops (알팔파바구미 성충의 밭작물 유식물에 대한 기주선호성)

  • Bae, Soondo;Kim, Hyunju;Mainali, Bishwo Prasad;Yoon, Youngnam;Lee, Geonhwi
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.371-377
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    • 2013
  • Occurrence of adult alfalfa weevil, Hypera postica Gyllenhal, was observed at Chinese milk vetch field, and host plant preference of its $1^{st}$ generation adult was observed at greenhouse and Chinese milk vetch field. The over-wintered adult of the weevil appeared from late March and peaked in mid April while the $1^{st}$ generation adult appeared from late April and peaked in late May. However, the occurrence of over-wintered adult was very low contrary to the $1^{st}$ generation adult which was very high with some variations among observed years. In greenhouse, host plant preference of $1^{st}$ adult generation of H. postica was evaluated with 11 different seedlings. H. postica was found to occur in significantly higher number on Chinese cabbage seedling followed by soybean, and kale at 7 days after releasing(DAR). Corn, crown daisy and sorghum were found to be the least preferred with nil occurrence of the weevil. Seedlings damage rate by H. postica feeding at 7DAR was the most severe on Chinese cabbage(60.0%) followed by soybean(50.0%), kale(30.0%), foxtail millet(16.7%), proso millet(13.3%) and lettuce(3.3%) significantly. Also, seedlings damage rate by H. postica at 7DAR in Chinese milk vetch field had shown the similar trend with Chinese cabbage(46.7%), soybean(43.3%), kale(23.3%), foxtail millet(13.3%) and proso millet(13.3%) in greenhouse significantly. Accordingly, results on host plant preference of H. postica from this study can be used as a basic information for safe cultivation of upland crops at near or around green manure crop field.

Comparative Environmental Effects of Digestates Application to the Rice Paddy Soil in Bioenergy Village : Field trial (저탄소녹색마을내 혐기소화액 순환이용에 대한 논토양 환경 영향 비교)

  • Hong, Seung-Gil;Shin, JoungDu;Kwon, Soon-Ik;Park, Woo-Kyun;Heo, Jeong-Wook;Bang, Hea-Son;Yoon, Youngman;Kang, Kee-Kyung
    • Journal of the Korea Organic Resources Recycling Association
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    • v.19 no.1
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    • pp.123-130
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    • 2011
  • Objectives of this study were to compare the environmental effects of digestates produced in bioenergy village on the rice paddy field for recycling. Digestates were applied to the soils and the soil properties and the crop responses were analyzed according to the standard methods of soil evaluation. Plant height and the number of tiller showed similar results in both the conventional and digestate treated field, and the yield of rough rice was higher in the field treated with digestates than that with chemical fertilizer. The amounts of nitrogen absorbed in straw and grain were larger in the digestates-treated field than chemical fertilizer-treated one, and efficiency of nitrogen applied was shown to be the highest in 100% treated digestate of the pig manure. Exchangeable cation and pH increased in the soil treated with digestate after harvesting, but salt was not accumulated. With these results, it was concluded that resource recycling in green town can be facilitated through the securement of arable lands for the application of digestates and the proper use of these fertilizers. Long-term effects of digestate application on the soil environment should be sustainingly studied.