This experiment was carried out to investigate the effects of the first harvesting times and regrowth periods after the fist harvest on grass regrowth, dry matter (DM) yield and botanical composition in pasture mixtures during 1987 and 1988. For the test,
To determine optimal plant density of forage rape in southern areas of Korea, Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different plant densities. The results obtained are summarized as f
남부지방에 적합한 사초용유채의 파종적기를 구명코자 다수성 품종으로 선별된 Velox를 공시하여 실험했던 바 그 결과를 요약하면 다음과 같다. 1. 초장, 분기수, 엽수등의 수량구성 형질은 9월중 하순에 파종한 구가 가장 우수하였다. 2. 생초수량과 건물수량도 역시 9월 중하순에 파종한 구가 증수되었다. 3. 조필자질 함량은 파종기가 늦어질수록 높았고 NDF, ADF, cellulose 및 lignin 등의 조직유함량은 파종기가 늦어질수록 저하되었다. 4
This experiment was conducted to investigate the effect of animal stable manure on the dry matter yield, botanical composition, crude protein content rates, in vitro digestibility and soil characters with treatments, which were divided into cattle manure,
In 1985 and 1986, silage productivity of 8 Korean improved and 7 US introduced corn hybrids and their resistance to rice black-streaked dwarf virus (RBSDV) were tested in the southern part of Korea where RBSDV is prevalent. The results obtained are summar
Four foreign pasture cultivars such as Lotus corniculatus cv. Maitland, Trifolium pratense cv. Deben, Lolium perenne cv. S23 and .Dactylis glomerata cv. S26 were tested with "Kwisan" series, a common upland soil in Southern part of Korea. The cu
This experiment was carried out in order to study the effect of fertilizer application and seasonal changes on the productivity of the native reed (Phragmites communis Trinius) on the reclaimed tidal flate in Chonnam province.
모자익 Virus병에 감염된 마늘인편에 열처리, 화학치료제의 효과를 본 시험결과는 다음과 같다. 수중 또는 기중 열처리에 있어서 공히 에서 35일간-1시간의 처리로서는 마늘 Virus의 불활성 화효과가 없었고, 에 분간의 처리로서 마늘엽에 나타난 병징이 감소되기는 하였으나 식물체의 생장력이 매우 약화되었으므로 열처리로서는 마늘 Virus를 완전히 불활성화 시킬 수 없었다. 마늘 인편을 의 Malachite Green, 동농도의 2,4-Dichlorophenoxy Acetic Acid 또는 의 Quinhydrone 수용액에 24시간 침윤처리한 후에 식재생장한 마늘엽에 모자익 병징은 감소되었으나 고농도에서 마늘의 생육이 억제되었다. 의 Naphthyl Activ A챵에 침윤한 마늘 인편을 식재 하였을 때에도 생장한 마늘엽에 모자익 병징이 감소되기는 하였으나 완전히 없어지지는 않았다. 수정한 Murashigh-Skoog 배지에 의 Naphthyl Acetic Acid를 가용하여 마늘의 조직을 배양하였을 때에는 신생한 마늘식생체내에 Virus가 불활성화되어 엽에는 모자익 병징이 나타나지 않았으며 조직세포내에는 봉입체가 형성되지 않고, 정상적인 핵을 가진 건전한 식물체를 얻을 수 있었다.
The aim of this study was to determine the optimum level of carbon dioxide to maximize the quality and yields of strawberries cultivated in a greenhouse. Specifically, two strawberry cultivars, namely, ‘Seolhyang’ and ‘Maehyang’, were subjected to varying concentrations of carbon dioxide and patterns linked to their productivity were noted. Both cultivars showed improvements across various physical variables (i.e., leaf area, crown diameter, plant height, fresh weight, and dry weight) when carbon dioxide concentrations were at 1,500 ppm. The optimum carbon dioxide concentration for increased fruit yields and quality was 1,000 ppm. When carbon dioxide was at 1,000 ppm the yields of ‘Seolhyang’ and ‘Maehyang’ increased by 1.99 and 1.78 times, respectively, compared to control plants. The influence of carbon dioxide on fruit color was negligible. However, the carbon dioxide increased the sugar content and sugar-acid ratio of the experimental fruits compared to control plants. Specifically, the sugar-acid ratio, which is directly related to taste, was at its highest when the concentration of carbon dioxide was at 1,000 ppm (i.e., for both ‘Seolhyang’ and ‘Maehyang’). Overall, the application of carbon dioxide culminated in improved yields and fruit quality for both cultivars of interest.