본시험은 포도 캠벨얼리의 광폭 비가림 설치 효과를 평가하기 위해 실시되었다. 광폭비가림은 비가림의 폭이 기존의 표준 비가림보다 30 cm 넓게 구성되어 있다. 비가림처리는 모두 대기온도보다 2~3oC 높게 나타났고 광 폭비가림하에서 일 평균온도는 0.5~1oC 정도표준 비가림 보다 높게 나타났다. 상대습도는 대기습도보다 15~20% 낮게 나타났으며 연차간 차이를 보였다. Pseudocecospora vitis 에 의해 발생하는 포도 갈색무늬병의 발생은 2012 년에는 광폭비가림이 표준비가림 보다 55.6% 적게 나타 났고 2013년에는 17.2% 적게 나타났다. 포도는 2년에 걸쳐 수확하였고 당함량, 산함량, 과립중, 과립크기 등 과실품질을 측정하였다. 그 결과 2012년에는 처리간 차이가 명확하지 않았으나 2013년에는 광폭비가림이 당함량이 0.4o Bx 높았고 산함량은 0.8% 낮은 결과를 나타내었다. 이는 광폭 비가림의 적용이 갈색무늬병의 발생 정도를 낮추고, 과실품질에 영향을 미치는 것을 시사한다.

Grape cultivar “Campbell Early” account for 70% of table grape in Korea and Leaf Spot Disease caused by Pseudocercospora vitis is one of a major disease in greenhouse and field grown area during late summer season in both of organic and conventional grape farm. Leaf spot disease can cause lowing of sugar content in fruit and vine growth and very difficult to control especially in organic field. Photosynthesis ability and chemical components are compared between leaf spot disease infected leaves with degree of necrotic area. With increase of disease necrotic area, CO2 differential value, water use efficiency and CO2 assimilation and respiration ratio are decreased proportionally and on the other hand, stomatal conductance value is not affected by disease necrotic area. Chlorophyll contents are also decreased by 50% in heavily infected leaves and imply decrease of chlorophyll contents is a major source of photosynthesis ability decline. With increase of disease necrotic area in leaves, total nitrogen and phosphate contents are decreased and on the other side, total carbon, potassium, calcium and magnesium contents are increased. From this research, we can infer that not only chemical control program is important in control of leaf spot disease but also fertilizing program is significant especially in organic agronomical control of fungal disease in grape cultivar “Campbell Early”.

This study was conducted to evaluate the effect of weed control on disease incidence, plant growth and fruit quality, and to provide effective method to farmers at the vineyard. At the raincoat greenhouse cultivating ‘Campbell Early’, several weed controlling methods were compared to the control. Mean temperature of plots between soil covering (C.B., W.F., S.N., P.F. and R.H.) and non soil covering (M.W.2, M.W.3 and U.T.) were similar with 26.2℃ (July) and 25.8℃ (Aug.), but humidity of soil covering was sharply decreased in late-July under 40%. Soil water were all higher in soil covering plots than that of non-soil covering, however, soil temperature was recorded lower in soil covering plots. Disease incidence of Peudocercospora vitis according to soil coverings had effect on black plastic film mulching by decreasing grapevine leaf spot to 85% in July, 69% in August, compared to the control, with showing the smallest lesion incidence in FMB. Among growth characters, internode length and internode width of black plastic film mulching was higher than that of the control. SPAD value of black plastic film mulching was recorded the highest. It was not significant among the treatments, but brix was recorded highly in black plastic film mulching with 14~15°Brix.