@article{oai:repository.naro.go.jp:00001618, author = {熊倉, 裕史 and KUMAKURA, Hiroshi and 長坂, 幸吉 and NAGASAKA, Koukichi and 藤原, 隆広 and FUJIWARA, Takahiro and 吉田, 祐子 and YOSHIDA, Yuko}, journal = {近畿中国四国農業研究センター研究報告, BULLETIN of THE NATIONAL AGRICULTURAL RESEARCH CENTER for WESTERN REGION}, month = {Mar}, note = {Effects of a) tunnel-covering of insect-proof screens, b) pre-planting soil solarlization, and c) pesticide applications with reduced levels, on the magnitude of insect damage and crop economic yield of earlywinter cropping chinese cabbage were investigated. Covering with screen of 0.6mm mesh had effects to exclude most of insect pests, however, a restricted number of aphids and Lepidoptera Noctuidae could penetrate through screens, which resulted in major pest problem and in some cases gave severe damage to the crop. The tunnels whose skirt were burried in the ground reduced the penetration of insect pests compared to the tunnels whose skirt were clipped on the ground and so did pre-planting soil solarization. Satisfactory chinese cabbage yield of around 700kg/a were attained in the plot where the skirt of the tunnel were burried combined with solarlization even under condition of only one time pesticide treatment or no pesticide treatment. Clipping the skirt of the tunnel had the advantage of labor-reducing if a grower intends to spray pesticides during growing. This clipping exhibited a considerable but insufficient effect to exclude insect pest, so, solarlization and 2-7 times pesticide treatment must be associated to prevent economic damage of crops.}, pages = {1--14}, title = {初冬どりハクサイでの防虫ネットトンネルと太陽熱処理の併用による虫害抑制}, volume = {4}, year = {2005}, yomi = {クマクラ, ヒロシ and ナガサカ, コウキチ and フジワラ, タカヒロ and ヨシダ, ユウコ} }