@article{oai:repository.naro.go.jp:00001593,
 author = {長坂, 幸吉 and NAGASAKA, Koukichi and 高橋, 尚之 and TAKAHASHI, Naoyuki and 岡林, 俊宏 and OKABAYASHI, Toshihiro and ABE, Junichiro and 安部, 順一朗 and ABE, Jun-ichiro and 大矢, 慎吾 and OHYA, Shingo},
 journal = {中央農業総合研究センター研究報告, Bulletin of the National Agricultural Research Center},
 month = {Nov},
 note = {A banker plant system can provide a continuous reservoir of natural enemies in advance of an outbreak of the target pest. In Europe, wheat or barley seedlings (the banker plants) are used to rear aphids that do not target the crop plant. These aphids are in turn used as hosts of the aphid parasitoid Aphidius colemani, which parasitizes the pest aphid well. During 2002 through 2005, we have been developing a similar banker plant system for controlling aphids in greenhouse crops in cooperation with growers in Kochi Prefecture, where is one of the largest regions for the production of greenhouse vegetables (e.g., eggplant and sweet pepper) in Japan. The cotton aphid Aphis gossypii, green peach aphid Myzus persicae, and thrip Thrips palmi are major pest insects of these crops. The minute pirate bug Orius strigicollis has been used in integrated pest management programs to control the thrip. However, insecticides sprayed against the aphids are detrimental to O. strigicollis. In order to protect O. strigicollis, a banker plant system has been developed to reduce the use of insecticides to less than 1/10 of the area of each greenhouse throughout the main harvesting season (February to May). In the initial field trial year, wheat was planted at one location (ca. 0.2 m^2) per 1000 m^2 in December. A month later, ca. 2000 bird cherry-oat aphids, Rhopalosiphum padi, were placed on the wheat, and a few week later ca. 500 adult parasitoids, A. colemani, were introduced. Approximately two months later, the banker plants were replanted and bird cherry-oat aphids were reintroduced. Successful pest aphid control was obtained in about one-third (27 of 76) of the greenhouses. Full chemical insecticide use was required in the remaining greenhouses. We assumed that the banker plant system was unsuccessful in these cases because of (1) the failure or delay of the bird cherry-oat aphids and parasitoids to settle, (2) the occurrence of secondary parasitoids that parasitized the introduced parasitoids, (3) the occurrence of pest aphids (Macrosiphum euphorbiae and Aulacorthum solani) that were not hosts of the introduced parasitoid, and/or (4) an insufficient number of banker plant plantings. During the subsequent growing seasons, the banker plants were introduced one month earlier in at least four locations per 1000 m^2. These trials resulted in successful aphid control in two-thirds of the greenhouses. In 2005, this banker plant system was in use in 226 commercial greenhouses in Kochi Prefecture.},
 pages = {1--50},
 title = {日本の促成栽培施設におけるアブラムシ対策としてのバンカー法の実用化},
 volume = {15},
 year = {2010},
 yomi = {ナガサカ, コウキチ and タカハシ, ナオユキ and オカバヤシ, トシヒロ and アベ, ジュンイチロウ and オオヤ, シンゴ}
}