A simple method to survey a ratio of barley or wheat seeds infested by Pseudomonas syringae pv. syringae (Pss). Barley or wheat seeds were put in multi-well plate and immersed in 200 μl sterile water at 8°C for 3 days. A small aliquot of the seed immersed water was transferred on selective medium to detect Pss using 48-pin copy plate, and incubated at 25°C for 7 days. Black colonies of Pss were clearly detected without contamination of filamentous fungi. This is a simple and easy method to examine many seeds at a time, and it is expected to detect infested seeds more precisely.

The prevention of sweetpotato whitefly, Bemisia tabaci (Gennnadius) by combined application an entomopathogenic fungi, Paecilomyces tenuipes pesticide and physical control pesticides was examined under laboratory and greenhouse conditions. In the laboratory, the control effects by the combined application that two pesticides were mixed with under the half concentration of standard usage were higher than single pesticide treatment with standard concentration. Moreover, this effect was confirmed under low relative humidity, 40RH. Improvement of the control effect was confirmed under the greenhouse condition.

アザミウマ類は多くの農作物に被害を及ぼす害虫である。多くの種が各種薬剤に対して抵抗性を発達させており，防除対策として天敵などの防除資材が検討されている。メタリジウム粒剤はアザミウマ類に対する昆虫病原性糸状菌製剤である。ほ場では様々な病害虫に対する薬剤散布が前提となるため，それらの薬剤がメタリジウム菌に及ぼす影響を菌叢伸長により評価した。その結果，殺菌剤ではトリフルミゾールとベノミル，殺虫剤ではMEP の悪影響が大きかった。メタリジウム粒剤使用時には，これらの薬剤の使用を控えることが望ましいと考えられる。

Box-tree pyralid, Glyphodes perspectalis(Walker), is one of the serious lepidopterous insect pests of box trees. In late April 2014, this insect pest occurred and heavily injured the box trees in our center, which is located at Toyohashi city in Aichi Prefecture. Therefore, the susceptibility of G. perspectalis to 18 insecticides was evaluated by the leaf-dipping method. Of the 18 insecticides tested, 14 gave 100% mortality at their respective commercially used concentrations. In particular, fipronil, spinosad, and spinetoram exhibited very high insecticidal activity. In addition, PAP, thiodicarb, flubendiamide, metaflumizone, and pyridalyl exhibited high insecticidal activity. Comparison of the insecticidal susceptibility of G. perspectalis with that of the common cutworm, Spodoptera litura (Fabricius), showed that G. perspectalis was more susceptible than S. litura except against lufenuron. These results indicate that G. perspectalis can be easily controlled by using insecticides effective against S. litura.

The nematicide imicyafos applied to Malabar spinach (Basella alba) showed high control effect on the root-knot nematode. The agrochemical residues in the Malabar spinach were 0.04 ppm at the stems and leaves and 0.10 ppm at the broad leaves after 30 days of soil-mixing treatment; later, the imicyafos residues gradually decreased. Here we discuss the application for the registration of imicyafos for use in Malabar spinach.

三重県南伊勢町のかんきつ園において黄色LED 照明による果実吸蛾類の被害抑制効果の実証試験を行った。試験は2011年と2012年に実施し，2011年には 0.6 W の黄色LED 光源を19個，2012年には 4.3 W の黄色LED 光源を５個設置して試験区内を照明した。その結果，2011年，2012年ともに黄色LED 照明により最大照度 1 lux 以上の照度が確保できた樹では，果実吸蛾類による被害果の発生を抑制できた。それぞれの光源の年間コストと電気料金の合計は同程度であったが，栽培管理作業の障害になりにくい点から，設置数が少なくて済む 4.3 W 黄色LED 光の方が有効と考えられた。

We shortened the cultivation period of spinach in the field by transplanting rather than direct-seeded cultivation; the damage done by Tyrophagus similis Volgin on spinach was reduced.

天敵比率（チリカブリダニ雌成虫数／ナミハダニ雌成虫数）が0.1近傍を超えるとチリカブリダニがナミハダニを短期間で密度抑制できることが示された。放飼したチリカブリダニが定着・繁殖を開始した後に選択性殺ダニ剤プロピレングリコールモノ脂肪酸エステル乳剤を散布することによって急速に天敵比率を増加させることが，短期間にナミハダニ低密度抑制を達成し維持することに効果があることが示された。一方，チリカブリダニ単用の場合，チリカブリダニ２回放飼であってもチリカブリダニの増殖だけでは天敵比率を急速に高めることは難しいことが示された。ナミハダニ雌成虫とチリカブリダニ雌成虫の空間分布はコロニーを形成し集中分布する傾向がみられた。両種の空間分布の重なりについて，株あたり天敵比率と両種の株あたり個体数の相関関係に注目して検討した。処理区あたり天敵比率の平均値は0.1以上であっても，天敵比率が0.1未満の株が存在しており，時間の経過とともに0.1未満の株数が減少する傾向がみられた。このことは，チリカブリダニの放飼初期段階ではハダニ密度に比例してチリカブリダニが存在するのではなく，ハダニコロニーを捕食しながら移動分散する過程で天敵比率の低い株が減少すると考えられた。

In 2011, we used yellow sticky traps to investigate seasonal changes in adults of the exotic pest Aleurocanthus camelliae Kanmiya and Kasai in tea fields where the pest was first discovered in Shizuoka Prefecture, Japan. The pest was discovered for the first time in the Kikugawa region in October 2010, and subsequently in the Iwata region in November 2010. From April to November 2011, monitoring traps were set in three fields in Kikugawa and two fields of Iwata. In all the fields investigated, captures of adults showed the following four peaks: the beginning of May, the middle of July, the beginning of September, and the middle or end of October. In each area, the first and second peak days were the same in each field, although the third and fourth peak days varied among fields within the same area. Pruning after the first plucking of tea suppressed the occurrence of the pest during the following 2 or 3 months.