Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy.
Department of Agronomy, Food, Natural Resources, Animals, Environment (DAFNAE), University of Padova, Legnaro, Padova, Italy.
J Econ Entomol. 2019 May 22;112(3):1292-1298. doi: 10.1093/jee/toy431.
The effects of kaolin and bunch-zone leaf removal on populations of predatory mites Kampimodromus aberrans (Oudemans) and Typhlodromus pyri Scheuten were assessed in the context of four trials (2015-2016) carried out against Lobesia botrana (Denis and Schiffermüller) (Lepidoptera: Tortricidae) in vineyards located in north-eastern Italy. Laboratory experiments were performed to evaluate the effects of kaolin on the survival and fecundity of K. aberrans and T. pyri populations originating from the same grape-growing area. In field trials, kaolin caused a gradual decrease in population density levels of both phytoseiid species (with the maximum reduction ranging from 49 to 91%) with a complete population recovery in the next spring. In laboratory experiments, kaolin was moderately harmful to both species, reducing their fecundity significantly (around 60%). Bunch-zone leaf removal determined lower phytoseiid populations in all trials, but this effect was significant only for K. aberrans in one of them. A limited use of kaolin and the adoption of bunch-zone leaf removal did not irreversibly affect phytoseiid populations in vineyards and thus can be considered compatible with IPM strategies.
在意大利东北部的四个试验中（2015-2016 年），评估了高岭土和束叶区去除对捕食性螨类 Kampimodromus aberrans（Oudemans）和 Typhlodromus pyri Scheuten 的种群的影响，以防治葡萄果蠹蛾 Lobesia botrana（Denis and Schiffermüller）（鳞翅目：卷蛾科）。进行了实验室实验，以评估高岭土对来自同一葡萄种植区的 K. aberrans 和 T. pyri 种群的生存和繁殖力的影响。在田间试验中，高岭土导致两种捕食螨物种的种群密度水平逐渐下降（最大减少幅度从 49%到 91%），次年春天种群完全恢复。在实验室实验中，高岭土对两种物种都有中度危害，显著降低了它们的繁殖力（约 60%）。束叶区去除在所有试验中均导致较低的捕食螨种群，但在其中一次试验中仅对 K. aberrans 有显著影响。高岭土的有限使用和束叶区去除的采用并没有不可逆转地影响葡萄园中的捕食螨种群，因此可以被认为与 IPM 策略兼容。
