Integrated Pest Management Program, Ohio State University Extension, Urbana, OH 43078, USA.
J Econ Entomol. 2009 Dec;102(6):2255-64. doi: 10.1603/029.102.0630.
The striped cucumber beetle, Acalymma vittatum (F.) (Coleoptera: Chrysomelidae), is a key pest of cucurbit crops throughout its range. A novel precision band applicator was designed to inject a solid stream of imidacloprid solution in-furrow directly over the seed during planting to reduce beetle leaf feeding on pumpkin, zucchini, and cucumber crops. In 2004 and 2005, bioassays at the cotyledon through fifth leaf were conducted on striped cucumber beetles using seedling leaf tissue grown from seeds treated using both continuous and precision banded in-furrow imidacloprid solution applications. In 2004, 80% of bioassay trials had treatments with beetle mortality significantly higher than the check, whereas 70% of the bioassay trials showed no significant difference in mortality between continuous in-furrow and precision banded treatments. In 2005, 79% of bioassay trials had treatments with beetle mortality significantly higher than the check, whereas 100% of the bioassays showed no significant difference in beetle mortality between continuous in-furrow and precision banded treatments at the same insecticide rate. The environmental savings of precision banded treatments compared with continuous in-furrow treatment reduced imidacloprid up to 84.5% on a per hectare basis for all cucurbits tested in 2004 and 2005, translating into an economic savings up to $215/ha. In separate bioassay trials conducted in 2005 on pumpkin, where insecticide band length and injection volume were manipulated independently, several treatments had significantly higher beetle mortality than the check. There was a trend of increased beetle mortality in treatments using shorter band lengths combined with higher insecticide solution volumes.
横纹菜蝽，Acalymma vittatum (F.)（鞘翅目：叶甲科），是其分布范围内葫芦科作物的主要害虫。一种新型的精确带式施药机被设计用来在种植时直接在种子上方的行间注入一条固体的吡虫啉溶液流，以减少菜蝽对南瓜、西葫芦和黄瓜作物的叶片取食。2004 年和 2005 年，使用用连续和精确带式行间施用的吡虫啉溶液处理过的种子生长的幼苗叶片组织，在子叶到第五片真叶阶段对横纹菜蝽进行了生物测定。2004 年，80%的生物测定试验中，处理组的死亡率明显高于对照，而 70%的生物测定试验中，连续带式处理与精确带式处理之间的死亡率没有显著差异。2005 年，79%的生物测定试验中，处理组的死亡率明显高于对照，而在相同的杀虫剂剂量下，100%的生物测定试验中，连续带式处理与精确带式处理之间的死亡率没有显著差异。与连续带式处理相比，精确带式处理的环境节约在 2004 年和 2005 年对所有测试的葫芦科作物，减少了每公顷 84.5%的吡虫啉用量，转化为高达 215 美元/公顷的经济节约。在 2005 年对南瓜进行的单独生物测定试验中，独立操纵了杀虫剂带的长度和注射量，几个处理组的死亡率明显高于对照。使用较短的带长结合较高的杀虫剂溶液体积的处理组，菜蝽死亡率呈上升趋势。
