食虫线虫对年生蛴螬的生物防治,1992

F. P. Baxendale, A. P. Weinhold, R. Gaussoin
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引用次数: 0

摘要

这项研究是在林肯进行的,在一个多年生黑麦草高尔夫球场球道。草皮(99%为多年生黑麦)保持割高1.6 cm,样区茅草堆积量(指压)0.64 ~ 1.3 cm。施用时的现场条件为:空气温度20℃;土壤温度(10cm深度),23.9℃;土壤类型:粉质粘壤土;土壤有机质,3-5%;土壤pH 6.0 ~ 7.0;水pH, 7.0;土壤湿度,18%。地块面积为3.05 × 3.05 m,试验设计为RCB,设4个重复。8月12日使用CO2喷雾器,使用LF-4喷嘴,压力为165.5 KPa,喷雾量为18.9升/93 m2。在施用前用0.64厘米的水灌溉试验区,并在处理期间定期注射器。施用后,立即用约1.3厘米的水灌溉地块。9月2日,通过从每个样地取出9个直径20.3 cm的草皮-土壤岩心(总面积0.3 m2)至7.6 cm深,并计数存活蛴螬数量,对21个处理进行评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biological Control of Annual White Grubs with Entomophagous Nematodes, 1992
This study was conducted in Lincoln, NE on a perennial ryegrass golf course fairway. The turf (99% perennial rye) was maintained at a mowing height of 1.6 cm and thatch accumulation (finger compressed) in the plot area was 0.64 to 1.3 cm. Field conditions at the time of application were: air temperature, 20°C; soil temperature (10-cm depth), 23.9°C; soil type, silty clay loam; soil organic matter, 3-5%; soil pH, 6.0 to 7.0; water pH, 7.0; soil moisture, 18%. Plots were 3.05 x 3.05 m and the experimental design was a RCB with 4 replications. Insecticides were applied 12 Aug. Treatments were applied with a CO2 sprayer using a LF-4 nozzle at 165.5 KPa and delivering 18.9 liter spray/93 m2. The test area was irrigated prior to applications with 0.64 cm of water and periodically syringed during treatment. Immediately following applications, plots were irrigated with approximately 1.3 cm of water. Treatments were evaluated 21 DAT on 2 Sep by removing from each plot nine, 20.3 cm diam turf-soil cores (0.3 m2 total area) to a depth of 7.6 cm and counting the number of surviving grubs.
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