Shandong Provincial Key Laboratory for the Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, People's Republic of China.
Shandong Province Institute for the Control of Agrochemicals, Shandong, People's Republic of China.
Pest Manag Sci. 2023 Sep;79(9):3190-3199. doi: 10.1002/ps.7497. Epub 2023 Apr 27.
As a registered non-fumigant nematicide, abamectin has been widely used as a soil treatment against many cash crop nematode diseases. In a previous study, we found that soil adsorption hindered the stable performance of abamectin against root-knot nematodes in the field.
In this study, an efficient and labor-saving application method of soil blending abamectin combined with rotary tillage, a common agronomic measure, was developed to improve the efficacy of abamectin against root-knot nematode disease. We revealed the role of four parameters in this application method. At an abamectin dose of 750 g a.i. ha , spray water volume of 675 L ha and rotation depth of 20 cm, abamectin was well distributed in the 0-20 cm soil layer at a concentration of 0.41-0.46 mg kg , the efficacy against root-knot nematode disease was 72.12%, and the cucumber yield was 51.93 t ha . At the same dosage, root irrigation and flood irrigation measures resulted in only 29.28% and 33.43% control, with cucumber yields of 42.96 and 44.73 t ha , respectively.
To control root-knot nematode disease with abamectin, a soil blending application combined with rotary tilling is superior to leaching application combined with the agronomic measure of irrigation. The former application method can improve the dispersion of abamectin in the soil, enhance the efficacy of abamectin against root-knot nematodes and maintain a stable cucumber yield. In addition, the increased labor required for application combined with agronomic measures is negligible and has excellent application prospects. © 2023 Society of Chemical Industry.
阿维菌素作为一种已注册的非熏蒸性杀线虫剂，已被广泛应用于防治多种经济作物线虫病的土壤处理。在之前的研究中，我们发现土壤吸附会阻碍阿维菌素在田间防治根结线虫的稳定性能。
本研究开发了一种高效省力的土壤混配阿维菌素与旋耕相结合的应用方法，这是一种常见的农业措施，以提高阿维菌素防治根结线虫病的效果。我们揭示了该应用方法中四个参数的作用。在阿维菌素剂量为 750 g ai/ha、喷雾用水量为 675 L/ha 和旋耕深度为 20 cm 的条件下，阿维菌素在 0-20 cm 土壤层中以 0.41-0.46 mg/kg 的浓度均匀分布，对根结线虫病的防治效果为 72.12%，黄瓜产量为 51.93 t/ha。在相同剂量下，根灌和漫灌措施的防治效果仅为 29.28%和 33.43%，黄瓜产量分别为 42.96 和 44.73 t/ha。
为了用阿维菌素防治根结线虫病，土壤混配与旋耕相结合的应用方法优于淋洗与农业灌溉措施相结合的应用方法。前者的应用方法可以提高阿维菌素在土壤中的分散性，增强阿维菌素对根结线虫的防治效果，并保持稳定的黄瓜产量。此外，与农业措施相结合的应用所需增加的劳动力可以忽略不计，具有极好的应用前景。© 2023 英国化学学会。
