- 期刊
- OpenAccess
Efficacy of Eco-Friendly Products Against Spodoptera litura (Fab) (Lepidoptera: Noctuidae) in Cabbage: A Field Trial in Nepal
環保產品對尼泊爾高麗菜的斜紋夜盜蟲Spodoptera litura (Fab)防治功效
摘要
The tobacco caterpillar (Spodoptera litura) is one of the most economically devastating insect pests in Nepal, where it preys on cabbage and other crops. This study evaluated the efficacy of two entomopathogens (Beauveria bassiana and Bacilus thuringiensis), two plant-based commercial products (Karanjin and Azadirachtin), chinaberry leaf extract, and Jholmal (mixture of fermented animal urine and herbs) against S. litura in cabbage under field conditions in Chitwan, Nepal, and compared the efficacy with that of a commercial toxic product ＂All Killer＂ (Cypermethrin 10%). Karanjin and Jholmal were found to be significantly more effective against S. litura larvae than the entomopathogen-based products and chinaberry leaf extract; fewer cabbage heads were damaged by S. litura when Karanjin, Jholmal, and All Killer were applied. Cabbage yields in plots treated with Karanjin, Jholmal, and All Killer were similar and were significantly higher than those in plots treated with other tested items. This study reveals that Karanjin and Jholmal are effective eco-friendly alternatives to All Killer in controlling S. litura on cabbage in the field.
並列摘要
在尼泊爾(Nepal)，斜紋夜盜蟲(Spodoptera litura)是危害高麗菜和其多種農作物最嚴重的雜食性害蟲。本研究主要在尼泊爾奇旺(Chitwan)地區的高麗菜田進行試驗，評估了兩種蟲生病原體，白僵菌(Beauveria bassiana)和蘇力菌(Bacilus thuringiensis)、兩種植物為主的商業產品(Karanjin和Azadirachtin)、苦楝樹葉萃取物及Jholmal(發酵的動物尿液和草藥混合物)等針對斜紋夜盜蟲的防治功效，並和商業農藥產品＂All Killer＂(Cypermethrin 10%)做比較。結果發現Karanjin和Jholmal對斜紋夜盜蟲幼蟲的防治效能明顯優於蟲生病原體與植物和苦楝樹葉萃取物。使用Karanjin、Jholmal和All Killer時，高麗菜被斜紋夜盜蟲損害的數量有減少，且三者間產量相似，均明顯地高於其他測試項目。這項研究顯示，Karanjin和Jholmal是更有效的環保替代產品，可以控制高麗菜田的斜紋夜盜蟲。