Cotton is a major fibre crop grown in South Africa; and is subjected to pest attacks, which reduce its yield and profitability for farmers. Field trials were conducted in 2017 and 2018 to evaluate three biopesticides, namely, Eco-Bb®, Bb endophyte, and Metarhizium rileyi in comparison with the insecticides Chlorpyrifos® 480 EC, Karate® EC, and Bandit® 350 SC. The objective was to determine their efficacy against sucking pests, leafhoppers Jacobiella facialis, aphids Aphis gossypii, thrips Thrips tabaci, whiteflies Bemisia tabaci, red spider mite Tetranychus urticae, and cotton stainers Dysdercus spp. Karate® significantly reduced the leafhopper population and outperformed all the other treatments. Eco-Bb® and Bb endophyte did not control the aphids in 2017. However, in 2018 the best aphid control resulted from the biopesticides used. In 2017 plots treated with Eco-Bb® had the lowest number of thrips, while in 2018 plots treated with Bandit® had the least thrips, followed by treatments with M. rileyi and Karate®. There were no significant differences in the populations of whiteflies, however, insecticides were more effective than the biopesticides. All the treatments, except for Bandit®, significantly reduced the number of spider mites compared in 2017.

Applications of Eco-Bb® and Bb endophyte significantly reduced spider mites in 2017, while in 2018 plots treated with Karate®, followed by M. rileyi, resulted in the lowest number of spider mites. Application of Bb endophyte, Chlorpyrifos®, and Karate® resulted in the lowest number of cotton stainers. The highest mean cottonseed yields of 6395 kg ha⁻¹, 6295 kg ha^−1, and 6141 kg ha⁻¹ were recorded in plots sprayed with Bandit®, Bb endophyte, and Eco-Bb®, respectively. Biopesticides and chemical insecticides can be combined or alternated for future IPM programmes to control cotton pests.

棉花是南非主要的纤维作物。并受到害虫的袭击，这降低了农民的产量和利润。与杀虫剂Chlorpyrifos®480 EC，Karate®EC和Bandit®350 SC相比，2017年和2018年进行了田间试验以评估三种生物农药，即Eco-Bb®，Bb内生植物和rileyi菌。目的是确定它们对吮吸害虫，叶蝉Jacobiella faceis，蚜虫Aphis gossypii，蓟马蓟马，粉虱Bemisia tabaci，红蜘蛛螨Tetranychus urticae和棉花染色剂Dysdercus的功效。spp。Karate®大大减少了叶蝉的数量，并且胜过所有其他处理。2017年，Eco-Bb®和Bb内生菌未控制蚜虫。但是，在2018年，最佳的蚜虫防治归因于所使用的生物农药。在2017年，用Eco-Bb®处理的地块蓟马数量最少，而在2018年用Bandit®处理的地块蓟马最少，其次是rileyi和Karate®处理。粉虱种群没有显着差异，但是，杀虫剂比生物农药更有效。与Bandit®相比，除2017年外，所有处理均显着减少了红蜘蛛的数量。

2017年，Eco-Bb®和Bb内生菌的施用显着减少了蜘蛛螨，而在2018年用Karate®处理的地块，随后是rileyi M.导致蜘蛛螨的数量最少。Bb内生菌，Chlorpyrifos®和Karate®的施用导致了最少的棉花染色剂数量。的6395公斤公顷的最高平均棉籽产量^-1，6295公斤公顷^-1，和6141公斤公顷^-1被记录在与Bandit®，BB内生菌，和Eco-Bb®，分别喷洒地块。可以将杀生物剂和化学杀虫剂合并或替代，以用于未来的IPM计划以控制棉花害虫。