Field evaluation of botanicals extracts for suppressing the mango scale insect, Aulacaspis tubercularis (Newstead) (Hemiptera: Diaspididae)

摘要

Insecticidal property of aloe, ginger, garlic, and hot pepper extracts were evaluated in the form of alone spray or in combination of two plant sources or as a mixture of all plant extracts in comparison to the insecticide Lambda on the mango scale insect, Aulacaspis tubercularis (Newstead) (Hemiptera: Diaspididae). Field experiments were carried out at Fayoum Governorate, Egypt, in February 2017 and March 2018. Results revealed that Lambda insecticide decreased the population of treated A. tubercularis, and the total reduction rates reached to 62.0 and 72.52% in seasons 2017 and 2018, respectively. Meanwhile, the used botanical mixture caused 83.60 and 72.52% reduction of the scale insects in the respective seasons. Also, results revealed that the combination of garlic and aloe was the most effective one in reducing A. tubercularis in the two successive seasons by 58.71 and 59.93%, respectively. The hot pepper was the least effective one in reducing population with the rates of 19.48% in season 2017 and 21.51% in season 2018.