At Different herbivores react differently depending on the degree of plant diversity present. Highly polyphagous herbivores like Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) do significant harm to a variety of crops. Here, using both preferred and less preferred host plants such as Chinese cabbage (Brassica rapa L.), tomato (Solanum lycopersicum L.), kidney bean (Phaseolus vulgaris L.), and summer squash, we raised this species in both polyculture and monoculture (Cucurbita pepo L.). Trends in oviposition and survival were noted, and the effects of plants on the growth and development of B. tabaci were investigated, with a focus on the insects' enzymatic activity for digestion and detoxification. We discovered that the monoculture treatment for Chinese cabbage had the highest survival rate. In the setting of polyculture, more eggs were seen in each of the four plant species tested. The activity of Superoxide Dismutase (SOD) and Alkaline Phosphatase (AKP) in B. tabaci fed in a choice situation was significantly lower than in those fed with tomato monoculture, indicating a diluted level of toxicity with a multi-plant diet compared to a less desirable host plant diet.Additionally, there was a bad correlation between the SOD quantity of whiteflies and the survival rate of B. tabaci in monoculture. Chinese cabbage's Polyphenol Oxidase (PPO) and Catalase (CAT) activities were lower in the polyculture than in the monoculture in the plants infected by whiteflies. These findings suggested that multi-plant treatments would be less hazardous to polyphagous herbivores and include fewer secondary metabolite compounds.
