Comparative Effect of Stocker® Fertilizer and Evisect® on Greenhouse Whitefly Trialeurodes vaporariorum (Hem.: Aleyrodidae) to Optimize Tomato Pest Control Management

Subject Areas : Optimizing the use of fertilizers and poisons

Mozhdeh Momeni ¹ , Mehdi Dehghani-Zahedani ^{2 *} , A. R. Jalalizand ³

1 - Master's degree of Agricultural Entomology, Khurasegan Branch, Islamic Azad University, Esfahan, Iran
2 - Assistant Professor, Department of Plant Protection, Yazd Branch, Islamic Azad University, Yazd, Iran
3 - Plant Protection Department, Faculty of Agriculture, Islamic Azad Unversity, Isfahan (Khorasgan) Branch, Isfahan, Iran

Received: 2025-01-17 Accepted : 2024-06-20 Published : 2024-06-20

Keywords: Trialeurodes vaporariorum, Stoker, Evisect, Tomato, Central composite design.,

Abstract :

Objective: Greenhouse whitefly, Trialeurodes vaporariorum (Westwood)., is one of the most critical greenhouse pests in the world. It is spreading rapidly, and various pesticides and biological control agents are generally used. Due to the large number of generations and the occurrence of resistance to pesticides in whiteflies, it has become essential to study and research new and alternative insecticides to be more effective and reduce genetic resistance in whiteflies

Material and methods: In this research, the effect of Stoker and Evisect on T. vaporariorum was done in the form of a completely randomized block design with seven treatments and five replications (Tomato plants). The treatments include three Pesticide-fertilizer (combination of insecticide, surfactant, nitrogen, phosphorus and potash), Stoker at the ratios of 2.5, 2, and 1.5 per thousand, and three treatments of Evisect at the ratios of 1.5, 1, 0.5 per thousand, and control treatment (Distilled water). Determining the mortality rate and counting the nymphs was done after 24, 48 and 72 hours.

Results: The comparison of the averages of the interaction effect of treatment and time showed that the highest percentage of whitefly losses was 63.2%, related to the treatment of Stoker's pesticide-fertilizer with a concentration of 2.5 per thousand on the third day. The results of the central composite design (CCD) showed that Stocker (with a mortality rate of 85%) compared to Evisect (with a mortality rate of 50%) is more effective on whitefly nymphs.

Conclusion: In the end, it was determined that Stoker was more effective than Evisect for controlling greenhouse whiteflies on tomato plants, and it can be recommended in the integrated pest management programs.

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