In this study which took place during the 2021 year we tested the biological efficacy of neem (AzadirachtaindicaA. Juss) seed oil on aphid populations. The researchwas performed under laboratory and greenhouse conditions using cucumber (Cucumissativus L) plants. The laboratory experiments showed a strong aphicide effects, the pests dying before they could leave the treated cucumber leaves. The greenhouse studies confirmed the potent insecticide action, however they also showed a moderate repellent effect. The extract inhibited aphid feeding for a period of 5-7 days but was not able to completely inhibit the consumption of plants. The neem oil in a dose of 10 L/ha has the potential to be used as an aphicide, the highest biological efficacy being reached after two treatments with an interval of 10 days between them.

Tuta absoluta comes from South America. In Europe it was reported for the first time in Spain in 2006. In Republic of Moldova, according to the literary sources, the tomato moth was reported for the first time in 2013 (in Chișinău). In the absence of some efficient prevention and combating measures of the Tuta absoluta pest it spread more and more, and became a pest of major concern for all the Moldavians farmers which deals with the cultivation of tomato crops in the protected areas. Following the phyto sanitary controls the most cases was found the central region of the country. For the monitoring of the tomato moth pest, in the protected area, was used the water universal trap, the ultraviolet light, the colored adhesive plates and sexual pheromones. As a chemical method of the tomato moth pest combating was used: the insecticide Afirm WG dose of 1. 50 kg/ha.

Considering the growing demand for organic production of food and registration-related problems, the number of pest management products that can be used in this sort of production is limited. In this study the efforts have been made to formulate the Neem oil emulsions which would be used as agrochemicals. Bioassays were performed on aphids (Myzodes persicae Sulz., Aphis gossypii Glow , Aphis pomi Deg.) in order to compare the insecticidal activity of the neem oil new preparative form NEEM-01 with that of the commercial biorational product Pelecol EO. The bioassays conducted on the aphids demonstrated that the NEEM-01 aplicated at the doze 8,0 l/ha was not effective as the commercial product Pelecol EO. But at the doze 10,0 l/ha new preparative form of neem oil has demonstrated a good biological effectiveness during 7 days after two treatments.

The effectiveness of the integrated protection system is largely determined by the quality of pest development monitoring, which can be successfully performed by using devices with ultraviolet light sources with a certain wavelength. In order to carry out surveillance in order to signal the appearance of the main pests of the tomato crop, especially the mining moth, it is reasonable to develop new technolo-gies and methods of protection of this crop, using in existing protection systems electro-optical devices - light traps ultraviolet.