The effect of uridine and acaricide treatments agai̇nst damage of tomato russet mite

Tomato (Solanum lycopersicum L.) is one of the species of the Solanaceae family, which is native to the west coast of South America. It is among the most produced and consumed plants both in our country and in the world in terms of vegetable production and consumption. Alternative solutions are needed that will increase the tolerance of the tomato against the rust mite (such as promoting plant growth by reducing the damage and healing quickly). In this study, it was aimed to determine the effects of uridine alone or only half doses of acaricides (abamectin, acequinocyl, pyridaben, spiromesifen) and their combinations with uridine on mite damage in tomato seedlings infected with tomato rust mite under controlled conditions. Uridine is investigated for the first time in the literature in this regard. In the trial, abamectin 0.25 mg/L, acequinocyl 62.5 mg/L, pyridaben 15 mg/L and spiromesifen 25 mg/L concentrations were used in combinations where acaricide was applied. Physiological parameters such as plant growth rate, chlorophyll amount, leaf proportional water content and turgor loss were measured. In addition, the amount of MDA, glutathione and ascorbic acid and the changes in the CAT, APOX and SOD activities of some enzymes belonging to the antioxidant defense system were also examined. As a result of the analyzes made in the study, all parameters were found to be significant at the p<0.05 level in general. Compared to the control plants, significant improvements were detected in all parameters in plants using only uridine. Also, significant improvements were determined in the physiological and biochemical parameters of the plants using uridine compared to plants using only acaricide. It has been determined that uridine has an effect on both reducing the acaricide dose and alleviating the consequences of mite infestation.