Manejo de pragas e doenças na cultura da melancia

Abstract

Considering that watermelon is one of the most popular fruits in the world, being the fourth most planted vegetable in Brazil with an annual production of about 2 million tons, the objective of this work was to bring improvements in the management of the watermelon crop. A good management of pests and diseases is important to succeed in farming, always being updated on the challenges of the culture. The work used the active ingredient fungicides Cimoxanil + Famoxadone, Famoxadone + Mancozeb, Copper Hydroxide and Espinetoram that make up the Top Bac Program, focusing on the control of important pests and diseases. These products act with effective performance in the prevention of mildew, anthracnose and watery spot diseases and thrips and aphid pests in the watermelon crop. The experiment was implemented at the Matarazzo S/A farm in Pedro Osório — RS, where the evaluations began in the watermelon crop 3 weeks after planting and application of the products. The evaluations of the first crop were carried out on the dates twenty-two, twenty-nine, thirty-eight and forty-two days after planting. The treatments (T) were: Control stipulated by the producer with the use of a sprayer, alternating with the following products: Chlorothalonil, Azoxystrobin+ Difenoconazole, Difenoconazole and Test where the applications of the products were carried out weekly, using the products Famoxadona+Mancozeb, Copper hydroxide and Espinetoram. Based on the preliminary results, a significant reduction in pests and diseases was identified with high efficiency by the use of integrated pest management (MID) used in the Test treatment, where a higher efficiency index was obtained in all evaluations, surpassing the management Control used by the farmer, being necessary supplementary studies in the culture on phytosanitary managements.