MANEJO SUSTENTÁVEL DA MANCHA BACTERIANA DO TOMATEIRO NA SAFRA 2019

Abstract

The present study aimed to evaluate the management of the disease with conventional products, resistance inducers, and biological products, applied via spraying and/or drenching. The experiment was carried out in the experimental field of IF Goiano, Morrinhos. The tomato hybrid “Dominador” was used; hybrid seedlings were planted in a double row on mulching with a spacing of 0.7 x 0.7m. The plants were conducted on nylon ribbons tied to the wire. The trial was in a randomized block design, with 8 treatments and 4 replications. A plot consisted of approximately 14 plants. Always evaluate the 4 central plants of each row. Weekly treatments were applied to start at 30 days after transplanting (DAT), ending at 100 DAT. After 77 days of transplanting, the ripe fruits were harvested weekly. These were evaluated by commercial class, mass, and the number of fruits (class 1 = fruits with mass above 110 grams; class 2 - fruits with mass below 110 grams). Data were analyzed with the SAS 9.0 program, using Fisher's test (LSD). There was no significant difference between treatments for the variables total weight, mass, and the number of fruits in classes 1 and 2. The application of sprayed Acibenzolar-S-Methyl (Bion) reduced the number of rotten fruits. The severity was reduced with the application of Acibenzolar-S-methyl (Bion) via drench. With the present result, it is possible to delimit strategies in the control of bacterial leaf spots in tomatoes, reducing the severity of the disease in the table tomato cultivar.