Effect of nutrition on the management of the caterpillar

Foliar fertilizer associated with conventional insecticide favors the control of pests such as the caterpillar, in addition to increasing productivity in soybean areas.

The use of Fulltec S Max, associated with conventional insecticide, increased the control of the caterpillar by 27,8% and increased productivity by 6,8 bags per hectare, in relation to the standard treatment. Insect pest management is an important resource for maintaining high productivity in soybean crops. The caterpillars, popularly known as false worms (Chrysodeixis includens), are those with the greatest potential to cause damage to the crop, due to their voracious consumption of leaves and their behavior, since these caterpillars are normally housed in the lower and middle part of the plant, which makes control difficult . In this context, the association of insecticide with Fulltec S Max is an excellent tool to improve management.

Fulltec S Max has two mechanisms of action: dislodging and fumigating. These effects result in greater movement of the pest and, consequently, greater contact and ingestion of the insecticide. Fulltec S Max means nutrition, greater natural plant defense and better application quality. Very stable and soluble, high-tech and biodegradable formulation, which acts on the physiological processes of plants, with positive impacts on productivity. Fulltec S Max performs essential functions in plant development, such as the formation of the amino acids cysteine, cystine and methionine, thus being present in all plant proteins. In addition, it provides elements that are part of the composition of coenzymes and vitamins essential for energy metabolism and synthesis of organic compounds. The use of cultivars with high genetic potential, associated with sustainable development, requires innovative and disruptive products, such as Fulltec S Max.

Goal

To evaluate the effect of Fulltec S Max and other similar products, associated with an isolated insecticide, in the management of the silver leaf caterpillar (Chrysodeixis includens) and soybean crop productivity.

Materials and methods

The experiment was conducted at the Cocamar cooperative experimental station, in the municipality of Floresta, Paraná. The soybean cultivar M6410 IPRO was used in the test. The experimental design used was randomized blocks, with four replications. The treatments used were (L p.c. /ha): control, Cloralntraniliprole 200g/L a.i. (0,04) or standard, Cloralntraniliprole + Mineral Assist Oil (0,04 + 0,5% v/v), Cloralntraniliprole + Fulltec S Max (0,04 + 0,3) and Chloralntraniliprole + Fertilizer with S 16% (0,04 + 1,0). Previous evaluations were carried out and at five days and ten days after application (DAA), counting the number of caterpillars on ten plants at random, in the useful area of ​​each plot using a beating cloth. The variables analyzed were number of caterpillars, control effectiveness, thousand-grain mass and productivity. To assess the pest, the average of the two seasons evaluated was considered. The data were subjected to analysis of variance and the Tukey test (p < 0,05), using the SASM Agri software (Canteri et al..

Results

Fulltec S Max showed high synergism with the insecticide used, increasing the effectiveness in managing false insecticide. The average number of the pest at five and ten DAA (Figure 1) in the control was 39,8 caterpillars (0% of control), for Cloralntraniliprole alone 15,3 caterpillars (61,6% of control), Cloralntraniliprole + Mineral Oil with 10,6 caterpillars (73,3% control), Chloralntraniliprole + Fertilizer with S with 9,3 caterpillars (76,6%) and for Chloralntraniliprole + Fulltec S Max 4,2 caterpillars (89,4% control). The increase in control effectiveness by Fulltec S Max was extremely important for maintaining the crop's productive potential. In this context, in relation to the yield components (Figure 2), for a mass of one thousand grains, the values ​​were 123,2 grams for control, 133,5 grams for isolated Chloralntraniliprole, 135,7 grams for Chloralntraniliprole + Mineral Oil, 136,2 .138,4 grams for Chloralntraniliprole + Fertilizer with S and 51,4 grams for Cloralntraniliprole + Fulltes S Max. For productivity (hectare), the result for the control was 62,5 bags, Cloralntraniliprole alone 63,3 bags, Chloralntraniliprole + Mineral Oil 64,2 bags, Chloralntraniliprole + Fertilizer with S 69,3 bags and Chloralntraniliprole + Fulltec S Max with XNUMX bags.

Conclusion

Fulltec S Max, in addition to nourishing plants to maximize their productive potential, proved to be a promising alternative in the management of soybean caterpillars, presenting high synergism when associated with conventional insecticide.

Fagliari, J.R., Gouvea, S.V., Souza, E., Spraytec Fertilizers Technical Department