CHEMICAL CONTROL OF SOY PERCEPTIONS IN THE SÃO PATRÀCIO VALLEY

Abstract

THERE IS A CONSTANT DISCUSSION AMONG PRODUCTS ABOUT WHAT IS MOST EFFECTIVE IN CONTROLLING SOYBEAN BUGS. THUS, THE OBJECTIVE OF THIS WORK WILL BE TO EVALUATE THE EFFICIENCY OF THE MAIN INSECTICIDES USED IN THE CONTROL OF THE BUGS OF THE SOYBEAN CROP IN THE GOIAN�SIA AND VILA PROP�CIO-GO REGIONS, AND TO TEST ADDITIVES AND ADJUVANTS THAT MAXIMIZE THE CONTROL EFFICIENCY OF THESE PRODUCTS. THE STUDY WAS CONDUCTED AT PAI JOS� FARM, IN THE MUNICIPALITY OF VILA PROP�CIO-GO. THE EXPERIMENTAL DESIGN WAS A RANDOMIZED COMPLETE BLOCK DESIGN WITH A 9X3 FACTORIAL SCHEME, WITH EIGHT INSECTICIDES / DOSES AND ONE CONTROL, THREE TREATMENTS (NACL, ACQUAMAX ^�®, AND NO ADDITIVE / ADJUVANT) AND FOUR REPLICATIONS. IN ALL, 27 DIFFERENT SCENARIOS WERE TESTED. THE APPLICATION WAS PERFORMED USING A COSTLY RESEARCH SPRAY (HERBICAT^�®), WITH A SIX-POINT BAR (100-02) SPACED AT 0.5M, WITH AN APPLIED RANGE OF 3 METERS. THE VOLUME OF THE SYRUP USED WAS 150 L / HA, WITH A PRESSURE OF 0.75 KG, AND A SPEED OF 4.5 KM / H. THE DATA WERE SUBMITTED TO ANALYSIS OF VARIANCE USING THE GLM PROCEDURE, FOLLOWED BY THE TUKEY TEST TO SEPARATE THE MEANS. THE TRANSFORMATIONS USED WERE �ˆŠ (X + 1) FOR THE VARIABLES NUMBER OF BEDBUGS PER METER BEFORE, AND WITH 24 AND 72 HOURS AFTER APPLICATION. THE CONTROL EFFICIENCY WAS TRANSFORMED USING THE �ˆŠ (% / 100) +0.5 ARC-SINE. THE CONNECT^�® 1L / HA (IMIDACLOPRID + BETACIFLUTHRIN) REDUCED THE POPULATION OF BED BUGS FROM 12.4 PATA 1.4 BUGS PER METER WITH 24 HOURS AFTER THE APPLICATION. PERITO^�® 1KG / HA (ACEPHATE) WAS THE HIGHEST RESIDUAL PRODUCT, PRESENTING MORE THAN 80% CONTROL EFFICIENCY WITH 72 HOURS AFTER THE TEST INSTALLATION. NO INSECTICIDE KEPT THE BED BUG POPULATION BELOW THE CONTROL LEVEL ON THE THIRD DAY AFTER APPLICATION. THE NEONICOTINOIDS + PYRETHROIDS AND ORGANOSPHOSPHORATES WERE MORE EFFICIENT IN THE CONTROL OF BEDBUGS THAN THE PYRETHROIDS. THERE IS NO ECONOMIC OR AGRONOMIC JUSTIFICATION FOR THE USE OF THE ACQUAMAX^�® ADJUVANT IN THE APPLICATION OF INSECTICIDES. ENGEO PLENO^�® (TIAMETOXAN + LAMBDA-CYHALOTHRIN) AND PERITO^�® (ACEPHATE) IN THE LOWER DOSE HAVE A HIGH CONTROL EFFICIENCY AND A 44-30% LOWER COST. THE COST-BENEFIT RATIO OF THE ADDITION OF COOKING SALT PROVED TO BE EXTREMELY ADVANTAGEOUS, COSTING R$ 0.75 / HA AND AN INCREASE IN CONTROL EFFICIENCY OF OVER 15%.