Biological nematicide, fungicides and insecticides applied through seed, in of the soybean crop performance in the North of Mato Grosso

Among the phytonematodes Pratylenchus brachyurus, is becoming a major concern for producers due to reduction in soybean yield. Thus, there was the effect of biological nematicide and fungicide; applied to seeds (individually or associated), performance of soybean in commercial area infested with P. brachyurous. The treatments were: T1-No control; T2-Grafinat Plus (Paecilomyces sp. + Arthrobotrys sp. + Trichoderma sp.), Biological nematicide; T3-Cropstar FS; T4-Avicta Complete; T5-Standak® Top; T6-Plus Grafinat + Cropstar FC; T7-Grafinat-Plus + Avicta Complete and T8-Grafinat Plus + Top Standak®. The results obtained showed that there was no statistical difference between treatments in plant stand, height (cm) of plants at 20, 40 and 60 days after emergence, the stem diameter (mm), the number of pods and seeds per plant, the weight of 1000 grains (g) and density. However, the application of Standak Top® (individually) and Complete Avicta in association with Grafinat Plus increased height (cm) of first pod in the plant, facilitating at harvest by reducing the grain loss. But, the greatest productivity gains (bags ha-¹) were obtained by applying Standak ® Top and Full Avicta (applied individually).