USE OF PHOSPHITE IN SOYBEAN CULTURE AS FOLIAR FERTILIZATION AND AID TO CONTROL OF CORYNESPORA CASSIICOLA

Abstract

THE EXPERIMENT IT WAS HELD AT THE FARM FATHER JOSEPH, IN THE MUNICIPALITY OF VILA PROP�CIO - GO, WITH PLANTING CARRIED OUT ON 12.12.2015 TO CULTIVATE MSOY 9144 RR. THE EXPERIMENT WAS PERFORMED WITH RANDOMIZED COMPLETE BLOCK CONTAINING 8 TREATMENTS WITH 4 REPETITIONS. THE TREATMENTS WERE PERFORMED: TREATMENT 1: CONTROL; TREATMENT 2: K PHOSPHITE R2 / R3, R5 / R6 AND R8 (1 L HA-1); TREATMENT 3: AZOXYSTROBIN + BENZOVINDIFLUPIR AT R2 / R3 AND R5 / R6 (0.2 KG HA-1); TREATMENT 4: AZOSTROBIN +BENZOVINDIFLUPIR + PHOSPHITE AT R2 / R3 AND R5 / R6 (0.2 KG HA-1) + (1.0 L H-1); TREATMENT 5: FLUXAPIROSADE + PYRACLOSTROBIN ON R2 / R3 AND R5 / R6 (0.3 L H-1); TREATMENT 6: FLUXAPIROSADE + PYRACLOSTROBIN PHOSPHITE AT R2 / R3 AND R5 / R6 (0.3 L H-1) + (1.0 L H-1); TREATMENT 7: AZOXYSTROBIN + BENZOVINDIFLUPIR AT R2 / R3 AND R5 / R6 (0.15 KG HA-1); TREATMENT 8: AZOSTROBIN + BENZOVINDIFLUPIR + PHOSPHITE AT R2 / R3 AND R5 / R6 (0.15 KG HA-1) + (1.0 L H-1). IT USED THE ASSISTAT 7.7 BETA PROGRAM FOR STATISTICAL ANALYSIS OF THE EXPERIMENT. THE USE OF PHOSPHORUS AND POTASSIUM (K PHOSPHITE) APPLIED IN CONJUNCTION WITH CHEMICAL FUNGICIDES RESPONDED LINEARLY TO ALL THE TREATMENTS USED . THE USE OF PHOSPHITE K DID NOT CHANGE THE PERFORMANCE OF FUNGICIDES TO CONTROL THE DISEASE MANCHA TARGET (CORINESPORA CASSIICOLA).