UNIFORMITY OF APPLICATION OF IRRIGATION BLADE IN SUGARCANE BY SELF-PROPELLED WITH DIFFERENT SERVICE PRESSURES

Abstract

IRRIGATION IN THE SUGARCANE CROP IS IMPORTANT IN THE INITIAL ESTABLISHMENT OF THE CANE FIELD OR SALVAGE AFTER CUTTING. THE UNIFORMITY OF APPLICATION OF THE IRRIGATION BLADE IS AN EVALUATION CRITERION OF THE IRRIGATION SYSTEM AND SERVES AS A BASIS FOR DECISION MAKING REGARDING THE MAINTENANCE AND OPERATION OF THE SYSTEM. THE OBJECTIVE OF THIS WORK WAS TO EVALUATE THE UNIFORMITY OF THE BLADE APPLIED BY A SELF-PROPELLED SPRINKLER SYSTEM WITH DIFFERENT SERVICE PRESSURES. THE TRIAL WAS CONDUCTED ON SEPTEMBER 14, 2018, IN THE MUNICIPALITY OF SANTA ISABEL - GO. PRECIPITATION COLLECTOR CUPS WERE INSTALLED IN THE SPACING BETWEEN THE TWO IRRIGATION SPOOLS, SPACED 5 M BETWEEN COLLECTOR AND 5 M BETWEEN LINES, TOTALING 13 COLLECTORS PER LINE AND 3 COLLECTION LINES. THE PICK-UP SPEED WAS SET AT 100 M / H, WITH THE INTENTION OF APPLYING A 16.33 MM BLADE. THE SYSTEM OPERATED AT THREE SERVICE PRESSURES: 4.0 KGF CM-2, 5.0 KGF CM-2 AND 6.0 KGF CM-2. STATISTICAL UNIFORMITY (CUE), CHRISTIANSEN (CUC) AND DISTRIBUTION (CUD) COEFFICIENTS AND APPLICATION EFFICIENCY (EAP) WERE DETERMINED. WIND SPEED AND INSTANT AIR TEMPERATURE WERE MONITORED WITH A DIGITAL ANEMOMETER. THE UNIFORMITY OF APPLICATION VARIED BETWEEN 71.6 AND 82.0%, BEING CONSIDERED REASONABLE. THE AVERAGE EAP WAS 87.1%. THE PRESSURE OF 6.0 KGF CM-2 PROVIDED BETTER PERFORMANCE IN UNIFORMITY AND EFFICIENCY.