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Increased coverage when spraying, especially using contact substances, leads to higher efficiency and crops. Conventional nozzles, where the droplets move parallel to the stem of the plant ensures a good covering of the horizontal and inclined parts of plants, the vertical parts (strain) the deposit of the solution particles is lower and thus the coverage is inadequate. To remove this shortcoming, firms constructed nozzles with jet angle (symmetric or asymmetric), which provide good coverage also on the vertical parts of the plant. Experimental tests conducted with two types of nozzles aimed the coverage assessment of horizontal and vertical parts of the plant using conventional and double jet nozzles. Evaluation of coverage was made â€‹â€‹using water sensitive paper and the MATHCAD program, which determines the area covered. After processing and interpreting the results, experimental data revealed that using the double jet nozzles an increased coverage of vertical parts is assured, maintaining good coverage onto the horizontal parts.

Research Regarding the Assesment of the Coverage Degree for Phytosanitary Treatments Using Different Types of Nozzles