Effect of nitrogen and potassium fertigation on the quality of Italian zucchini fruit
The objective of this study was to evaluate the effect of nitrogen and potassium fertigation on the quality of ‘Novita Plus’ Italian zucchini fruit. The experiment was conducted under greenhouse conditions at the Technical Center of Irrigation, Department of Agronomy of the State University of Maringá. The drip irrigation system was used such that each plant was irrigated by a dripper operating at a nominal flow of 4 L h-1 and a service pressure of 10 m.c.a., which was controlled by means of a pressure gauge of glycerin installed in the control head of the system.