Published in Scientific Papers. Series A. Agronomy, Vol. LXI, Issue 1
Written by Katarzyna DEREŃ, Antoni SZEWCZYK, Deta ŁUCZYCKA, Beata CIENIAWSKA
The aim of the research was to determine the coefficient of using the active substance (Ks.a.), which was used to assess the quality of the spray. The quality of spraying was determined by the amount of copper deposited used for spraying from two different preparations. Two standard nozzles, flat fan XR 110-02 and double flat fan DF 120-02, were used for testing, which operated at a constant speed of 0.86 m·s-1 and two pressures of 0.2 and 0.28 MPa. The foliar fertilizer containing copper and a preparation containing the nano copper particles were used for spraying. The deposition tests were performed in the “Aporo1” spraying chamber. Mineralization was carried out in order to determine the deposition of copper on winter rape plants, and then the concentration of the copper element in the tested plants was measured using a spectrometer. After obtaining the deposition results the coefficient of using the active substance (Ks.a.) was calculated. It was observed that the Ks.a. coefficient increases with the growth of the plant regardless of the spraying process parameters used.
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