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Dawki cieczy stosowane w uprawach przestrzennych, takich jak sady jabłoniowe, powinny być dobrane do wielkości drzew. Jedną z metod doboru dawek dla sadów różnego typu jest wykorzystanie do ich obliczania objętości koron drzew (formuła TRV - Tree Row Volume). Celem doświadczenia była weryfikacja biologiczna koncepcji TRV. Stosowane dawki TRV okazały się skuteczne w zwalczaniu parcha jabłoni (Venturia...
The characteristics of air jet together with travel velocity of the sprayer are crucial factors influencing the penetration of air in the tree canopy. The objective of the study was to determine the volume of air penetrating into the canopy of apple trees, produced by three orchard sprayers with different fan types and operated at different travel velocities. Due to different fans, the following discharge...
The paper presents the method of quantitative and qualitative evaluation of spray application based on deposit and coverage measurements on artificial targets. This relatively simple and fast method is proposed for small scale comparative field experiments with air-assisted orchard sprayers. Biological efficacy, being very important for the grower, is not enough informative method of evaluation of...
The aim of the study was to examine the effect of calcium chloride (CaCl,) spraying at different rates of water on apple (Malus domestica Borkh.) calcium concentration. The examination was carried out in 1997-1998 on 'Jonagold' apple trees grafted on M.26 rootstock and planted in 1990 on sandy-loam soil at a distance of 4 x 2.5 m.The trees were trained as a spindle at 2.4 m and 2 m of height and canopy...
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