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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...
A directed air-jet sprayer (SEPIA) was compared with a conventional radial flow sprayer (TERMIT) to determine possible control of spider mites (Tetranychus urticae Koch) and currant rust (Cronartium ribicola J. C. Fisher) on black currants when using spray volumes 260, 400 and 600 dm3 ha-1 and different dose rates of chemicals. The Cumulative Infestation Index (CII) for spider mite and percentage...
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