Assessment of the influence of working pressure and application rate on pesticide spray application with a hand-held spray gun on greenhouse pepper crops
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Rincón Cervera, Víctor Jesús![Autoridad Universidad de Almería Autoridad Universidad de Almería](/themes/Mirage2/images/autoridades/autoridad.png)
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2017-06-01Resumen
Choosing the appropriate machinery for applying pesticides is crucial. Despite the availability of technologically more advanced equipment, the hand-held spray gun is still widely used today for spraying greenhouse crops because of its ease of operation and its low economic cost. Growers believe that a high spray application rate and a high pressure are needed to achieve good pest and disease control. In this study, the effects of pressure and volume application rate for application of treatments using a hand-held spray gun to greenhouse pepper crops were evaluated. In the first case, three different pressures were assessed: a reference at 2000 kPa (P20) and two others at 1500 kPa (P15) and 1000 kPa (P10). To test the effects of application volume, three application volumes were used: one considered to be reference (V100), applied by an experienced grower, and two reductions thereof, i.e. 25% (V75) and 50% (V50). Each test was made at two different stages of crop development. The resul...
Palabra/s clave
Application rate
Greenhouse crop
Spray deposition
Spray lance
Spray pressure