Evaluation of the Effect of Different Hand-Held Sprayer Types on a Greenhouse Pepper Crop

The cultivation of vegetables in greenhouses is characterised by high planting density and environmental conditions that favour the development pests diseases. These are mainly controlled using plant protection products applied with a hand-held sprayer. This inefficient low-tech equipment difficult to calibrate. study evaluates one spray gun two lances widely used greenhouse vegetable crops. tests were carried out on pepper crop at different developmental stages. Plant canopy deposition losses ground quantified colorimetric method based applying tartrazine solution. results show flat-fan lance obtains more uniform distribution between 2 2.75 times less than when other sprayers tested.