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Vege Notes
BIOSECURITY
Capsicum-viruses
Carrot-management
Carrot-nematodes
Cool Chain
Cucumber Diseases
FreshCare
IDO Network
IPM-Brassica
IPM-Celery
IPM-Lettuce
IPM-Sweet Corn
Irrigation
Lettuce Aphid
Minor Use
Pesticide Resistance
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R&D Levy
Recycled Water
Sclerotinia
Silverleaf Whitefly
Slugs
Spray Application
VegeNotes - 2006 to Present
Washwater
Weed Control
Western Flower Thrips
Contact Details
AUSVEG VIC

PO Box 138
273 Camberwell Rd
Camberwell, VIC 3124

Tel: 0437037613
Fax: 03 9882 6722
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Spray Application

Plant Protectants are used in the vegetable industry to control pests, diseases and weeds. The majority of these products are applied in the form of droplets produced from different types of nozzles mounted on spray booms. To maximise spray efficiency, droplets must be uniformly distributed on the target surface with minimum loss (usually caused by drift, evaporation and run-off).

Poor spray application techniques waste chemicals, reduce control of pests and result in loss of yield and quality. This ultimately leads to lower returns for the grower.

Droplets are very small and usually measured in microns (μm), with one micron equalling one thousanth of a millimeter. When operating at any given pressure, hydraulic nozzles produce a range of droplet sizes. There is an important relationship between droplet size, volume and the number of droplets that can be produced from a fixed volume of spray application. As the size of droplets reduces, the number produced from the same volume of spray increases.

Spray Application
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To achieve the best possible spray coverage you need to consider the following:

  • Accurate pest and disease identification

  • Suitable droplet size and water volume

  • Application under the appropriate environmental conditions

  • Using clean water of the correct pH

  • Correctly calibrated and maintained spraying equipment

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Features...
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Victorian Vegetable Industry - 2014

Summary of the location, structure, production and performance of Victoria's vegetable industry prepared by the Victorian State Government in 2014. In... Read more...

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