Granular Application Of Pesticide
Some pesticides are applied as granules that have been impregnated with a fixed amount of pesticide to eliminate the need for mixing. When used for row crops, most granular pesticides are applied with either a band applicator or a broadcast applicator. Because some granule applicators are sensitive to speed, it is important to maintain a uniform travel speed for consistent performance. Wind can greatly affect the distribution from granule applicators. Adjust distributors to minimize the effects of wind. To reduce the effects of moisture on the metering of granules, empty the granule hoppers every day.
Granule application rates are affected by the following variables:
- Orifice size (feeder-gate setting)
- Ground speed
- Agitator speed
- Size and nature of granules
- Roughness of the ground
Other Methods of Pesticide Application
Different application methods are appropriate for different crop and pest types, but the method of application should always be consistent with the label directions. Application methods include:
- Band application, applying a pesticide in parallel strips or bands, such as between rows of crops rather than uniformly over the entire field.
- Basal application directs herbicides to the lower portions of brush or small trees to control vegetation.
- Broadcast application is the uniform application of a pesticide to an entire area or field.
- Crack and crevice application is the placement of small amounts of pesticide into cracks and crevices in buildings, such as along baseboards and in cabinets, where insects or other pests commonly hide or enter a structure.
- Directed-spray application specifically targets the pests to minimize pesticide contact with non-target plants and animals.
- Foliar application directs pesticide to the leafy portions of a plant.
- Rope-wick or wiper treatments release pesticides onto a device that is wiped onto weeds taller than the crop, or wiped selectively onto individual weeds in an ornamental planting bed.
- Soil application places pesticide directly on or in the soil rather than on a growing plant.
- Soil incorporation is the use of tillage, rainfall, or irrigation equipment to move the pesticide into the soil.
- Soil injection is the application of a pesticide under pressure beneath the soil surface.
- Space treatment is the application of a pesticide in an enclosed area. w Spot treatment is the application of a pesticide to small, distinct areas.
- Tree injection is the application of pesticides under the bark of trees.