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Factors Affecting Control

Factors Affecting Control. What environmental factors affect control of undesirable species?. Proximity to surface waters, crops, livestock, residences and populated areas Drift- wind moves to the application of sprayed pesticides

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Factors Affecting Control

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  1. Factors Affecting Control

  2. What environmental factors affect control of undesirable species? • Proximity to surface waters, crops, livestock, residences and populated areas • Drift- wind moves to the application of sprayed pesticides • Granular and pelleted forms of pesticides are less sensitive to drift than liquid sprays • Tracts located in highly visible or sensitive areas may have to be sprayed or treated with ground or hand equipment instead of aerial spraying • Drift could kill valuable hardwoods

  3. Site applications generally follow a controlled burn to enhance the control of undesirable vegetation or to help with planting • Although spraying for undesirable kills browse for deer, it may increase seed-eating birds in an area like dove or quail that prefer little ground cover • The use of soil-active herbicides will not work well in wet areas • May have to use higher application rates on clay or silt content soils

  4. Effects of undesirable characteristics on application • Where large hardwoods are present, may have to use injection/cut surface treatments may be more cost effective • Areas which consist of dense stands of small hardwoods or sprouts may be more suitable for ground or aerial applications of pesticides. • No herbicide controls all species • Read the label on herbicides to determine best use

  5. Availability of application equipment and/or contract applicators • Equipment for hand application is readily available and relatively inexpensive. (i.e. backpack sprayers). Most are best suited for single stem or spot applications. Some can be used for broadcast applications as well. • Generally, equipment used to apply forest herbicides should not be used for the subsequent application of pesticides to crops. • Safety considerations concerning the operator=s exposure to herbicides and the safety equipment available to reduce risk of exposure must be factored into the treatment. • Several contract applicators, both aerial and ground equipped including hand labor, offer their services in Georgia. • A list of qualified applicators may be obtained from your local Georgia Forestry Commission office.

  6. Size, shape and location of the areas to be treated. • Large acreage may be more suited to broadcast treatment by ground or aerial equipment. • Tracts with irregular shapes or sensitive boundaries (crops or timber you do not want killed) may be better suited to ground equipment or hand treatment than aerial. • Small tracts may be treated by air if they are near other tracts that are being aerially treated. • A combination of methods may be needed. For example, a portion of a tract may be treated using a backpack sprayer around sensitive borders, while the remainder may be aerially applied.

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