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Enter your keywords:Posts Tagged ‘Integrated Pest Management’
Integrated Pest Management: Tips for March
Begin monitoring conifers for spruce spider mites. These small, dark arachnids are active in cool weather and can be found on pines, hemlocks, arborvitae, and spruce and are especially damaging to Norway and dwarf Alberta spruce. Look for stippling on the needles and webbing in between the needles on the underside of the branches. A simple beat test is also a good way to detect their presence. Tap a branch over a white sheet of paper and look for tiny, slow moving, yellowish green mites. Also look for faster moving predatory mites or tiny, round black ladybird beetles that feed on the mites. If a beat test reveals more than twenty mites per beat, and you do not see predatory mites or ladybird beetles, you should treat your tree with horticultural oil or insecticidal soap.
Begin checking your dwarf white pines for white pine tip dwarf mites. Unlike most mites, white pine tip dwarf mites like cool weather and are most active in early spring. They cause older needles to become yellow and drop, and, if the tree is severely infested, it can become completely defoliated just before new foliage emerges in the spring. Beat test your trees weekly in early spring by tapping a branch on a piece of paper.
Integrated Pest Management
Pay close attention to your azaleas now to prevent ghastly yellowed and stippled leaves caused by the azalea lace bug. The lace bug feeds on the underside of leaves, but damage is apparent on the upper surface. Lace bugs leave cast skins and black, gummy, varnish-like feces on the underside of leaves. They deposit eggs, cemented with a brown crusty material, near leaf veins. Warm temperatures cause the eggs to hatch, usually in May. The damage becomes more visible as successive generations hatch in June and July. The lace bug thrives on azaleas grown in the sun; it falls victim to spiders on azaleas properly grown in the shade. Insecticidal soap, horticultural oil, or a systemic insecticide help to control this pest.
Integrated Pest Management
Woody and perennial weeds can be controlled now by spraying their foliage with glyphosate or triclopyr. Plants are moving sugars from their leaves down to their roots, and the herbicide will be moved as well, killing the root system of the weed and eliminating the chance for regrowth. Don’t spray unless winds are calm. Nonselective herbicides like these could kill any plant that comes in contact with the spray, so be extremely careful. In a tight spot, apply the herbicide with a paint brush or sponge attached to a long stick.
Integrated Pest Management: Tips for October
Integrated Pest Management: Tips for October
Woody and perennial weeds can be controlled now by spraying their foliage with glyphosate or triclopyr. Plants are moving sugars from their leaves down to their roots, and the herbicide will be moved as well, killing the root system of the weed and eliminating the chance for regrowth. Don’t spray unless winds are calm. Nonselective herbicides like these could kill any plant that comes in contact with the spray, so be extremely careful.
