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Correct Use of Herbicides
Quite often people have difficulty in controlling tough weeds in lawns, vegetable gardens, flower beds, nurseries, forests and agriculture fields. Herbicides can be very effective tools in controlling problem weeds when used correctly. However, if used incorrectly, herbicides may not perform as planned resulting in reduced weed control. (8/24/2009) |
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Grain Sorghum Insects
Grain Sorghum is an important minor rotational crop in Tennessee. Sorghum is more drought tolerant than either corn or soybeans and provides another non-host crop for managing soybean cyst nematodes. Grain sorghum should be planted from May 1 to June 1 for highest yields. Planting before mid-May will avoid some insect damage from the midge, fall armyworm, sorghum webworm and corn earworm. (7/29/2009) |
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Loopers in Soybeans and Cotton
Two species of loopers may infest soybeans and cotton grown in Tennessee. The cabbage looper (Trichoplusia ni) and the soybean looper (Pseudoplusia includens) both belong to the same family of insects (Lepidoptera: Noctuidae) and are difficult to distinguish from each other. (6/29/2009) |
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Three-Cornered Alfalfa Hopper
Threecornered alfalfa hoppers are usually seen in greater numbers in late-planted fields and in double crop soybeans. Lodging caused by feeding on small plants is often noticed following high winds after soybean plants developed a pod load and long after the girdling was done. (6/1/2009) |
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Powdery Mildew
Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales (5/5/2009) |
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Soybean Diseases and Nematodes
During 2008, Tennessee soybean producers harvested approximately 45,260,000 bushels of soybeans from 1,460,000 acres which gave a state average of 31 bushels per acre. The 5 year average soybean yield for Tennessee is 33.4 bushels per acre. According to Dr. Melvin Newman, plant pathologist with the University of Tennessee Extension Service, diseases reduced yields by 14.82 percent in 2008. (4/6/2009) |
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Soybean Production
Soybeans important crop for Tennessee producers. (2/10/2009) |
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IPM Changes for 2009
Changes in insect thresholds have occurred for the 2009 cropping season. (2/10/2009) |
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Colorado Potato Beetle
The Colorado potato beetle is found throughout most of the U.S. and Mexico and has been introduced into Europe and parts of Asia. Mexico is considered the center of origin for this pest. The Colorado potato beetle is an important part of the nightshade or potato family. The preferred host of this insect pest is the potato but it will also feed on tomato, eggplant, pepper, tobacco, ground cherry, horse-nettle, nightshade, belladonna, thorn apple, henbane, buffalo-bur and other related plant species.
(11/17/2009) |
