Alfalfa Weevil


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Related to Alfalfa Weevil: Potato Leafhopper

Alfalfa Weevil

 

(Phytonomus variabilis), a beetle of the family Curculionidae, injurious to alfalfa. The insect measures 4.5–6.5 mm and has a grayish brown body. The larvae, which reach a length of 9 mm, are green; their sides and back are covered with bristles. They pupate on plants. Alfalfa weevils are distributed in central and southern Europe, Asia (including southern regions), North America, and North Africa. The larvae cause most of the damage by eating alfalfa leaves and flowers, thereby reducing yields of hay and seeds.

Countermeasures include isolating new alfalfa plantings from old ones, disking and harrowing of soil in early spring, and spraying the alfalfa with insecticides during aftergrowth and the formation of buds.

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Columbia, Missouri, to measure the concentration of Se in whole bodies of adult females from the 4 colonies, and in the alfalfa foliage, the alfalfa weevil larvae, the T.
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They can also kill parasites previously established by our lab that now control three other pests of alfalfa - the alfalfa weevil, pea aphid, and alfalfa blotch leafminer."
This method of conidial delivery was similar to that used by Hedlund & Pass (1968) on the alfalfa weevil. Insects were transferred to holding cages, based on gender, with 2 organically grown baby carrots and a cotton ball saturated with sterilized water.
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