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Area Farmers Hit By Soybean Aphids


Fri, Aug 10th, 2001
Posted in

Virginia CooperMonday, August 13, 2001

Soybean aphids have emerged to raise havoc in area fields. Until now, farmers have had little information about this relatively new pest. During the summer and autumn of 2000, heavy infestations of the soybean aphid (Aphis glycines) were observed in southeastern Michigan, southern Wisconsin, southeastern Minnesota, northern Illinois, and northern Indiana. Previously unheard of, it was initially thought to be the cotton/melon aphid, Aphis gossypii.

This pest has moved far and wide in a relatively short time. The North Central Pest Management Center last year stated that this broad distribution of infestation indicated that Aphis glycines had been in North America for more than a single year, possibly undetected for as many as three to four years.

A native insect of China and Japan, soybean aphids are now found in Australia, Korea, the Philippines and the Pacific Islands. Many other aphid species can be found landing in soybean fields, but because the soybean is not a suitable host, other types of aphids do not develop colonies on soybeans.

Two very different types of host plants are required by the soybean aphid to complete its life cycle. The cultivated soybean, Glycine max, also native to Asia, is the only confirmed summer host of the soybean aphid in North America. Aphid eggs overwinter on buckthorn (Rhamnus ssp.). Only two species of buckthorn, R. davurica and R. cathartica have been shown to be acceptable winter hosts for the soybean aphid. Both of these species are exotic and tests are only now being conducted to determine whether any of the other introduced or native species of Rhamnus are acceptable winter hosts.

The aphids are very small, yellow with distinct black conicles. They are found on stem apices and young leaves of growing soybean plants, and on the undersides of leaves of mature plants.

Their complex life cycle can have as many as 15 to 18 generations each year.

Nymphs hatch in the spring and after two generations of wingless females, a generation of winged females is produced that migrates from buckthorn in search of soybean plants. During the summer a repeated series of wingless generations develop in the soybean fields followed by a winged generation that disperses from its crowded host in search of other soybean plants. In the autumn, there is a migration back to buckthorn by winged females that produce a generation of egg-laying wingless .....
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Edgar, Nucla and Niwot

Fri, Aug 10th, 2001
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By Wayne PikeMonday, August 13, 2001

I am looking out the window at our drought-scorched pasture. I should go outside to accomplish something, but it is too hot. I am just going to let my mind wander back to our trip to Colorado in June. We go ..... 
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Olympic Games With Chinese Tendencies

Fri, Aug 10th, 2001
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Monday, July 23, 2001

If you havent heard by now, China will host the 2008 Summer Olympics in Beijing. The country has been working for the last 10 years to get the games believing that the international spectacle will give China the prestige ..... 
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Fri, Aug 10th, 2001
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Fri, Aug 10th, 2001
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Fri, Aug 10th, 2001
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To the Editor,

Fri, Aug 10th, 2001
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Monday, August 6, 2001

We would like to address a problem that has bothered us for several years at the Fillmore Fair and also some of the other local fairs in our area.

Our problem is with the 4-H Livestock Auction. We feel the auct ..... 
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Submit a Letter to the Editorhere

Fri, Aug 10th, 2001
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To the Editor,
Monday, August 6, 2001

Emotions rule over law at Board of Adjustment meeting (July 30, 2001 Journal).

My sympathy goes out to the Livingoods.

My wife and I own a small farm on the outside of Mabel. Fil ..... 
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Vernon H. Vigeland

Fri, Aug 10th, 2001
Posted in

Vernon H. Vigeland, 77, of LaCrosse, Wis., formerly of Mabel, Minn. died March 12, 2001 at the Green Lea Manor Nursing Home in Mabel where he had resided for only a week.

Vernon was born September 5, 1923 in Preble Township, Fillmore County, M ..... 
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