By WCM Staff on 3/22/2007 1:36:00 PM

WCM PDF version of March 22 issue for download and printing

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By WCM Staff on 3/22/2007 12:01 PM

Are you interested in learning how the maximum return to nitrogen (MRTN) corn N rate guidelines work on your farm? If so, your County Extension Agent can help you conduct on-farm research that will tell you how much N was needed in your corn field in 2007.

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By WCM Staff on 3/22/2007 1:00 PM

Rootworm overwintering egg mortality depends not only on soil temperatures, but also on the duration and variability of temperatures. Crop or other vegetation cover and tillage practices will also influence soil temperatures.

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By WCM Staff on 3/22/2007 11:30 AM

We are again requesting cooperators to participate in the soybean 2-Pass Challenge trials during the 2007 growing season. The 2-Pass Challenge is an on-farm comparison of weed control programs in soybean.

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By WCM Staff on 3/22/2007 10:16 AM

With ethanol production and other factors pushing corn prices upward, I’ve been asked if that will have much impact on the price of organic corn and therefore on the profitability of organic dairy farms in Wisconsin. As I will explain below, I don’t think the current non-organic corn prices will have a big impact on the profitability of most organic dairy farms in Wisconsin.

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By WCM Staff on 3/22/2007 8:41 AM

A recent court case brought against the United States Department of Agriculture - Animal and Plant Health Inspection Service (USDA-APHIS) has resulted in the temporary banning of the sale of Roundup Ready alfalfa seeds (as of March 12th, 2007). If seed has already been bought, growers have until March 30th (2007) to plant the seed.

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By WCM Staff on 3/22/2007 8:28 AM

Weedy grasses are much more difficult to control as few tools can control grass weeds without injuring switchgrass seedlings.

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By WCM Staff on 3/8/2007 9:53 AM

I was recently asked if I had a list of generic or post-patent corn and soybean herbicides. Although I don’t have a list, I would recommend the Department of Agriculture, Trade, and Consumer Protection web site of “Pesticide Database Searches” at http://www.kellysolutions.com/wi/.

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By WCM Staff on 3/8/2007 9:49 AM

Valor XLT is a premix of Valor (30% flumioxazin) and Classic (10.3% chlorimuron) by Valent which is labeled for broadleaf weed control and suppression of annual grasses. The main label does not include mention of use in Wisconsin, but a supplement label is available from Valent (not on CDMS) that allows use of the lowest labeled rate of 2.5 oz/a in southern Wisconsin. Applications can only be made south of I-90 between LaCrosse and Madison and south of I-94 between Madison and Milwaukee.

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By WCM Staff on 3/8/2007 9:43 AM

While continuous corn may affect insect and disease management, I believe the effect on weed management will be relatively minor. Because corn is not a “host” of weeds like corn is a host of disease or insects, corn will not cause specific weed species to increase just because it is planted. Rather, weeds may increase because other practices used in corn production allow weed shifts or increased weed populations.

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By WCM Staff on 3/8/2007 9:40:00 AM

WCM PDF version of March 8 issue for download and printing

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By WCM Staff on 3/8/2007 1:00 AM

Planning to plant Bt corn hybrids this spring? If so, growers and consultants are required by law to have an insect resistance management (IRM) plan in place. The IRM plan is implemented by planting refuge corn acres on each farm where a Bt corn hybrid is planted.

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By WCM Staff on 3/8/2007 12:00 AM

With increased interested in corn grain production this year, it is important to consider phosphorus (P) and potassium (K) management as well as nitrogen (N).

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By WCM Staff on 3/8/2007 12:00 AM

A consequence of long-term continuous corn production could be the adoption of more aggressive tillage to manage large amounts of crop residue. This could potentially lead to decreased soil quality and increased soil loss. Producers must carefully consider tillage options when growing corn on corn.

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