By WCM Staff on 6/27/2008 3:04 PM

File for print or viewing the Wisconisn Vegetable Crop Update June 19, 2008, Issue #6

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By WCM Staff on 6/25/2008 2:13:00 PM

This PDF file contains all the articles for the week. You can view it in your browser, or download it for printing

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By WCM Staff on 6/25/2008 2:32 PM

Soybean aphids made their debut in early vegetative soybeans in Wisconsin over the last two weeks. Reports in this article are from V2 to V4 soybeans. Populations are not of economic concern at this time. Weekly soybean aphid scouting should begin by late vegetative soybean growth stage and before early reproductive stage (beginning bloom). It is a good idea to monitor soybean fields for arrival of soybean aphid and colonization in your fields while checking soybean stands.

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By WCM Staff on 6/25/2008 10:28 AM

The PDDC receives samples of many plant samples from around the state. The following diseases/disorders have been identified at the PDDC since June 18, 2008:

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By WCM Staff on 6/25/2008 10:15 AM

Wheat head scab (synonym, wheat head blight), caused by several species of Fusarium, but in the U.S., mainly Fusarium graminearum, was noted in a routine survey of the winter wheat variety trials during the week of June 16th (Figure 1). This was not an unexpected discovery given the recent weather conditions during the flowering period.

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By WCM Staff on 6/23/2008 2:54 PM

Degree Day accumulations suggest the southern ½ of Wisconsin is at, or just past peak European corn borer flight and the most opportune treatment timing (if needed) may be starting in southern Wisconsin. Spot-check earliest planted corn because it is more attractive to female first generation European corn borer moths to lay eggs.

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By WCM Staff on 6/19/2008 1:03:00 PM

THis PDF file contains all the articles for the week. You can view it in your browser, or download it for printing.

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By WCM Staff on 6/19/2008 11:21 AM

File for print or viewing the Wisconisn Vegetable Crop Update June 19, 2008, Issue #5

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By WCM Staff on 6/19/2008 12:18 PM

There have been a few reports of armyworm damage on corn planted after a small grain cover crop or in dense weed growth. This is not out of the ordinary for this time of the year. But it does make you wonder what is happening in wheat. I’ve noticed some lodging of wheat from recent storms.

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By WCM Staff on 6/19/2008 12:15 PM

There has not been any widespread insect problems reported lately, but there have been some isolated reports of a few different problems. Alfalfa weevil is one that should be mentioned.

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By WCM Staff on 6/18/2008 1:51 PM

The PDDC receives samples of many plant samples from around the state. The following diseases/disorders have been identified at the PDDC since June 11, 2008:

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By WCM Staff on 6/18/2008 1:46 PM

Three recent events trigger this article. First, a call from a landowner with significant concerns after watching a herbicide application with winds alleged at 20 mph blowing towards their berry crop. Second, yesterday’s wind that was gusting well over 20 mph and preventing herbicide applications at a time when we need to spray our trials just like many custom applicators and growers who need to spray corn fields. Third, a call asking about the risk of dew affecting glyphosate performance if spraying in early mornings to avoid the wind.

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By WCM Staff on 6/18/2008 12:37 PM

Unprecedented rainfall continues to cause flooding and ponding leading to problems for corn establishment on 5 to 10% of planted acres in southern Wisconsin. Flooded and ponded areas have existed long enough now so that plants have been killed and areas need to be replanted. Most planted acres are still in good shape, but fertilizer and herbicide treatments need to be applied as soon as possible since the majority of the crop is at the V4-V5 stage and lay-by (V-10) will be occurring within the next two weeks.

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By WCM Staff on 6/13/2008 2:47 PM

Recent rains have caused flooding and ponding in many cornfields. Growers are concerned about corn growth and development and any yield effects that might occur from short periods of flooding. The extent to which flooding injures corn is determined by several factors including: 1) timing of flooding during the life cycle of corn, 2) frequency and duration of flooding, and 3) air-soil temperatures during flooding

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