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Plant Disease
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Author: |
WCM Staff |
Created: |
4/27/2006 3:56 PM |
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That's sick! Articles concerning plant pathology in Wisconsin field crops. |
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Foliar Fungicides for Corn and Soybean – Don’t Rush to Spray |
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By WCM Staff on
7/9/2008 11:08 AM
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We have started to receive questions and initial reports regarding the need to spray foliar fungicides in corn and soybean. Many of these questions have been received in part because of initial observations of lesions on both plants. Actively scouting fields is an important step in the decision making process about whether or not a foliar fungicide is needed.
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Scab Incidence and Severity Relatively Low Across the State |
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By WCM Staff on
7/3/2008 11:37 AM
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A recent survey of our winter wheat variety trials found Fusarium Head Blight (FHB) or Head Scab at all four of our variety testing locations: Janesville, Arlington, Lancaster, and Chilton. At these locations, both incidence and severity are relatively low. At our most uniform and prevalent FHB site (Lancaster) our ratings show an FHB index range from 0.6 to 8.8 among the varieties.
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Wheat Head Scab Beginning to Occur in Wisconsin |
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By WCM Staff on
6/25/2008 10:15 AM
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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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Winter Wheat Update For Early June and Wheat Diseases |
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By WCM Staff on
6/11/2008 11:37 AM
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We are currently in the process of examining the winter wheat variety trials that are at Arlington, Chilton, Janesville and Lancaster for foliar fungal diseases. So far, we have completed assessments at Arlington.
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Folicur Registered with EPA for Barley and Wheat |
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By WCM Staff on
6/11/2008 11:22 AM
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Recently, EPA has approved a federal registration for FolicurÒ, tebuconazole, from Bayer CropScience LP. FolicurÒ has been approved for wheat and barley, specifically for control of Fusarium head blight (Fusarium head scab) and also rusts diseases including leaf, stripe, and stem rusts.
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Flag Leaf Emergence and Foliar Fungicides in Winter Wheat |
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By WCM Staff on
5/27/2008 11:46 AM
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Winter wheat is at or near to the flag leaf (Feekes 8) growth stage throughout the state. This is an important time to actively scout wheat fields to most effectively determine if the use of a foliar fungicide will be needed.
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Risk for Soybean Rust in Wisconsin Currently Low – May 2008 |
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By WCM Staff on
5/15/2008 11:58 AM
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Recently, we received an email asking about the risk for soybean rust in Wisconsin in 2008, especially since growers are considering altering planting plans with the wet conditions found in parts of the state. In examining the situation in the southern U.S., the current risk of soybean rust in Wisconsin is low.
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Proline Fungicide Approved for Soybean Rust and Powdery Mildew |
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By WCM Staff on
4/24/2008 12:19 PM
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Recently, EPA approved a master Section 3 label (as of 03/24/2008) for ProlineÔ Fungicide from Bayer Crop Science for use in soybean against soybean rust (Phakopsora pachyrhizi) and powdery mildew (Microsphaera diffusa). To legally use ProlineÔon soybean, growers will need to have in their possession the existing container label as well as the supplemental label that Bayer Crop Science is allowed to market.
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Soybean Disease Diagnosis at Emergence and Seedling Growth Stages |
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By WCM Staff on
4/24/2008 11:44 AM
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The 2007-2008 winter, and the early portions of the spring season, has brought substantial moisture into many parts of the state. With further rain forecasted throughout the state over the next few days and weeks, it is important to understand how early season soybean development may be compromised by several plant pathogenic fungi that cause seed rot, seedling mortality, and root and stem decay.
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Print issue files for 2007
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Crop Manager Vegetable Update
Clicking on these links will access the Wisconsin Crop Manager PDF files for 2008.
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Clicking on these links will access the Wisconsin Vegetable Crop Update PDF files for 2007.
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