184 articles From: "2019"

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Near term, Sunday looks like the next most likely precipitation event around the state.  The active pattern seems to continue, with chances of rain continuing about every 3-4 days.  Meanwhile, temperatures begin to trend more summer-like, with 80 degree days coming statewide, and likelihood for above average temperatures in the 6-10 day outlook high (see map, cpc.ncep.noaa.gov). Important to note:  high temperatures and excessive moisture favor many different kinds of disease and insect development.  Scout any crops that have been planted for disease development or infestation and act accordingly.  Contact your local Purdue Extension office for help in identifying problems or economic thresholds for treatment.    




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The risk of damaging spring frost events is one of the downsides to planting corn earlier than normal, but is one growers often accept when early spring field conditions are otherwise suitable for planting. However, the threat of low temperatures in late May or early June also raises the specter of frost or low temperature damage to young corn plants, regardless of planting date. Early morning temperatures in the 30so(F) coupled with clear calm conditions overnight certainly are favorable for frost formation on exposed surfaces, including leaves of young corn plants. In other words, temperatures do not need to drop to 32oF or cooler in order for frost to form. When significant frost develops on young corn plants, it is tempting to jump to the logical conclusion that significant plant mortality will soon follow. However, frost by itself is not a guaranteed “kiss of death” for young corn plants. What[Read More…]





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I have heard that wheat is starting to flower in parts of southern Indiana, and the Fusarium risk forecast is still red for most of the state indicating a high-risk potential for infection. Recent weather conditions will only continue to promote the high risk.


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Moth flights for both black cutworm and armyworm have been impressive this spring. Unworked/untreated fields are plentiful, and so is the plant life, meaning that there has been no shortage of egg-laying opportunities for these pests. Once soils dry, there will be no luxury of time to prevent a green-bridge, that is to starve the small larvae before they switch from feeding on the dying weeds/cover crops to the emerging crop. So, should one be tempted to be proactive and add some “cheap” insecticide in with the burn-down herbicides. A few factors to consider: First, seed-applied insecticides and many varieties of Bt-traited corn offer some suppression of black cutworm. The systemic activity of the seed-applied insecticide, and/or the protein production of the Bt-corn are optimal when the corn seedling is actively growing, not so much when corn is stressed. Their performance against larger larvae, >0.5”, is greatly reduced, meaning the[Read More…]



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