IC-498 (7) -- April 23, 2007

Plant Diseases

Winter annual weeds and SCN: What's the connection?

Could reproduction on winter annuals increase SCN populations?
Crop Production

Adjust planters when working in wetter soil

Wet soils are easily compacted.
Weed Management

UAN and preemergence herbicide applications on emerged corn

UAN may cause leaf burn, loss of leaves and reduced growth.
Insects and Mites

Alfalfa weevil and the hard freeze

Weevils may have been hit hard.
Plant Diseases

Cool, wet spring favors alfalfa foliar diseases

High levels of foliar diseases in May can cause early defoliation.
Crop Production

Residue removal and potential environmental consequences

Loss of residue can accelerate soil organic matter loss and more.
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Some of the articles contain pesticide recommendations that are subject to change at any time. The recommendations provided in these materials should be used only as a guide. It is always the pesticide applicator's responsibility, by law, to read and follow all current label directions for the specific pesticide being used. Due to constantly changing labels and product registration, some of the recommendations given in these writings may no longer be legal by the time you read them. If any information in these recommendations disagrees with the label, the recommendation must be disregarded. No endorsement is intended for products mentioned, nor is criticism meant for products not mentioned. The article's author, Iowa State University and Iowa State University Extension assume no liability resulting from the use of these recommendations.