IC-498(18) -- July 9, 2007

Plant Diseases

Sample now for most corn nematodes

Includes photos of how to sample.
Insects and Mites

Soybean aphids exceed the economic threshold in northeast Iowa

Includes soybean aphid population trends since 2002.
Weed Management

Weed watch: Wild parsnip and poison hemlock

Both can pose health hazards.
Crop Production

Time is running out for planting an "emergency" forage crop

Adequate soil moisture and regular rainfall are needed.
Crop Production

Indicators point to hay supply deficits in Iowa

First-cutting yields down 20 to 50 percent.
Plant Diseases

July soybean disease scouting

What you might find in the field.
Degree Days

July starts warm and dry

Degree day information for Iowa.
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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.