Crops

Local Highlights

Joel DeJong photo
September 27, 2019

Check your fields to rank harvest order priority. As fields approach black layer it’s a good time to check for stalk rot. If a field has about 15% stalk rot or more, the risk of significant lodging is high enough to justify harvesting the field on the early side. So at initial R6 stage (black layer), test stalk firmness by pinching the lower internodes with thumb and forefinger. Healthy stalks are firm and cannot be compressed. If a stalk can be compressed or feels soft, it is rotted and is a good candidate for lodging. Randomly check about 100 plants per field for a good assessment of conditions

September 24, 2019

The Iowa State University Women in Agronomy Program mission is to givewomen knowledge and confidence when communicating with spouse, farming partner, Ag retailer or tenants.  Fall is the time of the year where Iowa farmers take the time to evaluate the prior year’s yields from corn and soybeans. 

Joel DeJong photo
August 30, 2019

Weather UpdateFor your information I thought I would again show you the rain and growing degree data compared to normal since May 15, found with other details at this website. Remember, you can change the beginning and end dates and see a different date range if you wish. 

June 25, 2019

In-season plant tissue testing can be useful in diagnosing nutrient deficiencies in field crops, but it must be used with caution. Extra care is needed this year given the unusual crop planting and growing conditions.

image of corn rootworm
June 19, 2019

Corn rootworm egg hatch in Iowa typically occurs from late May to the middle of June, with an average peak hatching date of June 6 in central Iowa. In 2019, the average hatching date will be behind the average, due to cool spring temperatures. Development is driven by soil temperature and measured by growing degree days. Research suggests about 50% of egg hatch occurs between 684-767 accumulated degree days (base 52°F, soil).

Agriculture and Natural Resources has many resources to help Iowans. Get a list of them all here.

Statewide Resources

  • Information that protects and enhances the economic value of Iowa’s agriculture and horticulture, by educating growers and the general public about plant diseases and science.

  • Information on Pesticide Applicator Training, Integrated Pest Management, and related environmental programs.

  • The Plant and Insect Diagnostic Clinic provides diagnosis of plant problems (plant diseases, insect damage, and assessment of herbicide damage) and the identification of insects and weeds from the field, garden, and home.

  • Providing direct, unbiased comparisons of corn hybrids and soybean varieties, in a number of different environments.

  • Daily 4” soil temperatures for Iowa counties to assist with crop management decisions and nutrient applications.

  • Educating producers, consumers and policy makers in the research and extension activities in organic agriculture both on-farm and at Iowa State University.

  • The Iowa Soil and Land Use site provides data related to the agricultural and non-agricultural uses of Iowa land to help you determine the right use for your soil.

  • Entryway to crop production, soil and nutrient management, weed management, and ag weather information.

  • Insecticide evaluation reports and information on specific pests of economic significance to Iowa crop production.

  • Grain handling, agricultural machine design, precision farming systems, soil tillage and management, and agricultural drainage.

  • Comprehensive information on manure management, research and application for Iowa.

  • Your source for comprehensive crop production news and information from Iowa State University specialists and agronomists.

  • Iowa Learning Farms is building a Culture of Conservation, calling attention to the importance of improved water and soil quality through conservation farming practices.

  • Knowledge and information that improves the efficiency of traditional commodity grain markets and assists emerging markets for user-specific grains.

  • Agricultural economics and business resources to help make sound management decisions for your business or farming operation.

  • Find resources on soil nutrients, nutrient management, soil sampling and testing, interpretations and recommendations.

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