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Revised Soil Fertility Recommendations for Corn

corn field1

Fertilizer recommendations for corn were published about 40 years ago and have changed little since then. However, during the past 40 years, yield expectations have at least doubled from about 80 to more than 200 bushels per acre in many fields. Tillage practices and the hybrids planted also have changed. The changes from previous corn fertility recommendations are primarily the result of recent assessments of corn yield responses to nitrogen through field experiments using modern hybrids and conditions.

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Rust Diseases Spotted

wheat leaf rustMany rust diseases have been spotted in fields during the last few weeks. Some of the most prevalent are common corn rust, wheat leaf rust, wheat stripe rust, oat crown rust, sunflower rust, safflower rust and rust on vetch. Rusts are caused by a group of fungal pathogens with complex life cycles.

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Glyphosate as a Preharvest Aid

winter wheatWinter wheat is approaching maturity and early planted barley is not far behind, so harvest time will soon be upon us. Glyphosate can be used as a preharvest aid in small grains to control green weeds and to speed up uniform ripening of the crop. Glyphosate also has been shown to reduce the amount of time that it takes for a crop to reach harvest moisture if conditions are not favorable for drying.

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Small Grain Disease Forecasting Model

wheat scab

The NDSU small grain disease forecasting model website predicts the risk of infection for tan spot, septoria leaf blotch and leaf rust of wheat, as well as Fusarium head blight (scab).  The risk of infection is based on weather data from North Dakota Agricultural Weather Network locations. A user of the website choses the NDAWN site of interest and the crop growth stage to get the forecast. 

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Consider Cover Crops on Prevented Plant Ground

PP Land

With prevented planting (PP) more common throughout North Dakota this year, using cover crops to prepare the land for next year is a desirable option.  Cover crops can be single plant species or a mixture of several species – it depends on your goals.  The obvious reason for using cover crops in PP situations is to use up excess water, but other reasons and benefits of cover crop use should be noted. 

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NDSU Research Extension Center Field Days

field days

It is that time of year when NDSU Research Extension Centers across the state hold their annual field days. Field days are a chance for researchers and Extension faculty to share information on topics such as: ■ New crop varieties ■ Better production methods ■ Weed control ■ Soil health ■ Grazing intensity ■ Cattle nutrition and genetic disorders ■ Irrigation ■ Manure management ■ Precision agriculture ■ Biofuel development

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Yellow Wheat

Nitrogen deficiency in wheat.png

During a wet spring, wheat plants may become yellow. This is usually due to a nitrogen deficiency, but not always. If the plants are examined when the yellowing begins to develop, it is often possible to determine if the deficiency is due to a shortage of nitrogen, sulfur or iron by the appearance and location of the symptoms on the plant.

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Delayed Wheat Planting

wheat in sky

In an effort to get crops in quickly, small grain growers may be thinking about forgoing seed treatments and plant a higher population instead.  How much of a risk are you willing to take in choosing fungicide seed treatments versus high plant populations? Knowledge of the land and yield expectations will help decide the type of risks you are willing to take.

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Sign Up for Crop and Pest Report

conservation tillEach season brings new challenges and pest problems in crop production. One way to stay informed and effectively manage any problem is to sign up for the weekly “Crop and Pest Report.” Each issue from May to September contains valuable information about insect and disease problems, pest alerts, integrated pest management strategies, pesticide updates, agronomy and fertility issues, horticulture problems, reports from the NDSU Plant Diagnostic Laboratory and a weather outlook. Also, please "like" the "Crop and Pest Report" on Facebook.

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Noxious and Troublesome Weeds

thistle

Noxious weeds tend to grow aggressively, multiply quickly without natural controls, and adversely affect native habitats, croplands and fauna. Most noxious weeds were introduced into an ecosystem by ignorance, mismanagement or accident. Occasionally some noxious weeds are native to an area.

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