Crop & Pest Report

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Crop & Pest Report

wthr.aa.Corn

Weather/Crop Phenology Maps (05/21/15)

Maps detailing corn accumulated daily growing days, percent normal rainfall, departure from normal average air temperature, and accumulated wheat growing degree days.

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Crop Management Field School Announcement (05/21/15)

NDSU Extension Service’s annual crop management field school will be offered Thursday, June 18, from 9 a.m. to 3:30 p.m. at the Carrington Research Extension Center (CREC).

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South Central ND (05/21/15)

Information from the South Central region of North Dakota.

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Northeast ND (05/21/15)

Information from the Northeast region of North Dakota.

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North Central ND (05/21/15)

Information from the North Central region of North Dakota.

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Keep Stored Grain Cool and Dry During Summer (05/21/15)

Stored grain needs to be cool and dry during the summer. Keeping stored grain cool helps reduce insect infestations and mold growth. Cold or cool grain has been safely stored through the summer for many years.

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Weed Control in Dry Beans (05/21/15)

The following is a question from a consultant in NE. The answer can apply to dry bean growers in ND.

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Conversion of Dry to Wet Metribuzin (05/21/15)

Question: I was wondering if you could help me clarify some questions that we have been getting from crop consultants and retailers lately. There is a trend of growers wanting to use liquid metribuzin instead of dry formulations due to ease of handling and sprayer cleanout issues. I have seen a lot of confusion in the field about what the conversion of dry formulations to the liquid equivalent is.

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Control of Cover Crops (05/21/15)

Question: I am wondering if you have done any work on residual control of turnips and radish planted as a cover crop. We had several areas planted last fall and with the dry weather they did not germinate. I am wondering what by best option for residual control in soybeans will be. I am thinking Authority Assist.

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Rivers to Nowhere (05/21/15)

Now is a good time before bustling back to the field to drive around the fields and look, and take pictures and make notes of ditches that go nowhere.

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Sulfur Losses in Rainfall (05/21/15)

The high rainfall over the past week has resulted in S losses, particularly in sandier soils, especially on hilltops and slopes.

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Nitrogen Supplements (05/21/15)

There are three reasons why growers might need to consider supplemental N fertilizer a little later on in the growing season.

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Small Grains Disease Forecasting Model Website Activated (05/21/15)

After several days of precipitation and with cool weather in the forecast, this is a good time to start scouting winter wheat and spring wheat for fungal leaf spots.

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Tracking Waterhemp Emergence (05/21/15)

I am trying to forecast waterhemp emergence using growing degree days. You can help me to refine the model by indicating when you first see waterhemp.

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Plan to Spray Weeds Once Sugarbeet Fields Dry (05/21/15)

I suspect everyone benefited from last week’s precipitation. The rainfall was crucial for early season growth and development but has prevented us from working in the field for up to fourteen days in some locations.

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Frost Damage in Small Grains and Corn (05/21/15)

Air temperatures recently dipped below freezing in much of North Dakota. Since most of the small grains had been planted and emerged and some of the corn, there is concern about the type of damage this cold weather may have caused.

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Canola and Frost Damage (05/21/15)

During the middle of May 2015, early morning frost occurred in many parts of North Dakota. The temperature at which freezing injury may take place in canola varies with the growth stage of the plant, soil moisture content, and the length of time the temperature is below freezing.

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Good Bug Corner (05/21/15)

This week’s featured group is beneficial wasps (also called parasitoids) that attack and kill eggs and immature stages of many insect pests. Parasitoids are described as tiny wasps in the insect order Hymenoptera and include many different families (Braconidae and Ichneumonidae, for example).

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Watch Out for these Invasive Insect Pests (05/21/15)

Since the cold temperatures have slowed insect pest activity this past week, I thought this would be a good opportunity to update you on the status of a few invasive insect pests of field crops. Please look for these invasive insect pests when you are out scouting fields or around your home.

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Aster Leafhoppers in Winter Wheat (05/14/15)

Aster leafhoppers and other species of leafhoppers were observed in large numbers in a winter wheat field near Aneta in Nelson County (source: Huso Crop Consulting).

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