Crop & Pest Report




Scouting and Weed Identification are the Foundation of the Weeds Management Strategy (05/12/16)

Weed identification was an important topic of emphasis during the winter meeting season.

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Glyphosate in Mixes with other Postemergence Herbicides (05/12/16)

Glyphosate is a systemic herbicide that performs best when applied in larger spray droplets and at lower water volumes (5-10 gallon per acre) during the heat and humidity of the day to increase herbicide absorption into the plant.

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A Weeds Management Strategy may or may not Include Soil-Applied Herbicides (05/05/16)

A survey of weed control and production practices in sugarbeet has been compiled annually since 1968.

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Warrant Ultra in Soybean (05/05/16)

You may have read about Warrant Ultra, a premix of encapsulated acetochlor and fomesafen (you may know of it as Reflex).

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Review Your Weeds Management Strategy Before and at Harvest (08/27/15)

Wheat has been harvested and sugarbeet farmers are participating in the preharvest campaign. And corn and soybean harvest will be right around the corner.

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Waterhemp Identified Along the Red River, East of Grafton, ND (08/13/15)

It just keeps moving north! I walked along the Red River and a field adjacent to the Red River near state road 17, east of Grafton, ND and positively identified waterhemp last week.

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Waterhemp Increasing in North Dakota (08/13/15)

Even though much attention has been given to early detection of Palmer amaranth we should not forget about the ‘lesser evil’ – waterhemp.

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Foxtail Barley Control (08/13/15)

At this time of the year foxtail barley is in full view along roads, in ditches and on field perimeters.

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Controlling Weeds in Fields Following Small Grains Harvest (08/06/15)

My travels took me to the southern end of the Red River Valley on Tuesday, May 4. I was impressed with the great number of combines in fields harvesting wheat and barley.

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Growth Regulator Herbicide Symptoms on Soybean (08/06/15)

Samples have come in showing classic growth regulator (GR) symptoms on soybean.

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Nano Adjuvants (07/30/15)

Beginning in late winter and early spring I was contacted by many folks in the region about media adds of adjuvants that contain nano-materials.

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DEET as an Herbicide (07/30/15)

Question: I have an interesting question for you. Word around the local coffee table, is that using a 40% Deet insect repellent kills weeds… A producer is “experimenting” with it in his lawn and he showed me that it does work. It killed the dandelions, lambsquarters, common mallow, etc. The grass surrounding the weeds looks like it was killed too. However, my question is, will anything grow back at all after it has been sprayed with a 40% Deet?! Is it the Deet that’s killing the plant? Any thoughts, comments?

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Male Palmer Amaranth Plants (07/30/15)

In the last issue of the NDSU Crop and Pest Report (#12) I included information on Palmer amaranth. In the article I indicated the following: Below are reasons why it is being called “Satan” and why growers should quickly destroy any plants found. #7. Female plants can grow to more than 10 feet tall with a 5-6 inch stem girth and seed heads more than 1 foot in length. Male plants are small and generally non-competitive.

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Waterhemp is Moving North in the Red River Valley (07/23/15)

I stated in winter meetings the ‘waterhemp line’ or fields where waterhemp could be scouted for and found in corn, sugarbeet, soybean or small grains fields was somewhere between Wahpeton and Fargo in 2014.

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Palmer Amaranth – A Plant Form of Cancer (07/23/15)

In the very small chance that readers have not heard of Palmer amaranth nor heard of the devastation it can inflict, here is a summary:

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Foxtail Barley Control (07/23/15)

The following information is from email correspondence with Dr. Rod Lym, NDSU Weed Scientist. Question: What are some good recommendations for control of foxtail barley in pasture - what about tips when applying Plateau and is this a good option?

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Managing Weeds on the Edges of Fields (07/16/15)

I notice road ditches and edges of fields are beginning to dry out following what seems to be very regular precipitation in May, June and early July.

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Hydrogen Peroxide as a Water Conditioner Adjuvant (07/16/15)

Question: Some growers are looking at using industrial grade hydrogen peroxide as a water conditioner to replace ammonium sulfate under the assumption that it will “fix” hard water and offer uptake into the plant. They will be mixing it (at a 1 quart use rate) with the herbicides, insecticides, and fungicides in all their crops except for wheat. One grower in particular has been using industrial grade hydrogen peroxide for a few years and says he’s seen better herbicide efficacy. He also uses it as a “fungicide” in his wheat at heading and for cercospora control in sugarbeets. Is there any validity to these statements?

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Difference in NIS Brands? (07/16/15)

Question: Is there a difference in the quality of adjuvant between X NIS and Y NIS? I noticed that you listed both of them in the weed guide as an NIS. Does that mean that they are similar in activity or just classified as an NIS by the company?

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Drift from Glyphosate (07/16/15)

The following is an email response from Dr. Kirk Howatt, NDSU Weed Scientist, to a question received about assessing glyphosate damage:

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