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Identifying Leaf Stages in Small Grain

This publication identifies leaf stages in small grains to help with the application of postemergence-applied herbicides. Knowing the leaf stages describes the optimum treatment time that will maximize weed control and minimize crop injury.

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Incorporating Cover Crops

Science-based information and farmers use of cover crops in North Dakota are presented in this short booklet. The goal is to provide both a starting point for farmer use of cover crops and also tips to fine tune cover crops to achieve on-farm goals.

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Irrigation Water Pumps

A pump is the heart of most irrigation systems and if not maintained can use much more power than required leading to excess pumping costs and wasting electricity.

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Irrigation Water Sample Analysis

The NDSU Soil and Water Testing Laboratory has been making soil-water compatibility recommendations since the early 1960s. These recommendations are based on the electrical conductivity (EC) and sodium adsorption ratio (SAR) determined on the irrigation water and the soil series present on the land to be irrigated.

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Know Your Knapweeds

North Dakota is being threatened by three noxious weeds that could infest more acreage in the state and at a faster rate than leafy spurge. Members of this trio include spotted, diffuse, and Russian knapweed. These three knapweeds already infest more acreage than leafy spurge in Montana and Minnesota, and have been found in over 20 counties in North Dakota. Knapweeds are related to thistles and can spread even faster.

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Late Blight in Potato

Late blight is caused by the funguslike oomycete pathogen Phytophthora infestans. This potentially devastating disease can infect potato foliage and tubers at any stage of crop development.

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Leaf-feeding Weevil in Sugar Beets

A leaf-feeding weevil, Tanymecus confusus, first was observed feeding on sugar beets in the southern portion of the Red River Valley (Richland County, N.D., and Wilkin County, Minn.) in 1975. The weevil has since caused problems for growers in southern Minnesota (Big Stone, Chippewa, Lac Qui Parle and Swift counties) in 1992 and 1997, and again in Richland County of North Dakota in 2004. A related species, Tanymecus palliatus , is an occasional pest of sugar beets in Europe. Feeding injury by adult Tanymecus confusus typically occurs in small areas within sugar beet fields. Damage is occasionally severe enough to require replanting.

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Managing Lenticel Spot on potato tubers

Lenticels in potato tubers are an unsightly blemish. These blemishes may reduce marketability of tubers and be an entry point for pathogens. Learn about how lenticel spot is caused and tips on managing this disorder.

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Managing Saline Soils in North Dakota

Saline soils contain salts in great enough abundance that crop yields suffer and sometimes makes successful crop production impossible. This publication talks about testing your soil, salinity management, mapping, crop selection and tile drainage.

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Nitrogen Extenders and Additives for Field Crops

Nitrogen is lost from soil through the activity of soil bacterial transformation of ammonium to nitrate, and from nitrate, the N can be lost leaching or denitrifcation. There are chemistries available that inhibit the transformation of ammonium to nitrate, and there are also compounds that inhibit urease enzyme activity, decreasing the risk of ammonia volatility.

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