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Weeds

Identification and Control of INVASIVE AND TROUBLESOME WEEDS in North Dakota (W1411 Revised )

This publication includes photos of all North Dakota state and county listed noxious weeds as well as "troublesome" plants such as poison ivy. Methods to identify and control each weed are discussed and why the plant is a concern in the state is explained. This is a major revision since the first publication in 2010.

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A Guide to North Dakota Noxious and Troublesome Weeds (W1691 Revised )

This publication includes photos of all North Dakota state and county listed noxious weeds as well as "troublesome" plants such as poison ivy. Methods to identify and control each weed are discussed and why the plant is a concern in the state is explained. This is a pocket sized version of the publications W1411, Identification and Control of Invasive and Troublesome Weeds in North Dakota.

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The Thistles of North Dakota - W1120

Thistles in agriculture have a reputation as a sign of untidiness and neglect, and are often found on good ground not properly cared for. However, this unfortunate characteristic is only true of a few invasive species and is not accurate for the vast majority of native thistles which have many useful traits.

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Identification and Control of Purple Loosestrife (Lythrum salicaria L.) - W1132

Purple loosestrife, a beautiful garden plant with an aggressive nature, was first introduced into North America in the early 1800s. The plant was sold in North Dakota by its genus name Lythrum for at least 50 years. Lythrum plants were brought to North Dakota for flower gardens because of their striking color, ease of growth, winter hardiness, and lack of insect or disease problems. The garden varieties of purple loosestrife were sold by many cultivar names including Morden Pink, Drop-more Purple, and Morden Gleam. These garden cultivars were thought to be sterile but have now been shown to cross-pollinate with the wild Lythrum type and sometimes with other Lythrum cultivars.

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Houndstongue (Cynoglossum officinale L.) Identification and Control - Stop the Spread - W1307

Houndstongue is a biennial, poisonous herb that is native to Eurasia. The plant is a member of the Borage family, which includes more commonly known plants such as Virginia bluebells, forget-me-nots and the fiddlenecks. Houndstongue commonly is found in disturbed areas, including roadsides and trails, and in pasture and woodlands following soil disturbance or overgrazing.

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Know Your Knapweeds - W1146

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

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Documentation for Suspected Herbicide Drift Damage (WC751 (Revised)

Herbicide drift to nontarget plants can cause damage sufficient to result in a significant monetary loss.

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Organic Management of Canada Thistle (W1860)

This publication is a description of management options and methods for Canada thistle.

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Bringing Land in CRP into Crop Production or Grazing

Bringing Land in the Conservation Reserve Program Back Into Crop Production or Grazing - A1364

This publication provides guidelines for farmers wishing to convert CRP into crop production.

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ND Weed Control Guide

2016 Weed Control Guide - W253

The information in this guide provides a summary of herbicide uses in crops grown in North Dakota and is based on federal and state herbicide labels, research at ND Ag. Experiment Stations, and information from the North Dakota Department of Agriculture.

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Pesticide Use 2012

Pesticide Use and Pest Management Practices in ND, 2012 - W1711

This is the ninth major account of pesticide usage inNorth Dakota and describes pesticide usage onagricultural land in 2012. The information is derived from a comprehensive survey of North Dakota farm operators.

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Soybean Production Guide

Soybean Production Field Guide for North Dakota and Northwestern Minnesota - A1172

The production guide will provide useful information to assist you in making timely management decisions.

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Spotted Knapweed

Spotted Knapweed (Centaurea maculosa Lam.) - W842

Spotted knapweed is an aggressive, introduced weed species that rapidly invades pasture, rangeland and fallow land and causes a serious decline in forage and crop production. The weed is a prolific seed producer with 1000 or more seeds per plant. Seed remains viable in the soil five years or more, so infestations may occur a number of years after vegetative plants have been eliminated. Spotted knapweed has few natural enemies and is consumed by livestock only when other vegetation is unavailable. The plant releases a toxin that reduces growth of forage species. Areas heavily infested with spotted knapweed often must be reseeded once the plant is controlled.

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Perennial and Biennial Thistle Control

Perennial and Biennial Thistle Control - W799

Thistles are especially troublesome following cool, wet summers and falls, when seed production and seedling establishment are high. An integrated weed control program that combines chemical, cultural (such as crop rotation or grass competition), mechanical and biological methods is most likely to be successful.

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Leafy Spurge Control Using Flea Beetles

Leafy Spurge Control Using Flea Beetles - W1183

Leafy spurge is an exotic perennial weed that infests over 800,000 acres in North Dakota. Although leafy spurge can be successfully controlled with herbicides, treating large acreages is not cost-effective. In fact, approximately 40 percent of the leafy spurge infested rangeland has a carrying capacity below the herbicide cost break-even point. Using biological agents to control leafy spurge has become an economic alternative in many locations in the state.

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Integrated Management of Leafy Spurge

Integrated Management of Leafy Spurge - W866

Leafy spurge is the most difficult noxious weed to control in North Dakota and infests all 53 counties in a variety of environments. Leafy spurge is found in pasture, rangeland, cropland, roadsides, shelterbelts, and other non-cultivated areas. Cultivation will control leafy spurge in conventional cropland, but the weed can become the dominant species in reduced-till cropland, pas-ture, and rangeland if not controlled.

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Dry Bean Production Guide

Dry Bean Production Guide - A1133

Dry bean is a food crop that requires the producers to provide special cultural management and attention. Proper management is essential from cultivar selection, field selection and planting through harvest, plus marketing for maximum profitability. This guide helps producers meet those production challenges.

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Biennial Wormwood

Biology and Management of Biennial Wormwood - W1322

Biennial wormwood is an aggressive and prolific seed-producing plant that has become a problem mainly in soybean and dry edible bean production areas of Minnesota, North Dakota and South Dakota. Biennial wormwood, as its name infers, was primarily biennial when the species fi rst was classified, but weedy cropland biotypes of biennial wormwood are annual plants. Many factors, such as season-long emergence, prevalence in moist environments, adaptation to all tillage systems, tolerance to commonly used soil-applied and postemergence herbicides, and misidentification of biennial wormwood as common ragweed, contribute to increased biennial wormwood infestations. Some herbicides used to control common ragweed do not control biennial wormwood.

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Effect of Glyphosate on Potatoes

Effect of Glyphosate on Potatoes - A1642

Potatoes can have reduced yield and quality in the growing season when affected by glyphosate. Furthermore, seed potatoes can store glyphosate residues until the following year and when planted they can have emergence problems that ultimately can reduced yield.

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Dry Bean Grower Survey

2012 Dry Bean Grower Survey of Production, Pest Problems and Pesticde Use in Minnesota and North Dakota - E1640

The 2012 dry bean grower survey is the 23rd annual assessment of varieties grown, pest problems, pesticide use and grower practices of the Northarvest Bean Growers Association, an association of dry edible bean growers in Minnesota and North Dakota.

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