Broadleaf Weed Control

Weed populations that exceed their economic threshold can reduce crop yield while harboring insects, plant diseases, plus causing irrigation and harvesting problems. Mechanical weed management practices, such as tillage operations are effective in crop rows and field borders. Herbicides can reduce the number of tillage operations and can be used where cultivation is not possible, such as between plants or in solid-seeded crops. With increasing fuel and labor costs, herbicides are often more economical that other methods of weed control.

ASC Farmington weed science research encompasses herbicide application for broadleaf weed control of redroot pigweed, prostrate pigweed, black nightshade, common lambsquarters and Russian thistle in crops, such as corn, dry beans and sunflowers. Research results including herbicide applications rates, stand counts and crop injury are published annually in the NMSU ASC Farmington Annual Progress Reports.

Broadleaf Weed Control in Field Corn

Many herbicides are approved for use on agronomic crops grown on medium and fine-textured, high organic soils. However, little information is available regarding their effectiveness and safety on low-organic, course-textured soils that are common to northwestern New Mexico.

A series of Pest Control in Crops Grown in Northwestern New Mexico Annual Data Reports are provided for your convenience.

Broadleaf Weed Control in Alfalfa

A five-year study on spring-seeded alfalfa (1999-2003) was conducted at the Agricultural Science Center at Farmington to evaluate postemergence herbicides for control of redroot and prostrate pigweed, black nightshade, common lambsquarters, and Russian thistle.

A link to the Broadleaf Weed Control in Spring-Seeded Alfalfa, 1999-2003 Bulletin 795 is provided for your convenience.