Weed Science

These guides are technical bulletins that provide technical information on managing key weeds in agronomic crops and commercial vegetables. Bulletins include control of Delaware’s noxious weeds. Often the information is specific to Delaware or the mid-Atlantic Region.

Learn more about the guide in the video below.

Delaware Soybean Board Reports

• 2016: Herbicide-Resistant Weed Management for No-Till and Double-Cropped Soybeans
• 2015: Evaluating Herbicide Tankmixtures for Liberty-Link Soybeans
• 2014: Management of Palmer Amaranth in Soybeans

Additional weed management reports

• Integrating Cover Crops for Weed Management in Plasticulture Systems
• 2018: Authority MTZ for processing tomatoes
• 2016: Alternative compounds for preemergence weed control
• 2016: Management of herbicide-resistant common ragweed in soybeans
• 2016: Reflex in pumpkins
• 2016: Control of Problem Weeds in Small Grains
• 2015: Lima bean safety with PPO herbicides
• 2015: Evaluation of potential herbicides for sweet potatoes
• 2014: Japanese knotweed management along ditchbanks
• 2014: Potential Herbicides for Row Middles in Plasticulture Melons

Report books prior to years available online here are available in PDF format upon request. For a copy to be emailed, please contact us and specify the year(s) you would like emailed.

Series of publications developed by Extension Weed Specialists on glyphosate and key weed species.

• GWC-1 Facts About Glyphosate-Resistant Weeds

• GWC-2 Understanding Glyphosate to Increase Performance

• GWC-9 Biology and Management of Horseweed

• GWC-10 Biology and Management of Wild Buckwheat

• GWC-11 Biology and Management of Common Lambsquarters

• GWC-12 Biology and Management of Giant Ragweed

• GWC-13 Biology and Management of Waterhemp

Studies on the biology and ecology of key weed species in the Northeastern U.S.

• Large and Small Crabgrass

• Yellow and Giant Foxtail

• Barnyardgrass

• Galinsoga

• Horsenettle

• Yellow Nutsedge

• Common Purslane

• Quackgrass

• Common Ragweed
  

• Phillips Manual on Grass Weed Identification

• Phillips Manual: Weeds of the Northeast- Identification by Basal-Leaf Characteristics

Annual results of the UD conducted weed control demonstrations and trials. Trials are conducted at the UD’s Thurman Adams Research Farm (UD-REC) and at various on-farm locations throughout Delaware. Compilation of these trials is the basis of UD Weed Management Recommendations. Extension recommendations are seldom made based on a single trial.

• 2019 Delaware Weed Control Results
• 2018 Delaware Weed Control Results
• 2017 Delaware Weed Control Results
• 2016 Delaware Weed Control Results
• 2015 Delaware Weed Control Results
  
• 2014 Delaware Weed Control Results
  
• 2013 Delaware Weed Control Results
  
• 2012 Delaware Weed Control Results
  
• 2011 Delaware Weed Control Results

Ppresentations on various topics with information specific to Delaware or the mid-Atlantic Region.

• Weed Control for Snap Beans
• Palmer Amaranth vs Redroot Pigweed
• Weed Management for Sweet Corn and Lima Beans
• Weed Management for Vine Crops
• Winter Weeds - names and photos