Mid-winter weed IPM

From the Georgia Center for Urban Agriculture

by Greg Huber, University of Georgia

Weeds can be a major pest of lawns and recreation fields, competing for resources and sunlight while detracting from their natural beauty.

If your spring checklist includes lawn weed management, now is the time to take a closer look at the tiny mat of weed seedlings forming in mid-winter (Jan-Feb.), especially during spells of mild weather and precipitation. The winter-weed inventory is likely to include a mix of early-stage cool-season annual and perennial weeds such as chickweed, henbit, clover, annual bluegrass, burweed, and wild garlic. One advantage of mid-winter weed scouting and management is that many weeds are in the early growth stages and can be effectively controlled by herbicide treatments. In addition, warm-season turfgrasses such as bermudagrass and zoysiagrass are dormant and less susceptible to herbicide injury than during spring green up. Mid-winter is an excellent time to scout for cool-season weed species and get an early jump on management while conditions are favorable. Continue reading

Weeds as indicators of lawn problems

From the Homeowners’ Column  at University of Illinois Extension

One person’s weed is another person’s wildflower. A weed is just a plant out of place. We have all felt like weeds at times. A rose in a strawberry patch is a weed. The optimist’s definition of a weed is a plant whose virtues are yet to be discovered. Weeds are just plants having to deal with an unhappy human. Weeds draw scorn, particularly in lawn areas. It is impractical to expect our lawns to be totally weed free all of the time. But according to Tom Voigt, U of I turf specialist, large numbers of weeds in a lawn can indicate certain problems such as:

  • too much traffic
  • improper lawn species selection
  • too much shade
  • unfavorable soil conditions
  • poor lawn management techniques.

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Weed resistance becoming a problem in Southeast wheat crop

The Carolinas and Virginia planted an extra 250,000 acres of wheat this past fall, compared to the fall of 2011 to take advantage of continued good prices for wheat and reflective of continued high prices for soybeans that can be planted in a double-crop/double-value economic scenario.

Getting wheat planted in the fall came with a few hitches, starting with finding enough seed in the desired varieties. Less than optimum seed supplies in the fall could have some yield-limiting consequences when wheat is harvested during May and June in the region.

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