Information on weed identification and control, including catsear, marestail, purple loosestrife, pokeweed, pigweed, poison ivy, crabgrass, hemlock, purslane and multiflora rose. Tips on various herbicides and integrated pest management.
This school will provide educational information and pesticide license credits for working with Christmas trees, landscapes, and turfgrass.
World renowned speakers, and over 30 commercial exhibitors, will be present for this day-long Green Industry extravaganza.
Catsear (Hypochaeris radicata or Hypochoeris radicata), also known as flatweed, cat's ear or false dandelion, is a perennial, low-lying herb often found in lawn.
Recently, some folks pulled into the local nursery, asking about the pretty pink flowering plants that were blooming along the fields and roadsides.
Since the discovery of triazine resistance in the United States occurred in the late 1960s, more than 50 species of weeds have developed weed resistance problems.
Johnsongrass and shattercane are closely related grass weeds that are troublesome and persistent in row crops, where they reduce yield and quality.
Wirestem muhly (Muhlenbergia frondosa) is a perennial grass species that can be problematic in conservation tillage production systems throughout Pennsylvania and the Northeast.
This weed field trials report is a summary of the 2016 herbicide trials conducted in corn soybean, and other field crops by the Department of Plant Science at Penn State.
This weed field trials report is a summary of the 2015 herbicide trials conducted in corn soybean, and other field crops by the Department of Plant Science at Penn State.
Quackgrass is a widespread, persistent, cool-season, grassy weed found in Pennsylvania row and forage crops. This competitive perennial grass can reduce crop yields up to 95 percent.
How late can an herbicide application be made in the fall and still be effective? We provide comments about controlling perennials and winter annual weeds.
Best management practices for resistant marestail (horseweed)
Marestail (horseweed) resistant to glyphosate and Group 2 herbicides is present in PA and presents management challenges.
Weeds are plants whose undesirable qualities outweigh their good points.
Yellow woodsorrel (Oxalis stricta) has foliage (composed of three leaflets) that resembles white clover or black medic.