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Latest Weed Stories

2009-11-11 17:23:48

Ability of jewelweed to recognize 'relatives' from 'strangers' helps shift resources for growth The concept of altruism has long been debated in philosophical circles, and more recently, evolutionary biologists have joined the debate. From the perspective of natural selection, altruism may have evolved because any action that improves the likelihood of a relative's survival and reproduction increases the chance of an individual's DNA being passed on. Social behavior, kin recognition, and...

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2009-11-04 11:23:04

2-year study shows pine needle mulch most effective Research scientists at Nova Scotia Agricultural College have been working steadily to find effective organic methods to control weeds in cultivated blueberry crops. One resulting study, published in a recent issue of the ASHS journal HortScience, reported on the efficacy of three organic mulches used on highbush blueberry (HBB) produced under organic production practices. The research team determined that the major factor influencing weed...

2009-10-07 09:11:37

Study explores how farmers' practice affects role of gene flow between cultivated sorghum and its weedy relatives Family can be a blessing and a curse, and never more so than in the case of crop plants and their wild relatives. These wild and weedy relatives harbor unique and beneficial genes that may no longer be found in their cultivated siblings, but they also harbor genetic traits that farmers have intentionally selected against in their domesticated brethren. The close genetic...

2009-09-15 06:00:00

RESEARCH TRIANGLE PARK, N.C., Sept. 15 /PRNewswire/ -- BASF announced today the Environmental Protection Agency (EPA) registration of a new active ingredient, Kixor(R) herbicide, for use on a wide range of crops and effective on more than 70 broadleaf weeds. Starting this fall, four formulations Powered by Kixor herbicide -- Sharpen(TM) herbicide, OpTill(TM) herbicide, Integrity(TM) herbicide and Treevix(TM) herbicide -- will be available to help growers tackle today's broadleaf weed...

2009-09-09 14:54:54

Michigan State University scientists say they've found pesticide-free mulched maple and oak leaves can reduce the number of dandelions on Kentucky bluegrass. The objectives of our research were to quantify the effectiveness of four maple and one oak species leaf mulch as an organic broadleaf weed control method in an established Kentucky bluegrass turfgrass stand, then to identify specific maple species that provide effective broadleaf weed control, said Alexander Kowalewski of the...

2009-09-08 08:57:31

Mulched maple and oak leaves reduce dandelions in established Kentucky bluegrass Spring and summer often find homeowners out in their yards, busily attempting to control the onslaught of dandelions in a quest for green, weed-free lawns. Dandelions, broadleaf perennial plants that have a questionable reputation as lawn wreckers, can make even the most patient gardener reach for chemical weed killers to control the onslaught of the ubiquitous weeds. Now, the answer to an environmentally...

2009-08-13 12:56:00

MEMPHIS, Tenn., Aug. 13 /PRNewswire/ -- By investing a small amount of time and energy now, you can improve your lawn's good looks for fall and prime it for a green and glorious spring. Both warm and cool season grasses common in the U.S. can suffer substantial damage over the winter without proper care in the fall. (Logo: http://www.newscom.com/cgi-bin/prnh/20090217/CL71531LOGO ) The experts at TruGreen, the largest professional lawn care services provider in the United States,...

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2009-07-30 10:30:00

Researchers at the University of Leicester have paved the way for the first ever use in Europe of an insect (biocontrol) to combat an invasive plant species in Britain.University of Leicester biologists established that the Japanese Knotweed in Britain was one the biggest females in the world- a clone of cuttings brought into Britain in the 1850s. Costs of controlling it in Britain have been put at £1.5 billion.Defra's Food and Environment Research Agency (Fera) has now launched a...

2009-07-15 10:15:49

A U.S. agriculture scientist says using a diverse herbicide application strategy may hike production costs, but will reduce herbicide-resistant weeds. A Purdue University study showed excess usage of glyphosate-resistant crops has led to weeds, such as marestail, that are also resistant to glyphosate, the herbicide used in Roundup. But, Purdue Professor of weed science Bill Johnson said changing management practices can result in nearly eliminating resistant marestail and its viable seeds in...

2009-05-22 15:56:00

Noxious Weed Found in Forward Township, Evans City HARRISBURG, Pa., May 22 /PRNewswire-USNewswire/ -- The Pennsylvania Department of Agriculture is warning residents of Forward Township in Evans City, Butler County, that Giant Hogweed, a noxious and invasive weed that can cause blistering and scarring on the skin of susceptible people, has been confirmed in their area. Located along the Pittsburgh/Buffalo railroad tracks at the intersection of Spithaler School and Ash Stop roads, and at...