Australian sheep get high and die on toxic weed

When Australian farmer Tony Knight first saw a purple-flowering plant growing across the bushfire-scarred terrain where his sheep grazed, his first thought was that it looked like "good stock feed".

Roundup resistant weeds pose environmental threat

(AP) -- When the weed killer Roundup was introduced in the 1970s, it proved it could kill nearly any plant while still being safer than many other herbicides, and it allowed farmers to give up harsher chemicals and reduce ...

Overseas lab seeks US weed control 'recruits'

The search is on for insects, mites, microbes or nematodes that could be used in a biologically based approach to controlling silverleaf nightshade, an invasive weed from the Americas that has spread to southern Europe, Africa, ...

Spread of Western Juniper Seeds Studied

(PhysOrg.com) -- Aromatic, evergreen foliage and plump, dusty-blue to nearly purple berries make western juniper appealing, whether it's a small shrub or a lofty tree. The trouble is, during the past 100 years or so, some ...

Birds cultivate decorative plants to attract mates

An international team of scientists has uncovered the first evidence of a non-human species cultivating plants for use other than as food. Instead, bowerbirds propagate fruits used as decorations in their sexual displays. ...

Waterhemp rears its ugly head ... again

Waterhemp has done it again. University of Illinois researchers just published an article in Pest Management Science confirming that waterhemp is the first weed to evolve resistance to HPPD-inhibiting herbicides.

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