• Reproduction is from seed. • Spiny Amaranth • A summer annual that grows erect and freely branches. Death may … This is an annual that grows on a red usually hairy stem with many branches. “Where you feed the hay, you’re going to wind up having pigweed growing. • Roots are fibrous from a well developed taproot. This is a real problem for people who grow crops for a living, as it can affect their ability to make a profit. Pigweed Herbicides. Pigweed (Amaranthus retroflexus) goes by many names, including redroot pigweed, redroot amaranth and many others. It is still toxic if dried and baled into hay. Originally posted by Penn State University. If combine harvest cannot be avoided, harvest infested fields last to avoid moving seeds away from the infested fields. Pigweed and its relative lamb's quarters can cause kidney failure. Leaves are oval & alternate. Contact a veterinarian as soon as possible. • Fibrous taproot is usually red. Pigweed poisoning can be fatal, if not treated promptly. An organic mulch, such as 3–4 inches of straw or hay (~5–10 tons/ac), applied within a day after cultivating an established crop, can reduce subsequent pigweed emergence by 90%. Do not combine harvest mature pigweeds. A Little About Pigweed. Redroot pigweed and lamb’s-quarters, for instance, contain oxalates and should not be used as sole feed. That’s one way pigweed is being moved around.” One pigweed plant is capable of producing thousands of tiny seeds that can move along on the slightest breeze, in the basket of a cotton picker … even on a cow’s hooves. Pigweed dispels the myth that toxic plants must be deadly beauties, they can be downright ugly too! Amaranthus retroflexus is also called Amaranth & Pigweed. Clinical signs include profuse salivation, incoordination, violent seizures, bloating in ruminants and colic in horses. Depending on where you live, some wild pigweeds have been found to be resistant to agricultural herbicides like Roundup and Atrazine. Early signs are followed by bradycardia or tachycardia, arrhythmias, hypotension and hypothermia. Pigweed - posted in Weed and Pest Management: This isn't related to pigweed in hayfields (Lord help me that never happens) But I've had a problem with pigweed in my watermelon patch because I planted where a cattle hay ring use to be. Here, as in so many areas of farm management, a diverse mix is … Cows have been gone for years now, but I was wondering if you guys have any experience with spraying Sonalan or Reflex mixed together? If your horse is showing signs of pigweed poisoning he need to be removed from the pasture he has been foraging in and placed in a quiet stall. • Small greenish flowers are produced in dense, stiff spike-like terminal shoots. Pigweed can be very toxic if eaten in large quantities. 6. 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