Tag Archives: weeds

Useful pesticides

We all know about the harm that can be caused by pesticides. While being misused, pesticides can have a negative impact on the plants, animals and human health. Animals that eat the treated with pesticides plants, have a small amount of pesticides left in their organisms. Being a food to a human, such animals represent a certain risk to human health. Not only the meat can be intoxicated with pesticides but also eggs, milk and the further products of milk production.

While working with pesticides, people accumulate them in the organism, what, in turn, may lead to the chronic diseases. Human needs have increased immensely, and people nowadays can’t eliminate the use of pesticides. (more…)

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Weevils and Weeds

UD researchers use weevils to check spread of prolific mile-a-minute weed

Mile-a-minute weed has declared war on Doug Tallamy’s yard. This non-native, invasive vine is growing up his trees, scrambling over shrubs and smothering tree seedlings. By blocking sunlight, it weakens a plant by reducing its ability to photosynthesize.

Mile-a-minute doesn’t care one whit that Tallamy, professor and chair of the University of Delaware’s Department of Entomology and Wildlife Ecology, is a highly respected proponent of native gardening who doesn’t believe in planting any non-natives, let alone a highly invasive non-native.

“The deer brought mile-a-minute from our neighbor’s yard three years after we moved in,” says Tallamy. “We had just a few plants the first year, a few hundred the second year, and 20 trillion the third year.” (more…)

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