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A study has found that frequent mowing of Solanum elaeagnifolium, also known as silverleaf nightshade, may help create a superweed. A professor of entomology and plant pathology has been studying silverleaf nightshade for more than a decade. New findings have shown that the more silverleaf nightshade was mowed, the more it developed ways to avoid destruction. The taproot went down further, nearly 5 feet deep, in the first generation of mowed plants. More spikes popped out on the stem as a defense against caterpillars feeding on the flowers. The flowers became more toxic to caterpillars, leading to less pressure from natural predators.

United statesUniversity of arkansasJesus chavanaAlexa alanizAlexis racelisAlejandro vasquezRupesh kariyatBradley christophersonSukhman singhUniversity of texas rio grande valleyChemical sciencesSchool of integrativeUniversity of arkansas system division agricultureScientific reportsSouth africaArkansas agricultural experiment station