. Agricultural plant pest control : a study manual for commercial and governmental pesticide applicators . Weeds; Pests. in early summer and the females lay their eggs in cluster of about lOOin the soil. These eggs hatch in 10-21 days. The larvae burrow into the soil looking for grasshopper eggs to feed on. The larvae pupae within 2 weeks and overwinter in the soil. There is one generation per year. All species of bhster beetles contain a bhstering sub- stance called cantharadin. And when the adults are crushed, the will cause bhstering on the skin. Damage: Blister beetles usually become a pro
. Agricultural plant pest control : a study manual for commercial and governmental pesticide applicators . Weeds; Pests. in early summer and the females lay their eggs in cluster of about lOOin the soil. These eggs hatch in 10-21 days. The larvae burrow into the soil looking for grasshopper eggs to feed on. The larvae pupae within 2 weeks and overwinter in the soil. There is one generation per year. All species of bhster beetles contain a bhstering sub- stance called cantharadin. And when the adults are crushed, the will cause bhstering on the skin. Damage: Blister beetles usually become a problem where host crops are grown next to rangeland or where grasshoppers breed. The adults feed on plant foliage and flowers. Crops include alfalfa, corn, potatoes, beans, peas, on- ions, carrots, peppers, radishes, cereal, ornamen- tals and weeds. In alfalfa the adults will feed on new crown growth in late spring and summer. The larvae feed on grasshopper eggs deposited in the soil and are considered beneficial. One larva can destroy 30 or more eggs. Habitat: Adult beetles tend to appear in years of grasshopper outbreaks since the larvae are parasitic on grasshopper eggs. Problems have occurred where numbers of beetles are contained in hay bales and fed to horses resulting in sick- ness and death. Blister beetles can be found in fields, pastures, and crop lands. Control: Early cutting will avoid most prob- lems with blister beetles. They usually do not build up until the alfalfa is in full bloom to feed on the flowers. If swarms are noted in the field and the hay crop is to be fed to horses, an insec- ticide treatment should be justified. Adult blister beetle. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Montana. Dept. of Agriculture; Hinck, Laura; Johnson, Kim; Mullin, Barbara H; Montana. Agricultural Sc
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Keywords: ., bhlco, bookcentury1900, bookcollectionamericana, booksubjectweeds
