. Agricultural plant pest control : a study manual for commercial and governmental pesticide applicators . Weeds; Pests. Su^arbeets 3cd Icafkomr - Circulifer tenellus Life cycle: The beet leafhopper is gray-green in color and about 3 mm long. They are also know by the common name of "white fly". This leafhopper will travel several hundred miles in the winds. Damage: The direct feeding of the beet leaf- hopper is not of economic importance, but it is the vector of curly top virus in beans and sugarbeets. A single highly infected leafhopper can transmit the disease. Habitat: The beet l
. Agricultural plant pest control : a study manual for commercial and governmental pesticide applicators . Weeds; Pests. Su^arbeets 3cd Icafkomr - Circulifer tenellus Life cycle: The beet leafhopper is gray-green in color and about 3 mm long. They are also know by the common name of "white fly". This leafhopper will travel several hundred miles in the winds. Damage: The direct feeding of the beet leaf- hopper is not of economic importance, but it is the vector of curly top virus in beans and sugarbeets. A single highly infected leafhopper can transmit the disease. Habitat: The beet leafhopper overwinters on Russian thistle and other plants in weedy areas and rangeland. Host plants include, in addition to Russian thisde, tomato, lambsquarter, beans, melons, mustards, nightshade, and Adult beet leafhopper Control: The best control for the beet leaf- hopper is cultural. There are several resistant varieties and planting as early as possible will help to withstand curly top virus. During hot, dry weather, frequent irrigation will help to keep high humidity in the plant canopy which repels the leafhoppers. Since the leafhoppers prefer the edges of the field, a perimeter application of an insecticide may work best. When scouting the field, the threshold to determine if an applica- tion is needed is 5 hoppers/10 sweeps. The beet leatTiopper can become a problem in Montana after a prolonged period of hot, dry weather. Most years it is not a problem pest. Cutworm - Peridmna smck mi See previous section (alfalfa hay, page 99) for description of life cycle, damage, and habitat. Control: Control of cutworms is advised when there is a 4 to 5% cutting of seedling beets. Flea kdles See previous section (canola, pages 104-105) for description. Sugarkd root ma^ot - Teknoj^s myoj^aefomis Life cycle: The adult fly is about 6 mm long. It has a glossy, black body with clear wings that have a smoky color to the margins. The adult female has a very distinct ovipositor.
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Keywords: ., bookcentury1900, bookcollectionamericana, bookl, booksubjectweeds
