. Cooperative economic insect report. Insect pests Control United States Periodicals. - 53 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES COTTON JASSID* (Empoasca lybica (Bergevin)) Economic Importance: This leafhopper is one of the most important pests on cotton in the Sudan where it caused as much as 25 percent loss of the crop yearly in areas of the Gezira Province prior to initiation of a control program in 1945. This program, which has involved up to 250,000 acres annually, resulted in an estimated saving of 225,000 bales (400 lbs. per bale) of lint cotton during the period 1945-54. In
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 53 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES COTTON JASSID* (Empoasca lybica (Bergevin)) Economic Importance: This leafhopper is one of the most important pests on cotton in the Sudan where it caused as much as 25 percent loss of the crop yearly in areas of the Gezira Province prior to initiation of a control program in 1945. This program, which has involved up to 250,000 acres annually, resulted in an estimated saving of 225,000 bales (400 lbs. per bale) of lint cotton during the period 1945-54. In Israel, E. lybica is responsible for considerable injury to eggplant, tomato, pepper and-potato. Damage to young eggplant is sometimes so severe that the plantings are abandoned. Serious injury has also been recorded on grapes, particularly in Spain. Feeding of the leafhopper produces "hopperburn' or discoloration, curling, and drying of the foliage. This leads to stunting and premature shedding of buds and fruit or death of Empoasca lybica Damage to Grape Distribution: Wide range in Africa, from Mediterranean as far south as Tanganyika also Israel and 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 United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Branch; United States. Plant Pest Control Division; United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Washington, D. C. : U. S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
