. Cooperative economic insect report. Beneficial insects; Insect pests. - 313 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES SPINY BOLLWORM (Earias insulana (Bdv.)) Economic Importance: Wherever spiny bollworm occurs, it is one of the most serious pests of cotton. Along with the related phalaenid, E. fabia, it is considered the worst pest of cotton in India. Observations Tn that country show that 8-60 percent of the crop may be damaged through attack on the tender stems of young plants and when the cotton reaches the fruiting stage infestations range up to 75 percent. Infestations of 83 per
. Cooperative economic insect report. Beneficial insects; Insect pests. - 313 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES SPINY BOLLWORM (Earias insulana (Bdv.)) Economic Importance: Wherever spiny bollworm occurs, it is one of the most serious pests of cotton. Along with the related phalaenid, E. fabia, it is considered the worst pest of cotton in India. Observations Tn that country show that 8-60 percent of the crop may be damaged through attack on the tender stems of young plants and when the cotton reaches the fruiting stage infestations range up to 75 percent. Infestations of 83 percent have been observed in northern Sudan. During 1952 it was reported that E. insulana destroyed over 90 percent of the cotton crop in Israel and from 40-80 percent of untreated cotton in Baghdad area of Iraq. Cotton growing in southwestern Iran is impractical without control of this pest and late cotton is often severely injured in Spain. Damage to Cotton by Spiny Bollworm. 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. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
