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GREENBUG ( Schizaphis graminum ) - ARIZONA - Ranged 5-25 per sorghum plant in 

 Willcox area of Cochise County. (Ariz, Coop. Sur.). TEXAS - Moderate to heavy on 

 grain sorghum in Brazos, Robertson, and Burleson Counties. Ranged 0-1 colony per 

 plant; each colony averaged 25-30 aphids. Moderate to heavy in Hill, McLennan, 

 Falls, and Coryell Counties. (Green, Hoelscher) . Tremendous increase in activity 

 noted in north-central areas. Heavy in several fields east of Corsicana, Navarro 

 County. Heavy in some fields in Ellis County, treatment required. Light in Denton, 

 Collin, Grayson, Hunt, and Delta Counties. (Turney) . On South Plains, greenbug 

 infestations in grain sorghum remained light and scattered. In many fields in area 

 infestations declined during past 14 days. (Rummel) . OKLAHOMA - Light to moderate 

 on sorghum in Craig, Ottawa, and Payne Counties. (Okla. Coop. Sur.). ARKANSAS - 

 Single colony found in 4 counties surveyed in southwest area. Found in Hempstead 

 County for a new county record. (Boyer) . KANSAS - Mostly light to moderate on 3 

 to 8-inch sorghum in west-central and northwest crop districts. Beating rains 

 apparently lowered populations in some areas. Heavy populations of Hippodamia 

 convergens (convergent lady beetle), sometimes eggs and larvae, found in few 

 fields and may provide adequate control in some cases. (Bell). NEBRASKA - Light 

 in Lancaster, Gage, Webster, Thayer, Nuckolls, and Franklin Counties; averaged 10 

 percent of plants infested; parasitism by Lysiphlebus testaceipes (a braconid) 

 increasing. Greenbug threatening in Furnas, Harlan, and Red Willow Counties; 75- 

 90 percent of plants infested with 1-2 stem mothers and 5-35 aphids per plant. 

 Occasional fields in Red Willow County with up to 60 aphids per plant. (Staples, 

 Cornelius) . Infestations in grain sorghum in Lincoln County appear stable or 

 declined slightly. Many plants examined had up to 3 colonies of 4-5 aphids per 

 plant. (Campbell). 



POTATO LEAFHOPPER (Empoasca fabae ) - COLORADO - Ranged 20-25 per 100 sweeps of 

 potatoes in La Salle area of Weld County. (Urano) , WISCONSIN - Nymphs more 

 noticeable in regrowth alfalfa than prior weeks; ranged 3-5 per sweep near 

 Wisconsin River. Adults numerous at lights in northern Dane County June 21 and 

 generally 1-2 per 10 sweeps. (Wis, Ins. Sur.), 



POTATO PSYLLID ( Paratrioza cockerelli ) - WYOMING - None found on potatoes in 

 Goshen and Laramie Counties. Averaged 5 per 100 sweeps on Lycium sp. at 

 Torrington, Goshen County. (Parshall) . 



HORNWORMS (Manduca spp,) - GEORGIA - Eggs moderate to heavy on tobacco in Tift 

 and Appling Counties. (Girardeau, French, June 19). SOUTH CAROLINA - M. sexta 

 (tobacco hornworm) light on tobacco in Clarendon, Horry, Sumter, and Marlboro 

 Counties. (Benton). 



TOBACCO BUDWORM (Heliothis virescens ) - SOUTH CAROLINA - Continues a major 

 problem on tobacco in all counties. (Benton). 



CORN, SORGHUM, SUGARCANE 



EUROPEAN CORN BORER ( Ostrinia nubilalis ) - NEBRASKA - Light trap collections 

 indicate moth flights declining in Saunders and Dixon Counties. Egg deposition 

 heavy; first-generation larvae in most field and sweet corn. Percent plants 

 infested in 3 districts surveyed (5 fields per county) averaged: Northeast 76.1, 

 east 65.9, southeast 19. Egg masses per 5 plants by district averaged: Northeast 

 8.5, east 0.48, southeast 0.6. Most early corn in northeast and east districts 

 will require treatment. Fall (1970) survey showed these districts had heaviest 

 overwintering populations. Moth activity should continue throughout State next 

 7-10 days. Fresh egg masses common on corn in these 3 districts; averaged 1.7 

 per plant in northeast. Most larvae in first and second stages. Some controls 

 underway, but may be premature. (Keith, Berogan) . Larvae infested 10-29 percent 

 of corn plants in 4 early fields in Hall County. (Hill, Wedderburn) . SOUTH 

 DAKOTA - Severe damage to untreated corn expected next few weeks in southeast 

 area. First instars infested 100 percent of whorls of corn over 30 inches high 

 in Yankton County by June 24. Moths numerous. Larvae very heavy; up to 30 in some 

 whorls, 10-15 per whorl common in most fields, with 100 percent of whorls showing 

 shothole damage. (Kantack) . MINNESOTA - Moth emergence and egg laying increased. 



