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5 (1); Shawnee 2-200 (3); and Osage 5 (1). (Bell). NEBRASKA - Small colonies 

 developing on milo in Adams County. No visible damage in fields examined. 

 (Roselle, Berogan) . Increasing in Lancaster and Gage Counties; caused no visible 

 damage; up to 50 percent of plants infested with 1-200 per plant. Most still in 

 whorls and not moved to lower leaf surfaces. (Staples, Cornelius). SOUTH DAKOTA - 

 Trace, less than 1 per 10 feet of row, near Tyndall, Bon Homme County, and less 

 than 5 per 10 feet of row near Wagner, Charles Mix County. Sorghum 12 inches 

 high in fields examined. (Fransen) . 



POTATO LEAFHOPPER (Empoasca fabae ) - WISCONSIN - Populations erratic in regrowth 

 alfalfa; counts per sweep ranged 1-2 in southwest to 8-10 in sandy soiled areas. 

 Populations expected to increase generally as remaining alfalfa cut. (Wis. Ins. 

 Sur.). MICHIGAN - Adults abundant around lights at night in East Lansing. Very 

 few nymphs seen in alfalfa, but alfalfa and bean growers should be alert. (Sauer) . 

 KENTUCKY - Adults averaged 300 per 100 sweeps in red clover in Warren County. 

 (Barnett) . 



POTATO PSYLLID (Paratrioza cockerelli ) - WYOMING - Ranged 0-1 per 100 sweeps in 

 2 untreated fields near La Grange; averaged 4 per 100 sweeps on Lycium sp. at 

 Torrington, Goshen County. Few nymphs present. None found in potato fields in 

 Laramie County. (Parshall) . 



TOBACCO BUDWORM (Heliothis virescens ) - NORTH CAROLINA - First-generation larvae 

 damaged 3-5 percent of tobacco plants in 10 fields in Person area of Granville 

 County. Second-generation eggs appearing. (Hunt). MARYLAND -Adults laying eggs in 

 St. Marys, Calvert, and Charles Counties. Infestations averaged less than 1 

 percent in these counties. (U. Md,, Ent . Dept.). 



TOBACCO HORNWORM (Manduca sexta) - NORTH CAROLINA - First-generation third and 

 fourth-stage larvae (1 per 100 plants) appearing on tobacco in northern counties. 

 Based on 50 plants in 16 fields, damage ranged 2-10 percent. (Hunt). KENTUCKY - 

 Light infestation reported from western areas. (Barnett). MARYLAND - Adults laying 

 eggs in Charles, Anne Arundel, St. Marys, and Prince Georges Counties. No larval 

 damage yet. (U. Md., Ent. Dept.). 



TOMATO HORNWORM (Manduca quinquemaculata ) - OKLAHOMA - Damage moderate to home 

 garden tomatoes in eastern Payne County. Occasional M. sexta (tobacco hornworm) 

 on tomatoes at Perkins, Payne County. (Okla. Coop. Sur.) . TENNESSEE - Observed M, 

 quinquemaculata in all tobacco fields surveyed in central and eastern areas, light 

 to date; controls should be applied. (Pless) . 



CORN, SORGHUM, SUGARCANE 



EUROPEAN CORN BORER (Ostrinia nubilalis ) - NORTH CAROLINA - Spot checks in 10 

 fields of corn in Granville area, Person County, indicate infestation 2-50 percent. 

 Infestation 10 percent in most fields; appears restricted to 4-foot corn. (Hunt). 

 TENNESSEE - First to third instars observed in whorls and tunneling stalks in corn 

 throughout central and eastern areas. (Pless). KENTUCKY - First and second instars 

 infested 60-75 percent of corn in Todd, Union, and Crittenden Counties, 15 percent 

 in Warren County; one location in Warren County had 50 percent infestation with 

 2-3 borers per plant. (Barnett). MARYLAND - Infestations ranged 5-60 percent in 

 earliest planted corn in Wicomico, Worcester, Dorchester, and Talbot Counties. 

 Heaviest infestations west of Chesapeake Bay ranged 10-40 percent in early corn. 

 Pupation of first-generation borers noted in Somerset and Worcester Counties. 

 (U. Md., Ent. Dept.). ILLINOIS - Percent plants showing whorl feeding by district: 

 Northwest 16.8, northeast 5.9, west 20.7, east 2.8, east-southeast 20.7, southeast 

 13. Average number of larvae per plant by district: Northwest 1, northeast 0.4, 

 west 0.3, east 0.7, east-southeast 1.7, southeast 1.4. (111. Ins. Sur.). 

 WISCONSIN - Larval feeding variable. Most damage on early sweet corn in tassel 

 stage; 50 percent of plants infested with up to 4 larvae per plant in some fields. 

 Infestation averaged 20 percent in early field corn; 8 percent or less in later 



