MISCELLANEOUS FIELD CROPS 



A GALL MIDGE - MINNESOTA - Undetermined species causing much damage to sunflowers 

 in Red River Valley. Infested area appears to extend from southern edge of 

 western Polk County, through Norman County, and as far south as U.S. Highway 10 

 in Clay County. Infestations most severe in southern Norman County. Damage 

 ranged light to very heavy. In some fields, 75-90 percent of blossoms infested. 

 When populations heavy, little or no seed formed except for ring of developing 

 seed around edge of head. Time for control probably past. Sunflowers just 

 beginning to blossom north of infested area. No infestations found in Marshall, 

 Pennington, or Kittson Counties. (Minn. Pest Rpt.). 



POTATOES, TOMATOES, PEPPERS 



VARIEGATED CUTWORM ( Peridroma saucia ) - OREGON - Buildup in several Washington 

 County potato plantings. About 300 acres must be treated and additional 200 

 will probably need treatment. Counts in Cipole and Sherwood areas August 2 

 indicated up to 10 larvae per square foot in portions of fields showing 

 extensive defoliation. Larval feeding on exposed tubers also evident. All damage 

 reported to date restricted to Norgold and Kennebec varieties. Plantings of 

 Hages, Gems, and Norchips also examined. Survey of major potato-growing areas 

 in adjacent portions of Clackamas County revealed economic infestation on 18 

 acres located near Canby; larval counts as high as 20 per square yard. (Albee 

 et al.) . 



BEET ARMYWORM ( Spodoptera exigua ) - NEW MEXICO - Seriously damaged chile peppers 

 in Dona Ana County; treatment required. (N.M. Coop. Rpt.). 



POTATO TUBERWORM ( Phthorimaea operculella ) - MICHIGAN - Heavy infestation in 

 small patch of home-grown potatoes next to commercial tomato hothouse complex 

 in Monroe County. Surveys of commercial potato plantings negative in areas of 

 Monroe County with past histories of infestation. (Hanna) . 



TOMATO PINWORM ( Keiferia lycopersicella ) - MISSISSIPPI - Increased in tomato 

 fields and greenhouses near Crystal Springs in Copiah County. Caused moderate 

 to heavy damage to foliage and fruit. Insecticidal control attempted, results 

 fair. (Robinson). 



GREEN PEACH APHID ( Myzus persicae ) - NEW MEXICO - Light to heavy and damaging 

 chile peppers in Mesilla Valley, Dona Ana County. Control difficult. (N.M. 

 Coop. Rpt .) . 



BEANS AND PEAS 



GREEN CLOVERWORM ( Plathypena scabra) - MICHIGAN - Small increase of moth catches 

 at Montcalm County blacklight station. (Newman). 



WESTERN YELLOWSTRIPED ARMYWORM ( Spodoptera praefica) - IDAHO - Economic and 

 controls needed throughout Clearwater, Idaho, Nez Perce, Latah, and Lewis 

 Counties, in lentil and peafields July 26 to August 4. (Portman) . 



GENERAL VEGETABLES 



VARIEGATED CUTWORM ( Peridroma saucia ) - OREGON - Larvae in all table beet fields 

 in Eugene and Junction City area. Lance County. Foliar damage evident in most 

 plantings but controls effective. One 50-acre field near Junction City, examined 

 August 5, showed extensive damage to foliage in 10 rows along one edge of field. 

 Late instars feeding on exposed portions of beets. Estimated 50 percent of beets 

 in this peripheral region showed some feeding damage. (Beglau et al . ) . 



ONION THRIPS (Thrips tabaci ) - COLORADO - Up to 75 per plant, some damage in 

 onion fields of Arkansas Valley. (Schweissing) . 



