. Cooperative economic insect report. Beneficial insects; Insect pests. - 391 - 100 sweeps. Winged adults in eastern, northeastern and northwestern areas. (111. Ins. Rpt.). PENNSYLVANIA - Beginning to appear on alfalfa in Northampton and Berks Counties. (Menusan). Few observed in south- central area. (Pepper). SERPENTINE LEAF MINER (Liribmyza sp. ) - TEXAS - Heavy local populations on alfalfa in Maverick County. (Richardson). SPOTTED ALFALFA APHID - UTAH - Common in all Kane County alfalfa fields. (Rose). ARIZONA - High population with many winged forms on untreated fields in Salt River Valley
. Cooperative economic insect report. Beneficial insects; Insect pests. - 391 - 100 sweeps. Winged adults in eastern, northeastern and northwestern areas. (111. Ins. Rpt.). PENNSYLVANIA - Beginning to appear on alfalfa in Northampton and Berks Counties. (Menusan). Few observed in south- central area. (Pepper). SERPENTINE LEAF MINER (Liribmyza sp. ) - TEXAS - Heavy local populations on alfalfa in Maverick County. (Richardson). SPOTTED ALFALFA APHID - UTAH - Common in all Kane County alfalfa fields. (Rose). ARIZONA - High population with many winged forms on untreated fields in Salt River Valley. Generally light to moderate in Cochise and Greenlee Counties, up to 5 per sweep, with lady beetle popu- lations building up. Development of infestations later in Cochise County than in 1955. High in Safford Valley of Graham County with untreated fields severely damaged and reinfestation rapid. One field that had been treated had over 100 winged forms per 100 sweeps. (Ariz. Coop. Rept.). NEBRASKA - None found yet in southeastern area. (Andersen). KANSAS - Heaviest infestations in parts of or scattered throughout southeastern counties. Populations of lady beetles, lacewings, nabids and other preda- tors building up rapidly but unable to control infestations. (Matthew). OKLAHOMA - Continuing heavy populations in most undamaged fields in Pauls Valley area. Plants have not recovered in fields turned brown in early spring. (Coppock). TEXAS - Heavy widespread populations on alfalfa in Brazos and Burleson Counties. Heavy widespread populations of lacewings and lady beetles feeding on alfalfa aphids in Brazos and Burle- son Counties. (Randolph). Light to heavy widespread populations on alfalfa in Dimmit, Maverick and Collin Counties. (Richardson, Dahlberg). ARKANSAS - Local heavy numbers as far east as Baxter County. (Warren). LOUISIANA - Found in two parishes, Iberville and Assumption, for first time. (Oliver). NEW MEXICO - See additional notes. Spotted Alfalfa Aphid Infestation as R
Size: 1987px × 1257px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
