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De Meijer, A.H., Laboratory of Experimental Entomology, University of Amsterdam, Kruislaan 302, 1098 SM Amsterdam, Netherlands
Wysoki, M., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Swirski, E., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Blumberg, D., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Izhar, Y., Extension Service, Ministry of Agriculture, Tel Aviv, 6700, Israel
Since 1980 the pyriform scale, Protopulvinaria pyriformis (Cockerell) (Homoptera: Coccidae), has been an important pest of avocado in Israel. Field evaluation showed differences in the susceptibility of avocado cultivars to P. pyriforms; Nabal were the most infested, followed by Hass and Fuerte, whereas Ettinger was sometimes attacked when located close to infested Nabal or Hass trees. In a laboratory experiment P. pyriformis was able to develop and to reproduce on Nabal, Ein Vered and, to a lesser extent, on Hass. Survival of P. pyriformis populations was very low on Fuerte, Horshim and Wurz cultivars, whereas P. pyriformis settled more successfully on Ettinger, Pinkerton and Reed. Results from the laboratory experiment confirmed the actual infestation rates in avocado orchards. © 1989.
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Susceptibility of avocado cultivars to the pyriform scale, Protopulvinaria pyriformis (Cockerell) (Homoptera: Coccidae)
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De Meijer, A.H., Laboratory of Experimental Entomology, University of Amsterdam, Kruislaan 302, 1098 SM Amsterdam, Netherlands
Wysoki, M., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Swirski, E., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Blumberg, D., Department of Entomology, Institute of Plant Protection, Agricultural Research Organization, Bet Dagan, 50 250, Israel
Izhar, Y., Extension Service, Ministry of Agriculture, Tel Aviv, 6700, Israel
Susceptibility of avocado cultivars to the pyriform scale, Protopulvinaria pyriformis (Cockerell) (Homoptera: Coccidae)
Since 1980 the pyriform scale, Protopulvinaria pyriformis (Cockerell) (Homoptera: Coccidae), has been an important pest of avocado in Israel. Field evaluation showed differences in the susceptibility of avocado cultivars to P. pyriforms; Nabal were the most infested, followed by Hass and Fuerte, whereas Ettinger was sometimes attacked when located close to infested Nabal or Hass trees. In a laboratory experiment P. pyriformis was able to develop and to reproduce on Nabal, Ein Vered and, to a lesser extent, on Hass. Survival of P. pyriformis populations was very low on Fuerte, Horshim and Wurz cultivars, whereas P. pyriformis settled more successfully on Ettinger, Pinkerton and Reed. Results from the laboratory experiment confirmed the actual infestation rates in avocado orchards. © 1989.
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