NDLI: Evaluating insecticides for the control of narcissus flies under field conditions in Israel

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The 10th Conference of the Entomological Society of Israel : Agricultural Entomology February 11,1997 ARO, the Volcani Center, Bet Dagan, Israel

In memoriam ( Phytoparasitica , Volume 25 , Issue 2 )

Phytoparasitica : Volume 25, Issue 1, Supplement,March 1997

Phytoparasitica : Volume 25, Issue 1, March 1997

Evaluating insecticides for the control of narcissus flies under field conditions in Israel

Content Provider	Springer Nature Link
Author	Ben Yakir, D. Hadar, Ester Chen, M.
Copyright Year	1997
Abstract	In Israel, narcissus bulb flies (Diptera: Syrphidae) are serious pests of cultivated flower bulbs of the families Liliaceae and Amaryllidaceae. The large narcissus fly(Merodon eques) is the major pest, whereas the small narcissus fly (a new species in the genusEumerus, yet to be described) is only a secondary pest. The large narcissus fly is also considered a quarantine pest by the U.S.A. authorities. Narcissus bulbs,Narcissus tazetta (var. ‘Ziva’), were planted in an experimental field at Bizzaron during November 1995 and harvested during June 1996. Currently aldicarb (Temik) is recommended for the control of narcissus fly larvae. We compared the control efficacy of imidacloprid (Confidor) and isazofos (Miral) with that of aldicarb. These latter insecticides were applied to the soil in February, in April, or on both dates. The mean level of damaged bulbs in the untreated plots was 32%. Two applications of aldicarb, one in February and one in April, reduced the damage to the lowest level of 0.5%. A single application of aldicarb in February, and two applications of imidacloprid—one in February and one in April—reduced the damage to 5-10%. Treatments with imidacloprid in February or in April, reduced the damage to 12-13%. Neither one application of aldicarb in April, nor any of the treatments with isazofos, was effective. In all treatments, larvae of the large narcissus fly were found in only approximately one-third of the damaged bulbs. The level of infestation with the small narcissus fly in the untreated bulbs was only approximately 2%. The effects of the insecticide treatments on the small narcissus fly were similar to those recorded for the large narcissus fly .
Starting Page	93
Ending Page	97
Page Count	5
File Format	PDF
ISSN	03342123
Journal	Phytoparasitica
Volume Number	25
Issue Number	2
e-ISSN	18767184
Language	English
Publisher	Springer Netherlands
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Syrphidae Merodon eques Eumerus spp. larva chemical control imidacloprid (Confidor) isazofos (Miral) aldicarb (Temik) Plant Pathology Plant Sciences Ecology Agriculture Life Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Insect Science

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