NDLI: Effect of azadirachtin on the control of Anticarsia gemmatalis and its impact on Trichogramma pretiosum

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Effect of azadirachtin on the control of Anticarsia gemmatalis and its impact on Trichogramma pretiosum

Content Provider	Springer Nature Link
Author	Almeida, G. D. Zanuncio, J. C. Pratissoli, D. Andrade, G. S. Cecon, P. R. Serrão, J. E.
Copyright Year	2010
Abstract	Anticarsia gemmatalis has great potential to reduce soybean productivity, and the egg parasitoid Trichogramma pretiosum is a major agent in the biological control of this pest in soybean fields. We show that azadirachtin is able to control velvetbean caterpillars in soybean plants and also that it has no effects on the parasitoid T. pretiosum. Soybean plants were sprayed with solutions containing control (water), 50 and 100 mg.l$^{−1}$ of azadirachtin (AzaMax™ 12 g a.i.l$^{−1}$). Third instar larvae of A. gemmatalis were confined to soybean plants after the spraying. Leaf consumption and larval mortality of A. gemmatalis were evaluated. Newly emerged females of T. pretiosum were placed for 24 h in tubes with a piece of cardboard containing the same doses of azadirachtin used against velvetbean caterpillars. After 24 h, cardboard with 20 eggs of A. gemmatalis was offered for parasitism during 24 h, and the emergence and sex ratio of progenies were determined. Azadirachtin at 50 or 100 mg.l$^{−1}$ reduced leaf consumption and caused 100% mortality in A. gemmatalis larva. Azadirachtin did not negatively affect the parasitism, emergence or sex ratio of the progeny. This indicates that the product can be used with mass release of T. pretiosum to control A. gemmatalis.
Starting Page	413
Ending Page	419
Page Count	7
File Format	PDF
ISSN	03342123
Journal	Phytoparasitica
Volume Number	38
Issue Number	5
e-ISSN	18767184
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-10-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antifeeding Azadirachta indica Glycine max Neem Sex ratio Soybean Velvetbean caterpillar Life Sciences Agriculture Ecology Plant Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Plant Science Insect Science

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