Pesquisa Agropecuária Brasileira (2013) 48, 1529-1537
José Magid Waquil, Patrick Marques Dourado, Renato Assis de Carvalho, Wladecir Salles Oliveira, Geraldo Ubirajara Berger, Graham Philip Head and Samuel Martinelli (2013)
Manejo de lepidópteros-praga na cultura do milho com o evento Bt piramidado Cry1A.105 e Cry2Ab2
[Management of Lepidopteran pests in maize crop using the Bt pyramided event Cry1A.105 and Cry2Ab2]
Pesquisa Agropecuária Brasileira 48 (12), 1529-1537
Abstract: The objective of this work was to evaluate the efficacy of the pyramided event (MON 89034), expressing Cry1A.105 and Cry2Ab2 proteins, in the control of the main lepidopteran maize pests in Brazil, Spodoptera frugiperda, Helicoverpa spp., and Diatraea saccharalis. The trials were conducted in four regions of the country, using the hybrid DKB 390, subjected to six treatments: hybrid containing the pyramided event, hybrid expressing only the protein Cry1A(b) (MON 810), and conventional hybrid (non Bt), all with and without integrated management for S. frugiperda. For the pyramided event, chemical control was not necessary in any of the evaluated locations. Significant differences were observed between treatments for larval damage and presence. In general, those variables were lower for the pyramided hybrid and higher for the conventional hybrid without chemical control. Under high infestation, chemical control reduced the damage caused by S. frugiperda and D. saccharalis both on the single protein event and on the conventional hybrid. Based on the damage caused by the insects, the pyramided event Cry1A.105 and Cry2Ab2 is efficient in the control of the main lepidopteran maize pests in Brazil.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Graham Head, Samuel Martinelli
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
