EFFECT OF PLANT EXTRACTS AND ORGANIC SUBSTANCES ON MORTALITY OF Cornitermes cumulans (KOLLAR, 1832) (ISOPTERA: TERMITIDAE) / Effect of plant extracts and organic substances on mortality of Cornitermes cumulans (Kollar, 1832) (Isoptera: Termitidae).

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

In Brazil, termites belonging to the genus Cornitermes and Syntermes are responsible for the high mortality of plants in the early stages of development of many crops. So, in laboratory bioassays, plants and organic substances that can control workers of Cornitermes cumulans (Kollar, 1832) were tested. Forty milligrams of extract were collected from each plant and mixed in a diet with sugar cane bagasse, mortality being evaluated after 48 hours. Among the thirty-two plant extracts tested, Gymnanthes concolor (Euphorbiaceae) (Leaves); Croton floribundus (Euphorbiaceae) (Tree bark); Croton urucurana (Euphorbiaceae) (Leaves), and Terminalia brasiliensis (Combretaceae) (Leaves) had significantly higher mortality than the negative control. Other laboratory bioassay was conducted to determine the effectiveness of Chalcone, Acylhydrazone, Phenols and derivatives against workers of Cornitermes cumulans. Two milligrams of each organic substance in a diet with sugar cane bagasse were mixed, mortality being evaluated after 48 hours. No organic substance tested showed efficiency in termite control.

ASSUNTO(S)

ingestion cupins control extratos de plantas ingestÃo entomologia agricola termites organic substances controle plants extract substÃncias orgÃnicas

ACESSO AO ARTIGO

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