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J. Rochat ; F. Vanlerberghemasutti ; P. Chavigny ; R. Boll ; L. Lapchin | 19991. Crops are often colonised by aphids having different life-history traits, and the aphids and their offspring compete for the shared resource. The intraspecific competition and dispersal characteristics of two strains (A and B) of the cotton a[...]
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M. Tissut ; F. Severin ; J. Rochat ; J. Benoit Guyod ; M. Gachet ; J. Mallion ; C. Degrange ; A. Boucherle | GRENOBLE : PRESSES UNIVERSITAIRES | 1979HERBICIDES,FONGICIDES,INSECTICIDES,RODENTICIDES,NEMATICIDES.DANGER DES PESTICIDES POUR L'HOMME,L'ENVIRONNEMENT.REGLEMENTATION UTILISATION.
article/chapitre/communication
L. Lapchin ; R. Boll ; J. Rochat ; A. Geria ; E. Franco | 1997Two visual abundance methods were used to estimate the density of healthy or mummified aphids, Aphis gossypii Clover, on leaves and whole cucumber plants in greenhouses. Additional explanatory variables (e.g., proportion of infested leaves per p[...]
