Zobrazeno 1 - 5
of 5
pro vyhledávání: '"M. S. Ledieu"'
Autor:
Franz Bigler, L. Samsøe-Petersen, E. Naton, M. S. Ledieu, W. P. J. Overmeer, P. Huang, H. Bogenschütz, G. Viggiani, A. Q. Zon, S. I. Firth, S. A. Hassan, P. A. Oomen, J. U. Brown, W. Rieckmann
Publikováno v:
Zeitschrift für Angewandte Entomologie. 95:151-158
The side effects of 40 pesticides on 9 to 13 beneficial arthropods were tested by members of the Working Group “Pesticides and Beneficial Arthropods” of the International Organization for Biological Control in 6 different countries using standard
Autor:
A. Q. Zon, H. Bogenschütz, L. Samsose‐Petersen, M. A. Easterbrook, F. Klingauf, G. Vanwetswinkel, W. D. Englert, C. Inglesfield, M. S. Ledieu, Peter J. Edwards, E. Dickler, J. Brun, P. Huang, W. P. J. Overmeer, C. Kühner, W. Rieckmann, J. Stevenson, P. Chiverton, P. A. Oomen, J. J. Tuset, F. Bigler, S. I. Firth, E. Naton, S. W. Shires, S. A. Hassan, P. Blaisinger, J. N. Reboulet, P. Plevoets, A. Stäubli
Publikováno v:
EPPO Bulletin. 15:214-255
A short description is given of 19 laboratory, 12 semi-field and 5 field methods to test the side-effects of pesticides on beneficial organisms. The methods were developed according to standard guidelines by members of the Working Group ‘Pesticides
Autor:
N. L. Helyer, M. S. Ledieu
Publikováno v:
Annals of Applied Biology. 102:275-279
SUMMARY Pyrazophos was more effective than dioxanthion against chrysanthemum leaf miner (Phytomyza syngenesiae Hardy) when applied as a mist onto bed-grown plants irrespective of the stage of development of the pest. When pyrazophos was applied at th
Autor:
M. S. Ledieu, N. L. Helyer
Publikováno v:
Annals of Applied Biology. 114:9-13
Summary The phytotoxicity of methyl bromide gas on chrysanthemum cuttings was investigated in relation to gas concentration, length of exposure, temperature, and variety and age of cuttings. Concentrations of 10.5 to 13.5 g/m3 for 4 to 5 h produced a
Autor:
M. S. Ledieu
Publikováno v:
Annals of Applied Biology. 88:251-255
SUMMARY Fifteen insecticides were tested in the laboratory against larvae of Mamestra brassicae, a chrysanthemum pest. Seven of these, methomyl, chlorpyrifos, leptophos, iodofenphos, methamidophos, mephosfolan and fenitrothion were significantly more