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1. |
Side‐effects of 100 pesticides on the predatory mitePhytoseiulus persimilis, collected and evaluated according to the EPPO Guideline |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 701-712
P. A. OOMEN,
G. ROMEIJN,
G. L. WIEGERS,
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摘要:
A sequential decision‐making scheme for classifying the side‐effects of pesticides on the predatory mitePhytoseiulus persimilishas been published recently as an EPPO Guideline. Practical experience with the use of this guideline is reported in this paper. One hundred commercially available plant protection products were tested on the organophosphateresistantP. persimilispopulation now predominant in Europe. Test results and hazard classifications of these 51 insecticides/acaricides, 33 fungicides, 12 herbicides and 4 growth regulators are given. Criteria for classification are those recommended by the IOBC/WPRS Working Group‘Pesticides and Beneficial Organisms’. The use of the scheme appeared to be practical and ef
ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01304.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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2. |
Clavibacter michiganensisssp.insidiosusin lucerne seeds |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 713-718
J. NÉMETH,
E. LASZLO,
L. EMÖDY,
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摘要:
Bacterial wilt is a serious disease of Iucerne. Although there are several ways to transmit the pathogen, seed transmission is practically the only way to introduce the bacteria to previously free areas. In this work, naturally infected seed material and commercial seed lots have been screened by a combination of immunofluorescence (IF) staining and dilution plating. Isolates were confirmed by biochemical characterization and finally by artificial infection of lucerne seedlings. For seed lots free from the pathogen, a diagnosis can mostly be achieved within 2 days. The culture step is necessary only if IF staining is not unequivocally negative, and the full procedure has to be run only for a small portion of the samples. The proposed seed assay provides a reliable alternative to the visual inspection of lucerne fields to fulfil the phytosanitary requirements forClavibacter michiganensisssp.insidiosus.
ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01305.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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3. |
Influence of relative humidity on development and egg‐laying inPanonychus citriunder controlled conditions |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 719-722
F. BEITIA,
A. GARRIDO,
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摘要:
The influence of relative humidity on several aspects of the biology of citrus red mite,Panonychus citri, has been analysed. Five constant RH values (45, 55, 65, 75, 85%), with a fixed constant temperature of 25±2°C, have been studied. An RH of 65% was optimal for mite development and egg‐laying potential, providing a maximum rmvalue of 0.
ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01306.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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4. |
Recherche des bactérioses de la pomme de terre dans le littoral algérois |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 723-726
N. NASSAN AGHA,
F. FETTOUCHE,
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摘要:
Une recherche des bactérioses de la pomme de terre de consommation a été entreprise en Algérie. Les prospections dans le littoral algérois et les analyses des plants et tubercules par des moyens de diagnostic adéquats nous ont permis de confirmer, pour la premiere fois, la présence de deux bactérioses potentiellement graves: la pourriture annulaire due àClavibacter michiganensisssp.sepedonicuset la jambe noire due àErwinia carotovorassp.alroseptica.En revanche, aucun cas dePseudomonas solanacearumn'a é
ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01307.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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5. |
Recherche du feu bactérien dûàErwinia amylovorasur Poirier dans I'Algérois |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 727-729
N. NASSAN AGHA,
N. ANKI,
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摘要:
La recherche du feu bactérien, maladie bactéerienne redoutable pour les Rosaceae fruitiéres à pépins et ornementales, a été entreprise dans I'Algérois. Un total de 196 échantillons a été soigneusement collecté dans sept vergers de poiriers, réguliérement prospectés. Ils représentent dans I'ensemble une superficie de 35, 76 ha et 150.023 arbres. Ainsi, 107 isolements ont pu être réalisés. Aucune souche d'Erwinia amylovoran'a été isolée. Toutefois, 24 souches appartenant au genreErwiniaont été obtenues: 13E. chrysanthemi, 9Erwinia‐like et 2E. carotovora caratovora.Cette étude s'est limitée à une seule région et il serait intéressant de la poursuivre dans toutes les régions à h
ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01308.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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6. |
Rapport annuel pour 1990 |
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EPPO Bulletin,
Volume 21,
Issue 4,
1991,
Page 731-763
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ISSN:0250-8052
DOI:10.1111/j.1365-2338.1991.tb01309.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
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