Integrated pest management in wasabi. 7. Effects of mycofungicides against white rust, Albugo wasabiae Hara and powdery mildew, Oidium sp. on wasabi

SUMMARYPowdery mildew is one of the most important vineyard diseases. Infection requires the interaction of a susceptible host (a vine in a phenological phase susceptible to the pathogen), a virulent pathogen (the fungus Uncinula necator (Schw.) Burr) and an environment favourable for disease development (optimal meteorological conditions). The aim of the present study was the implementation of a system to predict powdery mildew infection periods in order to optimize and reduce the application of pesticide treatments in a vineyard. The study was conducted in a vineyard of the ‘Ribeiro’ Designation of Origin region located in north-western Spain from 2006 to 2011, during the Vitis vegetative period. The phenological study was conducted following the BBCH phenological scale and infection risk index (IRI) was calculated based on the maximum temperature. Aerobiological sampling was performed using a LANZONI VPPS-2000 volumetric trap. The results of the study show that the critical phenological stages for powdery mildew infection are 5 (inflorescence emergence), 6 (flowering) and 7 (development of fruit), as consequence of the high susceptibility of the vine. The IRI allows determination of the periods in which the meteorological conditions could facilitate fungal attacks during the aforementioned phenological phases. Finally, the aerobiological model helps to identify and predict the times of real infection risk among the possible periods described by the IRI with high accuracy, in order to avoid possible reappearance of infection symptoms in the vine. The combination of these three variables provides a valuable tool to establish an accurate, modern, integrated pest-management strategy in a vineyard.

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Integrated pest management in wasabi. 8 Pathogenicity to Cruciferae of Albugo wasabiae (Pathogen of White rust in Wasabia japonica (Miq.) Matsum.)

Annual Report of The Kansai Plant Protection Society ◽

10.4165/kapps.52.87 ◽

2010 ◽

Vol 52 ◽

pp. 87-88

Author(s):

Masayuki Togawa ◽

Hajime Haga ◽

Yasuaki Sugiyama ◽

Sei Kawamura

Keyword(s):

Integrated Pest Management ◽

Pest Management ◽

White Rust ◽

Wasabia Japonica

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Screening of alternative products for integrated pest management of cucurbit powdery mildew in Sweden

European Journal of Plant Pathology ◽

10.1007/s10658-017-1258-x ◽

2017 ◽

Vol 150 (1) ◽

pp. 127-138 ◽

Cited By ~ 10

Author(s):

Mira Rur ◽

Birgitta Rämert ◽

Margareta Hökeberg ◽

Ramesh R. Vetukuri ◽

Laura Grenville-Briggs ◽

...

Keyword(s):

Powdery Mildew ◽

Integrated Pest Management ◽

Pest Management ◽

Cucurbit Powdery Mildew

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Quaternary integrated pest management concept for powdery mildew in sugar beet. I. Analysis of epidemic determinants to predict disease onset

Journal of Plant Diseases and Protection ◽

10.1007/bf03356164 ◽

2006 ◽

Vol 113 (2) ◽

pp. 61-67 ◽

Cited By ~ 1

Author(s):

P. F. J. Wolf ◽

R. Lenz ◽

K. Baron ◽

J.-A. Verreet

Keyword(s):

Powdery Mildew ◽

Sugar Beet ◽

Integrated Pest Management ◽

Pest Management ◽

Disease Onset ◽

Management Concept

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Electron investigations of rhabdovirus-like particles in mexican bean beetles and crickets

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100082753 ◽

1978 ◽

Vol 36 (2) ◽

pp. 378-379

Author(s):

J. R. Adams ◽

G. J Tompkins ◽

A. M. Heimpel ◽

E. Dougherty

Keyword(s):

Biological Control ◽

Integrated Pest Management ◽

Pest Management ◽

Developmental Stages ◽

Management Program ◽

Acheta Domesticus ◽

Epilachna Varivestis ◽

House Cricket ◽

Similar Morphology ◽

Bean Beetle

As part of a continual search for potential pathogens of insects for use in biological control or on an integrated pest management program, two bacilliform virus-like particles (VLP) of similar morphology have been found in the Mexican bean beetle Epilachna varivestis Mulsant and the house cricket, Acheta domesticus (L. ).Tissues of diseased larvae and adults of E. varivestis and all developmental stages of A. domesticus were fixed according to procedures previously described. While the bean beetles displayed no external symptoms, the diseased crickets displayed a twitching and shaking of the metathoracic legs and a lowered rate of activity.Examinations of larvae and adult Mexican bean beetles collected in the field in 1976 and 1977 in Maryland and field collected specimens brought into the lab in the fall and reared through several generations revealed that specimens from each collection contained vesicles in the cytoplasm of the midgut filled with hundreds of these VLP's which were enveloped and measured approximately 16-25 nm x 55-110 nm, the shorter VLP's generally having the greater width (Fig. 1).

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