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פותח על ידי קלירמאש פתרונות בע"מ -
Attraction of Lobesia botrana to Grapevine Cultivars: A Field Study [abstract]
Year:
2003
Source of publication :
Phytoparasitica
Authors :
הררי, אלי
;
.
סורוקר, ויקטוריה
;
.
Volume :
31
Co-Authors:

Sharon R., Zahavi T.

Facilitators :
From page:
305
To page:
306
(
Total pages:
2
)
Abstract:

Grape berry moth (Lobesia botrana) is the key pest in the vineyards of Israel and Europe. Pheromone traps are commonly used to monitor the pest population, but there are two major drawbacks: first, the trap monitors only males; second, its implementation is problematic under conditions of mating disruption. The aim of the present study was to identify the preferred cultivars in order to enable the use of their volatiles for improved trapping of males and females. The first step was to identify the cultivar and the grapevine phenological stage preferred by L. botrana in the field. The study was conducted in six vineyards at three locations, from mid March to early September 2002. The moth population was compared by means of pheromone traps monitored weekly. The level of infestation was measured twice during each generation by counting the number of eggs and larvae in 100 clusters in all plots. Six phenological stages of the vines were defined: 'leaf unfolding', 'flowering', 'fruit formation', 'cluster closure', and 'veraison' (first appearance of color in ripening grapes); their development was monitored weekly. The highest number of males was counted in cvs. 'Carignan', 'Colombard' and 'Emerald Riesling'; the least favored cultivar was 'Cabernet'. The preferred phenological stages were leaf unfolding, cluster closure and veraison. There was a combined effect of cultivar and phenological stage: in the leaf unfolding stage the preferred cultivar was Colombard followed by Emerald Riesling and Carignan; during the cluster closure stage the preferred cultivars were Carignan and Emerald, followed by Colombard; during veraison all three were desirable. Moreover, an indication that the same cultivars are preferred by females for oviposition is that more eggs and larvae were found on them than on other cultivars. The preference will be verified in controlled laboratory assays and the most favored ones will be used subsequently for isolation of the attractants. (L)

Note:
Related Files :
Grapevine
insects
Lepidoptera
Lobesia botrana
moth
pests
plant protection
Vitis / grapes
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר מתוך כינוס
;
.
תקציר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55703
Last updated date:
02/03/2022 17:27
Creation date:
22/07/2021 07:51
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Scientific Publication
Attraction of Lobesia botrana to Grapevine Cultivars: A Field Study [abstract]
31

Sharon R., Zahavi T.

Attraction of Lobesia botrana to Grapevine Cultivars: A Field Study

Grape berry moth (Lobesia botrana) is the key pest in the vineyards of Israel and Europe. Pheromone traps are commonly used to monitor the pest population, but there are two major drawbacks: first, the trap monitors only males; second, its implementation is problematic under conditions of mating disruption. The aim of the present study was to identify the preferred cultivars in order to enable the use of their volatiles for improved trapping of males and females. The first step was to identify the cultivar and the grapevine phenological stage preferred by L. botrana in the field. The study was conducted in six vineyards at three locations, from mid March to early September 2002. The moth population was compared by means of pheromone traps monitored weekly. The level of infestation was measured twice during each generation by counting the number of eggs and larvae in 100 clusters in all plots. Six phenological stages of the vines were defined: 'leaf unfolding', 'flowering', 'fruit formation', 'cluster closure', and 'veraison' (first appearance of color in ripening grapes); their development was monitored weekly. The highest number of males was counted in cvs. 'Carignan', 'Colombard' and 'Emerald Riesling'; the least favored cultivar was 'Cabernet'. The preferred phenological stages were leaf unfolding, cluster closure and veraison. There was a combined effect of cultivar and phenological stage: in the leaf unfolding stage the preferred cultivar was Colombard followed by Emerald Riesling and Carignan; during the cluster closure stage the preferred cultivars were Carignan and Emerald, followed by Colombard; during veraison all three were desirable. Moreover, an indication that the same cultivars are preferred by females for oviposition is that more eggs and larvae were found on them than on other cultivars. The preference will be verified in controlled laboratory assays and the most favored ones will be used subsequently for isolation of the attractants. (L)

Scientific Publication
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