thumbnail

Estimating bird damage from damage incidence in wine grape vineyards

American Journal of Enology and Viticulture

By:
,

Links

Abstract

Bird damage was measured during 1977 and 1978 at 32 wine grape vineyards in the San Joaquin Valley and North Coastal Region of California. Both the percentage bird loss (PBL) and the percentage of bunches damaged (BDI = bird damage incidence) were determined during 55 total-damage assessments, and the resulting data pairs were used to develop a regression of PBL on BDI. The final prediction equation was loge (PBL + 1) = 0.0385 BDI, for which the SE = 9.6297 10-4, and it accounted for 97% of the observed variation. We conclude that by using that equation, reasonably accurate predictions of PBL can be obtained from relatively quick and inexpensive estimates of BDI. Guidelines for the use of the prediction method and the accuracy of some PBL predictions are discussed.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Estimating bird damage from damage incidence in wine grape vineyards
Series title:
American Journal of Enology and Viticulture
Volume
32
Issue:
1
Year Published:
1981
Language:
English
Contributing office(s):
Western Ecological Research Center
Description:
p. 1-4
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Journal of Enology and Viticulture
First page:
1
Last page:
4
Number of Pages:
4