| 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. |
| Genre: | Article |
| ProdID: | 1007523 |
| Citation Author: | DeHaven, R. W.; Hothem, R. L. |
| Citation Contributing Office: | Western Ecological Research Center |
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| Citation End Page: | 4 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Journal of Enology and Viticulture |
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| Citation Number Of Pages: | 4 |
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| Citation Phsyical Description: | p. 1-4 |
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| Citation Search Results Text: | Estimating bird damage from damage incidence in wine grape vineyards; 1981; Article; Journal; American Journal of Enology and Viticulture; DeHaven, R. W.; Hothem, R. L. |
| Citation Start Page: | 1 |
| Citation Volume: | 32 |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Estimating bird damage from damage incidence in wine grape vineyards; 1981; Article; Journal; American Journal of Enology and Viticulture; DeHaven, R. W.; Hothem, R. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.ajevonline.org/content/32/1/1.abstract |
| Date Other: | Thu, 1 Jan 1981 00:00 -0600 |
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