Journal
CROP PROTECTION
Volume 29, Issue 5, Pages 435-439Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2009.10.008
Keywords
Bird; Damage; Assessment; Technique; Measurement
Categories
Funding
- Bureau of Rural Sciences
- Invasive Animals Cooperative Research Centre and Industry
- Investment New South Wales
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Bird damage is a world-wide problem in agriculture. Measurement of such damage is an important first step in its effective management. We develop a visual assessment technique and a progressive sampling strategy using 5 strata and suggest sample sizes necessary to achieve an estimate of bird damage within a standard error of 5%. This strategy improved sampling efficiency by 67%, 79% and 80% compared to stratified systematic, standard systematic and random sampling. With an average cost of under $(AUS) 6 per block this technique is a rapid inexpensive method to estimate bird damage to vineyards and has application to most crop-bird situations. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
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