PT - JOURNAL ARTICLE AU - J. A. Wolpert AU - E. P. Vilas TI - Estimating Vineyard Yields: Introduction to a Simple, Two-Step Method AID - 10.5344/ajev.1992.43.4.384 DP - 1992 Jan 01 TA - American Journal of Enology and Viticulture PG - 384--388 VI - 43 IP - 4 4099 - http://www.ajevonline.org/content/43/4/384.short 4100 - http://www.ajevonline.org/content/43/4/384.full SO - Am J Enol Vitic.1992 Jan 01; 43 AB - Viticulturists and vintners must have accurate estimates of vineyard yields in order to make the necessary plans for a vintage. However, estimating yields is difficult because of inherent variability from vine to vine and block to block. Variability can be accounted for by using proper sampling methods and sample size calculations. The purpose of this article is to briefly review some aspects of sampling and to present a computationally simple, two-step method for yield estimation.