dogwood_anthracnose {epiphy}

Incidence of dogwood anthracnose.

Description

Incidence data from the Dogwood Anthracnose Impact Assessment Program for 1990 and 1991, in the Southeast of the USA, reported by Zarnoch et al (1995). Only plots with exactly n = 10 dogwood trees are present in the data set (168 and 161 plots in 1990 and 1991, respectively).

Usage

dogwood_anthracnose

Format

A data frame with 329 rows and 3 variables:

[, 1]	t	Year of disease assessments (1990 or 1991)..
[, 2]	i	Number of diseased plants (from 0 to 10).
[, 3]	n	Sampling unit size. Here, n = 10 plants per sampling unit (or plot).

Source

Zarnoch SJ, Anderson RL, Sheffield RM. 1995. Using the \beta-binomial distribution to characterize forest health. Canadian journal of forest research 25, 462–469.