R/ex7.r

In ExpDes: Experimental Designs Package

#' Height of corn plants 21 days after emergence.
#'
#' @description We evaluated the height of corn plants 21 days
#' after emergence under infestation of stink bugs (Dichelops)
#' at different times of coexistence (period) and infestation
#' levels (level). Additional treatment is period zero and
#' level zero.
#' @docType data
#' @keywords datasets
#' @name ex7
#' @usage data(ex7)
#' @format Data frame with 80 observations on the following 4
#' variables.
#'   \describe{
#'    \item{\code{periodo}}{a factor with levels \code{0-7DAE}
#'    \code{0-14DAE} \code{0-21DAE} \code{7-14DAE}
#'    \code{7-21DAE}}
#'    \item{\code{nivel}}{a numeric vector}
#'    \item{\code{bloco}}{a numeric vector}
#'    \item{\code{est21}}{a numeric vector}
#'    }
#'    @references RODRIGUES, R. B. Danos do
#'    percevejo-barriga-verde Dichelops melacanthus (Dallas,
#'    1851) (Hemiptera: Pentatomidae) na cultura do milho.
#'    2011. 105f. Dissertacao (Mestrado em Agronomia -
#'    Universidade Federal de Santa Maria, Santa Maria, 2011.
#' @author Eric Batista Ferreira,
#'  \email{eric.ferreira@@unifal-mg.edu.br}
NULL