The ideal size and shape of plots for green pepper experiments under protected environments was determined. Two experiments were conducted in plastic green house, in 2001, in the summer-fall and in the winter-spring season, evaluating the fruit weight. The plants were laid out in ten lines of twenty meters length, and in each line were allocated seventy plants. The estimates of the plot size and shape were obtained by the maxim curvature, variable comparison and Hatheway methods. Applying these methods we could conclude that the plot size and shape estimates are similar considering the maximum curvature and Hatheway methods and with the cultivation seasons. Each plot must have two plants long a five plants width, with a total of ten plants per plot.
Capsicum annum; protected environment; experiment planning; quality control; experimental precision
