“…Methodologies from Smith (1938) and Hatheway (1961) can be applied to calculate the optimal plot size according to the number of treatments, number of repetitions, and experimental precision. These methodologies have been used in grain sorghum (Lopes et al, 2005;Brum et al, 2008), sunflower (Sousa et al, 2016), banana (Donato et al, 2018), forage palm (Guimarães et al, 2020), buckwheat (Cargnelutti Filho et al, 2020a), and tomato (Oliveira et al, 2021). It has still been used, in single and intercropped cultivation of black oat + vetch (Cargnelutti Filho et al, 2020b), millet + slender leaf rattlebox (Cargnelutti Filho et al, 2021a), millet + showy rattlebox (Cargnelutti Filho et al, 2021b), and intercropping of black oat + common vetch + forage turnip (Cargnelutti Filho et al, 2022).…”