ABSTRACT
With the objective of defining the water depth and interval of irrigation of a groundnut crop, cultivar BR1, an experiment was conducted in Rodelas-BA during the years of 1994 and 1995. The soil at the experimental area was classified as Regossol, with more than 89% of sand in the depth profile of 0 to 80cm. The evaporative demand at the site was more than 8mm per day. Furrow irrigation was used with a 3 x 3 factorial analysis scheme in a randomized block design with three different levels, 300; 500 and 700mm and three different intervals of irrigation, 2, 4 and 6 days. It was verified that the groundnut production, with and without shell, was significantly affected by both the factors under study. The maximum yield was obtained for the treatment of 700mm/4 days and the minimum yield was obtained for the treatment of 300mm/6 days. The yield index for the groundnut seeds was maximum, 37.48% for the treatment of 700mm/6 days and the minimum, and 16.87% for the treatment of 300mm/4 days.
Key words:
Arachis hypogaea; yield index; production function; oil content