This work was carried out with peanut seeds, cv.'Tatu', in a randomized block design with three replications with aimed in the evaluate physical and physiological qualities of peanut seed from plants cultivated with various phosphogypsum sources, combined with application time and method no limed area. The treatments were of phosphogypsum rates (zero, 400, 800, 1200kg/ha), application times at sowing or flowering and application method (total area or in furrows). Sowing fertilization consisted of phosphorus (80kg/ha of P2O5) and potassium (30kg/ha of K2O). Seed quality was evaluated by weight of 100 seeds, germination, vigor (first germination counting, accelerated aging, eletric conductivity and field seedling emergence) tests and evaluation of macronutrient levels in seeds. Phosphogypsum, independently of rate, application time and application method, was benefical for the seed quality. The phosphogypsum application at total area was uppermost benefical for the seed quality at application in furrows. The phosphogypsum sources in function application method influence the seed content of N, K and Mg. The fertilization with P and K highed the seed contents of N and P.
Arachis hypogaea; phosphogypsum; calcium; vigor; nutrient
