Seed coating has potential to become a strong factor in the seed sector. It allows farmers to add a vast variety of materials to the seed. This project had the objective of studying the effects of sources and doses of phosphorous added to the soybean seed by coating. It involved four doses of phytic acid and bicalcic phosphate, which were: 0.0; 0.7; 1.4 and 2.1g/100g seeds. The treatments were evaluated in two types of soil: high and low phosphorous availability, obtained from a soil with initial P content of 10.5 mg dm-3, in which in one type of soil 60kg ha-1 of super triple phosphate was applied while nothing was applied to correct the P content in the other soil. The polymer used in seed coating was applied at 0.8 ml/100g of seeds. A randomized complete block design was used with three replications. It was used vases with 12 L of capacity with three plants per experimental units. The following parameters were evaluated: number of seeds per plants, weight of seeds per plants and the weight of a thousand seeds.. It was concluded that seed coating of soybeans seeds with phosphorous increased productivity according to doses and phosphorous sources. The dosage of 21 grams of phytic acid per 1 kilo of seeds increased the yield by more than 14%.
Glycine max; seed analysis; germination; physiological potential
