Desempenho de sementes de trigo revestidas com duas fontes de fósforo

Abstract

The high quality seed is the starting point to have uniform stand of seedlings, proper crop and therefore higher productivity. Many methods and technologies were developed and are available for the improvement of seed performance, among these, the seed coating technology is highly effective in protecting seeds, because it improves the determination of pesticides used in seed treatment and allows the addition of several other products that promote the development of seedlings. Given this, the aim of this study was to evaluate the performance of wheat seeds depending on the use of different sources and doses of phosphorus in the seed coating. We used five seed lots of BRS - Guamirim coated with four doses of phytin (0.00 g, 0.66 g, 1.33 g and 2.00 g.100 g-1 of seed) and four doses of phosphate (0.00 g, 1.78 g, 3.56 g and 5.34 g.100 g-1 of seed). We used the Polivinilpirolidona polymer (PVP) at a dose of 1.5 mL.100 g-1 of seeds to ensure adherence to the seed match. After the treatment was performed sowing and conducted by the end of the cycle, following the technical recommendations for the crop. The experiment was conducted in pots with 15 kg of soil in greenhouse in a randomized block experimental design with three replications. The evaluations were length and dry mass of shoot and root dry mass and height of plants, number of ears per plant, weight of seeds per plant, number of seeds per plant, weight of 1000 seeds, hectolitre weight. Based on the results reached the following conclusions, the seed coating with phosphorus increases the performance of wheat seeds, the phosphor coating of the seeds via increases productivity by at least 6% of the total mass of grains, sources of phytin phosphorus and phosphate have similar positive effects on performance of wheat seeds.