Substratos alternativos para teste de germinação em sementes de soja tratadas quimicamente

Abstract

The soybean crop (Glycine max (L.)) is one of the most significant crops in the agribusiness sector and, therefore, it is extremely important to use seeds of high physiological quality. For seed commercialization, the seed analysis bulletin is required, one of the tests used is germination, however there is no specific methodological method for treated seed. Thus, the present work aimed to analyze the performance of soybean seeds treated with insecticides, nutrients, inoculants and biological nematicide in the germination test, using the substrates described by the Rules for Analysis of Seeds and Alternative Substrates. In experiment 1, seed treated with insecticides chlorantraniliprole+ fipronil was analyzed in the germination test with 7 substrates (germitest® paper, sand between paper, soil between paper, charcoal between paper, vermiculite between paper and S10-B between paper) to obtain reliable results. In a 7x6 two-factor scheme (seven lots and six substrates), emergence tests, first count of the germination test, germination, shoot length, root part length and total length were evaluated. It is concluded that for the variables analyzed, the soil substrate between paper and S10-B between paper presented better results and vermiculite and paper obtained lower results. In experiment 2, the performance of 8 lots of soybean treated with chlorantraniliprole+ fipronil+ monoethanolamine molybdate and cobalt oxide+ bradyrhizobium japonicum+bacillus amyloliquefaciens was analyzed in the germination test by comparing the substrates described by the RAS (germitest® paper) with alternative substrates (soil between paper, sand between paper, coal between paper, S10-B between paper and vermiculite between paper). In a two-factor 8x6 scheme (eight lots and six substrates), emergence tests, first count of the germination test, germination, shoot length, root part length and total length were evaluated. It is concluded that for this treatment, the substrates soil between paper and S10-B between paper presented better results, compared to paper that presented inferiority for the variables studied.