Abstract

TUNES*, Carla Dias et al. Soybean seed (Glycine max (L.) Merr) physiological performance treated with phytochemical products in several germination substrates. Rev. de Ciências Agrárias [online]. 2020, vol.43, n.2, pp.104-122.  Epub July 07, 2020. ISSN 0871-018X.  https://doi.org/10.19084/rca.19755.

Since there are no standardized standards for carrying out laboratory tests with chemically treated soybean seeds, the objective was to evaluate the physiological performance of soybean seeds treated by phytochemicals on the standard substrates (paper roll and between sand) indicated by the Rules for Seed Analysis and on substrates classified as alternative (vermiculite between paper and sand between paper). For that, seeds of different soybean cultivars were used treated with fungicides and/or insecticides (Maxim Advanced®, CropStar®, Rocks® and Cruiser® 350 FS), sown on standard substrates and on alternative substrates. The study was carried out in a completely randomized design in a bifactorial scheme, with four replications. The variables first count, abnormal seedlings and germination were evaluated. The cultivars ‘Elite IPRO’ and ‘2606 IPRO’ showed interaction of factors with lower results regarding the physiological quality of seeds treated with imidacloprid + thiodicarb, while ‘7161 RR’, also with significant interaction, little varied between treatments. ‘6410 IPRO’, ‘7062 IPRO’ and ‘15630 IPRO’ showed evidence of a negative relationship in the presence of the active ingredient imidacloprid with a positive emphasis on the use of the substrate sand instead of paper. The cultivar ‘7209 IPRO’ was more stable, without significant interaction, but with better results for untreated seeds and treated with thiamethoxam, as well as for the substrate sand. It is possible to observe divergences between cultivars and negative effects of products containing imidacloprid, mainly in the paper substrate.

Keywords : Glycine max; chemical treatment; Rules for Seed Analysis.

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