Physiological and Sanitary Characterization of Seed Lots of Urochloa brizantha cv. Marandú Marketed in Campo Grande, MS
DOI:
https://doi.org/10.17921/1415-6938.2025v29n4p1033-1041Abstract
In recent years, Brazil has distinguished itself as the world leader in the production, consumption, and export of forage seeds. This position in the agricultural landscape has been consolidated through the use of Urochloa brizantha cv. Marandú seeds. Thus, the aim of this study was to characterize the sanitary and physiological quality of seed lot samples from the 2018-2019 crop of U. brizantha, cultivar Marandú, marketed by four forage seed companies in the city of Campo Grande, MS, obtained in 2020 for analysis and stored in paper bags under average environmental conditions of 21.9°C (temperature) and 68% (relative humidity), respectively. To evaluate the sanitary quality of the seeds, the Blotter Test was performed. Physiological evaluation included a germination test alongside biometric tests, such as seedling length, seedling dry mass, emergence in sand, length of emerged seedlings in sand, dry mass of emerged seedlings in sand, and weight of one thousand seeds. The incidence of various fungi was verified, with 89.2% in samples from company A, 89.7% from company B, 98% from company C, and 86.7% from company D; germination values ranged from 53.2% to 91.2%, and for emergence in sand, all values obtained were below 60% in the U. brizantha cv. Marandú seeds analyzed. The results revealed low sanitary and physiological quality in all batches, regardless of the company, during the period when the tests were conducted.
Keywords: Forage Seeds. Fungi. Germination. Physiological Quality.
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Copyright (c) 2025 Rayani Ferreira Costa , Denise Renata Pedrinho, Geonanna Fátima Silva Nascimento, Ismail Teodoro Souza Junior , Mariane Tico Arce, Bianca Obes Corrêa
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