Production regions and physical quality of Urochloa decumbens CV. Basilisk seeds

Silva, Givanildo Zildo da; Martins, Cibele Chalita; Cruz, José Oliveria; Jeromini, Tatiane Sanches; Machado, Carla Gomes

doi:10.14393/bj-v35n1a2019-41749

Cited by 6 publications

(14 citation statements)

References 13 publications

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“…According to Pereira et al The only sample of U. decumbens showed physical purity below that established by legislation, with 41.6% (Figure 4). In a study by Silva et al (2019) approximately 33% of the U. decumbens production fields had seed lots with values below the standards established by the /Ministry of Agriculture for commercialization, with purity between 40.4 and 56.3%. According to Laura et al (2009), in general, this is the species of Urochloa with the lowest purity, with an average of 46.9%.…”

Section: Resultsmentioning

confidence: 97%

“…The coating is an efficient technique for the initial establishment of pastures, facilitating the sowing operation in notillage systems (OLIVEIRA et al, 2003). Silva et al (2019) worked with 10 samples of the cultivar BRS Piatã of the U. brizantha species, coming from several Brazilian states, and observed that in 8 the physical purity was greater than the minimum value for commercialization established by the MAPA norms for the species. Barros Ribeiro et al (2016) also analyzed the same cultivar that was being marketed in Goiânia and found that it had the highest purity, with 96.6%.…”

Section: Resultsmentioning

confidence: 99%

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Quality of forage seeds sold in the state of Mato Grosso

et al. 2021

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The acquisition of high-quality seeds is essential to successfully implant areas with forage. However, to be commercialized, they must meet the minimum quality standards established by law. Inspections are necessary to guarantee the quality and identity of the commercialized seed. Thus, the objective was to evaluate the quality of tropical forage seed species collected in 2018, in the state of Mato Grosso. The survey was based on data from officers’ samples, in commercial establishments and fine consumers, collected during inspections conducted by the Agricultural Defense Institute of the State of Mato Grosso - INDEA-MT and subsequently analyzed by the Guilherme de Abreu Lima Seed Analysis Laboratory (LASGAL). Purity analysis, determination of other seeds by number (DOSN), germination test and tetrazolium test were carried out. The study showed that 75% of the analyzed samples reached the minimum requirements for commercialization in terms of physical purity; 95% of the samples were within the standard for physiological quality determined by law; and 91.9% did not exceed the maximum limits regarding the number of undesirable seeds present in a sample. In general, 36.1% of the total samples analyzed did not conform in some way to quality standards, therefore were not appropriate for commercialization.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Quality of forage seeds sold in the state of Mato Grosso

et al. 2021

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“…The occurrence of precipitations during natural fall and harvesting may lead to deterioration and increase of the incidence of fungi in seeds and also impair the work of harvesting machines (MARCOS-FILHO, 2016;SOUZA, 2001). Thus, in the choice of seed production fields, priority should be given to sites that allow harvesting the field in drought periods (SILVA et al, 2019a). Table 2 presents the results of the physiological quality analysis of seeds that was also different among lots of production fields.…”

Section: Resultsmentioning

confidence: 99%

“…The identification of the conditions that favor production and quality of forage grass seeds allows the recognition of new areas with potential for the implantation of new production fields (MARCOS-FILHO, 2016;SILVA et al, 2019bc;). The selection of the best areas for the production of these seeds enables reducing costs through sectorization logistics, identification of producing areas and production of high-quality seeds (SILVA et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Production fields and physiological quality of Panicum maximum jacq. cv. mombasa seeds

et al. 2020

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The physiological quality of seeds is influenced by the climatic factors of production fields. The identification of the best conditions of P. maximum cv. Mombasa production fields allows the improvement of the seed sector. The aim of this work was to identify which climatic conditions of production fields can affect the physiological quality of P. maximum cv. Mombasa seeds. Nineteen plots from states of São Paulo (six from municipalities of Auriflama and three from Guzolândia) and Goiás (eight from Quirinópolis and two from Serranópolis), were collected by soil sweeping. The following parameters were evaluated: water content, germination rate, first germination count and germination rate index, seedling emergence in sand and field. Completely randomized design was used for all variables, with the exception of seedling emergence in field, since this variable required block design. Means were compared by the Scott-Knott test, at 5% probability. For the identification of the influence of climatic conditions on the physiological quality of seeds, multivariate statistical analysis was applied through Group and Principal Component Analysis. Production fields of Panicum maximum cv. Mombasa seeds presenting maximum temperatures above 32 ºC at flowering and natural fall stages produce seeds of low physiological quality. Production fields in which precipitation and high temperatures occur during natural fall and harvest of P. maximum cv. Mombasa seeds are not favorable to the production of seeds with high physiological quality.

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“…Neste sentido, embora diversos estudos avaliem a qualidade física e fisiológica de sementes de Urochloa (FRANÇA-NETO, 2009;FONTANELI et al, 2012;SILVA, 2013;CARDOSO et al, 2014;BATISTA et al, 2016;SILVA et al, 2019), gênero com maior produção de sementes pelo Brasil, avaliações referentes ao gênero Megathyrsus ainda são limitadas. Em um dos poucos estudos de lotes de capimcolonião, Ohlson et al (2010) avaliaram sementes do gênero comercializados no Estado do Paraná e verificaram que a maioria dos lotes não atendeu o padrão mínimo legal exigido quanto a pureza e que, neste caso, o teste de germinação não era nem realizado.…”

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Qualidade Física e Fisiológica de Sementes Comercializadas de Capim-Colonião em Campo Grande - MS

et al. 2020

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O Centro-Oeste brasileiro representa a região brasileira com maior área e produção de sementes de Megathyrsus maximus, uma gramínea muito utilizada para a formação de pastagens em regiões tropicais do Brasil e outros países da América. Objetivou-se no presente estudo diagnosticar a qualidade física e fisiológica de sementes de três cultivares da espécie M. maximus (Mombaça, BRS Tamani e BRS Zuri) comercializadas por diferentes empresas de Campo Grande (MS). Os experimentos foram conduzidos utilizando-se sementes da safra 2017-2018 em um delineamento inteiramente casualizado, em esquema fatorial 3 x 6, avaliando-se três cultivares e seis procedências. As variáveis analisadas foram: pureza física, peso de mil sementes, primeira contagem do teste de germinação, germinação, valor cultural e teste de tetrazólio. Os resultados encontrados demonstram que, com exceção de um lote da cultivar Mombaça, os demais lotes das três cultivares da espécie Megathyrsus maximus (Mombaça, BRS Tamani e BRS Zuri), de todas as procedências avaliadas, apresentaram qualidade física e fisiológica compatível com a comercialização em função da legislação vigente. No entanto, é possível encontrar lotes com qualidade distinta no mercado de Campo Grande. Assim, a escolha adequada da procedência (empresa) vai garantir a expressão máxima do potencial genético, subsidiada por processos adequados de produção e pós-colheita. Palavras-chave: Megathyrsus Mombaça. Gramíneas Tropicais. Teste de Germinação. Teste de Tetrazólio. Valor Cultural. Abstract Brazilian's Midwest represents the region with the largest area and production of Megathyrsus maximus seeds, a grass widely used for the pastures formation in tropical regions of Brazil and other countries in America.The objective of this study was to diagnose the physical and physiological quality of seeds of three cultivars of the species Megathyrsus maximus (Mombaça, BRS Tamani and BRS Zuri) commercialized by different companies of Campo Grande (MS). The experiments were conducted using seeds of the 2017-2018 harvest, in a completely randomized design, using a factorial scheme 3 x 6, with three species and six sources, totaling 18 treatments. The variables analyzed were: physical purity, weight of one thousand seeds, first count of germination test, germination, cultural value and tetrazolium. The results showed that with the exception of one lot of cultivar Mombaça, the other lots of the three cultivars of species Megathyrsus maximus (Mombasa, BRS Tamani and BRS Zuri), of all provenances, have compatible physical and physiological quality with marketing in accordance with current legislation. However, it is possible to find lots of different quality in the Campo Grande market. Thus, the appropriate choice of source (company) will guarantee the maximum expression of genetic potential, subsidized by adequate production and post-harvest processes. Keywords: Megathyrsus mombaça. Tropical Grasses. Germination Test. Tetrazolium Test. Cultural Value.

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Production regions and physical quality of Urochloa decumbens CV. Basilisk seeds

Cited by 6 publications

References 13 publications

Quality of forage seeds sold in the state of Mato Grosso

Quality of forage seeds sold in the state of Mato Grosso

Production fields and physiological quality of Panicum maximum jacq. cv. mombasa seeds

Qualidade Física e Fisiológica de Sementes Comercializadas de Capim-Colonião em Campo Grande - MS

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