Processing on the physical and physiological quality of seeds of Guinea grass

Melo, Lilian Faria de; Martins, Cibele Chalita; Silva, Givanildo Zildo da; Boneti, João Eduardo Brandão; Vieira, Roberval Daiton

doi:10.5935/1806-6690.20160080

Cited by 12 publications

(13 citation statements)

References 14 publications

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“…The water content of U. decumbens seeds from the 15 lots ranged from 8.5 to 10.5% (Table 2). The similarity in the water content values of seeds is essential for the quality analysis tests not to be affected by differences in metabolic activity, wetting rate and seed deterioration intensity (STEINER et al, 2011;MELO et al, 2016a;SILVA et al, 2017;MELO et al, 2018). According to the results of the tetrazolium test, seed viability ranged from 77 to 92%.…”

Section: Resultsmentioning

confidence: 99%

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

Silva¹,

Martins²,

Cruz³

et al. 2019

Biosci. J.

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Brazil is the largest world producer, consumer and exporter of forage grass seeds. Urochloa decumbens Stapf. species is the second in importance in the Brazilian market of seeds of tropical forage grasses. Seeds are harvested by the soil sweeping method and, in addition to other impurities, harvested lots can present weed seeds, which makes seeds unfeasible for commercialization. The aim of the present study was to evaluate differences in the physical quality and viability of Urochloa decumbens cv. Basilisk seeds produced in different production fields. Fifteen U. decumbens seed lots from the State of São Paulo (1 lot in the municipality of Cássia dos Coqueiros and 3 lots in the municipality of Santo Antônio da Alegria), Minas Gerais (2 lots in the municipality of Tupaciguara, 2 lots in the municipality of Unaí, 2 lots in the municipality of Chapada Gaúcha and 3 lots in the municipality of Monte Santo de Minas), Goiás (1 lot in the municipality of Jataí) and Mato Grosso (1 lot in the municipality of Primavera do Leste) were evaluated by means of the following parameters: water content, viability by tetrazolium test, purity, determination of other seeds by number and weight of one thousand seeds. A completely randomized design was used, and when significant, the means of treatments were compared by the Scott Knott test at 5% probability. The fields of the different regions produce U. decumbens seeds with high variability in physical quality. U. decumbens seeds with the highest physical quality and viability were produced in Cassia dos Coqueiros-SP.

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Section: Resultsmentioning

confidence: 99%

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

Silva¹,

Martins²,

Cruz³

et al. 2019

Biosci. J.

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“…Constant improvement of seed-processing technologies is fundamental for the agricultural sector, since the current market is demanding and aware of the importance of quality (Melo et al, 2016). Seed coating is a technique capable of altering the physical traits of seeds which allows the seed producer to add mineral salts, fungicides or insecticides as necessary, thereby adding value to the seed for marketing (Derré et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Digital image processing of coated perennial-soybean seeds and correlation with physiological atributes

Justino

Vieira

2020

J. Seed Sci.

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Perennial soybean (Neonotonia wightii) is a Fabaceae with potential to be used in consortium with Poaceae plants to improve pasture quality. In order to add value to perennial soybean seeds and improve their seed distribution, seeds coated with different materials in coating machine were characterized by digital image analysis and physical attributes related to physiological attributes in order to define the ideal amount and material to be used in the coating. Different material quantities were tested, 150 g, 200 g and 250 g, divided into layers, namely: sand, calcium silicate + sand and limestone + sand. Coating promoted maximum increments of approximately 350% in seed mass and significant increases of up to 230% in area, 154% in maximum diameter, 162% in minimum diameter, 167% in contained diameter and 152% in perimeter. The coating was also efficient in reducing the moisture of the pellets by increasing the layers that cover the seeds. The sand + limestone combination resulted in the largest pellets. The combination of sand + silicate did not interfere with plant speed and formation. Thus, it was considered the appropriate material for the coating of perennial soybean seeds.

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“…Estes resultados evidenciam que a mesa de gravidade foi capaz de direcionar as sementes de menor peso para a parte inferior, que vai ao encontro dos resultados obtidos em sementes de capim-mombaça e soja (Lorenset et al, 2017;Melo et al, 2016).…”

Section: Resultsunclassified

Qualidade física e fisiológica de sementes de cártamo submetidas ao beneficiamento em mesa de gravidade

Macedo

Dörr

Gularte

et al. 2020

BJAER

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The use of alternative crops in the off-season becomes interesting in the rotation system this system provides breaking of disease cycles, assisting in the control of weeds and insects. Safflower culture meets these precepts for use in this way in the state of Rio Grande do Sul, as well as assisting on the decompression and translocation of nutrients in the soil, as the root system can reach up to two meters deep. The experiment was constituted by 40 treatments, involving two factors: factor Aeight lots of safflower seed, factor Bfive collection points at the gravity table. Was utilized the delineation in a subdivided plot in factorial scheme (8X5), with four replicates. The seeds were subjected to the following determinations: specific mass, a thousand seeds mass, germination, first germination count, seedling emergence, full seedling length, full dry mass of the seedlings. The objective of this study was to evaluate the physical and physiological quality of seeds of Safflower (Carthamus tinctorius (L)) submitted to processing on the gravity table with different lots. The seeds collected at the upper exit of the desymmetric table presented the best characteristics, as well as the best characteristics observed compared to the seeds that didn´t processing.

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Processing on the physical and physiological quality of seeds of Guinea grass

Cited by 12 publications

References 14 publications

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

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

Digital image processing of coated perennial-soybean seeds and correlation with physiological atributes

Qualidade física e fisiológica de sementes de cártamo submetidas ao beneficiamento em mesa de gravidade

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