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Abstract
The objective of this work to evaluate the official results of seeds quality of ryegrass, black oat grass, sudangrass and pearl millet, originated from commercial establishments from the State of Santa Catarina. Lots of forage seeds sampled in the state of Santa Catarina in the year of 2013 to 2015, presented low physiologic and physic quality, being the main criteria of disapproval the physic purity and germination. The samples of forage seeds from C1 and C2 categories collected in Santa Catarina present superior quality in relation to the non-certified S1 and S2. The quality of ryegrass seeds (national) showed below the legal standards established, independent of the year, for the physic purity and germination criteria. Although, for the ryegrass lots (imported) there was none disapproval related to germination and physic purity being out of the tolerated limits.The germination and physic purity indexes, for sudangrass lots presented conformity index adequate to the tolerated limits allowed by legal standards. In the other hand, for the same species, the criteria for number of other cultivated species presented 100% of disapproval for the analyzed lots in the non-certified categories in 2013. Lots of pearl millet seeds, with exception of those from the C2 category sampled in 2014, presented in conformity to the legal standards required, being, in comparison with the other species, the one that showed lower non-conformity degree in the analyzed period.
Highlights
The productive chain of Brazilian forage seeds has considerably grown in last years and, alongside this development, the market is demonstrating ascendant demand for materials that are sound, high physiologic quality and low financial cost (Ohlson et al, 2009; Kavalco et al, 2016; Szareski et al, 2018a)
The same way, in relation to the samples of imported cultivars, the samebehaviorwas observed in the national samples, for each it was collected only samples from the S1 and S2 samples, with 7, 11 and 21 collected samples in the years 2013, 2014 and 2015, respectively (Table 2). These results demonstrate a probable increase in the use of imported ryegrass in the State of Santa Catarina and more rigor in the external quality control (CEQ) in this state, since it occurred a considerable rise in the number of collected samples during the years under evaluation
Lots of forage seeds sampled in the state of Santa Catarina in the year of 2013 to 2015, presented low physiologic and physic quality, being the main criteria of disapproval the physic purity and germination
Summary
The productive chain of Brazilian forage seeds has considerably grown in last years and, alongside this development, the market is demonstrating ascendant demand for materials that are sound, high physiologic quality and low financial cost (Ohlson et al, 2009; Kavalco et al, 2016; Szareski et al, 2018a). This rise is evidenced in large milk production centers, as is the case of the Santa Catarina state, which requires the implementation of pasture in order to supply the animals’ nutritive demand, mostly in winter periods. Outside the certification system, it were instituted the seeds of first generation (S1) and seeds of second generation (S2) (Brasil, 2003)
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