Abstract
Plathymenia reticulata Benth occurs in open formations of the Brazilian Cerrado and Atlantic Forest. The seeds are affected by pathogens that reduce germination. The use of fungicides is defined for many species, but, for forest species, further studies are necessary. Thus, the aim of this study was to evaluate and identify the physical and physiological quality of mahogany seeds that are coated with fertilizer and fungicide. The treatments were: seed coating with sand + lime + fungicide with different doses of fertilizers. The seeds were evaluated in the laboratory and in a greenhouse. The experiment was conducted in a completely randomized design with four replications of 50 seeds. The treatment with 50 g of fertilizer had the highest weight out of 1000 seeds. There were no infested seedlings among the coated seeds. The coating maintained the quality of the seeds and the coating with high doses of fertilizer inhibited the germination, germination speed index (GSI), emergence and emergence speed index (ESI) of the mahogany seed. Keywords: Plathymenia reticulata, germination, vigor, fungicide
Highlights
Plathymenia reticulata Benth is popularly known as vinhático-do-campo or vinhático-do-cerrado (Brazilian mahogany)
Polyvinyl acetate (PVA) glue diluted in water heated at the temperature of 70°C was used at a ratio of 1: 1 (v/v), according to Mendonça et al (2007)
For the thousand seed weight (TSW), a significant increase was observed after the coating and after the increase in the TSW, in the order of 1.77 to 5.32 g in coated seeds, when compared with uncoated seeds (Table 1)
Summary
Plathymenia reticulata Benth is popularly known as vinhático-do-campo or vinhático-do-cerrado (Brazilian mahogany). Studies related to the cultivation of native species have increased significantly due to the increased demand for forest deployment for various purposes, but there is still a lot to advance regarding the specificities of each botanical group in the field of seed technology or in the field of ideal nutrition for planting. According to Gonçalves et al (2012), there are few studies on nutritional requirements of forest species, but knowledge of proper nutrition of each species plays an important role in plant development. As the understanding of the seed value and the need to protect or enhance their performance increases, it increases the quantity of products available for the treatment of seeds, for various purposes, either for protection, with the use of fungicides and insecticides, or nutrition, with the use of nutrients, when.
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