Coating with fungicide and different doses of fertilizer in vinhatico seeds

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.

Physiological Potential of Seeds of Perennial Soybean cv. Comum Coated with Different Materials

“…The use of the temperature of 40˚C was also efficient in drying coated seeds of Stylosanthes, perennial soybean, and Persea indica [11] [18] [19], which reinforces the effectiveness of this seed-coating method.…”

“…The authors observed increases of 100% to 150%, respectively, in TSW, when these materials were added. Likewise, [19] observed increases of up to 100% in the TSW of Persea indica as they increased the doses of NPK fertilizer added to the filler with sand and limestone. According to [11], the texture of limestone and sand favor the formation of a structure with more granules around the seed, which consequently increases its mass.…”

Coating with Different Doses of Fertilizer in <i>Vinhático</i> Seeds

“…For seed coating, we used, as filling material, sand + limestone [9] and increasing doses of fertilizer NPK 4-14-7 + boron and zinc, being the following treatments: T1: sand + limestone; T2: sand + limestone + 25 g of fertilizer (mixture of N-P-K + boron and zinc); T3: sand + limestone + 50 g of fertilizer; T4:…”