Most Brazilian soils have deficiencies of B and Zn, and demand the supply of these nutrients so that production is not hampered. The present study aimed to test the application methodology and doses of B and Zn in perennial soybean seeds. The physical, physiological and nutritional characteristics of the covered seeds and the initial growth of the plants were evaluated in laboratory and greenhouse. Two methodologies were used for the application of micronutrients. In Method 1, the B and Zn doses were added once in the 6 th coating layer, followed by a jet of glue, after the first portion of lime + glue. In Method 2, the doses of micronutrient were divided into four equal and individual portions, to be applied to the 3 rd , 6 th , 9 th and 12 th layers followed by a jet of glue. This was added after the first portion of lime + glue. For both the methods, 7 treatments were defined: TR1 -Seeds without coat; TR2 -Coated seeds without micronutrients; TR3 -50 g of H 3 BO 3 kg-¹ of seeds + 50 g of ZnSO 4 kg-¹ of seeds; TR4 -100 g of H 3 BO 3 kg-¹ of seeds + 50 g of ZnSO 4 kg-¹ of seeds; TR5 -150 g of H 3 BO 3 kg-¹ of seeds + 50 g of ZnSO 4 kg-¹ of seeds; TR6 -150 g of H 3 BO 3 kg-¹ of seeds + 100 g of ZnSO 4 kg-¹ of seeds; TR7 -200 g of H 3 BO 3 kg-¹ of seeds + 100 g of ZnSO 4 kg-¹ of seeds. For laboratory tests, a completely randomised design was performed, and randomised

The objective of this work was to study combinations of high doses of boron (B) and zinc (Zn) in the recoating of perennial soybean seeds, in order to provide these nutrients to the future plants. The physical, physiological and nutritional characteristics of the coated seeds and initial development of plants in a greenhouse were evaluated. Tests carried out in the laboratory were conducted in a completely randomized design, and the experiments completed in a greenhouse were a randomized block design. The coating with the dose 0.8 kg of H 3 BO 3 + 0.8 kg of ZnSO 4. kg-¹ of seeds provides the best quality coating. The combination of B and Zn in seed coating reduces the production of shoot dry matter, while the other treatments do not affect the growth variables of the plants. Plants absorb and accumulate the micronutrients added to the coating of the seeds.

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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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.