Quality of Grain Sorghum Seeds Coated with Different Combinations of Materials

Abstract

Sorghum (Sorghum bicolor) is the fifth most cultivated cereal in the world, has high liquidity in the market due to its nutritional and edaphoclimatic characteristics, however, because it is cultivated in marginal conditions, it presents productivity below its potential. The seed coating technique appears to optimize the cultivation of sorghum. The objective of this work was to analyze the quality of graniferous sorghum seeds coated with different filling materials and proportions of glue as a cementing material. After covering, the physical and physiological characteristics of the seeds and the initial development of plants in the greenhouse were evaluated. It was found that the coating with calcium silicate provided the best physical characteristics to the seeds with the highest adherence rates, total area, maximum and minimum diameter. The coatings with dolomitic limestone and dolomitic limestone + sand provided the best physiological performance of the seeds with the highest germination values ​​and root dry matter. The proportion of cementitious material 3: 1 provided good results in addition to being more economical. It is concluded that the combination of the filling material and the cementing material used in the coating of graniferous sorghum seeds interferes with their physiological performance and physical aspect.

Physical-physiological quality and early performance of sorghum plants under different boron doses via seed

“…The substrate received daily irrigations and, at 15, 30, and 45 days after sowing, 500 mL of 25% complete nutrient solution, devoid of B, was applied to each pot. The final evaluation of seedlings was carried out 60 days after sowing; (Batista, Vieira, Pires, Baroni, & Silva, 2020). 2) Emergence Speed Index (ESI), which was conducted together with E%, was determined by daily counting of emerged seedlings (i.e., showing cotyledons above the surface of the substrate), from the beginning until the 30th day after sowing.…”

“…After E%, 10 plants from each experimental unit were selected and split into shoot and root, which were measured for length using a millimeter rule. Then, they were stored in paper bags and placed in an air circulation oven at 65 ° C for 72 hours for further dry mass measures (Batista et al, 2020). Seeds were also dried at 65 °C for 72 hours.…”