Technology of Preparation of Seeds of Rod-Shaped Millet (Panicumv Virgatum L.)

Abstract

Goal. Development of technology for preparation of seeds of rod-shaped millet for sowing, which would reduce the biological state of rest and significantly increase its germination. Methods. Field, laboratory, visual, measuring and weighing, mathematical and statistical. Results. The technology of preparation of seeds of rod-shaped millet for sowing has been developed and scientifically proved. It includes coarse cleaning of large and small impurities, sorting by aerodynamic properties and specific mass to obtain seeds with high quality. It has been found that sorting of seeds of rod-shaped millet by aerodynamic properties is an effective technique. Even at an air velocity in the aspiration duct of 5.8 m/s. seed germination increased substantially - by 10%, and the mass of 1000 pieces - by 1.2 times compared to the control - without sorting. Increase in air velocity to 7.0 m/s. did not provide a significant increase in seed germination compared to the variant, where the air velocity was 5.8 m/s, and the loss of seeds in waste increased by 36.8%. The optimal sorting mode is one in which 32% of the seed falls into the waste, which provides a significant increase in the germination of the treated seeds. The most effective way to increase seed germination is to sort the seeds by specific mass, which is advisable to carry out in two stages. For the first main sorting the longitudinal angle of inclination of the working surface of the pneumatic table should be 2.00, transverse - 0.50, for repeated sorting: longitudinal - 2.50, transverse - 0.50. The frequency of oscillation of the working surface of the pneumatic table should be within 425-440 oscillations / minute. Conclusions. The developed technology of preparation of seeds of rod-shaped millet is not energy-intensive and it can be used in seed farms that have air-grate machine, aspiration column and pneumatic table.