Influence of seeding rates on yield and technological qualities of hemp fiber

Abstract

When solving problems aimed at increasing the yield of cannabis and the marketability of the industry, improving the quality of products and reducing its cost, and ultimately restoring the previous size of the sown area, seed seeding rates are of great importance. Research in our experiments was carried out with a hashish-free variety of monoecious cannabis of the Central Russian type Diana. Studies have shown that in thickened crops by the time of harvesting, the number of fallen plants reaches 5-19 pieces per 1 m2 or 3.79-10.67%. The dependence of plant height on the area of nutrition is most clearly shown in the flowering phase: with a decrease in seed seeding rates, the height of plants increases. In this phase, the greatest growth of plants occurs, which reaches 87.7-119.1 cm. With the expansion of the area of supply is greatly enhanced by the formation of items such as plant height, stem thickness at the root collar and the base of the inflorescence, the mass of the stem, which together determine the length of the inflorescence of the plant. With the thickening of crops, the yield of stems and fibers tends to increase. The highest yield of stems and fiber was obtained at a seeding rate of 3.2 million units per 1 ha. With an increase in the seeding rate, the yield of total and long fiber increases. The yield of short fiber decreases noticeably with an increase in the seeding rate. The highest yield of long fiber 26% was provided by thickened sowing with a seeding rate of 3.2 million units per 1 ha.