Study on Improving the Emergence of Direct Sowing Sugar Beets (Part 1)

Improving Emergence Rate by Press Roller Attached to Seeder

Abstract

In order to ensure that the emergence rate of sugar beets is greater than 85%, the optimum pressure of the press roller attached to the Seeder and the pulverized ratio of the prepared soil were evaluated for several fields. In andosol fields, an 85% emergence rate was realized when the field showed 60% of less than 4.75-mm clod size distribution and soil at a depth of 10-20cm had a cone index higher than 1.1MPa.
Multiple regression analysis performed for soil from lowland fields showed that it had a highly significance among an emergence rate, a cone index of 5-15cm depth and a distribution rate of less than 4.75mm clod size. From these results, it is concluded that well-pulverized topsoil and well-compacted soil under the seeds ensure good emergence of sugar beets.