Seed from 45 strains of grass were sown with 2 drills fitted with different furrow openers and depth control devices. Standard (34-cm diameter) double disk openers (Kirchman (Lilliston Melroe)) fitted with depth control bands 2 cm wide and 5 cm smaller in diameter than the disk were used to seed 1 trial at a seeding depth of 2.5 cm. This seeding was compared to forage crop stands obtained from a drill fitted with an experimental opener using 2 disks of unequal diameter, the larger (38 cm diameter) running vertical and the smaller (28 cm diameter) angled at 7 degrees. The center for mounting the small disk is 5 cm below and 2.5 cm behind the large disk, thus the bottoms of the disks are on the same horizontal plane. Seeding depths of 2.5 cm and 6.25 cm were accomplished by an adjustable rubber-tired depth gauge wheel assembled beside the large disk. At the 2.5 cm depth of seeding, the large-small disk opener assembly resulted in superior forage establishment compared to that obtained with the standard double disk assembly. Comparing either opener-depth control assembly set to seed at 2.5 cm depth with the large-small disk assembly set to seed at 6.25 cm depth confirmed the value of shallow seeding of forage crops to overcome establishment problems. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.