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The effects of a companion crop and depth of planting on the establishment of smooth bromegrass, Bromus inermis, Leyss

Lueck, A.G., Sprague, V.G., Garber, R.J.
Agronomy journal 1949 v.41 no.4 pp. 137-140
Bromus inermis, Avena sativa, planting date, seedling growth, companion crops, plant establishment, Pennsylvania
Experiments were conducted in the field at State College, Pennsylvania, on a Hagerstown silty clay loam to study the effects of depth and time of planting, with and without a companion crop of oats, on the stands of three strains of bromegrass. In these trials, plants of bromegrass (exclusive of roots) seeded without a companion crop ranged from 4 to 17 times heavier and produced from 2 to 5 times more tillers than similar plants seeded with oats. Seeding depths of 1/4, 1/2, and 1 inch all gave good stands whereas seeding at a 2-inch depth was poor. The stand from the 1 1/2-inch depth was intermediate. These investigations suggest that important determining factors in the successful establishment of bromegrass are depth of planting, use of a companion crop, and soil conditions, particularly soil moisture. A strain of commercial bromegrass of Michigan origin produced better stands at the 2-inch depth than did Lincoln or Parkland. However, at 1 1/2-inch and shallower depths no great differences due to the strains used were observed.