Depth, season, and row spacing for planting grasses on southern Idaho range lands
1948
Hull, A.C. Jr
Eight studies, some of which were planted at two or three locations, were established throughout southern Idaho to determine proper season, depth, and row spacing for seeding range grasses. Because of the influence of a wide variety of site and climatic conditions, the results as to season and depth of planting were not fully consistent. In general, however, these studies and widespread observations show that a uniform and shallow covering not exceeding 3/4 inch is the best depth for planting crested wheatgrass and other comparatively small-seeded species used in range reseeding. Larger seeded species may be planted up to 1 inch in depth. Deeper than average covering is recommended on dry sites and on sandy soils and shallower covering on moist sites and on clays. Seedlings growing from seed shallowly covered in the bottom of deep drill furrows partially escape soil drying and weed competition. Fall seedings are generally better than spring seedings; on areas having dependable soil moisture, they should be completed in September. Where early fall moisture is not dependable, plantings should be delayed until October or November. Seedings made in March are successful if the area has a long spring growing season. Row spacings of 6 inches are better for weed control, soil protection, and grazing than are wider spacings.
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