Sand bluestem and prairie sandreed establishment.

摘要: Sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern,] and prairie sandreed (Calamovitfa longifolia Hook.) are native warm-season grasses used to revegetate cropland degraded rangeland on highly erodible sandy soils in the central Great Plains. The objectives of this study were compare establishment success 2 determine if application atrazine at time planting enhanced grass establishment. Eight plantings, including 'Goldstrike' 'Garden' sand 'Goshen' 'Pronghorn' sandreed, made from 1985 1987 locations eastern, northcentral, western Nebraska. Three plantings established under irrigation 5 dryland conditions. Atrazine [6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine] was applied a rate 2.2 kg a.i./ha 3 sites. Grasses planted 430 pure live seed/M2 clean tilled seedbeds. Establishment bluestem, as measured by herbage dry matter yield and/or frequency, generally superior that sandreed. Goshen failed establish adequate stands 6 8 plantings. Atrazine, planting, increased stand frequency sites with high weed interference but did not affect Based these results, should be dominant component seed mixtures stabilize