Dependence of 3 Nebraska Sandhills warm-season grasses on vesicular-arbuscular mycorrhizae
Issue Date
1993-01-01Keywords
Glomus deserticolaplant nutrition
recovery
vesicular arbuscular mycorrhizae
revegetation plants
Calamovilfa longifolia
symbiosis
nutrient uptake
seedlings
use efficiency
Nebraska
Panicum virgatum
Andropogon gerardii
phosphorus
tillering
growth rate
Metadata
Show full item recordCitation
Brejda, J. J., Yocom, D. H., Moser, L. E., & Waller, S. S. (1993). Dependence of 3 Nebraska Sandhills warm-season grasses on vesicular-arbuscular mycorrhizae. Journal of Range Management, 46(1), 14-20.Publisher
Society for Range ManagementJournal
Journal of Range ManagementDOI
10.2307/4002441Additional Links
https://rangelands.org/Abstract
Vesicular-arbuscular mycorrhizae (VAM) are rare or absent in actively eroding soils of the Sandhills. The objective of this study was to determine if 3 major Sandhills warm-season grasses used in reseeding eroded Sandhills sites are highly mycorrhizal dependent, and evaluate the response of VAM at different phosphorus (P) levels. In 2 greenhouse experiments, sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern.], switchgrass (Panicum virgatum L.), and prairie sandreed [Calamovilfa longifolia (Hook) Scribn.] were grown in steam-sterilized sand in pots and inoculated with either indigenous Sandhills VAM, Glomus deserticola, or noninoculated. In the second experiment, VAM inoculated and control plants were treated with 5 P levels ranging from 5.4 to 27.0 mg P pot-1. Increasing levels of P fertilizer caused an initial increase, then dramatic decrease, in percentage colonization by Glomus deserticola but bad no effect on percentage colonization by indigenous Sandhills VAM. Mycorrhizal inoculated plants had a greater number of tillers, greater shoot weight, root weight, tissue P concentration and percentage P recovered, and a lower root/shoot ratio and P efficiency than noninoculated plants. Noninoculated sand bluestem had significantly lower shoot P concentration but greater P efficiency over all P levels thin any other grass-VAM treatment combination. Phosphorus fertilizer and VAM effects were often complementary at P levels up to 16.2 to 21.6 mg P pot-1, with no change or a decrease in plant responses at higher P levels. These 3 major Sandhills warm-season grasses were highly mycorrhizal dependent. Successful reestablishment of these on eroded sites in the Sandhills may be greatly improved if soil reinoculation with VAM occurred prior to revegetation.Type
textArticle
Language
enISSN
0022-409Xae974a485f413a2113503eed53cd6c53
10.2307/4002441