Subterranean clover enhances production of [open quote]Coastal[close quote] bermudagrass in the revegetation of lignite mine spoil
- Kansas Agriculture Experimental Station, Hays (United States)
- Texas A M Univ., College Station (United States)
Lignite mine spoils in Texas are commonly revegetated with [open quote]Coastal[close quote] bermudagrass [Cynodon dactylon (L.) Pers.]. Legumes have been overseeded in bermudagrass in reclamation programs in Texas, but information regarding establishment and persistence in mine spoil is limited. A field study investigated the effects of fertilization and inoculation with Rhizobium spp. on subterranean clover (Trifolium subterraneum L.; subclover) establishment and production in mine spoil and to assess the effect of subclover on Coastal bermudagrass. Subclover seed was broadcast into a 6-mo-old bermudagrass sod in October 1986. Individual plots were fertilized, or left unfertilized at the beginning of each clover season (Sept.-Oct.); however, all plots were fertilized at the start of each grass season (April-May). Although native rhizobia was present in plots, inoculation with a commercial, multi-strain inoculant increases subclover forage production (100%) and total N and P yields of subclover. The overseeding of subclover into the bermuda grass sod increased grass production and total N and P yields later in the first year and in the second season. However, inoculation of subclover had little effect on subsequent grass production. There was an apparent positive benefit of P fertilization on subclover and bermudagrass production. The effect of subclover on grass production was apparent by the end of the first grass season, and it became even more evident in the second year. The results showed that subclover was established and maintained for at least two seasons in a bermudagrass sod on reclaimed lignite spoil, and that the clover benefited the subsequent grass crop when fertilized with P and K, apparently by providing extra [open quotes]fixed[close quotes] N for grass production. 22 refs., 5 tabs.
- OSTI ID:
- 6418484
- Journal Information:
- Agronomy Journal; (United States), Journal Name: Agronomy Journal; (United States) Vol. 85:2; ISSN 0002-1962; ISSN AGJOAT
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010800* -- Coal
Lignite
& Peat-- Waste Management
560000 -- Biomedical Sciences
Applied Studies
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOLOGICAL EFFECTS
BROWN COAL
CARBONACEOUS MATERIALS
CLOVER
COAL
DEVELOPED COUNTRIES
ENERGY SOURCES
FERTILIZATION
FOSSIL FUELS
FUELS
GRAMINEAE
GROWTH
INOCULATION
LEGUMINOSAE
LIGNITE
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MATERIALS
MICROORGANISMS
NORTH AMERICA
PLANTS
REMEDIAL ACTION
REVEGETATION
RHIZOBIUM
SPOIL BANKS
TEXAS
USA