Abstract
The utility of the fuel plantation concept, i.e., the production of biomass for fuel purposes on marginal lands, hinges on the ability to regenerate after harvest at a minimal cost. Black locust coppices readily; the wood has a high heat equivalent; it fixes nitrogen; and it can be established by direct seeding on surface mines in the Appalachian Region. In 1979 a project was established to study the nature of black locust coppice, and to test several cultural treatments on north and west aspects after harvesting a 5-year-old stand of saplings on surface mine spoil in eastern Kentucky. The treatments included fertilization, application of foliar insecticide (Orthene), and a combination of fertilizer and insecticide. After one year, the greatest coppice production (6.3 MT/ha) occurred on the west aspect in plots treated with insecticide and fertilizer. This treatment resulted in a 50 percent increase in biomass over the control plots, but it was not significantly different from the insecticide treatment, which ranked second. This may suggest that elimination of the locust leaf miner, which greatly reduces photosynthetic area, may significantly increase black locust production in the southern Appalachians.
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Claims 3
Claim · model-written summary
Insecticide plus fertilizer on west aspect gave the greatest coppice production, 6.3 MT/ha.
- Taxon
- black locust
Robinia pseudoacaciat0 - Treatment
- insecticide and fertilizere0
- Outcome
- coppice productione0
- Direction
- greateste0
- Value
- 6.3 MT/hae0
- Setting
- west aspecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the greatest coppice production (6.3 MT/ha) occurred on the west aspect in plots treated with insecticide and fertilizer”
t0“black locust”
Claim · model-written summary
Insecticide plus fertilizer increased biomass 50 percent over controls.
- Taxon
- black locustRobinia pseudoacaciat0
- Outcome
- biomasse0
- Direction
- increasee0
- Value
- 50 percente0
- Comparator
- control plotse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment resulted in a 50 percent increase in biomass over the control plots”
t0“black locust”
Claim · model-written summary
The combined treatment did not significantly differ from insecticide alone, which ranked second.
- Taxon
- black locustRobinia pseudoacaciat0
- Outcome
- not significantly differente0
- Direction
- not significantly differente0
- Comparator
- insecticide treatmente0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was not significantly different from the insecticide treatment, which ranked second”
t0“black locust”
The same questions in other papers
fertilization · yield · Robinia pseudoacacia (black locust)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.