Abstract
Th e establishment of intensively managed woody energy crops on reclaimed surface mine lands provides an opportunity to diversify domestic biomass sources, while increasing the productivity and economic value of underutilized land. Our objective is to test the eff ect of fertilization on the growth and biomass accumulation of American sycamore (Platanus occidentalis L.) and black locust (Robinia pseudoacacia L.) planted on a reclaimed surface mine. In 2008, replicated plantings of sycamore and black locust were established on Big Elk Mine in eastern Kentucky. Th e treatments tested include a onetime granular fertilizer application of 37 kg N, 30 kg P, and 16 kg K ha -1 and an unfertilized control. Following one growing season, American sycamore exhibited signifi cantly (p < 0.05) greater stem biomass in the fertilizer treatment (48.98 g) than in the control (23.52 g). Stem biomass of black locust was also greater (p < 0.01) in the fertilizer treatment (32.36 g) than in the control (13.20 g). Mean diameter and height growth of black locust was signifi cantly (p < 0.05) greater in fertilizer treatments (6.52 mm, 20.37 cm, respectively) compared to the control (2.27 mm; 9.38 cm). American sycamore also displayed signifi cant (p < 0.05) diff erences in diameter and height growth between fertilizer (7.86 mm; 30.63 cm) and control (4.42 mm; 15.97 cm) treatments. Mean black locust survival was 79.25 percent in control treatments and 88.07 percent in fertilizer treatments. American sycamore survival did not diff er between control (96.43 percent) and fertilizer (93.81 percent) treatments. Our fi ndings indicate that fertilizer applications to 1-year-old seedlings on reclaimed mines in Appalachia increase height, diameter, and biomass accumulation.
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Claims 8
Claim · model-written summary
Fertilizer increased American sycamore stem biomass to 48.98 g versus 23.52 g in controls.
- Taxon
- American sycamore
.jpg?width=60)
Platanus occidentalise0 - Treatment
- fertilizer treatmente0
- Outcome
- stem biomasse0
- Direction
- greatere0
- Value
- 48.98 ge0
- Qualifier
- 23.52 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“American sycamore exhibited signifi cantly (p < 0.05) greater stem biomass in the fertilizer treatment (48.98 g) than in the control (23.52 g).”
Claim · model-written summary
Fertilizer increased black locust stem biomass to 32.36 g versus 13.20 g.
- Taxon
- black locust
Robinia pseudoacaciae0 - Treatment
- fertilizer treatmente0
- Outcome
- Stem biomasse0
- Direction
- greatere0
- Value
- 32.36 ge0
- Qualifier
- 13.20 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem biomass of black locust was also greater (p < 0.01) in the fertilizer treatment (32.36 g) than in the control (13.20 g).”
Claim · model-written summary
Fertilizer increased black locust diameter growth to 6.52 mm versus 2.27 mm.
- Taxon
- black locustRobinia pseudoacaciae0
- Treatment
- fertilizer treatmentse0
- Outcome
- diametere0
- Direction
- greatere0
- Value
- 6.52 mme0
- Qualifier
- 2.27 mme0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean diameter and height growth of black locust was signifi cantly (p < 0.05) greater in fertilizer treatments (6.52 mm, 20.37 cm, respectively) compared to the control (2.27 mm; 9.38 cm).”
Claim · model-written summary
Fertilizer increased black locust height growth to 20.37 cm versus 9.38 cm.
- Taxon
- black locustRobinia pseudoacaciae0
- Treatment
- fertilizer treatmentse0
- Outcome
- height growthe0
- Direction
- greatere0
- Value
- 20.37 cme0
- Qualifier
- 9.38 cme0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean diameter and height growth of black locust was signifi cantly (p < 0.05) greater in fertilizer treatments (6.52 mm, 20.37 cm, respectively) compared to the control (2.27 mm; 9.38 cm).”
Claim · model-written summary
Fertilized sycamore had 7.86 mm diameter growth versus 4.42 mm in controls.
- Taxon
- American sycamorePlatanus occidentalise0
- Treatment
- fertilizere0
- Outcome
- diametere0
- Value
- 7.86 mme0
- Qualifier
- 4.42 mme0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“American sycamore also displayed signifi cant (p < 0.05) diff erences in diameter and height growth between fertilizer (7.86 mm; 30.63 cm) and control (4.42 mm; 15.97 cm) treatments.”
Claim · model-written summary
Fertilized sycamore had 30.63 cm height growth versus 15.97 cm in controls.
- Taxon
- American sycamorePlatanus occidentalise0
- Treatment
- fertilizere0
- Outcome
- height growthe0
- Value
- 30.63 cme0
- Qualifier
- 15.97 cme0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“American sycamore also displayed signifi cant (p < 0.05) diff erences in diameter and height growth between fertilizer (7.86 mm; 30.63 cm) and control (4.42 mm; 15.97 cm) treatments.”
Claim · model-written summary
Black locust survival was 88.07 percent under fertilizer versus 79.25 percent in controls.
- Taxon
- black locustRobinia pseudoacaciae0
- Treatment
- fertilizer treatmentse0
- Outcome
- survivale0
- Value
- 88.07 percente0
- Qualifier
- 79.25 percente0
- Comparator
- control treatmentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean black locust survival was 79.25 percent in control treatments and 88.07 percent in fertilizer treatments.”
Claim · model-written summary
American sycamore survival did not differ between control and fertilizer treatments.
- Taxon
- American sycamorePlatanus occidentalise0
- Treatment
- fertilizere0
- Outcome
- survivale0
- Direction
- did not diff ere0
- Value
- 93.81 percente0
- Qualifier
- 96.43 percente0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“American sycamore survival did not diff er between control (96.43 percent) and fertilizer (93.81 percent) treatments.”
The same questions in other papers
fertilization · growth · Robinia pseudoacacia (black locust)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
4 papers more in this group
See all 8 papers →fertilization · growth · Platanus occidentalis (American sycamore)Results agree
1 paper in the same direction as this paper
- 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.