Abstract
Abstract In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky, to study short rotation yields. Three spacings—0.3 × 0.9 m, 0.9 × 0.9 m, and 1.8 × 0.9 m—and three fertilization treatments—control, N (169 kg/ha) and NP (169 kg/ha N and 112 kg/ha P)—were tested. After 3 years highest above-ground yields on both sites occurred with the closest spacing and N fertilization. Exclusive of foliage, saplings produced an average ovendry biomass of 14.3 and 15.4 metric tons per hectare (MT/ha) on the floodplain and terrace sites respectively for this treatment combination. Foliage accounted for approximately 20 percent of the total yield, and bark on the main bole comprised about 10 percent of the bole and branch dry weights. Branches, with leaves removed, comprised an additional 25 percent of the dry weights, leaving approximately 25 percent of the dry weight yield as bolewood. Forest Sci. 22:338-342.
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Claims 6
Claim · model-written summary
With the closest spacing and N fertilization, above-ground yields were highest on both sites after 3 years.
- Taxon
- American sycamore
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Platanus occidentalise2 - Treatment
- closest spacing and N fertilizatione1
- Outcome
- above-ground yieldse1
- Direction
- higheste1
- Qualifier
- After 3 yearse1
- Setting
- Ohio River near Hawesville, Kentuckye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“After 3 years highest above-ground yields on both sites occurred with the closest spacing and N fertilization”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”
Claim · model-written summary
Excluding foliage, saplings with the closest spacing and N fertilization produced ovendry biomass of 14.3 and 15.4 MT/ha on the floodplain and terrace sites respectively.
- Taxon
- American sycamorePlatanus occidentalise2
- Treatment
- closest spacing and N fertilizatione1
- Outcome
- ovendry biomasse3
- Value
- 14.3 and 15.4 metric tons per hectare (MT/ha)e3
- Qualifier
- Exclusive of foliagee3
- Setting
- floodplain and terrace sitese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After 3 years highest above-ground yields on both sites occurred with the closest spacing and N fertilization”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”
e3“Exclusive of foliage, saplings produced an average ovendry biomass of 14.3 and 15.4 metric tons per hectare (MT/ha) on the floodplain and terrace sites respectively for this treatment combination”
Claim · model-written summary
Foliage accounted for approximately 20 percent of the total yield of American sycamore.
- Taxon
- American sycamorePlatanus occidentalise2
- Outcome
- Foliagee4
- Value
- approximately 20 percente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Foliage accounted for approximately 20 percent of the total yield”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”
Claim · model-written summary
Bark on the main bole comprised about 10 percent of bole and branch dry weights of American sycamore.
- Taxon
- American sycamorePlatanus occidentalise2
- Outcome
- bark on the main bolee5
- Value
- about 10 percente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“bark on the main bole comprised about 10 percent of the bole and branch dry weights”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”
Claim · model-written summary
Branches with leaves removed comprised an additional 25 percent of the dry weights of American sycamore.
- Taxon
- American sycamorePlatanus occidentalise2
- Outcome
- Branches, with leaves removede6
- Value
- an additional 25 percente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Branches, with leaves removed, comprised an additional 25 percent of the dry weights”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”
Claim · model-written summary
Approximately 25 percent of the dry weight yield of American sycamore was bolewood.
- Taxon
- American sycamorePlatanus occidentalise2
- Outcome
- bolewoode7
- Value
- approximately 25 percente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“leaving approximately 25 percent of the dry weight yield as bolewood”
e2“In 1971 American sycamore ( Platanus occidentalis L.) plantations were established on a terrace and a floodplain site along the Ohio River near Hawesville, Kentucky”