Paper · 1982 · Arboriculture & Urban Forestry

Establishment Rates for Different Bareroot Grades of Trees

Margaret Litzow; Harold Pellett

6
claims
6
verbatim quotes
1
citations
2
research areas
✓
Open access

Abstract

Establishment rates of eleven grades of bareroot green ash were compared at two locations for three growing seasons. Three whip and two branched grades consistently showed the greater percentage increases in trunk diameter than the other six grades. There were large differences in growth rates and survival between the two locations. In the clean-cultivated plots all trees survived and after three growing seasons 8'-branched and smaller grades had at least doubled in trunk diameter. Similar size trees planted at a different location in high grass and mulched with wood chips had poorer survival rates with no grades doubling in average trunk diameter.

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Claims 6

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Three whip and two branched grades had greater trunk diameter gains than the other six grades.

Material
Three whip and two branched gradese0
Outcome
percentage increases in trunk diametere0
Direction
greatere0
Comparator
other six gradese0

Not reportedTaxon

Verbatim

e0

“Three whip and two branched grades consistently showed the greater percentage increases in trunk diameter than the other six grades”

✓ located verbatim in the source · abstract, characters 117–248 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Growth and survival differed greatly between locations.

Outcome
growth rates and survivale0
Direction
large differencese0
Setting
two locationse0

Not reportedTaxon

Verbatim

e0

“There were large differences in growth rates and survival between the two locations”

✓ located verbatim in the source · abstract, characters 250–333 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

All trees survived in clean-cultivated plots.

Outcome
all trees survivede0
Setting
clean-cultivated plotse0

Not reportedTaxon

Verbatim

e0

“In the clean-cultivated plots all trees survived”

✓ located verbatim in the source · abstract, characters 335–383 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Eight-foot branched and smaller trees at least doubled trunk diameter after three seasons.

Material
8'-branched and smaller gradese0
Outcome
trunk diametere0
Direction
doublede0
Value
at least doublede0

Not reportedTaxon

Verbatim

e0

“after three growing seasons 8'-branched and smaller grades had at least doubled in trunk diameter”

✓ located verbatim in the source · abstract, characters 388–485 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Comparable trees in high grass with wood-chip mulch had poorer survival.

Treatment
mulched with wood chipse0
Outcome
survival ratese0
Direction
poorere0
Setting
different location in high grasse0

Not reportedTaxonComparator

Verbatim

e0

“Similar size trees planted at a different location in high grass and mulched with wood chips had poorer survival rates”

✓ located verbatim in the source · abstract, characters 487–605 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

No grades doubled average trunk diameter at the high-grass site.

Outcome
average trunk diametere0
Direction
no grades doublinge0

Not reportedTaxon

Verbatim

e0

“no grades doubling in average trunk diameter”

✓ located verbatim in the source · abstract, characters 611–655 · show in text ↑