Claim · model-written summary
Larval defoliation reduced volume increment by 32 per cent in lodgepole pine trees whose mature foliage was consumed.
- Taxon
- Lodgepole Pine
Pinus contortat0 - Treatment
- larvae had consumed all mature foliagee0
- Interactor
- European pine sawfly Neodiprion sertifer
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Neodiprion sertifere1pest - Outcome
- volume incrementse0
- Direction
- Reductionse0
- Value
- 32 per cente0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
t0“Lodgepole Pine”
e0“Reductions in total projected leaf area, annual height and volume increments of 19, 33 and 32 per cent, respectively, were recorded on trees where larvae had consumed all mature foliage”
e1“larval European pine sawfly Neodiprion sertifer (Geoff. )”
Title
R. J. BRITTON Forestry An International Journal of Forest Research 1988. doi:10.1093/forestry/61.2.165
Other claims from this paper (7)
- Intervention effect Larval defoliation reduced total projected leaf area by 19 per cent in lodgepole pine trees whose mature foliage was consumed.
- Intervention effect Larval defoliation reduced annual height increment by 33 per cent in lodgepole pine trees whose mature foliage was consumed.
- Intervention effect Leader growth of defoliated lodgepole pine trees was up to 48 per cent less after two years, reflecting a delayed growth impact.
- Intervention effect Hand defoliation resembling sawfly feeding produced effects similar to larval defoliation in lodgepole pine.
- Intervention effect Artificial defoliation of transplants had serious consequences for below-ground growth of lodgepole pine, particularly fine roots.
- Intervention effect Root:shoot ratio was higher in defoliated lodgepole pine plants (1. 05) than in undamaged plants (0.64).
- Intervention effect Fenitrothion at 1300 ppm had no significant effect on the major growth parameters of lodgepole pine.