SAWFLY (HYMENOPTERA, DIPRIONIDAE) AND ARTIFICIAL DEFOLIATION AFFECTS ABOVEGROUND AND BELOWGROUND GROWTH OF PONDEROSA PINE-SEEDLINGS

Authors
SANCHEZMARTINEZ G WAGNER MR
Citation
G. Sanchezmartinez et Mr. Wagner, SAWFLY (HYMENOPTERA, DIPRIONIDAE) AND ARTIFICIAL DEFOLIATION AFFECTS ABOVEGROUND AND BELOWGROUND GROWTH OF PONDEROSA PINE-SEEDLINGS, Journal of economic entomology, 87(4), 1994, pp. 1038-1045
Citations number
32
Categorie Soggetti
Entomology,Agriculture
Journal title
Journal of economic entomology → ACNP
ISSN journal
00220493
Volume
87
Issue
4
Year of publication
1994
Pages
1038 - 1045
Database
ISI
SICI code
0022-0493(1994)87:4<1038:S(DAAD>2.0.ZU;2-Q
Abstract
A study was conducted to determine the effect of artificial and insect defoliation on above- and below-ground growth of ponderosa pine seedl ings (Pinus ponderosa Douglas ex Laws.). Two different pine genotypes either had needles artificially removed over time to simulate defoliat ion by sawflies (Neodiprion gillettei Rohwer) or were allowed to be fe d on by sawflies. Results showed that the growth of stems and roots we re similar under artificial and insect defoliation. Above- and below-g round growth was reduced in proportion to the amount of foliage remove d. The root:shoot ratio was not affected. The two pine genotypes respo nded differently to defoliation.