Western Pine Shoot Borer (Lepidoptera: Olethreutidae) Response to Site Preparation in Ponderosa Pine Plantations

1989 ◽  
Vol 82 (2) ◽  
pp. 543-547 ◽  
Author(s):  
Darrell W. Ross
Keyword(s):  
Ponderosa Pine ◽  
Site Preparation ◽  
Pine Plantations ◽  
Shoot Borer

Pheromone-based disruption of Eucosma sonomana and Rhyacionia zozana (Lepidoptera: Tortricidae) using aerially applied microencapsulated pheromone

2006 ◽  
Vol 36 (2) ◽  
pp. 361-368 ◽  
Author(s):  
Nancy E Gillette ◽  
John D Stein ◽  
Donald R Owen ◽  
Jeffrey N Webster ◽  
Sylvia R Mori
Keyword(s):  
Active Ingredient ◽  
Ponderosa Pine ◽  
Application Rate ◽  
Pine Plantations ◽  
Shoot Borer ◽  
Tree Protection ◽  
Absolute Reduction ◽  
Operational Testing ◽  
Complete Disruption ◽  
Moth Species

Two aerial applications of microencapsulated pheromone were conducted on five 20.2 ha plots to disrupt western pine shoot borer (Eucosma sonomana Kearfott) and ponderosa pine tip moth (Rhyacionia zozana (Kearfott); Lepidoptera: Tortricidae) orientation to pheromones and oviposition in ponderosa pine plantations in 2002 and 2004. The first application was made at 29.6 g active ingredient (AI)/ha, and the second at 59.3 g AI/ha. Baited sentinel traps were used to assess disruption of orientation by both moth species toward pheromones, and E. sonomana infestation levels were tallied from 2001 to 2004. Treatments disrupted orientation by both species for several weeks, with the first lasting 35 days and the second for 75 days. Both applications reduced infestation by E. sonomana, but the lower application rate provided greater absolute reduction, perhaps because prior infestation levels were higher in 2002 than in 2004. Infestations in treated plots were reduced by two-thirds in both years, suggesting that while increasing the application rate may prolong disruption, it may not provide greater proportional efficacy in terms of tree protection. The incidence of infestations even in plots with complete disruption suggests that treatments missed some early emerging females or that mated females immigrated into treated plots; thus operational testing should be timed earlier in the season and should comprise much larger plots. In both years, moths emerged earlier than reported previously, indicating that disruption programs should account for warmer climates in timing of applications. The AIs we tested are behaviorally active for 13 other species of Rhyacionia and six other species of Eucosma, so the approach may have wide application.

MATING DISRUPTION WITH SYNTHETIC SEX ATTRACTANTS CONTROLS DAMAGE BY EUCOSMA SONOMANA (LEPIDOPTERA; TORTRICIDAE, OLETHREUTINAE) IN PINUS PONDEROSA PLANTATIONS: I. MANUALLY APPLIED POLYVINYL CHLORIDE FORMULATION

1980 ◽  
Vol 112 (2) ◽  
pp. 159-162 ◽  
Author(s):  
Charles Sartwell ◽  
G. E. Daterman ◽  
L. L. Sower ◽  
D. L. Overhulser ◽  
T. W. Koerber
Keyword(s):  
Polyvinyl Chloride ◽  
Pinus Ponderosa ◽  
Ponderosa Pine ◽  
Mating Disruption ◽  
Pine Plantations ◽  
Sex Attractants ◽  
Shoot Borer ◽  
Chemical Mixture ◽  
Low Dosage

AbstractA chemical mixture highly attractive to males of western pine shoot borer, Eucosma sonomana Kearfott, were dispensed from manually applied polyvinyl chloride releasers on 15 ha of ponderosa pine plantations during spring 1978 near Bly, Oregon. Mating disruption treatments, replicated 4 times, were 3.5 g/ha from 100 releasers/ha spaced at 10 m, and 14 g/ha from 400 releasers/ha spaced at 5 m. Both were equally effective; the number of damaged terminal shoots was reduced 83.0% with the low dosage and 84.2% with the high dosage.

Effects of site preparation on timber and non-timber values of loblolly pine plantations

1998 ◽  
Vol 107 (1-3) ◽  
pp. 47-53 ◽  
Author(s):  
Jianbang Gan ◽  
Stephen H. Kolison ◽  
James H. Miller ◽  
Tasha M. Hargrove
Keyword(s):  
Loblolly Pine ◽  
Site Preparation ◽  
Pine Plantations

Spacing and Shrub Competition Influence 20-Year Development of Planted Ponderosa Pine

1990 ◽  
Vol 5 (3) ◽  
pp. 79-82 ◽  
Author(s):  
William W. Oliver
Keyword(s):  
Sierra Nevada ◽  
Pinus Ponderosa ◽  
Ponderosa Pine ◽  
Major Effect ◽  
Tree Size ◽  
Pine Plantations ◽  
Stand Development

Abstract Growth and stand development of ponderosa pine (Pinus ponderosa) were monitored for 20 years after planting at five different square spacings (6, 9, 12, 15, and 18 ft) in the presence or absence of competing shrubs on the westside Sierra Nevada. Mean tree size was positively correlated and stand values negatively correlated with spacing in the absence of competing shrubs. Trees growing with competing shrubs attained 76% of the diameter, 80% of the height, and 58% of the cubic volume of trees free of shrub competition when all spacings were combined. This study suggests that the major effect of shrub competition in ponderosa pine plantations on good sites is to lengthen the rotation. West. J. Appl. For. 5(3):79-82, July 1990.

Sign in / Sign up

Export Citation Format

Share Document