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Filtering by: Creator Griffith, S. M. License Public Domain Mark 1.0

Crop damage caused by powdery mildew on hop and its relationship to late season management

Creator:

Gent, D. H., Grove, G. G., Nelson, M. E., Wolfenbarger, S. N., and Woods, J. L.

Abstract:

Powdery mildew of hop (Podosphaera macularis) may cause economic loss due to reductions in cone yield and quality. Quantitative estimates of crop damage from powdery mildew remain poorly characterized, especially the effect of late season disease management on crop yield and quality. Field studies in Washington State evaluated cone yield,...

Resource Type:

Article
Comparison of submersible-survey and hydroacoustic-survey estimates of fish density on a rocky bank

Creator:

Starr, Richard M., Fox, David S., Hixon, Mark Anthony, Tissot, Brian N., Johnson, Gary E., and Barss, William H.

Abstract:

Submersible belt-transect surveys along a rocky bottom were combined with acoustic surveys of the water column to estimate depth distribution and density of fishes at Stonewall Bank, Oregon in the northeastern Pacific Ocean from September through October 1991. The objectives of the study were to determine the proportion of fish...

Resource Type:

Article

Full Text:

. S., M. H. Carr, and L. J. Haldorson. 1991. The ecology of substrate-associated juveniles of the