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Creator:: Bandick, Anna Katrina
Resource Type:: Masters Thesis
Full Text:: recent studies on soil aggregation (Cambardella and Elliott, 1993; Degens et al., 1994; Gupta and

Creator:: Deng, Shiping
Resource Type:: Masters Thesis
Full Text:: in soils is an insignificant part of the total activity. Based on tests of several buffers, 0.05 M

Creator:: Schisler, David Albert
Abstract:: Fusarium spp. frequent conifer nursery soils yet are rarely recovered from coniferous forest soils. Experiments were performed to determine what influence humic-rich organic amendments and volatiles from soil, ectomycorrhizal fungi and ectomycorrhizae have on the populations of several physiologic and taxonomic microbial groups potentially related to this phenomenon. A comparative...
Resource Type:: Dissertation
Full Text:: selected at random within a 25 m by 25 m sampling area. Prior to 8 assaying soils for microbial

Creator:: Schutter, Mary E.
Abstract:: The Oregon Long-Term Soil Quality Project was initiated to identify soil properties that respond rapidly to alternative management practices. Such practices included winter cover cropping, which was implemented at two experimental research stations and several grower fields throughout the Willamette Valley. The goal of this thesis was to identify the...
Resource Type:: Dissertation
Full Text:: . Schutter conducted research and wrote each manuscript. Joan M. Sandeno managed all field samplings and

Creator:: Fernando, W. Gerard Dilantha
Abstract:: Phytophthora vignae, causal agent of stem and root rot of cowpea (Vigna unguiculata), was reported for the first time in Sri Lanka. The pathogen was found in cowpea field soils from 3 of 5 geographic regions sampled. Only one site however, had plants exhibiting disease symptoms. Of the eight cowpea...
Resource Type:: Dissertation
Full Text:: roots at about 20 m intervals and randomly along a W shaped path covering the entire area of each

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