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Oreg, Sawdust and Other Wood Wastes as Mulches or Soil Amendments . 

 To determine (l) growth response of both annual and perennial 

 horticultural crops to production under various organic mulches 

 and soil amendments, rates of supplemental commercial fertilizers 

 required for normal plant growth, and the value of these mulches 

 in facilitating cultural operations; (2) by analysis the soluble 

 nutrients, value for conserving soil moisture and effect on 

 porosity and granulation of the soil, and the value as a source 

 of organic matter and humus renewal; and (3) rate and extent of 

 decomposition of mulches and their effects on microbiological 

 activities in the soil. 

 Hort., Soils, Bact. 45 



Oreg. Soil Microorganisms Influencing Nitrogen Availability. 



Nitrogen Balance, and Losses in Semi-Arid Soils . Study nitrogen 

 losses and nitrogen balance as influenced by nitrogen fertilizers 

 and organic matter additions in semi-arid soils. 

 Bact. 177 (W-31) 



Oreg. The Role of Rhizosphere Bacteria in the Growth of Forage 

 Plants and the Influence of Organic Residues and Nitrogen 

 Fertilizers on Their Development^ lb learn (l) if important 

 forage plants have a specific rhizosphere microflora; (2) if 

 microflora is beneficial to plant; (3) effects of crop residues 

 and N fertilizers on rhizosphere microflora and its influence 

 on selected forage plant species. 

 Bact. 282 (W-47) 



Pa. The Recovery of Microorganisms From Ultraviolet and Visable 



Light Radiation Damage . (1; Quantitate killing by visable light 

 radiation and observe possible recovery methods; (2) explore 

 possibility that a single mechanism is responsible for most 

 types of recovery; (3) study possible interrelationship between 

 killing and recovery by radiation from ultraviolet and from the 

 visible portion of spectrum. 

 Bact. 1289 



Pa. A Study of the Relationship of Microorganisms in the Family 



Enterobacteriaceae . Learn serological relationships, comparing 

 microorganisms in the mucoid and smooth phases as well as changes 

 associated with microbic dissociation within the genus Erwinia 

 and related members of the Enterobacteriaceae . 

 Bact., Bot., PI. Path. 1331 



