29 



Pa» Relationship of Microorganisms to Soil Phosphorus , (l) 



study influence of microorganisms on availability of soil P to 

 plants; (2) evaluate role of microorganisms as reservoirs for 

 soil P; (3) find a cycle of oxidation and reduction of Inorganic 

 P canpounds mediated by microorganisms; and (4) make isolations 

 frOTi soil to obtain microorganisms vfhich take up P from soluble 

 and Insoluble salts of the element. 

 Pact, 1333 



S, C. Investigations of the Microbiology of Crop Residue DeccMn- 

 position as Influenced by Tillage Practice. Type and Amount of 

 Residue and Fertilizer Treatment Combinations. To learn (l) rate 

 of microbial decomposition of organic material in soil as influenced 

 by tillage practices; (2) Influence of different types and amounts 

 of residues and different amounts of fertilizer on rate of de- 

 composition of organic matter and the improvement of soil structure; 

 and (3) influence of tillage and other cultural practices on N 

 transformations in the soil. 



Agron. 59 (S-35) Coop. ARS 



Va. The Fungus Flora of Agricultural Soils in Virginia, (l) 



Learn ftingus flora of agricultural soils in state; (2) correlate 

 presence and distribution of specific fungi vrlth soil types, 

 crop plants, and other ecological factors; and (3) study role 

 of soil fxingi in decomposition of organic materials and in con- 

 servation of inorganic N compounds and minerals. 

 Biol. 86090 



W. Va. Microbiology of Strip Mine Seepage Water in Relation to Plant 

 Growth and Soil Conditions. To determine (1) microflora of 

 seepage water and role of microorgauiisms in changes occurring; 

 (2) effect of mine seepage water on soil it contacts; and (3/ 

 effect of this water on agricultural soils and plant growth in 

 affected soils. 



Plant Path., Agron. 13 



