Calif. Relation of Soil Moisture Conditions to the Physiology 

 of Plants . To (1) develop means of relating measurable soil 

 moisture stress conditions within root zone to effective 

 moisture stress in the plant; (2) study effects of moisture 

 stress on root functioning and rate of elongation; (3) de- 

 termine relative effects of increasing moisture stress on 

 various aspects of plant functioning and growth; and (U) in- 

 vestigate influence of environmental conditions on relations 

 between soil moisture stress and. plant growth. 

 Irrig. 1^82 (W-29) 



Colo, The Influence of Irrigation Practices on Soil Structure 



and Plant Growth ^ To learn effect of methods of (1) applica- 

 tion of irrigation water on moisture distribution, surface 

 crusting, and plant emergence and growth; (2) land prepara- 

 tion for irrigation and effect of subsequent tillage opera- 

 tions on soil tilth. 



Agron., Agr. Engin., Soils 17 



Idaho The Water Requirements of Tree Fruits . To (1) develop 



a practical technique for determining the point of critical 

 water deficit in fruit tree tissues; and (2) measure effects 

 of acute water deficits on growth of trees and fruit. 

 Hort. -209 



Iowa Favorable Substrate Moisture Levels for Germination 



Testing of Grass Seeds . (1) Devise methods of maintaining 

 measured moisture levels in germination substrata. (2) Learn 

 moisture level requirements of germinating grass seeds with 

 respect to application in conducting reproducible germination 

 tests. 



Bot., PI. Path. 1360 (NCM-23) 



Maine Efficient Utilization of Irrigation Water . Learn total 



water needs as well as critical moisture period during grow- 

 ing period of crops. Make soil moisture analysis on soils of 

 different texture which can be used in designing and utilizing 

 irrigation installations. 



Agron., Agr. Engin. 59 (NE-22) 



Mont. Effect of Moisture Stress During Germination on Genetic 



Shift in Perennial Forage Genotypes . (1) Evaluate moisture 

 stress effects on genotypic changes in a forage species. (2) 

 Compare methods of learning germination responses under 

 moisture stress. 



Agron., Soils 930 (W-£8) 



Nebr. The Relationship Between Meteorological Factors and the 



Rate of" Water Use by Corru (1) Relate evapotranspiration, 

 meteorological phenomena, and physical characteristics of the 

 soil to crop response. (2) Develop a water use equation for 

 calculating irrigation needs of corn. 

 Agr. Engin. 570 (NC-U6) 



