Ohio Factors Affecting Growth and Mineral Absorption by Plants . 



3. Mineral Absorption by Plants in Relation to the Soil Mois- 

 ture Supply , Study nutrient accumulation in plants in relation 

 to soil moisture content and soil moisture tension in the range 

 of wilting point to saturation. 

 Agron. 1-3 



Ohio Factors Affecting Growth and Mineral Absorption by Plants . 



U. Factors Affecting the Absorption by Soybeans of Native Soil 

 Manganese and Applied Manganese . (1) Study effect of rate and 

 placement of N, P, and K fertilizers applied individually and 

 in combination on the availability to soybeans of native soil 

 Mh, and Mn incorporated with fertilizers. (2) Learn residual 

 effect of applied Mn in light and heavy textured soils. In- 

 vestigate (3) relation between variation in soil temperature 

 and soil moisture and apparent fluctuation in rate of absorp- 

 tion of Mn by soybeans; (h) susceptibility of various varieties 

 to Mn deficiency. 

 Agron. 1-U 



Photosynthesis 



Ariz. Investigations on the Stomatal Mechanism . (1) Learn 



importance of photosynthesis in stomatal behavior. (2) Learn 

 importance of CO2 concentrations and H2O and mineral deficits 

 in stomatal behavior. (3) Study stomatal periodicity of 

 native and cultivated plants. (U) Correlate laboratory 

 studies on importance of photosynthesis, CO2, H2O, and minerals 

 with seasonal behavior of stomates in native and cultivated 

 plants • 



Bot. 385 



N. J. Photoperiodic Response of Woody, Ornamental Plants , (l) 



Stimulate or force additional growth on container-grown nursery 

 stock. Learn (2) proper timing for light application on in- 

 dividual species, giving maximum vegetative growth and adequate 

 hardening off so winter injury will be at a minimum; (3) period 

 when supplemental lights are effecting the additional growth to 

 occur; (u) photoperiodic response of a wide variety of plants 

 to supplemental lighting during growing season. 

 Hort. 36U 



N.Y. Photobiology in Plants. Study some of the photo-responses 



(Cornell) of plants more completely, and use light as an analystical tool 

 in studying physiological processes in living plants. 

 Bot. 218 



P. R. Photosynthetic Efficiency of Tropical Plants Under Various 



Environmental Conditions" To obtain specific information on 

 amount of nutrients assimilated and feed manufactured by plants 

 under varying climatic conditions. 

 PI. Physiol. 81 



