23 



Calif. Physiological Effects on Fruit Plants of Chemicals Other 



Than Fertilizers ! To learn (1) nature of injury and conditions 

 under which it occurs from the use of a suspected chemical on 

 fruit plants; (2) long-term effects of a suspected chemical on 

 fruit plants; (3) if there are conditions under which a sus- 

 pected chemical may be safely used. 

 Pomol. 17 Oh 



Colo. Chemical and Biological Investigations of Plant Growth 



Regulators . To investigate (1) normal and abnormal metabolites 

 as influenced by natural and synthetic plant growth regulators; 

 (2) effects of environment on reactions of organisms to natu- 

 ral and synthetic plant growth regulators; (3) biological and 

 chemical mechanisms of action of natural and synthetic regula- 

 tors; (U) effects of the regulators on quality and nutritional 

 character of crop plants; and (5) to synthesize or isolate 

 plant growth regulators that may be needed in carrying out the 

 above. 



Bot. 80 Coop. USN 



Conn, Biochemical Processes Underlying Growth Regulation in 



Eastern Hemlock (Tsuga canadensis)* To explore biochemical 

 processes explaining effects of light and temperature on 

 annual growth cycle of eastern hemlock; breaking of seed of 

 bud dormancy, terminal and lateral stem elongation, and re- 

 turn to dormancy. 

 For. U20 



Del. Flower and Pod-Drop of Lima Beans . Find method to reduce 



flower and pod drop caused by unfavorable growing conditions, 

 with emphasis on Ford- hook type. 

 Hort. 37-H 



Del. Control of Growth and Fruiting of Strawberry by Spray 



Application of Growth-Regulating Chemicals . To (1) determine 

 effectiveness of chemical plant thinning and plant spacing on 

 vigor and yield of strawberry; (2) test efficacy of certain 

 chemicals in regulating runner growth of certain strawberry 

 varieties; and (3) test efficacy of certain chemicals in 

 promoting fruit set and/or maintenance of berry size. 

 Hort. £L-H 



Fla. Effect of Growth Regulators in Production and Quality of 



Certain Nut and Fruit Plants . To determine effects of growth 

 regulators on (1) thinning of excessive nut set in pecans to 

 improve quality and reduce biennial bearing; (2) reduction of 

 winter chilling requirements for breaking dormancy of several 

 fruits; and (3) delay of flowering to reduce spring frost 

 hazards at blossoming time of fruits. 

 Fruit Crops £99 



