- 13 - 

 Harvesting and Storage 



Calif. The Physiology of Abscission in Horticxiltural Plants , 

 To (l) learn enriroruaentfiU. and internal factors affecting 

 auxin gradient at abscission zone; and (2) study associated 

 morphological phenomena. 

 Bot. 1357 



Calif. Development of Mechanical Harvesting and Field Handling 

 of Deciduous Tree Fruits, Ifuts, Grapes, Olives^ Berries, and 

 Vegetables . To (1) reduce labor requirements and unit costs 

 of harvesting tree and vine crops through design and develop- 

 ment of mechanical equipment and improved handling techniques; 

 and, (2) maintain quality of final product xinder a revised 

 harvesting system. 



Agr. Engin. 155I 



Mass, Refrigerated Fruit Storage . To study operation of re- 



frigerated and modified atmosphere apple and cranberry storages 

 in Massachusetts so that design conditions based on fundamentals 

 can be established for these types of refrigerated fruit stor- 

 ages in Massachiisetts • 

 Agr. Engin. 52 



Mich. Post-Harvest Physical and Chemical Changes in Fruits euad 

 Vegetables in Relation to Quality. I. Pre-Harvest Treatment , 

 Harvesting and Cviring Practices on Storage and Market Quality 

 of Onions. II. Nature, Measurement and Control of Substances 

 Caiising Bitterness in Carrots, Celery, and Lettuce. III. En- 

 zyme Relationships and Biochemical Changes Associated with the 

 Rapid Post-Harvest Deterioration of Strawberries, Muskmelons , 

 Peaches and Asparagus . I. To ascertain effects of mat\irity, 

 pre -harvest chemical treatments, topping methods, and curing 

 teB5)eratures on such quality factors as firmness, water loss 

 and dry matter content of onion bulbs and on the color, thick- 

 ness, and ti^tness of the outer scales; II. To learn chemical 

 constitution of principle or compotind causing bitterness and 

 devise methods for its deterioration, and measure quantita- 

 tively the effect of various handling and storage treatments 

 on occxirence, development or disappearance; and. III, To leaxn 

 nature of enzymatic and biochemicauL changes associated with 

 flesh softening of strawberries, and i)eaches, internal break- 

 down of muskmelons and darkening and subsequent breakdown of 

 stored or packaged asparagus; euad evaluate physicsil and chemical 

 treatments to retard these disorders. 

 Hort. 68 



