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N, H, The Development , Improvement and Maintenance of Blueberry 



Fields , To learn (1) reliable procedures for developing and 

 maintaining blueberry plants on abandoned farm lands and other 

 available areas; (2) optimum cultural practices, particularly 

 fertilizer requirements, weed control, and the control of 

 insects and diseases; (3) the ecological factors significantly 

 associated with successful blueberry production; and (4) to 

 create improved stands through selection and breeding, 

 Hort, 56 



N. H, Virus Diseases of Strawberries in New Hampshire , To 



determine (1) what wild species and cultivated varieties of 

 strawberries are infected with viruses, and to locate virus- 

 free clones of the varieties for propagation; and (2) effect 

 of viruses on plant propagation and on fruit yields of 

 cultivated varieties. 

 Bot, 63 Coop. ARS 



N, J, Blueberry Diseases and Their Control , (l) Learn causal 

 agents of blueberry diseases, life histories of present 

 imperfectly understood pathogens, and influence of environment 

 on developnent of diseases; (2) develop control measures based 

 on above determinations; (3) learn effect of chemicals used 

 in disease control on plant growth, yields, and fruit quality; 

 (4) develop procedures for screening large numbers of seedlings 

 in search for resistance to major blueberry diseases, 

 PI, Path, 471 Coop. ARS 



N, J, Cranberry Diseases and Their Control , (l) Learn causal 

 agents of cranberry disease, life histories of present 

 imperfectly understood pathogens, and influence of environment 

 on disease development; (2) develop controls for above deter- 

 minations; (3) learn effect of chemicals used in control on 

 plant growth, yields, and fruit quality, 

 PI, Path, 472 Coop. ARS 



N. J, Diseases of Strawberries, Grapes and Cane Fruits , To learn 

 (l) causes, extent of losses, and control of disease of straw- 

 berries, grapes and cane fruits; (2) effect of chemicals in 

 disease control on plant girowth, yields, and fruit quality; (3) 

 influence of soil temperature on development of root and vascular 

 disease of strawberries, 



Hort,, Ent,, 480 Coop, ARS 



