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REGIONAL PROJECTS 



W-12 Control of Root Rots and Viruses of Dry and Snap Beans by 

 Breeding , (1) To develop new or improved varieties of dry and 

 snap beans resistant to virus diseases, and root rots; (2) to 

 determine causes and control of root rots of beans specifically 

 as related to (a) causal organisms, (b) sources of resistance, 

 (c) cultural, biological, and chemical treatments; (3) to 

 determine the mode of inheritance of the factors for resistance 

 to bean mosaics and curly top; (A) to determine the insect vectors, 

 insect hosts, and virus reservoirs of the bean viruses; (5) to 

 determine the chemical, biological, and physical properties of the 

 curly top and bean mosaic viruses. 



Cooperating stations and agencies: Federal-grant projects - 



Colo,, Idaho, Oreg., Wash., Wyo., AMS 



OTHER REGIONAL RESEARCH PROJECTS REFERRED TO IN THIS SUMMARY BUT 



SUMMARIZED ELSEWHERE 



NC-7 New Plants - The Introduction. Multiplication. Preservation and 

 Evaluation of New Plants for Industrial and Agricultural Use . 

 See ARS-23-8-12. 



NC-35 Potato Improvement Through Parental Line Breeding . 

 See ARS-23-8-22-b. 



NE-9 Discovery and Preservation of Valuable Plant Germ Plasm . 

 See ARS-23-8-12. 



NE-32 Breeding Sweet Corn Hybrids Adapted for the Northeast . 

 See ARS-23-8-22-a. 



S-19 Plant Parasitic Nematodes . See ARS-23-8-17-a. 



W-38 Nature and the Influence of Crop Residues on Fungus Induced 

 Root Diseases. See ARS-23-8-17-a . 



