174 Mortier F. Barrus 



main field. This plan would require two years to get seed for the main 

 field, but would afterward permit an economy of time and effort. 



2. Location of the seed plot at a considerable distance, preferably 

 40 rods or more, from other bean fields or garden patches containing 

 beans. If an increase plot is used, it should be located at some distance 

 from the seed plot and also at some distance from the main field. This 

 is to prevent, as far as possible, the transfer of spores of the causal fungus 

 from infected plants to plants in the seed plot. The shorter the distance 

 between the seed plot and beans growing elsewhere, other things being 

 equal, the greater is the chance that the beans in the seed plot will become 

 inoculated. 



3. Location of the seed plot and the bean field on soil on which beans 

 were not produced the preceding year. 



4. Cultivation of the seed plot before the cultivation of other beans 

 when the same tool is used for both; or, better, reservation for the seed 

 plot of a cultivator not used in other bean fields. 



5. The precaution of not visiting the seed plot when vines or soil are 

 wet. This precaution should apply to all bean fields. Care should be 

 taken, even when the vines are dry, not to go directly into the seed 

 plot from other bean fields. 



6. Prompt removal and destruction of any plants in the seed plot 

 found to be affected with anthracnose. 



7. Application of bordeaux mixture to the plants in the seed plot several 

 times during the season, in order to prevent infection from spores that 

 may be carried there. 



8. Selection, before the beans are harvested, of clean and otherwise 

 desirable pods from the seed plot or other fields, in order to obtain healthy 

 seed for planting the succeeding year's seed plot. 



9. Careful harvesting of the bean plants in the seed plot and their 

 storage in a place separate from other bean vines. 



10. The threshing of the beans with a flail or in other ways so that 

 a mixture with other bean seed cannot take place. 



11. Storage of the seed in a cool, dry place until planting time the 

 succeeding year. 



12. Careful hand-picking of this seed for the increase plot or the 

 main field in order to remove all discolored or otherwise unsatisfactory 

 seed. 



