1018 



Walter H. Burkholder 



TABLE 1. 



Results of an Experiment to Determine the Period op Susceptibility 

 of the Bean Plant to Fusarium martii phaseoli 



Date of planting 

 (1915) 



Number of days 

 until inoculation 



July 14 

 July 30 

 July 30 

 July 30 

 July 30 

 July 30 

 July 31 

 July 31 



None . . 

 Check.. 

 8 days . 

 Check . 

 16 days 

 Check. 

 31 days 

 Check . 



An experiment was conducted to determine whether the pathogene can 

 live over winter in the compost heap and be carried back to the land. 

 For this experiment manure was procured from a sheep barn where bean 

 straw had been fed. The experiment was run in duplicate, one plot 

 being at Perry and one at Ithaca. It is frequently almost impossible in 

 certain counties to obtain land free from this pathogene. Since Ithaca 

 is out of the bean-growing district, it was more or less certain that the 

 land there would not be contaminated with the fungus. The experi- 

 mental plot at Perry was situated in the center of an old apple orchard 

 and also proved to be free from the organism. 



In each plot two rows of beans, of approximately 150 plants each, were 

 used. In some instances the seed-corn maggot (Phorbia fusciceps Zett.) 

 and the slug (Agriolimax sp.) destroyed a number of plants. One row 



TABLE 2. Results of an Experiment to Determine Whether Fusarium martii 

 phaseoli May Winter in the Compost Heap and Be Carried Back to the Land 

 thf. Following Season 



