280 



STATE BOARD OF AGRICULTURE. 



Three tlioiisaiid acres of potatoes have been listed for iuspectiou during 

 the season of 1022. 



To compare Michigan certified seed potatoes with seed from other 

 sources over 1,000 bushels of Michioan certified seed were placed in 

 tests in southern Michigan, Iowa, Tndian;a, Illinois, Ohio and Pennsyl- 

 vania. In each test the Michigan certified seed and the seed with which 

 it was compared were grown under tJie same soil aind cultural conditions 

 and accurate records of the yields were secured. 



The following table gives a sununary of tJie results secured : 



In order to test tlie yielding qualities of the various lots of potatoes 

 planted for inspection, 131 strains of Russet Rurals and Green Moun- 

 tains were secured from growers who applied for the inspection work 

 and Avere plamted in a demonstration plot. The yields varied from 368 

 bushels per acre for tlie best strain to 108 bushels per acre for the lowest 

 yielding strain. Work with these strains is being continued in 1922; 

 240 other lots of potatoes have been planted this year in -a similar test. 



A variety test demonstration, consisting of 29 varieties planted at tlie 

 Midiigan Agricultural College, showed that the Russet Rural or Late 

 Petoskey was the best late variety and that the Irish Cobbler was the 

 best early variety. 



The following is a statistical summary of tlie work done between July 

 1, 1921 and July 1, 1922 : 



Total number of demonstrations 47 



Farm Visits" made 341 



Meetings Held at Demonstrations 25 



Attendance at Such Meetings 388 



Lecture Meetings 60 



Attendance at Lectures 3,213 



Special articles have been prepared for Agricultural papers and for 

 County Agricultural Agents. 



VcffetaMes: 



Vegetable demonstrations were conducted with cucumbers, but due to 

 severe dronghtis no satisfactory results were secured. 



Fertilizer demonstrations conducted in Sanilac county on cannijig 

 peas showed that acid phosphate gaNe an increase yield of shelled peas of 



