1922.] Trials of New Varieties of Cereals. 



u Half-Drill-Strip M Method. — Every new race under test is 

 separately compared either with an established " standard " 

 race, or with a local race of the same cereal, or with both, 

 hereinafter in either case called the " control." The seed used 

 for all the plots at any station should have been grown and 

 harvested under equal conditions. 



The new race arid a control race are each grown on ten or 

 more alternating strips of about l/20th acre per strip — as 

 shown below — where ' ' A " represents the new race and C 

 the control. 



Wheel 



track 



n ii 



c. 



o. 











A. 



0. 









Ae 

 C. 



1. 



2. 



--m — 



— -> 







3. 



(Z. — 







A. 













A 



-rr t» -\r 



A -A. A 





seqs X X X > 



i X X 



-d._ 2.9. : 



A « 40*. 



< m 



C 9 0* 



Fig. 1. — Showing Half-drill Strips. 



Drilling. — The width of each " variety strip " will be that 

 of the drill employed for seeding. If, as is generally the case 

 with corn-drills, the coulters are an odd number (either 13 or 

 15 at 7 to 8 in. apart), the centre coulter is put out of 

 ai t ion, as is easily done with any make of corn-drill. In the 

 centre of the seed-box a partition is placed : most corn-drills 

 are constructed with a centre partition. One compartment of 

 the seed-box is filled with seed of the control and the other 

 with seed of the new race. 



