67 



EXPERIMENTS IN SOIL MANAGEMENT. 



CHALKING. 



Sawpit Field. 



% 



1. Chalk carted from HarpeiKlen New Sewajje beds. February. 1913. 



2. Chalk (lufj on Sawi)it I'ield. November. hilZ, to March. 1913, and spread as dufi. 

 Journal of Board of Ajiriculttire. October 1916 (Vol. XXIII, No. 7, page 625) gives a 



detailed account of the method and cost of Chalkin{{. 



Great Harpenden Field. 



Unchalked 



Chalked in 1913 . 

 (about 20 loads 

 per Acre) 



1916. 



Unchalked 

 Chalked in 1913 



1914. 



Tons 



1915. 



HAKLEY. 

 (Plumage Cross). 



WHE.\T. 

 (Squareheads Master). 



Dressed 

 Grain. 



Straw 

 per 



Yield Weight I ^"cre 



per I per 

 Acre. Hu«hel. 



Bush. ' lb. cut. 



W31-9 

 E 40 5! 



W3r9' 

 E 35 9 



556 

 55-9 



555 

 549 



170 

 21-2 



18-8 

 190 



Total 



produce 



per 



Acre. 



lb. 



3584 

 4228 



3859 

 3525 



31 7 

 273 



WHEAT. 



(Wilhelmina). 



595 I 39 7 



I 

 59 1 373 



6631 



6100 



WINTER OATS. 



3661 

 3850 

 4825 

 4553 



1917. 



WHE.\T. 

 (Red Standard). 



WHEAT. 



(Squarehead's Master). 



Unchalked 

 Chalked in 1913 



242 ' 612 

 249 612 

 277 608 



187 I 3809 ii 222 I 597 ! 179 | 3539 



179 



58-8 ! 15-9 ' 3079 



600 i 180 3643 



W — West portion of plot. E = East portion. 



