77 



Little Hoos Field 

 PLAN OF ROTATION PLOTS 



Arranged to test the RESIDUAL VALUE of VARIOUS MANURES in 

 one, two, three, and four years after their application. Produce per acre. 



NOTES AS TO MANURES. 



In 1919 a new &ysteni of manuring was beftun. The manure for each plot (except of series A and B) ^vas 

 rationed at 40 lbs. Nitrogen, 100 lbs. Calcium Phosphate, and 50 lbs. Potash per acre. Each plot was supplied 

 with as much of its particular manure (shoddv, liiiano, ^:c.) as possible without exceeding the receipt in 

 any of the three rationed ingredients. .\ny dehcit in either of these three was then made good by adding the 

 necessary quantity of Sulphate of Amm., Superphosphate, or Sulphate of Potash. Series A and B left as before. 



No manure was applied in 1917 or 1918. For manures 1904-17 see Report for 1915-16-17. 



Figures in italics denote unmanured plots. The yields on the plots to which the manure was applied in a 

 given year are printed in heavy type. 



