44 



THE ESSEX EXPERIMENTS 



TABLE XIX. WEIGHT OF HAY AT WENDENS, SAFFRON WALDEN 

 Manures sown: January, 1916 



* 2-3 inches fell on May 20th. 



FIG. 6. Yield of Hay (average of 5 years) for the various 

 Phosphate Plots at Wendens, Saffron Walden. Soil Chalk. 

 3, Untreated. 2, Gafsa rock phosphate. 6, Open hearth (high soluble) basic 

 4, Open hearth (high soluble) basic slag. 1, Basic Bessemer slag. 



