88 



RESULTS WITH GRASS 



The Rothamsted grass experiments excellently illustrate 

 the many difficulties which attend the attempt to produce 

 continuously crops of hay of good quality by means of 

 artificial manures. They emphasize especially the necessity 

 for an adequate supply of potash and phosphoric acid as 

 essential both for the quantity and quality of the produce. 



2. Experiments at Cirencester. The experimental 

 application of manures to a poor pasture at the Royal Agricultural 

 College commenced in 1888, and has been continued down 

 to the present time ; the results are annually published in 

 the Agricultural Students' Gazette. The superphosphate and 

 kainite were each applied at the rate of 5 cwts. per acre. The 

 dressing of sulphate of ammonia was 2 cwts. per acre. Farmyard 

 manure was applied at the rate of 12 tons per acre. 



The hay crop was not weighed in 1888 and 1893; tne 

 following table gives therefore the mean produce of nine years, 

 1889-2, 1894-98. The land was grazed by cattle in the 

 autumn, the weights of hay thus refer to the first cutting only. 



TABLE XXVI. 



PRODUCE OF HAY VARIOUSLY MANURED AT CIRENCESTER. 

 AVERAGE OF NINE YEARS. 



The unmanured produce is almost the same as that at 

 Rothamsted. Kainite and superphosphate, when applied 

 separately, have very little effect, but when applied together 



