ON BOTANICAL COMPOSITION OF HERBAGE 



59 



W 



w 

 s 



a> 



f 

 



I 



B, Cambridge coprolites. C, Lime. 3, Algerian phosphate, 5. Open hearth (high 

 soluble) basic slag. 6, Untreated. 8, Gafsa phosphate. 9, Tunisian phosphate. 



11, Egyptian phosphate. 13, Superphosphate. 15, Super phosphate and lime. 16, Un- 

 treated. 17, Open hearth (high soluble) basic slag. 18, Open hearth (fluorspar) 

 basic slag. H, Cleveland phosphate. K, Untreated. 



FIG. 11. Botanical composition of the Hay, by weight, at Great Mulgraves, 

 Horndon-on-the-Hill. Season, 1920. ot7 London clay. 



DISCUSSION OF THE RESULTS OF THE 

 BOTANICAL ANALYSIS 



Although a rapid and large increase in the amount of clovers 

 present in the herbage has followed the application of phosphates 

 at the various experimental centres, and although the various phos- 

 phates appear to be equally effective in this respect, there are clear 

 indications that the effect of the phosphates on the herbage is not 

 confined to the clovers alone. At Martin's Hearne, Tysea Hill and 

 Latchingdon for example (see Figs. 7, 8 and 10), the better types 

 of grasses are greatly encouraged as a result of the application of 

 phosphates. The meadows at Martin's Hearne and Tysea Hill have 

 been down for a considerable time. The nitrogen content and the 



