ON BOTANICAL COMPOSITION OF HERBAGE 



53 



out the whole winter and early spring, there was never any visible 

 difference in the clover content between the treated and untreated 

 plots. 



A chemical examination of the soils on the treated and untreated 

 plots showed that at least one-half of the original dressing of phos- 

 phoric acid was still present in an available form in the treated plots 

 (see p. 105). The disappearance of the clover during 1919 was not 

 therefore due to lack of phosphates. 



TABLE XXV. BOTANICAL COMPOSITION OF THE HAY 

 BY WEIGHT AT MARTIN'S HEARNE 



Sample taken: August 9th, 1920 



TABLE XXVI. BOTANICAL COMPOSITION OP THE HAY 

 BY WEIGHT AT TYSEA HTLL 



Sample taken: August 23rd, 1920 



From March 1920 onwards the plots were inspected closely every 

 week, and towards the end of May it became evident that the clover 

 plant was again beginning to make headway, and by the end of July 

 all the plots at Martin's Hearne, and particularly the rock phosphate 

 plots, were covered with a vigorous growth of red and white clover. 

 At Tysea Hill, less than half a mile away, there was very little clover 

 showing, any difference there may have been between the treated 

 and untreated plots in this respect was not discernible. Samples of 

 hay from both centres were taken when the crops were cut, and the 

 results of a partial botanical analysis are set out in Tables XXV 

 and XXVI. 



