ON BOTANICAL COMPOSITION OF HERBAGE 



57 



Butterfields, Latchingdon. The effect of the various phosphates 

 on the composition of the flora at Latchingdon is similar to that at 

 Martin's Hearne and Tysea Hill. The botanical composition of the 

 hay is shown in Table XXIX and in Fig. 10. The contrast between 

 the treated and untreated plots is not so marked as at the other 

 two centres mentioned, but the pasture on the untreated plot at 

 Latchingdon is much superior to that at Martin's Hearne and Tysea 

 Hill (compare Figs. 7, 8 and 10). On all the treated plots the better 

 grasses, such as Lolium perenne, Phleum pratense, Cynosurus cris- 

 tatus and Poa trivialis, have improved their position at the expense 

 of the poorer quality grasses, such as Hordeum pratense, Agrostis 

 alba, Helens lanatus, etc. It is worthy of note, moreover, that at 

 Latchingdon clover forms a fair proportion of the crop by weight, 

 whereas at Martin's Hearne and Tysea Hill it was practically absent 

 during 1919. 



TABLE XXX. BOTANICAL COMPOSITION OP THE HAY CROP 

 BY WEIGHT AT WENDENS, SAFFRON WALDEN. 



Soil: chalk. Sample taken: June 19th, 1919 

 Manures sown: January, 1916 



