246 



Improvement of Grazed Pastfres. 



[June, 



Eed fescue increased on the most improved plots and also 

 on the ground lime plot. On close examination, it was found 

 that the appearance of the grass differed greatly in the two 

 cases. On the ground lime plot the stems were purplish and the 

 grass unattractive, while on the improved plots it was of 

 excellent colour and well grazed. 



The two grasses which seem to have been affected most ara 

 Sieglingia decumhens (Triodia) and Quaking Grass. Both w^ere 

 greatly reduced on the most improved plots. Even ground lime 

 had caused some decrease. 



Yorkshire Fog, on the other hand, increased on the more- 

 improved plots, but not in proportion to the extent of the 

 improvement. The increase on the superphosphate with lime 

 plot and the decrease on the ground lime plot appear to indicate 

 that, under the conditions of the experiment, treatment had 

 a special effect upon this grass. 



As usual, a marked improvement was accompanied by an 

 increase in Leguminosse, especially White Clover, and this 

 increase w^as exceptionally marked on the Gafsa plot. 



Table VII. — Some Percentage Frequency Results for Centre 0. 

 Fourth Summer. 





Basic 

 Slag. 



Gafsa 

 Phosphate. 



Super- 

 phosphate. 



None. 



Super- 

 phosphate 

 with 

 Ground 

 Lime. 



Ground 

 Lime. 



Af/ro.^tis tenuis ... 



43-8 



39-5 



41-3 



34-5 



36-9 



39-1 



Fc. si lira rubra ... 



15-8 



20-9 



13-2 



12-5 



18-5 



19-8 



A nth o.van tli u m odora t ii h>i 



4-4 



4-4 



3-8 



4-2 



3-5 



4-8 



S'lrijlingia decunthens ... 



1-6 



0-6 



2-6 



6-5 



0-7 



.8 



Hiilcus lanatus ... 



5-6 



6-4 



6-2 



4-5 



11-0 





Br 'iza media 



0-8 



1-5 



6-7 



13-7 



2-G 



8-5 



Tr'ifol'ium rejjem 



15-6 



20-0 



13-5 



1-3 



loo 



2-4 



Loi us corniculafvs 



1-8 



0-5 



1*2 



1-2 



0-7 



2-4 



Summary and Conclusions. — The main object of this article 

 is to place on record and render available some botanical data 

 obtained from manurial experiments under three different sets 

 of conditions on very poor pastures in North Wales. For this 

 reason, no attempt has been made to discuss the results at all 

 fully. From the data given, however, the following conclu- 

 sions may be draw^n: — 



(1) At all three centres a very marked improvement was 

 observed on some ctf the plots. (This was, however, not the 

 case at some centres w^here similar experiments were carried 

 .out.) 



