242 



Improvement of Grazed Pastures. 



[June, 



Owing to a very marked change observed in the herbage of 

 some of the plots at this centre by the sixth summer, the per- 

 centage frequency examination was made both in the fourth 

 summer and in the sixth. 



Table IV.— Aggregate Eesults for Centre B. Fourth and 

 Sixth Summers. 





Manure 'Basic 

 used :— Slag. 



Gafsa 

 phos- 

 phate. 



Super- ^ 



■phos- XT 

 ^ , , None, 

 phate.l 



Superphos- 

 phate with 

 Ground 

 Lime. 



1 



Ground 

 Lime. 



G ro und 

 Lime- 

 stone. 



Fourth Sum ft er. 



Plant units 

 per unit 

 area 



Gramineai . . . 

 Leguminosfe... 



Miscellaneous 



328 

 95 

 31 



298 

 93 

 15 



266 

 75 

 22 



229 

 13 

 23 



293 

 94 

 24 



277 275 

 70 1 27 

 18 16 



Total 



454 



406 



363 



265 



411 



365 318 



Percentage 

 '.Frequency 



Graminete ... 

 Leguminosge... 

 Miscellaneous 



72-2 

 20-9 

 6-8 



73-4 

 22-9 

 37 



73-3 

 20-7 

 6-1 



86-4 

 4-9 

 8-7 



71-3 

 22-9 

 5-8 



1 



'•.5-9 1 86-5 

 19-2 8-5 

 4-9 i 5-0 



Total 



99-9 



100-0 



100-1 



100-0 



100-0 



100-0 



100-0 



j Sixth Summer. 



Plant units 

 per unit 

 area 



Graminefe ... 

 Legimiinosaj.. 

 Miscellaneous 



280 

 18 

 47 



290 

 6 

 23 



268 

 4 

 31 



208 

 9 

 15 



320 

 54 

 31 



301 

 66 

 24 



304 

 46 

 27 



Total 



345 



319 



303 



232 



405 



391 



377 



Percentage 

 Frequency 



Gramineag . . . 

 LeguminosEe... 

 Miscellaneous 



81-2 

 5-2 

 13-6 



90-9 

 1-9 

 7-2 



88-4 

 1-3 

 10-2 



89-7 

 3-9 

 6-5 



79-0 

 13-3 

 7-7 



77-0 

 16-9 

 6-1 



80-6 

 12-2 

 7-2 



Total 



iuu-0 



100-0 



99-9 100-1 



100-0 



1000 



100-0 



* Average figures for three untreated plots. The figures for these three plots 

 varied but little. 



In the fourth summer, the most improved plots appeared to 

 be those on which basic slag, Gafsa, and superphosphate with 

 ground lime were respectively applied, but improvement was 

 also noticeable on the superphosphate and ground lime plots. 

 On the ground limestone plot improvement was very small. 

 Table IV shows that at this time there was also a very marked 

 difference in the herbage of the plots. On the most improved 

 ones, there was a very marked increase in the number of plant 

 units per unit area, especially on the basic slag plot, and a striking 

 feature is the similarity of the figures for Leguminosse on the 

 three most improved plots. In the percentage results, this 

 similarity is obscured and the figures for leguminous plants are 

 relatively near each other for the five most improved plots. 



