of Manures Applied to Pasture. 



37 



is that the action of the second dose of slag is much more 

 rapid than the first dose at both Cockle Park and Sevington, 

 and this is what one would expect when it is remembered that 

 there are a greater number of clover plants on the ground 

 to respond to a second dose than was the case when the first 

 dose was used. Of course, it is conceivable, that through 

 time — and more so on some soils than others — land may 

 become "white clover sick," just as it may become "sick" 

 to cultivated red clover, but there is little indication of this at 

 present. 



At Cockle Park, where the "Manuring for Mutton " experi- 

 ment has been continued beyond the nine years for which 

 it was originally designed, we can see the effects of repeating 

 the 10 cwt. dressing of slag on Plot 3 for 1906, and we can 

 also see the results of a third and fourth dose of slag on 

 Plot 4 for 1906 and 1909 respectively. The whole course of 

 these two plots, and of Plot 6 (continuously unmanured) can 

 be best followed graphically in Table XVII. 



Taking, first of all, Plot 3, which got 10 cwt. of slag per 

 acre for 1897, and nothing more till 1906, when it again got 

 the same dressing, it will be seen that in 1898 and 1899 the 

 yield mounted very rapidly, reaching its culmination in the 

 latter year. In 1900 the fall was very striking, the loss in 

 that year being much greater than the gain in the previous 

 one. From this point on to the ninth year (1905) the 

 reduction in mutton-production is very uniform, being 

 arrested, though only temporarily, in 1902, which was a 

 year very favourable for grazing, as is shown by the way in 

 which the yield even of Plot 6 goes up in that year. In the 

 ninth year, as will be seen, the yield of Plot 3 is still 10 lbs. 

 above what it may be assumed to have started with before 

 the slag was put on (see the beginning of the curve for Plot 6), 

 and is 33 lbs. above the yield of Plot6 in the ninth year. In the 

 autumn of that year 10 cwt. of slag was repeated on Plot 3, 

 with the result that in the tenth season the mutton produced 

 experiences a large increase, being, in fact, 62 lbs. above 

 what it was in 1905- In 1907 the mutton produced is again 

 62 lbs. higher than in the previous year (1906), and that 

 represents the culminating point of the second cycle, from 

 which in 1908, 1909, and 19 10 there is a gradual descent. 



