Grass Experiments. 
261 
2. Improvement of Old Pasture. 
(a) Broad Mead. 
1905. 
The manurial applications were all put on in the winter 
of 1904 (November 25-30) and the plots were chain-harrowed 
and rolled in the spring of 1905. By July 8, 1905, the hay 
crop was ready for cutting, and was carted on July 12. The 
weights of hay are given in Table XII. 
Table XII . — -Grass Experiments {Broad Mead). 
Produce of haj’, 190.5, and botanical separation. 
Weight of 
Hay per acre 
Botanical separation 
Plot 
Manures per acre in 1901 and 1904 
Gra- 
mineaj 
Legu- 
minosao 
Miscel- 
laneous 
1 
Basic slag, 10 cw(. ; nitrate of 
potash, 1 cwt. .... 
T. c. q. lb. 
2 6 0 0 
Per 
cent. 
94-8 
Per 
cent. 
20 
Per . 
cent. 
3-2 
2 
Superphosphate, .5 cwt. ; sulphate 
of potash, 1 cwt. 
2 3 10 
89-4 
.5-9 
4-7 
3 
Basic slag, 10 cwt. ; sulphate of 
potash, 1 cwt. .... 
2 3 3 0 
89-6 
7-1 
3-3 
4 
No manure ..... 
1 18 2 0 
93-3 
3-9 
2-8 
5 
Lime, 2 tons ..... 
2 110 
90-5 
6-3 
3-2 
6 
Farmyard manure, 12 tons . 
2 13 0 
93-9 
2-9 
3 2 
All the applications, it will be observed, gave an increase over 
the unmanured plot (4). The least increase was from the lime 
and the farmyard manure. Between basic slag and super- 
phosphate, each used along with sulphate of potash, there was 
nothing to choose, while the highest return came from basic 
slag along with nitrate of potash. 
Samples of the hay were taken from the different plots and 
were analysed botanically at Rothamsted, by the kindness of 
the Director, Mr. A. D. Hall. When this was done previously, 
in 1903, it was found that on the plots where potash manures 
had been used, the clovers tvere markedly increased, the 
percentage of leguminosae going up to 27 in the case of plot 2 
(superphosphate and sulphate of potash), while with farmyard 
manure it was so low as 8'5. In 1905, however, there were not 
these differences, and the leguminosae went down very con- 
siderably, the highest percentage being 7’1 in the case of plot 3 
(manured with basic slag and sulphate of potash). Farmyard 
manure also continued to show a low percentage of clovers. 
In 1906 the plots were all gi’azed. 
