British Dairy Farming. 
131 
M. Lecouteux, shows the quantity of nitrogen and nourishing 
matter per ton and per hectare of the different varieties of forage- 
crops which he grows, together with the relative nutritive value 
of each. I have adapted it to British weights. 
Crop. 
Per Ton of Forage. 
Per Hectare of Forage. 
Per 
Relative 
Value. 
Hectare. 
Nitro- 
Non-Nitro- 
Nitro- 
Non-Nitro- 
2-472 acres. 
genous. 
genous. 
genous. 
genous. 
Tons. 
lbs. 
lbs. 
Cwt. 
Tons. cwt. 
Green maize 
80 
27 
254 
19 
9 
0 
9-41 
15 
47 
470 
6 
3 
3 
9-95 
15 
29 
216 
4 
1 
9 
7-38 
20 
79 
155 
14 
1 
8 
1-97 
40 
56 
198 
20 
3 
10 
3o2 
Oats (grain) 
„ (straw) 
2i 
4 
270 
79 
1388 I 
814 5 
9 
3 
0 
6-34 
Tri folium inoarnatum 
15 
61 
180 
8 
1 
4 
2-96 
20 
79 
180 
14 
1 
12 
2-28 
Upon the average of the above crops the relative nutritive 
value is 1 to 4 • 90, as nearly as possible equivalent to good hay, 
and consequently the type of food for milking cattle. The 
nitrogenous matter yielded by the various crops is as follows : — 
Nitrogenous Matter per Hectare of 2i acres. 
Cabbage , .. .. 1 ton. 
Giant maize 19 cwt. 
Vetches before flowering and red clover .. 14 „ 
Oats, grain and straw 9 „ 
Trifolium incarnatum 8 „ 
Potatoes G „ 
Swede turnips 4 „ 
It is thus seen what an immense quantity of nitrogenous matter 
is taken from the soil when double or triple cropping takes place, 
trifolium and cabbage extracting 28 cwt., and trifolium and 
maize 27 cwt. Let us now deal with the nutritive matter 
obtained from the three leading crops, i.e., those which yield the 
largest amount of nitrogen. 
Tons 
per 
Acre. 
Nutritive Matter per cent. 
Nutritive Matter per Acre. 
Nitrogenous. 
Non-Nitrogenous. 
Nitrogenous. 
Non-Nitrogenous. 
lbs. 
lbs. 
Cabbage 
16 
2-5 
13-9 
900 
5004 
20 
1-8 
7-7 
830 
3482 
Vetches 
8 
31 
7-6 
558 
1368 
K 2 
