108 
Experiments on the Use of Phosphates in 
mineral superphosphate at its price delivered here. Plots of one- 
twentieth of an acre were marked out, and the manures, previously 
well mixed with dry sand, were applied broadcast and harrowed 
into the land. The swede seed was afterwards drilled on the 
27th of May and the land again harrowed. The plants came 
up well, but all on this part of the field were unfortunately 
destroyed in the early stage of their growth by rough winds. 
The plots were again drilled on the 19th of June, a time which 
generally answers very well for swede-planting in this district, 
but the dry and hot month of July proved very trying to all 
root-crops that season, and especially to these, which did not 
get quite a good start. The crop was hoed out carefully and 
the plants left somewhat thick, but they afterwards suffered 
from drought and insect attacks and became rather thin in 
places. 
About the middle of August, after a long period of hot and 
dry weather, the plots were looked carefully over and the 
following notes were taken : — 
Plot 1. Small and thin in plant ; the worst plot. 
Plot 2. Much better than 1 ; similar to 7. 
Plot 3. Better than Plot 2. This and 5 are next best to 4. 
Plot 4. The best plot. 
Plot 5. Similar to 3. 
Plot 6. Rather thin in plant, but roots nearly as good as 5 
and slightly fresher. 
Plot 7. As good as 6 ; similar to 2. 
Plot 8. Second worst plot; about as 1. 
Weight, &c. of Swedes grown with various Phosphates at 
ToBNEY Warren, 1869. 
Plots 
Acre. 
Kinds of Pliospliates 
applied. 
Quan- 
tity of 
Manure 
per 
I'lot. 
Quan- 
tity of 
Manure 
per 
Acre. 
Weight of 
Roots per 
Plot. 
Weiftlit of 
Roots per 
Acre. 
No. of 
Roots 
per 
Plot. 
Average 
weight of 
Roots in 
ounces. 
lbs. 
cwts. 
cwts. qrs. lbs. 
tons. cwts. qrs. 
1 
5 ^ 27 
5 in 3 
784 
13-69 
2 
Phnspliorite powder . . 
45 
8* 
10 0 0 
10 0 0 
1055 
16-98 
3 
22J 
4 
10 2 4 
10 10 3 
1044 
18-08 
4 
Dissolved bones . . 
221 
4 
12 0 7 
12 1 1 
1040 
20-77 
5 
Dissolved coprolito .. 
28 
5 
12 0 9 
12 1 2 
1088 
19-89 
6 
Copvolitc ])owder 
42 
10 2 9 
10 3 2 
997 
19-00 
7* 
Precipitated phosphate 
28 
5 
10 2 0 
10 2 0 
1003 
18-75 
8 
7 2 0 
7 2 0 
924 
14-54 
There are one or two points which will not escape the atten- 
tion of practical men. First, the small number of roots in 
This sliould have been applied at the rate of 6 cwt. to the acre. 
