454 MANURING OF POTATOES. 

which produced a crop larger by about 15 cwt. per acre than 
that grown on 12 tons farmyard manure. In the Glasgow 
experiments of 1899, also, three combinations of artificials were 
tried, each of which produced a crop nearly 1 ton per acre 
heavier than that grown with 10 tons farmyard manure alone, 
and which only fell slightly short of that grown with 20 
tons farmyard manure. 
These successful combinations of artificial manures, and 
the amount of effect they were capable of producing on the 
potato crop, as compared with farmyard manure, are fully 
shown in the following instructive table :— 
Lxperiments on the Matncrop Potato tn 1899—average of 
9 farms (Glasgow sertes). 







| Loe) 
A | otal Produce 
Plots | Manures Applied per Acre. | per Acre. 
: tated ; A ns 
Tons. Cwts. Ors. 
No Manure - - - - - 4 2 2 
| 
to tons Farmyard Manure - - - = =} 6 4 I 
20 ;, 29 oe) 2 Fi 3 7 aul 7 6 2 
\ 
| 
6 cwts. Superphosphate ; 
D 2 ,, Sulphate of Ammonia 
| 1 ,, Nitrate of Soda - - 7 3 2 
2 ,, Sulphate of Potash 
(91 per cent.) 
| ‘ 6 cwts. Superphosphate | 
E | 2 ,, Sulphate of Ammonia { | Ss y = 
(tees) eNilirate ofisoda 5 : ; 
| ee Ibs. Muriate of Potash 


R,. PATRICK WRIGHT. 
