NITEATE OF SODA, &c. ON TURNIPS. 



193 



a At Darra, after turnips 



Nothing gave 



Sulphate of ammonia, 2 cwt. 



Grain. 



57 bush. 

 59 



b After lea, at Kothie Brisbane 



. Grain. 



Nothing gave . . 54^ bush. 

 Sulphate of ammonia, 2 cwt. 86 



c After lea, at Mill of Laithers 



Grain. 



Nothing gave . . 43 bush. 

 Sulphate of ammonia, 2 cwt. 56 



d After lea, at Lower Cotburn 



Grain. 



Nothing gave . . 35^ bush. 

 Sulphate of ammonia, 2 cwt. 57^ . . . 



31 cwt. 

 42 . 



Straw. 



40 cwt. 

 59 . 



20 cwt. 

 28 . 



Straw. 



20 cwt. 

 34 . 



Chaff. 



302 Ib. 

 118 .. 



Chaff. 

 640 Ib. 

 136 .. 



Chaff. 

 272 Ib. 



412 .. 



Chaff. 

 300 Ib. 

 336 ... 



In all these experiments, except the first after turnips, the 

 increase both of straw and grain was very considerable. The 

 manure employed for the turnip crop of the previous year may 

 account for the smaller increase in grain in the first experiment 

 made at Darra. 



It will interest the physiologist to observe how very different 

 the weights of chaff are with which the grain in the several crops 

 was covered. 



3. On turnips few experiments have been made and recorded. 

 Mr Fleming, in 1842, made one upon yellow turnips, to which 

 no farm-yard manure was added. The land was trenched out 

 of grass, and must have been in good heart, or it would not 

 have yielded from 11 to 13 tons of bulbs without any manure. 



Nothing, 1st plot, gave 



... 2d 



Sulphate of ammonia, 1 cwt. 

 Sulphate of magnesia, 1 cwt. 

 Nitrate of soda, 1 cwt. 

 Rape-dust, 15 cwt. . 



11 tons 8 cwt. of bulbs. 



12 ... 17 



24 ... 11 



14 



27 

 24 



17 



2 



11 



See my Lectures on Agricultural Chemistry, 1st edition, Appendix, p. 56. 



N 



