THE VEGETABLE GARDEN 199 
marked off on these, no other measure will be needed 
for finding out how far apart the rows are to be. 
The wheel hoe. One of the most convenient tools is 
the wheel hoe. A single implement costing from three 
to four dollars will answer the purpose, although better 
work can be done with one of the more expensive kinds. 
The one shown in Fig. 107 may be used in any garden 
where the rows are a foot apart. It will save time even 
if the rows are no longer than ten feet. With rows 
thirty inches apart it may either straddle the rows or 
run between them. Where the rows are closer together, 
it may be used with one wheel. Under favorable condi- 
tions it can be pushed straight ahead, but better results 
may be obtained by using it with successive strokes, 
varying the length to suit the nature of soil and crop. 
FERTILIZERS 
Nitrate of soda. At the rate of two hundred pounds per 
acre nitrate of soda may usually be apphed to gardens with 
profit. Scatter the nitrate broadcast on the land at the 
time of planting and cultivate immediately afterwards. 
Mixed fertilizers. A mixed fertilizer that contains 
nitrogen, phosphorus, and potash in about the right 
proportions may be made as follows: 
Nitrate of soda . . 300 Ib. 
Fine dry loam 3 : 200 Ib. 
Acid phosphate. 4 400 lb. 
Sulphate of potash bes 100 Ib. 
Total) on oS : mete, 733 ~ 1000 Ib. 
