412 
VEGETABLE GARDENING 
io per cent each of phosphoric acid and potash should 
meet the requirements of this crop. When grown for 
the cannery it is desirable to haul the vines back to the 
farm for their fertilizing value. 
560. Planting. — For the earliest crop the seed should 
be planted in March or as soon as the ground can be 
prepared. Wrinkled varieties are often planted as early 
as the smooth sorts, but it is safer to plant them a trifle 
later. For the fall crop in the North, the dwarf varie- 
ties should be planted early in August. A fall crop is 
seldom attempted since results are quite uncertain. 
The depth of planting must be determined by the char- 
acter of the soil and the season of the year. For the 
first planting, shallow covering, probably with only an 
inch of soil, is an advantage, although 2 inches would 
not be too much in light soil. As the season advances, 
planting should be deeper, so that the roots will be where 
the soil is cooler and more moist. When planted 5 or 6 
inches deep, the covering should be shallow at first, and 
the furrows gradually filled in after the plants are up. 
Planting distances depend upon the height of the 
vines, whether the vines are to be supported or not, and 
the purpose of the crop. When grown for the cannery 
they are often sown with a grain drill, and the crop 
harvested with a mowing machine and a hay rake. They 
are also sown broadcast sometimes, and the seed har- 
rowed in. When sown in drills the space between rows 
varies from 18 inches to 3 feet. It generally pays to use 
plenty of seed, especially with dwarf varieties. 
561. Supporting the vines.— When grown for commer- 
cial purposes the low varieties are generally planted and 
no support is provided. In smaller plantations, brush is 
often used. A neat, convenient method is to plant in 
double rows 6 to 8 inches apart, and stretch poultry 
netting of the proper height between the rows. Another 
very good plan is to drill in single (or double) rows, 
