This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
From a commercial point of view it is essential to secure as small a quantity of chats as possible in a potato crop. To secure this desirable result it is necessary to give sufficient space between the rows and the "sets". The following results from a square pole of ground show that fewer small tubers will be produced by planting at 3 ft. apart than by planting at 2 ft. apart: -
Distance every way. - | Large Tubers. | Small Tubers. | Total Number. | Per cent of Chats. | Per cent of Ware. | Average per Tuber. | |
3 ft. apart | 822 | 298 | 1120 | 26.6 | 73.4 | 140 lb. | 2 oz. |
2 ft. apart | 897 | 798 | 1695 | 47.0 | 53.0 | 128 „ | 1 1/5 ,, |
This experiment again is a strong argument in favour of wider planting than usual. Not only is a heavier crop produced at less cost, but the general sample in the 3-ft.-apart plots will be superior to that from the 2-ft.-apart ones.
 
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