This section is from the book "The Gardener V2", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
Must I plant large, middle-sized, or small Potatoes 1 is a question often asked by amateurs and the uninitiated; and it is not to be wondered at, considering the diversity of opinion held by practical men. You will be told by one successful cultivator, large Potatoes are best for sets; another cultivator, whose authority on the subject may be quite as weighty, will tell you not to plant large Potatoes, or your young Potatoes will be robbed of a great amount of nourishment when they most require it. I have seen good crops of Potatoes from all kinds of sets; so I have come to the conclusion that soil and cultivation have more to do with the proper development of the Potato than anything else, provided the season is favourable. We had very good crops of Potatoes here last season - 800 lb. of Red Regents from 96 square yards was the largest and heaviest lot. We had also a splendid crop of Patterson's Victoria. The ground upon which they were grown is very black and heavy. It was trenched in the autumn, and vegetable soil spread over it when the Potatoes were planted. Middle-sized Potatoes were used as sets for the Regents, and large Potatoes for Patterson's Victoria. They were planted about 6 inches deep, 2 feet between the rows, and 18 inches between each plant.
I noticed where there was a particularly fine root, an extra quantity of vegetable soil was sure to be near it. What I call vegetable soil is leaves and all kinds of rubbish thrown into a heap, gas-lime being mixed with it. We used gas-lime for the first time three years ago; since then, the crops of Potatoes have been much larger in size and quantity.
E. L. M. Ringwood.
 
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