The New York Farmer and American Gardener's Magazine 8: 310-311 (1835)

S. P. R.
Skaneateles, Onondaga co. Aug. 22, 1835.

Change of seed—There is also a great advantage in a change of seed from different climates, and from soils of an opposite mature, if the quality be otherwise equally good. Certain varieties, if cultivated for a long succession of years on the same spot, gradually change in their nature and quality, according to the nature of the climate and soil. If this change is such as in any particular to lessen its value, the seed should be changed by substituting that which grew where such change is not produced. An instance may serve to illustrate this: “In some mountainous countries,” says Professor Bronn, “in Scotland, for example, they bring the seed from the low country and from the plains, where the climate is more mild, and consequently the seed more forward, a quality which it always preserves for many generations. We are convinced that the cultivator of this mountainous district, if he always used seed from his own crops, would reap later and later harvests, so that at last perhaps they would not come to perfect maturity; a circumstance easily explained by the short duration of the summers in the mountains. If, on the other hand, the cultivator of a flat country, the climate of which is mild, and the soil dry and light, continually made use of his own seed, it would head every year sooner, the stalks would become shorter, and the heads and grain smaller and smaller, and in time there would result but a poor produce. In this last case, the cultivator brings his seed with advantage from a country more cold, the soil of which is good and substantial.”

Change of Stock/Seed/Conditions