Studies on peach sick soil. VI

Some factors affecting the growth of replants in old peach soil

Abstract

The effect of old peach soil on the growth of replanted peach trees was observed in relation to some growing factors.
1. Young peach trees planted in pots with the old peach soil of pot culture grew less than those treated with the old peach soil of orchard.
2. The growth of replants in the old peach soil was not so markedly retarded in case of sand as in case of loam or clay loam. Sometimes, it was rather promoted in case of sand.
3. The old peach soil of pot culture in the open air inhibited less the growth of replants than that under glass.
4. With increasing growth rate as caused by soil moisture or age of replants, a difference of tree growth became greater between in the old peach soil and in the non-peach soil.
5. Even the peach trees the growth of which had been much retarded in the old peach soil, were refreshed normally when transplanted in the nonpeach soil.