 ... bleeding." This impairs the vigor of the root system, and consequently of the sprouts. Since sprouts are exceedingly brittle during the first year, timber cut in winter should be taken from the woods before sprouting begins in the spring; otherwise...  Bulletin (United States. Division of Forestry) - Էջ 171904Ամբողջությամբ դիտվող - Այս գրքի մասին
 | Raphael Zon - 1904 - 54 էջ
...2.— AN OLD COPPICE CHESTNUT; ONLY A FEW SPROUTS PRODUCED. INFLUENCES WHICH AFFECT SPROUTING VIGOR. FIG. 1 .—ONE-YEAR-OLD CHESTNUT FROM SEED. Its occurrence...efficiency of its root system. This again depends to a certain extent on the age of the tree. In a general way it may be said that the most vigorous sprouts... | |
 | 1905 - 284 էջ
...only after the twentieth year. The yield per tree averages between ij4 and 3 bushels or even more. The chestnut is a long-lived tree, attaining an age of 400 to 600 years. YALE UNIVERSITY FOREST SCHOOL NEW HAVEN, CONNECTICUT, USA A TWO YEARS GRADUATE COURSE is offered, leading... | |
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