 | Massachusetts Agricultural Experiment Station - 1904 - 630 páginas
...immature. Conditions which favor a soft growth and immaturity of wood. Various causes may be respoasible for this, such as growth in a low, moist soil, too...Insufficient soil covering, such as lack of organic matter, light mulching and snow covering in winter. Location in unusually windy and exposed places, etc. Species... | |
 | Massachusetts - 1906 - 1366 páginas
...withstand unusually severe conditions, sine« unusual seasonal peculiarities often render them less hard}'. For example, the Labrador tea, which is a native of...Insufficient soil covering, such as lack of organic matter, Jight mulching and snow covering in winter. Location in unusually windy and exposed places, etc. Species... | |
 | 1912 - 546 páginas
...resting stage under abnormal conditions, and may therefore possess little power of resistance to cold. Some of the conditions which underlie winterkilling...Insufficient soil covering, such as lack of organic matter, light mulching and snow covering in winter. Location in unusually windy and exposed places, etc. Winter... | |
 | 1916 - 760 páginas
...resting stage under abnormal conditions, and may therefore possess little power of resistance to cold. Some of the conditions which underlie winterkilling...Insufficient soil covering, such as lack of organic matter, light mulching and snow covering in winter. Location in unusually windy and exposed places, etc. Winter... | |
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... unfavorable for normal plant development. A very dry summer affects the normal growth of vegetation, and if a warm and unusually wet fall follows such a period the plant will go into the winter resting stage under abnormal conditions, and may therefore... 