. Agricultural meteorology. Meteorology, Agricultural. [from old catalog]. FROST AND FROST DAMAGE 271 603. The growing season.—The potential growing season in any locality is usually considered to be the average number of days between the spring and fall killing frost dates. A map showing these days is given in Fig. 78. For tender crops that are killed by frost, the possible grow- ing season is less than indicated on the chart, because the killing frost dates are for the average when frost occurs one year in two. Killing frosts occur after the spring and before the fall date frequently enough
. Agricultural meteorology. Meteorology, Agricultural. [from old catalog]. FROST AND FROST DAMAGE 271 603. The growing season.—The potential growing season in any locality is usually considered to be the average number of days between the spring and fall killing frost dates. A map showing these days is given in Fig. 78. For tender crops that are killed by frost, the possible grow- ing season is less than indicated on the chart, because the killing frost dates are for the average when frost occurs one year in two. Killing frosts occur after the spring and before the fall date frequently enough to make the possible length. Fig. 77.—Average dates of the first killing frost in the fall. of the growing or frost-free period frequently less than the average. Further, such crops as are not killed by temperatures at or somewhat below freezing, have a longer possible growing sea- son than the frost-free dates. Winter grains and grass, for example, will continue to grow in the fall after a killing frost and will begin growing in the spring and winter long before the average spring killing frost date, if favorable tempera- tures prevail. 604. Vegetative periods.—The temperature at which most field and garden crops will begin to grow is probably close to 6° (C.) or ° F. Hence the growing or ''vegeta-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, John Warren, 1863- [from old catalog]. New York, The Macmillan company
Size: 1932px × 1294px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
