TY - JOUR
AU - Salmon, S. C.
AB - Published January, 1917 THE RELATION OF WINTER TEMPERATURE TO THE DISTRI­ BUTION OF WINTER AND SPRING GRAINS IN ·THE UNITED STATES. S. c. SALMON. The successful culture of winter grains in northern latitudes de­ pends largely on winter temperature .. As, however, many other fac­ tors may determine whether a farmer sows winter or spring grain where both may be successfully grown, the distribution of winter cereals in relation to temperature is of general interest. The census reports and weather bureau records of the United States and Canada afford excellent material for studying this relation. Such a study was begun during the winter of 1913-14 and has since been continued at intervals. The maps (figs. 2 and 3) show the results obtained with winter and spring wheat. The distribution in the United States was plotted by counties on the basis of the census returns for 1909. The distribution in Canada is based largely on the cereal maps pub­ lished by the Canadian Department of the Interior in 1909. The acreage for Canada is for 1911. The isotherms connect points of equal daily minimum temperature for January and February, the coldest months of the year. The isotherm of 10° F. 
TI - The Relation of Winter Temperature to the Distribution of Winter and Spring Grains in the United States1
JF - Agronomy Journal
DO - 10.2134/agronj1917.00021962000900010003x
DA - 1917-01-01
UR - https://www.deepdyve.com/lp/wiley/the-relation-of-winter-temperature-to-the-distribution-of-winter-and-K0DLJPHARe
SP - 21
EP - 24
VL - 9
IS - 1
DP - DeepDyve
ER -