24 



MASS. EXPERIMENT STATION BULLETIN 433 



Table 7, — Temperature and Cranberry Production in Massachusetts. 



Potential 



Production, 



Crop Departure 



Year from Average' 



(Percent) March 



Mean Temperatures, ^ Year of Crop (Degrees F.) 



July 



Sept. 

 and Oct. 



Departure from Average 

 Degrees F. 



March 



July 



Sept. 

 and Oct. 



1888 +0.2 31.1 65.5 51.9 -4.3 -3.9 -4.1 



1889 -25.7 36.3 68.5 55.2 +0.9 -0.9 -0.8 



1890 -6.9 34.0 68.0 54.7 -1.4 -1.4 -1.3 



1891 +15.6 33.6 65.7 56.8 -1.8 -3.7 +0.8 



1892 +10.7 31.5 69.3 53.8 -3.9 -0.1 -2.2 



1893 +21.9 32.8 68.6 54.3 -2.6 -0.8 -1.7 



1894 -24.7 39.6 71.5 57.6 +4.2 +2.1 +1.6 



1895 +19.5 33.6 66.6 54.5 -1.8 -2.8 -1.5 



1896 +9.7 30.4 70.6 54.0 -5.0 +1.2 -2.0 



1897 -31.7 35.5 70.8 55.3 +0.1 +1.4 -0.7 



1898 -30.4 40.0 70.1 58.0 +4.6 +0.7 +2.0 



1899 -6.3 34.0 69.4 55.7 -1.4 0.0 -0.3 



1900 -8.3 32.4 70.7 58.8 -3.0 +1.3 +2.8 



1901 +22.1 35.3 71.7 56.7 -0.1 +2.3 +0.7 



1902 -15.0 41.1 66.4 56.5 +5.7 -3.0 +0.5 



1903 +11.2 42.5 69.2 55.4 +7.1 -0.2 -0.6 



1904 +51.9 34.0 69.1 54.0 -1.4 -0.3 -2.0 



1905 -19.5 35.5 70.6 55.2 +0.1 +1.2 -0.8 



1906 -3^0 31.0 69.3 56.5 -4.4 -0.1 +0.5 



1907 -12.2 36.4 69.9 55.3 +1.0 +0.5 -0.7 



1908 -30.1 37.3 72.1 57.5 +1.9 +2.7 +1.5 



1909 +11.4 35.5 67.1 53.8 +0.1 -2.3 -2.2 



1910 +30.0 39.0 70.6 56.0 +3.6 +1.2 0.0 



1911 -15.9 33.3 72.4 54.8 -2.1 +3.0 -1.2 



1912 +11.0 34.3 70.0 56.2 -1.1 +0.6 +0.2 



1 913 - 5.1 40.9 70.2 57.4 +5.5 +0.8 +1.4 



1914 +11.9 34.2 66.2 56.2 -1.2 -3.2 +0.2 



1915 +2.6 32.8 67.8 57.9 -2.6 -1.6 +1.9 



1916 -11.6 27.2 68.9 56.0 -8.2 -0.5 0.0 



1917 -1.0 33.6 70.5 52.2 -1.8 +1.1 -3.8 



1918 +41.3 33.9 68.7 55.0 -1.5 -0.7 -1.0 



1919 -3.1 38.1 70.3 56.8 +2.7 +0.9 +0.8 



1920 -25.0 36.1 68.2 59.1 +0.7 -1.2 +3.1 



1921 -34.4 42.7 71.9 58.5 +7.3 +2.5 +2.5 



1922 +0.4 37.0 70.1* 58.4 +1.6 +0.7 +2.4 



1923 +17.5 33.8* 66.2 56.5 -1.6 -3.2 +0.5 



1924 +7.5 34.1. 69.2 54.2 -1.3 -0.2 -1.8 



1925 +21.8 39.4 68.5 53.6 +4.0 -0.9 -2.4 



1926 +3.7 31.6 67.5 54.4 -3.8 -1.9 -1.6 



1927 -10.4 38.6 69.3 58.0 +3.2 -0.1 +2.0 



1928 -20.3 35.3 71.0 56.0 -0.1 +1.6 0.0 



1929 +4.1 39.5 68.8 56.0 +4.1 -0.6 0.0 



1930 -4.0 34.8 69.4 56.5 -0.6 0.0 +0.5 



1931 +9.2 36.3 71.4 59.1 +0.9 +2.0 +3.1 



1932 +2.2 33.2 68.1 57.3 -2.2 -1.3 +1.3 



1933 +18.4 34.5 68.3 56.5 -0.9 -1.1 +0.5 



1934 -27.3 33.9 71.5 56.7 -1.5 +2.0 " +0.7 



1935 -5.3 38.3 72.0 55.4 +2.9 +2.6 -0.6 



1936 -8.1 43.2 68.8 57.0 +7.8 -0.6 +1.0 



1937 +24.8 32.6 70.7 55.6 -2.8 +1.3 -0.4 



1938 -21.7 38.2 71.5 57.2 +2.8 +2.1 +1.2 



1939 +4.9 33.1 69.6 56.7 -2.3 +0.2 +0.7 



1940 -10.7 31.6 69.9 53.9 -3.8 +0.5 -2.1 



Average 35.4 69.4 56.0 



'From Table 1. 

 'At Middleboro (Table 11). 



♦Average of maximum temperatures at Brockton and minimum temperatures at Middleboro. 

 The above table gives the following correlation coefficients between mean temperatures and 

 cranberry production: 



March -0.257 ± 0.086 



July -0.3S9±0.08 



September and October -0.353 + 0.081 



