. Economic aspects of the bee industry. Bees; Bee culture. 52 University of California—Experiment Station variations in rainfall itself. Moreover, distribution as well as amount of rainfall is of importance. Observations over a three-year period at the Texas Agricultural Ex- periment Station30 on humidity, rainfall, wind movement, light condi- tions, and barometric pressure indicated that there was no correlation Average Annual Precipitation and Calculated Annual Yield of Honey per Colony, California, 1900-1932. PROOUCTION+48 49 S3 S3 4S 65 63 71 68 67 65 59 59 63 77 63 75 55 63 71 85 54 68 41
. Economic aspects of the bee industry. Bees; Bee culture. 52 University of California—Experiment Station variations in rainfall itself. Moreover, distribution as well as amount of rainfall is of importance. Observations over a three-year period at the Texas Agricultural Ex- periment Station30 on humidity, rainfall, wind movement, light condi- tions, and barometric pressure indicated that there was no correlation Average Annual Precipitation and Calculated Annual Yield of Honey per Colony, California, 1900-1932. PROOUCTION+48 49 S3 S3 4S 65 63 71 68 67 65 59 59 63 77 63 75 55 63 71 85 54 68 41 49 54 64 48 47 47 S3 39 1900 '01 '02 '03 '04 '05 '06 '07 '08 '09 '10 'll '12 '13 14 '15 '16 '17 '18 19 '20 '21 '22 '23 '24 '25 '26 '27 '28 '29 '30 '31 Fig. 12.—It is highly probable that there are many factors in addition to the annual amount of precipitation which influence the per-colony yield. The above indicates that since 1915 the calculated per-colony yield has been downward. Precipitation in the state has shown a distinct decline. (Data from table 14 and U. S. Dept. Agr. Weather Bur. Comparative annual data for the state. Climato- logical data. California Section 35 [13]. 1931.) between these on a yearly basis and the behavior of bees. Their investi- gators were of the opinion, however, that "accumulated rainfall and temperature as well as the time of occurrence of maximums, had much more to do with the actions of bees and plants than the general average of weather ; Aside from climatic conditions, it may be noted that changes in natural vegetation, the cultivated area, and the nature of cultivated crops undoubtedly make for variations in per-colony production. Over- stocking in some sections has brought decreased yields at times and differences in per-colony production between different apiaries may result from fires, spray poisoning, and numerous other factors. It is a safe conclusion that over a period of years high prices, by encouraging goo
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