WEATHER AND CRANBERRY PRODUCTION 



23 



Table 6. — Weather Chiefly Affecting the Keeping of Massachusetts 



Cranberries. 

 (For use with Table 18 in making crop appraisals.) 



lAt Boston (from Table 10) 

 2At Middleboro (from Table 11). 



'Averages of precipitation at Middleboro, Plymouth, and Hyannis (from Table 12). 

 <Most of these appraisals are from page 73 of Bulletin 402, mentioned above. Those marked * 

 are made from data of November growers' reports, provided by C. D. Stevens. 

 ^Probably unsound appraisals. 



March temperature is included in Table 6 for handy use and as perhaps the 

 most significant element in the weather complex elaborated in Table 18. The 

 evident remarkable correlations of this complex with both the size and keeping 

 quality of cranberries may be related to oxygen deficiency in the bog waters in 

 March, but this possibility has not yet been explored. The influence of precipi- 

 tation may be through an effect on the ionization of these waters. 



