ii8 



Journal of Agricultural Research 



Vol. XII, No. 3 



on September i6. The crop was uniform and quite heavy, making it 

 possible to secure approximately 2 bushels from each tree for storage. 

 The fruit was placed in cellar storage in open packages. Hygrother- 

 mograph records showed that from September 19 to October 18 the 

 temperature of the cellar averaged 55° F., and the relative humidity 

 approximately 55 per cent; that from October 18 to November 9 the 

 average temperature was 48° F. and the average relative humidity 68 

 per cent, and that from November 9 to March 20 the temperature was 

 fairly constant at 35° F., the relative humidity averaging 80 per cent. 

 Notes w&re taken on September 19, when the fruit was picked, and on 

 October 18, November 9, and March 20. At the time of the last note 

 taking the apples were cut open and a record made of the internal brown- 

 ing as well as the bitter-pit spots. The vascular bundles of about half 

 the pitted apples were browned, but the apples that showed no external 



Pea CENtoFBirreR-P/r 

 o s 10 IS \?o 2s 30 35 ^o 



MIIIIIIIHA pea CENTOF BITT£fi-PlT/>T PICK/NG TIME. 



^^BB •°^* CCNTOF BITT£Q-PIT DEvetOPED BETWEEN SEPT. 1641^0 OCT 10. 

 \ I PEO CENT OF BlTT£!i-Pir DEVEL OPED BETWEEN OCT. IB AND N0\/. 9. 



I I PEQ CENT OF BITTE/I'PIT OEVELOPEO BET»V££NN0V.9ANDf1AOC/iS0. 



Fig. s.— Diagram showing the amount of bitter-pit on Grimes apples in 1916. The diagonally shaded 

 portions of the bars indicate the percentage of apples having bitter-pit at picking time; the solid por- 

 tions, the percentage developed between September 19 and October 18; the horizontally shaded portions, 

 the amount developed between October 18 and November 9; the white portions, the amotmt developed 

 between November 9 and March 20. See figure 4 for soil-moisture conditions. 



evidence of bitter-pit were free from internal browning. The bitter-pit 

 results are given in Table IV. The percentages in the first and last 

 columns are based on the total number of apples, those in the other col- 

 umns on the number of sound apples at the previous note taking. 



Table IV. — Percentage of bitter-pit on Grimes apples 



