Mineral Nutrition Status of Valencia Orange


 Internal Fruit Quality.-Internal fruit quality was measured
 by determining percent juice by weight, soluble solids, titratable
 acid, ratio of soluble solids to acidity and vitamin C. The aver-
 ages and the distribution of groves based on these characteristics
 are presented in Table 9.

 TABLE 9.-PERCENT DISTRIBUTION OF GROVES BASED ON
 INTERNAL FRUIT QUALITY.

 Range Grove Distribution

 Percent Percent
 Juice by weight 42.9-48.0 3.8
 48.1-51.0 28.1
 51.1--54.0 41.2
 54.1-57.0 20.6
 57.1-60.8 6.3
 Mean 52.5+- 2.87

 Brix

 Soluble solids 9.70-10.50 11.2
 10.51 11.00 15.5
 11.01-11.50 23.0
 11.51-12.00 27.3
 12.01-13.30 23.0
 Mean 11.50- 0.72



Titratable acid 0.73- 0.90 10.5
 0.91- 1.00 16.0
 1.01- 1.10 30.2
 1.11- 1.20 27.2
 1.21- 1.51 16.1
 Mean 1.09- 0.13

 Brix/Acid

Ratio 8.71-10.00 26.1
 10.01 11.00 41.0
 11.01 12.00 19.9
 12.01 13.00 9.9
 13.01-14.38 3.1
 Mean 10.71+ 1.09

 mg./100 ml. Juice

Vitamin C 35.5-40.0 6.2
 40.1-45.0 17.4
 45.1-50.0 38.5
 50.1 55.0 27.3
 55.1-60.0 10.6
 Mean 48.7- 5.11