Florida Agricultural Experiment Stations


 TABLE 15.-THE INFLUENCE OF NITROGEN APPLIED ON RIND TEXTURE.

 Nitrogen Range Grove Smooth Fruit

 Lbs./A ................ ........... ............... No. Percent
 67-150 .............. ........ .................. 7 49
151-200 .... ..... ... .............. 29 35
201-250 ......... ........ .. ... ........... 29 30
251-300 ............ .... ... .............. 14 24
301-350 ....... ....... .... ......... .... 13 16
351-448 ......... ......... .................. 5 14
Statistical significance ......- .. '**


 No significant relation in fruit quality was observed when
potassium rates alone were considered. However, when po-
tassium was considered together with nitrogen, highly signifi-
cant differences were found in fruit size, juice acidity and Brix/
acid ratio of the juice. Fruit size increased as the nitrogen-
potassium ratio in fertilizer became smaller, the increase being
approximately one commercial packinghouse size over the entire
nitrogen-potassium range (sizes 200 to 176). The titratable acid
was lowest at the widest nitrogen-potassium ratio, which re-

 TABLE 16.-THE INFLUENCE OF NITROGEN AND POTASSIUM RATIO
 IN THE FERTILIZER ON FRUIT QUALITY.

 Nitrogen-Potassium Rates Size Acid I Ratio
 Ratio N K..O Grove

 N/KO2 Pounds/Acre No. Inches I Brix/Acid
 1:11 ...... 164 206 22 3.03 1.05 I 10.9
 1:1 ........... 230 229 41 3.01 1.10 10.6
 1: % ...... 234 210 18 2.97 1.12 i 10.3
 1: ...... 229 168 44 2.95 1.12 10.3
 1:% ... 262 156 18 2.93 1.10 10.7
 1:% .. ... 282 126 16 2.92 0.99 11.6


 Statistical significance ...-.... ..-............ ** *:;