Page 6


Table 13.


 pH
 Harvei
 6.24
 5.53
 5.2C


Manganese content of outer rib tissue, parts per million dry weight.
Data are given from unsprayed treatments only.


at
it
r


Summer
Pascal
 4.2
 16.8
 24.6


Utah
52-70
 6.0
 14.9
 28.0


FFVA
2-13
8.0
15.3
20.2


Fla.
683
9.8
22.2
42.4


 Utahs contained more manganese than Summer Pascal, Fla. 683
in manganese than 52-70 or FFVA 2-13.


Table 14.


 pH al
 Harvest
 6.24
 5.53
 5.20


was higher


Boron content of outer rib tissue, parts per million dry weight,
unsprayed treatments only.


t
El


Summer
Pascal
41.0
37.2
43.0


Utah
52-70
38.6
39.8
40.3


FFVA
2-13
34.2
37.6
42.7


Fla.
683
37.7
38.3
43.0


 Summer Pascal contained more boron than the Utahs, Fla. 683 more than
FFVA 2-13.

3. Soil reaction effects on escarole.

 The following data are taken from a factorial pH x P x K experiment with
escarole. Only the pH data are given here. Boron equivalent to 10 lbs. borax
per acre (3.6 lbs. B203) and 30 lbs. manganese sulfate (10 lbs. MnO) per acre
were used uniformly in the fertilizer mix. Each fertilizer and pH plot was
split and five weekly applications of 1.0 lb. MnSO4 (32.5% Mn) in 100 gallons
of water were applied as nutritional sprays on one half of each fertilizer
plot with the following results:


Table 15.


Harvest weights and color ratings of pH and manganese spray treat-
ments on escarole.


Total weight per plot
Check Mn spray
 39 53
 48 56
 54 55


Color rating at harvest*
Check Mn spray
1.9 3.2
3.3 3.3
3.4 3.4


 *1 = poor to 4 = excellent

 An outer leaf for chemical analysis was taken from each of several plants
after trimming to a marketable plant. Data below are from non-sprayed plots
only.

Table 16. Chemical analysis of outer leaf tissue.


pH at
Harvest
 6.63
 6.14
 5.64


% P
.41
.41
.41


% Ca
1.48
1.44
1.39


ppm Mn
 18
 18
 37


ppm B
51
49
52


pH at
Harvest
 6.63
 6.14
 5.64