Page 3

a. Seedbed:2-

Table 3. Effects of pH adjustment on growth and Mn content of a golden celery
 type.


 Ave.
 pH
 6.33
 5.73
 5.20
 4.87
 4.70

b. Field experiment:3/


Height
in inches

 4.3
 8.3
 9.3
 7.2
 5.2


Soil pH and average
manganese content
of petiole tissue
pH Mn ppm
6.47 Trace
6.13 4.1
5.90 9.2
5.60 8.8


Table 4. Effects of pH adjustment on yield of a golden type celery and soil
 phosphorus availability.


H20 Soluble
P, lbs./A.
 17


pH_
6.13
5.72
5.41


2. Recent Experiments


 Yield
Crates/A.
 765
 890
 907


 Following a change in celery types a series of experiments were conducted
with the following typical results:

a. Seedbed:

Table 5. Effects of pH adjustment on seedling growth of a Sunmer Pascal and
 Utah 52-70 celery.


1. P. P. V. Summer
 Pascal
 Yield, Grams
 pH Sq. Foot
 6.37 426
 6.08 460
5.71 454
5.33 438


2. Utah 52-70


pH
6.11
5.89
5.54
5.26


Yield, Grams
Sq. Foot
 354
 348
 348
 387


b. Field experiments:

1. The following data with Utah 52-70 is typical of data obtained from two
such experiments. Yield data are in pounds for 30-foot single row plots.
Supplementary boron and manganese were sprayed as treatment variables to

2/
- Forsee, W. T., Jr. 1949. The effect of soil pH upon the growth of celery
 seedlings on the peat and muck soils of the Everglades. Proc. Fla. State
 Hort. Soc. 62:143-146.

 SForsee, W. T., Jr. 1950. The place of soil and tissue testing in eval-
 uating fertility levels under Everglades conditions. Soil Sci. Soc. Amer.
 Proc. 15:297-299.