Title: Pepper fertilizer trial
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Permanent Link: http://ufdc.ufl.edu/UF00076398/00001
 Material Information
Title: Pepper fertilizer trial
Physical Description: Book
Creator: Ozaki, H. Y.
Publisher: Plantation Field Laboratory, University of Florida
 Record Information
Bibliographic ID: UF00076398
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 123906011

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May, 1965


PEPPER FERTILIZER TRIAL-/
H. Y. Ozaki2/

EXPERIMENT: Black polyethylene plastic soil covering for pepper- 1139 -1964-1

OBJECT: To compare the effect of applying 2 rates of fertilizer with 2
methods.

SUMMARY: Covering high rates of fertilizer at planting time resulted in
yields almost equal to yields from uncovered plots fertilized at frequent in-
tervals. Fertilizing with 312 pounds N and 260 pounds K (312 K20)per acre resulted
in higher yields than fertilizing with 162 pounds N and 130 pounds K (162 K 0).

LOCATION: Plantatihn Field Laboratory, Field 2.

SOIL TYPE: Pompano fine sand, 1--2 foot water table.

TREATMENTS: All plots received an initial fertilization of 600 pounds of
6-4.4-5-0.06B (N-P-K B) (6-10-6-0.2B203(N-P205 K20) in four bands on the sur-
face of the bed, approximately 3 inches on each side of the seed row, and with
100 pounds of the complete fertilizer banded over the seed row.

1. Check, 312 pounds of N and 260 pounds of K (312 K20) per acre, without
plastic.
a) 600 pounds of 6-4.4-5 (6-10-6) at 2 weeks, in addition to
planting fertilizer

1) In 4 bands, 3 inches on each side of the row.
b) and monthly applications of 10-0-8.3 (10-0-10)
1 i} weekly until January at 300 pounds per acre
/ 2) hly after January, 600 pounds per acre
c) rtilizer lied on surface
S\ ) PFer ilizer application moved 1-2 inches further from
So/wrow than previous application.
)', .Top of d ertilized every other time after first month.
1) Both sides and outside of rows alternately fertilized.

2. Check, 162 pounds of N and 130 pounds of K (162 K20), without plastic
a) 600 pounds of 6-4.4-5 (6-10-6) at 4 weeks, in addition to
planting fertilizer.
b) Monthly or bimonthly application of 10-0-8.3 (10-0-10)
1) Monthly until January, at 300 pound application
2) Bimonthly after January, at 600 pound application
c) Fertilizer applied on surface
1) Fertilizer application moved 1-2 inches further from
row than previous application.
d) Top of bed fertilized every other time
1) Both sides and outside of rows alternately fertilized.
I/ This presentation of the results from the study of methods of fertilizer ap-
plication was prepared for research and industry. Results herein neither
constitute nor imply recommendation of any particular method of fertilization.
2/ Assistant Horticulturist, Plantation Field Laboratory, University of Florida


Plantation Field Laboratory Mimeo Report, PFL 65-5


? r -i








3. Black polyethylene mulch, 312 pounds of N and 260 pounds of K (312 K)
a) All applied at planting
b) 1200 pounds of 6"4.4-5 (6-10-6) in four bands
1) Two nozzles in center of bed
a-a. 600 pounds between 2 rows
2) Two nozzles on shoulder
3) 600 at planting, another 600 extra
c) 2400 pounds of 10-0-8.3 (10-0-10).on shoulder and in trench cut
for plastics.
1) 4 times with distributuen with 6 gear and 8 gear
4. Black polyethylene mulch, 160 pounds of N and 130 pounds of K
a) All applied at planting
b) 1200 pounds of 6-4.4-6 (6-10-6) in four bands
1) Two nozzles in center of bed.
a-a. 600 pounds between 2 rows
2) Two nozzles on shoulder
c) 900 pounds of.10-0-8.3 (10-0-10) on shoulders and in trenches
cut for plastics.
1) 1 time with 6 gear and 1 time with 12 gear
5. Black .polyethylene, 312 pounds of N and 260 pounds of K.
a) 1200 pounds of 6-4.4-5 (6-10.-6)
1) Between 2 rows
2) 4 nozzles between the 2 rows for second application
a-a. 900 pounds between 2 rows
h) 2400 pounds of 10-0-8.3 (10-0-10) -
1) 4 nozzles in trenches and on shoulder
2) 4 600-pound applications
6. Black polyethylene, 160 pounds of N and 130 pounds of K.
a) 1200 pounds of 6-4.4-5 (6-10-6)
1) 4 nozzles betw-.en the 2 rpws on second application
a-a. 900 pounds betwee;a 2 rows
b) 900 pounds of 10-0-8.3 (10-0-10)
1) 4 nozzles in trenches and on shoulder
2) 1 600-pound application
3). 1 300-pound application
The fertilizer was applied with a 10-inch top delivery Cole distributor,
equipped with 8 gear on 2 foot diameter drive veel.

Fertilizer dust was scattered in air movement over a wide area.

LIME: A total of 1 ton of dolomitic lime was broadcast and disked in in mid-
October.

PLANTING: Each plot, 0.00325 acre, consisted of 2 pepper beds, 12.5 feet long.
Only 0.0026 acre (10 foot sections of each bed) was harvested. Each whole plot
was separated by a rye grass windbreak and-12.5 foot alley.

Two rows f :peppers were sown cn each 68 inch bed in lat1 October, 1963.

Early Calwonder pepper seeds were sown with a Planet Junior planter set at









hole 15 and 3/4 inch depth (5th -otch). Plants were thinned to a nine inch
spacing. Holes were cut in plastics after sowing the seeds.

PESTICIDE TREATMENTS: Copper was sprayed at weekly intervals. Either maneb,
zineb, or fermate were sprayed 3-4 days after copper sprays. DDT and diazinon
were applied alternately at 3-4 day intervals.

EXPERIMENTAL DESIGN: A randomized complete block with 6 replications.

LOG: Limed: 10/14/63
Seeded: 10/21/63 (Early Calwonder 17636, Asgrow Seed Co.)
Fertilized: N-P-K: 10/21, (10/30 trt. 1, 11/18- trt. 2)
N-K: Plastic treatments: 10/21., Trt. 1: 11/18, 12/24,
1/14/64, 2/13.
Trt. 2: 12/24 (12 gear on 2/13)
Plastic Applied: 10/21/63
Windbreaks sown: 11/5/63.
Thinned: 12/2/63.
Transplanted missing hills: 12/2/63.
Harvests: First: 2/27/64. Last of 5: 5/5/64.

DISCUSSION AND RESULTS: The growing season was variable. Average November
temperatures were warm- the average daily maximum was 790 F. and the minimum
62. But December average temperatures were the lowest on record- 720 maximum
and 500 minimum. No injurious frost occurred during the growing season.

Several heavy rains (over 0.75 inch per 24 hour period) fell during the
season from October, 1963 through April, 1964. A 3.3 inch rain fell on December
31, a 0.77 inch rain on January 13, and a 2.0 inch rain fell on February 5. At
the end of the growing season, 0.91 and 2.59 inches were recorded for April 29
and 30, respectively.

The first harvest was made 129 days after seeding, and the last of 5
harvests was made 68 days later. Table 1 contains the yield data for total
(including culls), U. S. fancy and marketable (U. S. fancy / U. S. #1) grade
pods.

Fertilizer covered with black polyethylene sheets resulted in total, U. S.
fancy, and marketable (U. S. fancy / U. S. #1) yields almost equal in yield to
production from check plots (table 1 ). During the heavy rains of December
and February, the water filled the furrows in some of the lower replications.

The water level was above the level of trench fertilizer placement of the
plastic covered plots in lower replications, especially I, II and III. The fact
that the yields of treatment 3 (plastic covered, high rate of fertilizer) were
higher in 4 out of 6 replications, than the yields of the check plots (fertili-
zed at intervals throughout the growing season)indicates that not -o much of
the fertilizer was leached from the plastic covered plots.

The high fertilizer (312 N and 260 pounds K (312 K20)rate increased yields
over the low (162 N and 130 pounds of K) (162 K20) fertilizer rate. The dif-
ferences for the 2 fertilizer rates were significant for total (including culls),








U. S. fancy, and marketable (U. S. fancy / U. S. #1) pods at the l1 level
(treatments 1 & 3 versus treatments 3 & 4).

The application of 900 pounds of 6-4.4-5 (6-10-6) on top of the bed
between the 2 rows (and of 300 pounds on the outside of the rows (treatments
5 & 6) ,did not significantly affect the yields over the yields from plots
fertilized with 600 pounds between the 2 rows and 600 pounds on the outside
of the 2 rows (treatments 3 & 4 versus 5 & 6).

Nematodes infected plots late in the growing season, resulting in severe
rootknot in almost all plots. The foliage of infected plants turned yellow at
the termination of the experiment. During the winter growing season the plant
foliage was green. Table 1 contains the rating by Dr. Winchester, Everglades
Experiment Station.

This study indicates peppers can be grown with one application of fer-
tilizer covered with plastic. This method could elminiate the necessity of
frequent fertilizer applications on leachable sandy soils.

Table 1. Average pounds of pods per 20 foot bed*, and nematode rating,
1139 I 1964 pepper experiment.

Treatment Total Fancy Marketable Nematode
Mulch, N-K Rate 5 harvests 4 harvests 5 harvests Rating**

1. Check, 300 100.5 25.4 76.3 3.7
2. Check, 150 81.9 17.7 55.6 3.7
3. P.M., 300 99.2 23.6 71.3 4.0
4. P.M., 150 80.2 18.6 53.6 3.7
5. P.M., 300 fert.conc. 98.0 18.5 69.0 4.2
6. P.M., 150 fert.conc. 83.3 17.4 56.6 3.4

*For bushels per acre, multiply plot yield by 12.8.
**0 none
5 severe rootknot




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