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 Main
 Background
 Experiment 1
 Experiment 2
 Experiment 3
 Experiment 4
 Experiment 5
 Experiment 6














Group Title: Central Florida Experiment Station mimeo report - Central Florida Research & Education Center ; CFS-71-3
Title: Foliar and soil tests of new micronutrient materials on vegetable and field crops
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 Material Information
Title: Foliar and soil tests of new micronutrient materials on vegetable and field crops
Series Title: Central Florida Experiment Station mimeo report - Central Florida Research & Education Center ; CFS-71-3
Physical Description: Book
Language: English
Creator: Forbes, Richard Brainard
Westgate, P. J.
Affiliation: University of Florida -- Central Florida Experiment Station
Publisher: Central Florida Experiment Station, University of Florida
Publication Date: 1971
 Record Information
Bibliographic ID: UF00075852
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 123227857

Table of Contents
    Main
        Main 1
    Background
        Page 1
    Experiment 1
        Page 2
        Page 3
        Page 4
    Experiment 2
        Page 5
        Page 6
    Experiment 3
        Page 7
        Page 8
    Experiment 4
        Page 9
    Experiment 5
        Page 10
        Page 11
        Page 12
        Page 13
    Experiment 6
        Page 14
        Page 15
        Page 16
Full Text





HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida




F -3

FS 7/-3


CENTRAL FLORIDA E

Sanford,


Mimeo Report CFS71-3


October 13, 1970


Foliar and Soil Tests of New Micronutrient Materials
on Vegetable and Field Crops


R. B. Forbes
Associate Professor (Associate Soils Chemist)



P. J. Westgate
Professor (Horticulturist)



Six field experiments were carried out for the evaluation of newly
developed minor element compounds and, in some areas, to help
determine the cause and best control measures for deficiencies found
in a growing crop in the field. Experiments were as follows:


Experiment 1.



Experiment 2.


Foliar spray trial on turnips on the Station farm
at Zellwood on Everglades mucky peat (Westvaco
Corp. Grant).

A foliar spray trial on oats at the Uniroyal farm,
Sanford (St. Johns find sand).


Experiment 3. Foliar spray trial on sweet corn at Zellwood on
the Dan Stroup farm (Everglades mucky peat).

Experiment 4. Soil applications of citrate, poly-N and EDTA
chelates of zinc, iron and copper for field corn,
Long farm, Zellwood (Allied Chemical Corp.
grant).












S2-


Experiment 5. Soil Treatments with Reax and PC series of minor
element compounds for snap beans and southern
peas, Long farm, Zellwood (Westvaco Corp. grant).
Experiment 6. Foliar spray trial on Sorghum, Station farm,
Zellwood (Westvaco Corp. grant).

Experiment 1
Foliar Spray Trial on Turnips Zellwood

Turnips planted in a marl-muck area were smaller than normal and
showing some chlorosis, indicative of a minor element deficiency, at
the time the foliar sprays were applied March 16, 1970.

The treatments included a dosage series of several new Westvaco
products in comparison to a dosage series of the sulfates and various
combinations as listed below. Plot size was 10 x 3 feet or 0. 0007 acres.
Application rate was 200 gpa or 530 ml/plot. Two replicates were applied.

Results and Discussion

Experiment 1 had to be terminated on April 1, 1970 because of poor
condition of the plants as a result of a disease complex including black
rot, alternaria and mildew. There was no visible response to any of the
treatments. No phytotoxicity from any of the organo-metallic complexes
was observed although some burn was observed at the 2.0 lb. rate of the
sulfates.



* Organo-metallic complexes developed by Westvaco from paper mill
wastes.





-3-


Table 1. Foliar spray treatments for turnips.


Treatment material


:bs/100 galoh


g~ransl I allon


1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.


(table continued


Reax Copper, check
It 11

(f II


It ii

Reax Zinc, check

11 II
It ft


it ft

Reax Manganese, check








Reax Magnesium, check



It If

It II

Reax Iron, check

11 Ir

11 It



PC-208 Iron, check


It It



It I!
11 "t

11 11

11 "1

"


0

0. 50

1.0

2.0

4.0

0

0.50

1.0

2.0

4. 0

0

0.50

1.0

2.0

4.0

0

0.50

1.0

2.0

4.0

0

0.50

1.0

2.0

4.0

0

0.50

1.0

2.0

4.0

on next page)


2.25

4.5

9.0

18



2.25

4.5

9.0

18



2.25

4.5

9.0

18


2.25

4.5

9.0

18



2.25

4.5

9.0

18


2.25

4.5

9.0

18


I ~ _ _~__


..ras/alon








31.
32


-4-

Experiment 1, Treatments cont'd.

PC-198 Iron, check 0
i, 1- -


33. "

34. "

35. "

36. Cc

37.

38.

39.

40. Ir
41.

42.

43. Mi

44.

45.

46. Zi:

47.

48.


pper sulfate, check
I" I"


on sulfate
S l


manganese sulfate

it 1a

nc sulfate


11


U. u0

1.0

2.0
4.0

0

i 50


2 0

0.50

1.0

2.0

0.50

1.0

2.0

0.50

1.0

2.0


49. Check 0

50. Reax Zinc + Reax Iron 2. 0 each

51. Reax Zinc + Reax Manganese 2.0 each

52. Reax Iron + Reax Manganese 2.0 each

53. Reax Iron + Reax Zinc + Reax
Manganese 2.0 each

54. Reax Zinc, 2.0 lb + PC-208 Iron 4. 8 Ib

55. PC-208 Iron, 4. 8 + Reax
Manganese 2.0

56. PC-208 Iron, 4.8 + Reax
Reax Zinc 2. 0 + Reax Mn 2. 0
57. Zinc sulfate 0. 67 + Iron sulfate 1.14

58. 0. 67 + Manganese sulfate 0. 86

59. Iron sulfate 1. 14 + Manganese sulfate 0. 86

60. 1.14 + Zinc sulfate 0.67 + Manganese sulfate


- ---


---

2.25

4.5

9.0

18


2.25

4.5

9.0

2.25
4.5

9.0

2.25

4.5

9.0

2.25

4.5

9.0


9.0 each
9.0 each

9.0 each


9.0 each

9 + 21.6


21.6 + 9.0


21.6 + 9.0 + 9.0

3 + 5.13

3 + 3.87

5.13 + 3.87

0.86
5.13 + 3.87









5.-

Experiment 2
Foliar Trial With Oats at Uniroyal Farm, Sanford

On March 17, 1970, treatments 22 through 60, omitting 36-39, using
the same solutions prepared for Experiment 1 were applied to chlorotic
oats about 8 inches tall on the Uniroyal Farm with the cooperation of the
supervisor of the Uniroyal facility, Mr, Dave Benson. Spray was applied
at 200 gpa on single row 30" wide plots 10' long.

Results and Discussion

Response to iron was evident within a few days. Plots were rated on
March 27, 1970. Results and treatments are given in the following table.
No phytotoxicity was evident. Treatments and results are shown in Table 2.

The main response was from iron compounds. The best ratings for
improved color and growth came from Reax Iron, iron sulfate, and the
mixture of iron, zinc and manganese sulfates.

Of the new experimental organo-metallic complexes the Reax iron
was the most effective. A moderate response was gained from PC-208
Iron, but none from PC-198 Iron.


The 0. 5 lb rate proved too low to be effective in all cases.





-6 -


Table 2. Treatments and growth ratings, foliar spray trial with oats,
Uniroyal Farm, Sanford.


..Rate Growth Rating
Treatment lb/i00 gal 0=no impr. 5=normal
e green


22.
23.
24.
25.
26.


Reax Iron

II 11


Check, no treatment


PC-208 Iron
11 It 11
ft ft It
"! !" "


31. Check, no treatment

32. PC-198 Iron
33. "
34. "
35. "


40.
41
42.

43.
44.
45.

46.
47.
48.
49.


Iron sulfate
f11 I
It if

Manganese sulfate
ft ft


Zinc sulfate
Check, Ino treatmentI
If fl
Check, no treatment


0. j
0.5
1.0
2,0
4.0


0.5
1.0
2.0
4.0


0.5
1.0
2.0
4.0

0.50
1.0
2.0

0.50
1.0
2.0

0.50
1.0
2.0


50. Reax Zinc 2. 0 + Reax Iron 2.0
51. 2.0 + Reax Manganese 2.0

52. Reax Iron 2.0 + Reax Manganese 2.0
53. 2.0 + Reax Zinc 2.0 Reax Manganese 2.0

54. Reax Zinc 2.0 + PC-208 Iron 4. 8

55. PC-208 Iron 4. 8 + Reax Manganese 2.0
56. 4. 8 + 2.0 +


57.
58.
59.
60.


Reax Zinc 2. 0
Zinc sulfate 0. 67 + Iron sulfate 1.14
" 0. 67 + Manganese sulfate 0. 86
Iron sulfate 1.14 + 0.86
1.14+ 0.86 +


Zinc sulfate 0.67 4









-7-


Experiment 3
Foliar Spray Trial on Sweet Corn, Stroup Farm, Zellwood

Sweet corn, about 3 feet high and chlorotic prior to tasselling on the
Dan Stroup Farm at Zellwood was subject to a foliar spray, minor element
experiment to: a. determine the deficiency which was causing the chlorosis,
and b. to test the effectiveness of a number of the newer micronutrient
supplying materials and experimental compounds.

Plot size was 10 x 3 feet or 0. 0007 acrbs. Application rate was 300
gpa or 795 ml per plot. Two replicates were used, one in each of two
fields on the west end of the Stroup Farm. Treatments were applied on
May 7, 1970 and ratings were made on May 14. Untreated checks were
left adjacent to each plot.

The soil in the experimental areas was Everglades mucky peat in a
fairly high lime area and of generally high fertility as shown here:

Available nutrients lb/acre
Sampled area pH Conductivity N03 CaO MgO P205 K20

1. North field 7.0 75 H 19098 2437 432 588
2. South field 6.7 70 H 16014 2437 300 458


The treatments and growth ratings are shown in Table 3.

Results and Discussion

Response shown by the corn was mainly to manganese compounds with
only very slight, if any, response to other elements. Some leaf burn or
injury was noted from copper and from the Multiplex Corn mixture. All
of the manganese formulations gave improvement in the corn. Interestingly
enough, a noticeable improvement was given even by the two lowest rates
used in the dosage series for Reax Manganese. Only one pound gave nearly
as good growth as two pounds of manganese sulfate. No injury was produced
by the higher rates,





-8-

Table 3. Foliar spray treatments and growth ratings, sweet corn,
Stroup Farm, Zellwood, 1970.


Rate Growth Rating 1/
Treatment lb/100 gal North field South field


Iron sulfate
Zinc "
Copper
Manganese sulfate
Borax


6. Mixture: Zinc, iron, and
Manganese sulfates 2
7. Sunniland mixture,
Chase & Co. 3 4
8. Multiplex corn mixture -
(liquid) 38

3/
9. Silviplex Manganese -
(liquid) 38
10. Reax Copper, Westvaco 2
11. Reax Zinc, 2
12. Reax Iron, 2


13.
14.
15.
16.
17.

18.
19.
20.
21.
22.


Reax Manganese, We
Il It
if it


sty
II
11
i"


II II It


PC-208 Iron, Westvaco
PC-198 Iron, "
PC-189 Manganese, "
PC-190 "
Rayplex Manganese,
Rayonie r


2 lb,
2
1
2


1
1
1
4.5
0


0

2/
0
4.5
0


4.8

4.2


lb. each


ml/ gal


ml/gal
lb/100


raco 0.5
1.0
2.0
4.0
8.0

2.0
2.0
2.0
2.0

2.0


23. Key El Manganese, Traylor
(Kaiser) 2.0
24. NTA Manganese, Hampshire 2. 0
25. Nu-Manese, Tenn. Corp. 2.0
26. Nu-M, 2.0
27. Key-El mixture, Traylor
(Kaiser) liquid 19 ml/gal


42/



4.5
1
1
1

3
4
4
4.5
4.5


4.2 /


3
4
4
4.5
4. 5


3.5


4
4
3
3.5


4
4
3.5
3

3.8


1/ Rating: 0=no improvement over untreated checks;
5=normal green color and growth.
2/ Moderate leaf injury.
3/ Berkshire chemicals.





- 9 -


Experiment 4
Soil Applications of Citrate, Poly-N and EDTA Compounds
for Field Corn, Lohg Farm, Zellwood, 1970 1/

Treatments of zinc, iron and copper listed below, were made up
in 10-4-8 fertilizer for each individual plot and broadcast as pre-plant,
soil applications, and then cultivated into the soil. Plot size was 9 x 22
feet (0. 0046 acre) and included three 36 inch rows of corn. Four rep-
licates were used in a randomized block design. Florida 200 A field
corn was planted on April 9, 1970 after the treatments had been applied
(replicate A was applied April 8 and B, C, D were applied April 9.)
Diazinon granules were applied at planting time for wireworm control.
The corn came up to a heavy stand, approximately 22, 000 plants per
acre and grew well until, during the milk stage in late June this area
was hit by a severe wind and rain storm with winds reaching 70 mph.
Damage to the corn was almost total with severe lodging and many
stalks broken off so ears did not develop.

No yield data was possible, but leaf samples were taken from each
plot as well as soil samples. It is hoped that the leaf analyses (not yet
completed) will show effects of the treatments on the uptake of zinc,
iron and copper and give some idea of the relative availability of these
elements to the plant. However, no visible results of the treatments
could be noted at the time of sampling, shortly after the wind damage
occurred.

Table 4. Treatments for field corn plots, Allied Chemical Corp, Field
Test, Long Farm, Zellwood, 1970.

Field No. Treatment material and rate/A.

1 8 lbs/ Zn from Citrate in 10-4-8 @ 1500 lb. /A.
2 4 11 I" "
3 10 Fe "
4 4" "
5 4 Fe-EDTA "
6 4 Zn Zn-EDTA "
7 4 Cu Citrate
8 4 Cu-EDTA "
9 8 Zn dry mix "
10 check, no treatment

Applied April 8-9, 1970: Leaf samples taken June 30, 1970.
Soil analyses from samples taken before planting and m July at
termination of the experiment reflected high pH levels, in the 7 5-7. 7
range and correspondingly high levels of calcium and magnesium.
Available P205 was in the range of 200-300 pounds P205 per acre (high)
and available KI20 was in the range of 350-450 pounds per acre, also high.


I/ Aided by grant from Allied Chemical Corporation.






10 -
Experiment 5
Soil Treatments with Reax and PC Compounds for
Snap Beans and Southern Peas, Long Farm, Zellwood, 1970.
(Westvaco Corp. Grant)

A dosage series including seven new organo-metallic complexes
and sulfates of five different elements was applied as soil treatments
for snap beans and black eye peas. The soil was a high pH, high lime,
Everglades mucky peat on the Long Farm at Zellwoods A solution
or suspension of each material was made up in water and the material
then sprayed in narrow bands on both sides of the rowi The material
was then cultivated into the soil. Plants were about 2 weeks old at
the time of treatment. Two replicates were put in for each crop. Plot
size was 20 feet by 3 feet or 0. 0013 acres.

The treatments are described in Table 5, and plant yields are given
in Table 6. Soil analyses are given in Table 7.

Results and Discussion

Foliage of both beans and peas became chlorotic soon after the
plants became established. None of the treatments gave any visual
effects, improvement in color, size or vigor of plants.

Beans were badly effected by root-knot and disease before harvest,
which made for great variability in plant yields. Pea yields also do
not show any consistent pattern of response.

Leaf samples were taken, but analyses are not yet completed.
These may show some differences in nutrient uptake,







- 11 -


Table 5. Soil treatments applied to snap beans and black-eye peas,
Long Farm, Zellwood, 1970.


atment


Rate, lb./A


Check, no treatment
Reax Copper 14
i" 24
44


Reax Zinc
it ti


20
40
80

20
40
80


Reax Manganese
1t if


Reax Magnesium
It ti


Reax Iron
It i1


PC-208 Iron
it Ii ti


It It


PC-198 Iron

1i It ii


23. Copper sulfate

24. Zinc sulfate

25. Manganese sulfate

26. Magnesium sulfate

27. Iron sulfate:


19.2 (Equiv. to Cu in 80 lbs Reax Copper)

42.4 (Equiv. to Zn in 80 lbs Reax Zinc)

38.9 (Equiv. to Mn in 80 lbs Reax
Manganese)
44.4 (Equiv. to Mg in 80 lbs Reax
Magnesium)
49 (Equiv. to Fe in 80 lbs Reax Iron)


Treatments applied as follows:
Beans, replicate A
I" "i B
Peas, A
B


Tre

1.
2.
3.
4.


14.
15.
16.

17.
18.
19.

20.
21.
22.


5/28/70
6/2/70
6/2/70
6/4/70









12 -
Table 6. Yields of beans and black-eye peas, Long farm.


oean plants, IDIplot
Rep. All Ren. B


7. 2
9.0
5.8
5.9

3. 52
8.0
8.2


Check
Reax Cu
I, Ii



Reax Zn

1t 11

Reax Mn
11 ,
It It


Reax Mg
11 If
I! II


Reax Fe

It Ii


PC-208
I 11
It II


PC-198
Ii It
11 "1
11 "


7. 82
5. 2
poor stand


8.
9.
10.

11.
12.
13.

14.
15.
16.

17.
18.
19.

20.
21.
22.

23.
24.
25.
26.
27.


TI i. I -


Treatment No.


6. 5
7.0
9.3

8.0
7.5
5.9

6.6
6. 5
9.0


Copper Sulfate
Zinc Sulfate
Manganese Sulfate
Magnesium Sulfate
Iron Sulfate

Extra check plot
If I1 11


P ea plants lb/plot
Rep. A Rep. B

6.8 8.5
5.9 7.8
5.2 10.8
8.6 10.0


6.2
9.3
8.4

8.5
6.1
8.3

8.6
7.9
7.7

8.0
9.0
8.0

6. 9
10.5
7.1

7.7
8.4
8.1

10.5
8. 2
6. 1
8.1
7.4


6.0
9.1


8.0
9.8
9.2


6.0
4.7
6.5

8.3
5.8
7.0

8.0
6.9
9.2

6.3
6.4
7.0

5.0
6.0
5.9

7.5
7.0
8.5
10.5
11.0


7.4
7.0


6.7
8.0


Average for checks 7.5 lb/plot (peas).


6.2
7. 7
6. 2-

5. 631
5. 3
10.3
9.5
10.2


1/ Rep. A too badly damaged by rot and root-knot to be harvested.


___


Peas Avg. wt.
lbs/plot

7.6
6.8
8.0
9.3

7.1
9.6
8.8

7.2
5.4
7.4

8.4
6.8
7.4

8.0
8.0
8.6

6.6
8.4
7.0

6.4
7.2
7.0

9.0
7.6
7.3
9.3
9. 2


21 Plants affected by root-knot.












13 -
Table 7. Soil analysis, minor element
Zellwood.


soil treatment plots, Long Farm,


Solubridge Available nutrients lbs. /acre
Sample pH reading NO CaO Mg0 P205 K20


Beans, before treatment 5-28-70


1. Rep. A
2. Rep. B


7.2
6.9


95
120


VH 36460
VH 16300


Peas, before treatment 6-4-70


Rep. A.
Rep. B


7.4
7.3


Peas, at harvest 7-15-70


ML 46030 3480
ML 23120 2719


200
146


410
299


ML 49520 3480 200 472
ML 13850 2255 220 396


3480
2056


220
300


703
830


50650
24415


Rep. A
Rep. B


2460
2240


7.5
7.5


200
210


730
765


Beans


Rep. A
Rep. B


7.6
7.3


_~ __












- 14 -


Experiment 6
Foliar Spray Trial, Sorghum, Zellwood, Fla. 1970


A dosage series of minor element conipounds was applied in a
foliar spray trial on chlorotic sorghum in a high pH soil (Everglades
mucky peat marl subsoil mixture) on the Station farm at Zellwood.
Plants were 2-3 feet high, in the leafy stage prior to tasselling.

Two replicates were applied; the first on June 10 and the second
on June 11, 1970. Plot size was 6 x 10 feet or .0013 acres. The
sorghum 1/ was planted in 4 row beds and a 10 foot section of bed was
used as a plot. Adjacent beds were left untreated for comparison.
All treatments were applied at 300 gpa.

Leaf color ratings were made, comparing color of treated plots
with that of adjacent untreated areas, on June 18, 1970. Some natural
re-greening of the entire area, even the untreated plots, was occurring
at this stage of growth.

Results

Treatments and ratings appear in Table 8. Soil analyses appear
in Table 9.

The most noticeable response was from the manganese compounds.
Response to iron was rather spotty and inconsistent, confused somewhat
by the overall tendency of the crop to become greener as the season
advanced. In a few weeks the entire area of sorghum was green,
regardless of treatment.


1/ Sorghum variety: Sudax hybrid (Asgrow Seed Company).









- 15 -


Table 8. Sorghum foliar spray trial, treatments and color ratings,
Zellwood, 1970.

Treatment @ 30Q gpa Color Rating 1/
Material lb./100 gal Rep. A Rep. B


Check, no treatment
Reax Manganese
If fi


Reax Iron
It I


10. PC-208 Iron
11. "
12. "
13. "I


14.
15.
16.
17.

18.
19.
20.
21.


PC-198 Iron
It II II

II it 11


Manganese sulfate
I1 11
ft ft
"t "t


22. Iron sulfate
23. "
24.
25.

26. Manganese and iron sulfates

27. Reax Manganese and Reax
Reax Iron


0.5
1.0
2.0
4.0

0.5
1.0
2.0
4.0

0. 5
1.0
2.0
4.0

0.5
1.0
2.0
4.0

0.5
1.0
2.0
4.0

0.5
1.0
2.0
4.0


0
2
3
4
3.5

4
3.5
4
3

3
3.5
3
3.5

3.5
3
2
2

4.5
4.5
4
4.5

3
3
4
1


2+2


2+2


0
3
3
4
3.5

1
0
0
3.5

0
0
3
3

4
3
2
3

4.5
4.5
4.5
4.5

2
2
3.5
0


4.5


1/ 0 = no improvement,
5 = normal green color and growth.











16 -

Table 9. Soil analyses, sorghum foliar spray experiment, Zellwood,
1970.

Sample Available nutrients lbs/acre
description pH ConduCtivity N03 CaO MgO P 05 K20
25 2

1. 6/10/70 A 7.5 34 H 43800 2115 30 290

2. B 7.6 30 1MH 27980 2115 21 243




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