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Group Title: Microcomputer program - fertilization cost comparisons for wholesale container woody ornamental nurseries
Title: A Microcomputer program - fertilization cost comparisons for wholesale container woody ornamental nurseries
CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00095253/00002
 Material Information
Title: A Microcomputer program - fertilization cost comparisons for wholesale container woody ornamental nurseries
Alternate Title: FERTCOST
Fertilization cost comparisons for wholesale container woody ornamental nurseries
Physical Description: 1 computer disk : 5 1/4 in. + ;
Language: zxx
English
Creator: Yeager, Thomas H ( Thomas Henry ), 1952-
Ingram, Dewayne L ( Dewayne Lebron ), 1952-
Florida Cooperative Extension Service
Publisher: Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1987
Copyright Date: 1987
Edition: Version 1.0.
 Subjects
Subject: Ornamental woody plants -- Economic aspects   ( lcsh )
Fertilizers -- Economic aspects   ( lcsh )
Nurseries (Horticulture) -- Economic aspects   ( lcsh )
FERTCOST (Computer program)   ( lcsh )
 Notes
Summary: FERTCOST was developed to calculate yearly fertilization cost for a specific size of container-grown woody ornamental plant receiving fertilizer by several application methods.
System Details: System requirements: IBM PC or compatible; MS-DOS; 128K; monochrome or color display; single disk drive. Optional: printer.
General Note: Title on disk label: FERTCOST.
General Note: Description based on: documentation dated March 1987.
Statement of Responsibility: Thomas H. Yeager and Dewayne L. Ingram.
 Record Information
Bibliographic ID: UF00095253
Volume ID: VID00002
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 20703437

Table of Contents
    Front Cover
        Front Cover 1
        Front Cover 2
    Title Page
        Title Page 1
        Title Page 2
    Main
        Page 1
        Page 2
        Page 3
        Page 4
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
        Page 13
        Page 14
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20
        Page 21
        Page 22
        Page 23
        Page 24
        Page 25
        Page 26
        Page 27
        Page 28
        Page 29
        Page 30
        Page 31
        Page 32
        Page 33
        Page 34
        Page 35
        Page 36
        Page 37
        Page 38
    Back Cover
        Page 39
        Page 40
Full Text
101
F6G c
G65
March 1987


Floppy disc included with this
item has been shelved separately.
Consult LUIS or ask circulation
staff for assistance.


A Microcomputer Program

Fertilization Cost Comparisons for Wholesale
Container Woody Ornamental Nurseries


COMPUTER SERIES


T.H. Yeager and D.L. Ingram


Central Science
Library

JAN 30 1990

University of Florida |


7-
mm


101
01 ive Extension Swvice / Institute of Food and AgriculturuM Suienas / Univerdty of Florida / John T. Woes, Dean
F636c
765
codebk


Circular 765




















A Microcomputer Program Fertilization Cost Comparisons
for Wholesale Container Woody Ornamental Nurseries







Thomas H. Yeager and Dewayne L. Ingram
Extension Ornamental Horticulturists
Ornamental Horticulture Department
IFAS, University of Florida







Copyright, 1986, IFAS, UF







The authors gratefully acknowledge Justine Wetherington for writing
FERTCOST in Pascal computer language.


UtflKIKSITY OF FLORIRDA











Computations for cost of fertilization of container-grown woody
ornamentals are lengthy, cumbersome, and require several conversion

factors. Consequently these computations are often not performed.
FERTCOST, as outlined in Figure 1, was developed to calculate yearly
fertilization cost for a specific size of container plant receiving

fertilizer by one or combinations of the following methods of
application: broadcasting dry fertilizer, top-dressing dry
fertilizer, incorporating dry fertilizer into the growth medium,
and/or injecting water soluble fertilizer in the irrigation water.

The calculated costs are based on the same plant of a specific
container size. Therefore, another plant of the same container
size, but in a different location of the nursery, may have different
fertilization costs because that plant receives fertilizer by a
different methods) of application. The program is written in

Pascal.


CONFIGURATIVE REQUIREMENTS

1. IBM or compatible microcomputer
2. MS-DOS Operating System
3. 128 K Memory

4. Monochrome or color display
5. Single Disk Drive
6. Printer (optional)










HOW TO BEGIN

1. Turn computer on. Use your regular boot (DOS) disk.
2. Place FERTCOST disk into drive unit.

3. Type FERTCOST (press the return key).


If you wish to view the credits and a brief
description of this program, simply type in the

letter C and press . If you want to start the

program, just press .


After credits and abstract have been viewed or skipped, the
following information will be needed for data input.

A. BROADCAST dry fertilizer

1. Brand of fertilizer you are applying.

2. Analysis or grade (example 8-8-8) of the fertilizer. This

is the percent of nitrogen (N), phosphorus pentoxide

(P205), and potassium oxide (K20) in the fertilizer.
3. Size rating (in gallons) of container you are fertilizing

and container diameter and height.
4. Number of containers per acre.

5. Fertilizer application rate as pounds of nitrogen,

phosphorus pentoxide (P205), potassium oxide (K20), or
fertilizer per acre.
6. Number of times per year the fertilizer in 1 and 2 above

is applied.








7. Time required for 1 worker to fertilize 1 acre of

containers as specified in 3 and 4 above, with 1

application.

8. Wages paid per hour per worker for fertilization.

9. Cost per ton or pound of fertilizer specified in 1 and 2

above.


B. INCORPORATED The following must be obtained whether

fertilizer is incorporated by a dealer or at the nursery.

1. Brand of fertilizer you are applying.

2. Analysis or grade (example 8-8-8) of the fertilizer. This

is the percent of nitrogen (N), phosphorus pentoxide

(P205), and potassium oxide (K20) in the fertilizer.
3. Size rating (in gallons) of container you are fertilizing

and container diameter and height. Calculations are based

on total container volume. Volume occupied by an original

container is not taken into account if plant was moved up to

a larger container size.

4. Amount of fertilizer specified in 1 and 2 above that is

incorporated in 1 cubic yard of growth medium.

5. Time required for 1 worker to incorporate fertilizer in 1

cubic yard of growth medium.

6. Wages paid per hour per worker for fertilizer

incorporation.

7. Cost per ton or pound of fertilizer specified in 1 and 2

above.








C. INJECTION

1. Brand of fertilizer you are applying.
2. Analysis or grade (example 8-8-8) of the fertilizer. This

is the percent of nitrogen (N), phosphorus pentoxide

(P205), and potassium oxide (K20) in the fertilizer.
3. Size rating (in gallons) of container you are fertilizing

and container diameter and height.
4. Number of containers per acre.
5. Fertilizer application rate as either pounds of fertilizer

per acre; pounds of fertilizer per gallon of water; pounds
of nitrogen, phosphorus pentoxide (P205), or potassium
oxide (K20) per acre; gallons of fertilizer per acre; or

parts per million (ppm) nitrogen (N), phosphorus (P), or
potassium (K). If application rate is given in pounds per
gallon of irrigation water or ppm, then you must know how
much water is applied per irrigation (inches or gallons
per container or acre).
6. Number of times per year the fertilizer in 1 and 2 above

is applied.
7. Drip or trickle irrigation use.
8. Time required for 1 worker to fertilize 1 acre of

containers as specified in 3 and 4 above, with 1
application.
9. Wages paid per hour per worker for fertilization.

10. Cost per ton or pound of fertilizer specified in 1 and 2
above.








D. TOP-DRESS dry fertilizer
1. Brand of fertilizer you are applying.

2. Analysis or grade (example 8-8-8) of the fertilizer. This

is the percent of nitrogen (N), phosphorus pentoxide

(P205) and potassium oxide (K20) in the fertilizer.
3. Size rating (in gallons) of container you are fertilizing

and container diameter and height.

4. Fertilizer application rate as teaspoons, tablespoons,

grams, or pounds of fertilizer per container.

5. Number of times per year the fertilizer in 1 and 2 above

is applied.

6. Number of containers specified in 3 above that are

fertilized in 1 hour by 1 worker, with 1 application.

7. Wages paid per hour per worker for fertilization.

8. Cost per ton or pound of fertilizer specified in 1 and 2

above.


After making the appropriate inputs, a summary of fertilizer

and labor costs is provided for a single plant of a specified

container size and receiving fertilizer(s) by one or more methods

of application.


SAMPLE RUN

Letters or numbers in quotes are entered by the user. Quotes

are not entered. Phrases in boxes are viewed on screen.








These are the methods of fertilization available:

1. BROADCAST DRY

2. INCORPORATED

3. INJECTION

4. TOP-DRESS

Choose one of the four methods listed above. "1"


Listed above are the methods of fertilizer application that are

used in this program.

1. Broadcast dry is selected when dry fertilizers are broadcast

over plants or containers.

2. Incorporated is selected when dry fertilizers are mixed into

the growth medium.

3. Injection is selected when dry or solution fertilizers are

applied in irrigation water.

4. Top-dress is selected when a specified amount of dry fertilizer

is delivered to the growth medium surface of each container.


1. BROADCAST DRY The following inputs as outlined above will

be used for the sample run.

1. GROWMORE 6. 2 11. 4

2. 8-8-8 7. 50 12. A

3. 1 8. 2 13. 100

4. Y 9. A 14. Y

5. 35000 10. 30 15. N









1. What brand of fertilizer are you broadcasting?

"GROWMORE"


2. What is the analysis or grade of the fertilizer you are

broadcasting?

Enter the analysis (press return after each number).


"8"-

8 -"8"-
8 8 -"8"


The first number is percent nitrogen (N), the second percent
phosphorus pentoxide (P205), and the third potassium oxide (K20).


3. What size (in gallons) container are you fertilizing?
"1" gallon


4. The container top diameter used for calculations will be 6
inches and the container height will be 6.5 inches.

Enter Y if these are acceptable or N to choose other

dimensions.
"Y" (Y/N)


If N had been entered, the following would be displayed.


Enter the top diameter of your 1 gallon container.

"6.5" inches











A container top diameter of 6.5 inches would be used in the

calculations.


Enter the height of your 1 gallon container.
"7" Inches


A container height of 7 inches would be used in the
calculations.







6. Select units for application rate
1. pounds of nitrogen per acre
2. pounds of phosphorus pentoxide per acre

3. pounds of potassium oxide per acre
4. pounds of fertilizer per acre
"2" (1-4)


7. Enter the application rate for GROWMORE.
"50" pounds phosphorus pentoxide/acre


Units for application rate were selected in question 6.























This is the unit of time required to perform a fertilization.


10. How many minutes of labor does it take to fertilize one
acre of your 1 gallon containers when broadcasting?
"30" minutes/acre


Units for labor were selected in question 9. You should

include loading, mixing, or other time associated with the
broadcasting operation; however, be consistent when making
comparisons. Minutes of labor to fertilize 1 acre are based on 1
worker or figured on a per worker basis for 1 application.


11. What is your hourly labor wage when broadcasting GRONMORE?
Enter dollars paid per hour.
"4" $/hour


8. How many times in one year is GRONHORE applied to the 1
gallon container when broadcasting?
"2" applications/year








You should include costs associated with labor other than just

the hourly wage (example: FICA); however, be consistent when

making comparisons. Hourly labor wage is based on 1 worker or

figured on a per worker basis.


12. Select units for purchasing the GRONMORE.

A. tons B. pounds

"A" (A.B)


13. What is the cost of GRONMORE you are broadcasting?

"100" $/ton


Units were selected in question 12.


CONTAINER NURSERY

Method used for a
1 gallon container


Broadcasting GROWMORE 8-8-8


FERTILIZATION COST
Fertilizer
cost/cont/year
$ 0.001786


Labor
cost/cont/year
$ 0.000114


Totals of the I method 0U.0u1780 $ U.UUUJ14
Total cost of fertilization/cont/year $0.001900
Press return to continue.


From the table above, total annual fertilizer cost is

$0.001786 and total labor cost is $ 0.000114 for the 1 gallon

container when broadcasting GROWMORE.









14. Will you fertilize this plant during the year with another
fertilizer or method of fertilization? Enter Y to add

another fertilizer or method; N to end the program.

"Y"



Suppose you also broadcast during the year a fertilizer brand

EXTRAGROW to the 1 gallon container just as you apply GROWMORE.

With all inputs the same, except for the brand and analysis, the

following fertilization cost table is displayed.


Methods used fo
1 gallon contain

Broadcasting GR

Broadcasting EX


CONTAINER NURSERY FERTILIZATION COST

r a Fertilizer
ner cost/cont/year

tOWMORE 8-8-8 $ 0.001786

(TRAGROW 12-12-12 $ 0.001190


Totals of the 2 methods $ 0.002976U
Total cost of fertilization/cont/year -

Press return to continue.


Labor
cost/cont/year

$ 0.000114

$ 0.000114


$ O.UUUZZ
$0.003204


From the table above, total annual fertilizer cost is

$0.002976 and total labor cost is $0.000228 for the 1 gallon

container when broadcasting GROWMORE and EXTRAGROW. Fertilizer

-cost per container per year is less for EXTRAGROW than GROWMORE

because EXTRAGROW contains 12% phosphorus pentoxide and GROWMORE

contains 8% phosphorus pentoxide. Thus, more GROWMORE than

EXTRAGROW fertilizer is required to supply 50 pounds of phosphorus

pentoxide per acre. Labor costs are the same for both fertilizers

since labor inputs were the same.
11


I I I I I









15. W111l you fertilize this plant during the year with another
fertilizer or method of fertilization? Enter Y to add

another fertilizer or method; N to end the program.
"N"


If you wish to select another container size, you must enter N.

A summary of the inputs and outputs is displayed.


Summary of inputs and outputs.


Broadcasting
1 gallon containers
Applied 50.0 pounds phosphorus
Fertilizer costs: $100.00/ton

Labor costs: $4.00 per hour
30 minutes/acre


Broadcasting E
1 gallon containers
Applied 50.0 pounds phosphorus
Fertilizer costs: $100.00/ton

Labor costs: $4.00 per hour
30 minutes/acre


2. INCORPORATED The following

used for the sample run.

1. DELUXE 5.

2. 14-14-14 6.


3. 1

4. 1


GROMHORE 8-8-8
35000 containers per acre
pentoxide/acre 2 times per year
$0.001786 per container per year

$0.000114 per container per year


XTRAGROW 12-12-12
35000 containers per acre
pentoxide/acre 2 times per year
$0.001190 per container per year

$0.000114 per container per year


inputs as outlined above will be


Y

10


7. A

8. 36


9. 4

10. A

11. 2000

12. N








1. What brand of fertilizer are you incorporating?

"DELUXE"


2. What is the analysis or grade of the fertilizer you are

incorporating?

Enter the analysis (press return after each number).


14"

14 "14"

14 14 "14"


3. Select one:

1. Fertilizer incorporated in media before media

purchased.

2. Fertilizer incorporated in media at nursery.

Note: If fertilizer incorporated before purchase and at

nursery, select 1 then 2.

"1" (1,2)


The program would be run again to select the other option.


4. What size (in gallons) container are you fertilizing?
"1" gallons










5. The container top diameter used for calculations will

be 6 inches, and the container height will be 6.5 Inches.

Enter Y if these are acceptable'or N to choose other

dimensions.

"Y" (Y/N)


If N had been entered, the following would be displayed.


Enter the top diameter of your 1 gallon container.

'T' inches


A container top diameter of 7 inches would be used in the

calculations.


Enter the height of your 1 gallon container.

"8" inches


A container height of 8 inches would be used in the

calculations.


6. What is the application rate of fertilizer in pounds per

cubic yard of medium? Enter application rate for DELUXE.
"10" pounds/cubic yard
I I










7. Select units for labor when incorporating, A for minutes,

B for hours.

A. minutes B. hours

"A" (A,B)


This is the unit of time required to perform the

incorporation.


8. How many minutes of labor would it take to incorporate

10 pounds/cubic yard of DELUXE if the fertilizer had

been incorporated at the nursery?

"36" minutes/cubic yard


Units of labor were selected in question 7. You should

include loading, mixing, or other time associated with the

incorporating operation; however, be consistent when making

comparisons. Minutes of labor per cubic yard are based on 1

worker or figured on a per worker basis. If the fertilizer is

incorporated at the nursery, the above display would read as

follows.


How many minutes of labor does it take to incorporate 10

pounds/cubic yard of DELUXE?

"36" minutes/cubic yard









9. What would be your hourly labor wage if the DELUXE had

been Incorporated at the nursery?

"4" $/hour


You should include costs associated with labor other than just

hourly wage (example: FICA); however, be consistent when making,

comparisons. Hourly labor wage is based on 1 worker or figured on

a per worker basis. If the fertilizer is incorporated at the
nursery, the above display would read as follows.


What is your hourly labor wage when incorporating DELUXE?
Enter dollars paid per hour.

"4" $/hour


10. Select units for purchasing the DELUXE.

A. tons B. pounds
"A" (A,B)


11. What would be the fertilizer cost if the DELUXE had been

incorporated at the nursery?
"2000" $/ton


Units were selected in question 10. If the fertilizer is
incorporated at the nursery, the following would be displayed.


What is the cost of DELUXE you are incorporating?
"2000" $/ton










CONTAINER NURSERY

Method used for a
1 gallon container

Incorporating DELUXE 14-14-14


FERTILIZATION COST

Fertilizer
cost/cont/year

$ 0.039390


Labor
cost/cont/year

$ 0.009454


Totals of the 1 method $ 0.039390 $ 0.009454
Total cost of fertilization/cont/year = $0.048844

Press return to continue.

From the table above, total annual fertilizer cost is

$0.039390 and total labor cost is $0.009454 for the 1 gallon

container when DELUXE is incorporated in the growth medium.


12. Will you fertilize this plant during the year with another

fertilizer or method of fertilization? Enter Y to add
another fertilizer or method; N to end the program.
"N"


Summary of inputs and outputs.


Incorporating DELUXE 14-14-14
1 gallon containers 253.9 containers per cubic yard
Applied 10.0 pounds/cubic yard
Fertilizer costs: $2000.00/ton $0.039390 per container per year

Labor costs: $4.00 paid per hour $0.009454 per container per year
36.0 minutes/cubic yard










3. INJECTION The following inputs as outlined above will be used

for the sample run.

1. GATORFERT 6. 4 11. 4

2. 8-8-8 7. 25 12. A

3. 5 8. 1 13. 100

4. Y 9. A 14. N

5. 6926 10. 30


1. What brand of fertilizer are you injecting?

"GATORFERT"


2. What Is the analysis or grade of the fertilizer you are

injecting? Enter the analysis (press return after each

number).


"8"

8 "8"

8 8 "8"


The first number is percent nitrogen (N), the second percent

phosphorus pentoxide (P205), and the third potassium oxide (K20).


3. What size (in gallons) container are you fertilizing?
"5" gallons








4. The container top diameter used for calculations will be
12 inches, and the container height will be 12 Inches.

Enter Y if these are acceptable or N to choose other

dimensions.

"Y" (Y/N)


The container top diameter is used in calculating the amount

of fertilizer that gets into the container when injecting. This

calculation does not take into account deflection of the

fertilizer by different size plant canopies. If "N" had been

entered, the following would be displayed.


Enter the top diameter of your 5 gallon container.

"13" inches


A container top diameter of 13 inches would be used for the

calculations.


Enter the height of your 5 gallon container.

"13" inches


A container height of 13 inches would be used in the

calculations.


5. How many 5 gallon containers are there per acre?

"6926" containers/acre









6. These are the units available when injecting GATORFERT.

1. pounds of fertilizer/acre
2. pounds of fertilizer/gallon of water applied
3. pounds of nitrogen/acre

4. pounds of phosphorus pentoxide /acre
5. pounds of potassium oxide /acre
6. gallons of fertilizer/acre

7. ppm nitrogen
8. ppm phosphorus
9. ppm potassium
"4" (1-9)


7. Enter the application rate for GATORFERT.
"25" pounds of phophorus pentoxide/acre


Units were selected in question 6.


8. How many times in one year is GATORFERT applied to the 5
gallon container when injecting?
"1" application /year


9. Select units for labor when injecting, A for minutes, B
for hours.
A. minutes B. hours
"A" (A.B)










This is the unit of time required to perform a fertilization.


10. How many minutes of labor are required per acre when

applying GATORFERT by injection?

"30" minutes/acre


Units were selected in question 9. You should include

loading, mixing, or other time associated with the injection

operation; however, be consistent when making.comparisons.

Minutes of labor to fertilize 1 acre are based on 1 worker or

figured on a per worker basis for 1 application.


11. What is your hourly labor wage when injecting GATORFERT?

Enter dollars paid per hour.
"4" $/hour


You should include costs associated with labor other than just

the hourly wage (example: FICA); however, be consistent when

making comparisons. Hourly labor wage is based on 1 worker or

figured on a per worker basis.


12. Select units for purchasing the GATORFERT.

A. tons B. pounds
"A" (A,B)














Units were selected in question 12.


Method used for
5 gallon contain

Injecting GATOi


CONTAINER NURSERY FERTILIZATION COST

a Fertilizer
iner cost/cont/year

RFERT 8-8-8 $ 0.002256


TOtalS Of the I metod U.uuzzbb
Total cost of fertilization/cont/year $

Press return to continue.


Labor
cost/cont/year

$ 0.000289


$ U.UUUZUy
0.002545


From the table above, total annual fertilizer cost is

$0.002256 and total labor cost is $0.000289 for the 5 gallon

container when injecting GATORFERT.


14. Will you fertilize this plant during the year with another

fertilizer or method of fertilization? Enter Y to add

another fertilizer or method; N to end the program.
"N"


Summary of inputs and outputs.


Injecting GATORFERT 8-8-8
5 gallon containers 6926 containers per acre
Applied 25.0 pounds of phosphorus pentoxide/acre 1 time per year
Fertilizer costs: $100.00/ton $0.002256 per container per year

Labor costs: $4.00 per hour $0.000289 per container per year
30.0 minutes/acre


13. What is the cost of GATORFERT you are injecting?

"100" $/ton











If 8 was selected for question 6 of the previous example and

DRIPGATOR fertilizer was applied by drip irrigation, the following

would be displayed.


Enter the application rate for DRIPGATOR.
"95" ppm phosphorus



If 95 ppm phosphorus from DRIPGATOR fertilizer and 0.244

gallons of water are applied per container by drip irrigation,

this would be equivalent to 3.1 pounds of phosphorus pentoxide per

acre; however, an equivalent amount of P205 (.00045 lb) is applied

per container with either method of irrigation.


Select units for application of water to the 5 gallon

container.

1. inches water per container

2. gallons water per acre

3. gallons water per container

"31 (1-3)


Enter the amount of water applied at each fertilization.
"0.244" gallons/container


Units were selected above.












Method used for
5 gallon contain

Injecting DRIP(


CONTAINER NURSERY FERTILIZATION COST
r a Fertilizer
iner cost/cont/year c

GATOR 8-8-8 $ 0.000281


Labor
:ost/cont/year

$ 0.000289


Totals of the 1 method $ 0.000281 $ 0.000289
-Total cost of fertilization/cont/year = $ 0.000570

Press return to continue.


Since 3.1 and 25 pounds of phosphorus pentoxide are applied

per acre by DRIPGATOR and GATORFERT, respectively, fertilizer cost

for DRIPGATOR ($0.000281) is one-eighth that of GATORFERT

($0.002256).


Summary of inputs and outputs.


Injecting DRIPGATOR 8-8-8
5 gallon containers 6926 containers per acre
Applied 95.0 ppm phosphorus 1 time per year
Applied in 0.244 gallons/container or 1689.94 gallons/acre
Fertilizer costs: $100.00/ton $0.000281 per container per year

Labor costs: $4.00 per hour $0.000289 per container per year
30.0 minutes/acre


4. TOP-DRESS The following inputs as outlined

for the sample run.

1. SUPERFERT 5. 3 9.

2. 7-7-7 6. 6 10.


3. 1

4. Y


7. 2

8. 2000


11.

12.


above will be used


4

A

2000

N









1. What brand of fertilizer are you top-dressing?

"SUPERFERT"


2. What is the analysis or grade of the fertilizer you are

top-dressing? Enter the analysis (press return after each

number).


"7"
7 "7"

7 7 117"


3. What size (in gallons) container are you fertilizing?
"1" gallon


4. The container top diameter used for calculations will

be 6 inches, and the container height will be 6.5 inches.
Enter Y if these are acceptable or N to choose other

dimensions.

"Y" (Y/N)


If N had been entered, the following would be displayed.


Enter the top diameter of your 1 gallon container.

"7" inches










A container top diameter of 7 inches would be used in the

calculations.


Enter the height of your 1 gallon container.

"8" inches


A container height of 8 inches would be used in the

calculations.


5. Select units for application rate.

1. teaspoons
2. tablespoons

3. grams
4. pounds
"3" (1-4)


The quantity of fertilizer applied per 1 gallon container is 6

grams. Thus, grams were selected in question 5 and 6 entered for

question 6. If 1 was entered in question 5, the following would
be displayed.


How many teaspoons are applied per application to the 1
gallon container?

"1" teaspoon/container









The computer would search internal files to locate brand

entered in question 1 and the weight of fertilizer applied per
application to the 1 gallon container would be displayed as follows.


The weight of SUPERFERT applied per application to each
container is 7.5 grams (0.01651 pounds). If this is

acceptable, enter Y. Enter N to specify the weight.

"N" (Y/N)


If you did not agree with this weight, enter N. The following
would be displayed.


Select units for the weight of SUPERFERT applied to the 1

gallon container.
A. grams per container

B. pounds per container

"A" (A,B)


Enter the weight of SUPERFERT applied per application to
the 1 gallon container.
"7" grams/container


Units were selected in previous question. A weight of 7 grams
of SUPERFERT per application to the I gallon container would now
be used for fertilizer cost calculations.








In question 5, grams were chosen so the preceding questions

were not displayed. The number of grams applied is entered in
question 6.


6. How many grams are applied per application to the 1 gallon
container?
"6" grams/container


7. How many times in one year is SUPERFERT applied to the 1
gallon container when top-dressing?
"2" applications/year


8. How many containers are top-dressed in one hour?
"2000" containers/hour


You should include loading, mixing, or other time associated
with top-dressing when determining number of containers
top-dressed per hour; however, be consistent when making
comparisons. Number of containers top-dressed in 1 hour is based
on 1 worker or figured on a per worker basis per application.


9. What is your hourly labor wage when top-dressing
SUPERFERT? Enter dollars paid per hour.
"4" $/hour









You should include costs associated with labor other than just

the hourly wage (example: FICA); however, be consistent when

making comparisons. Hourly labor wage is based on 1 worker or

figured on a per worker basis.


10. Select units for purchasing the SUPERFERT.

A. tons B. pounds

"A" (A,B)


11. What is the cost of SUPERFERT you are top-dressing?

"2000" $/ton


Units were selected in question 10.


CONTAINER NURSERY FERTILIZATION COST

Method used for a Fertilizer' Labor
1 gallon container cost/cont/year cost/cont/year

Top-dressing SUPERFERT 7-7-7 $ 0.026456 $ 0.004000
Totals of the I method $ 0.026456 $ 0.004000
Total cost of fertilization/cont/year $0.030456
Press return to continue.


From the table above, total annual fertilizer cost is

$0.026456 and total labor cost is $0.00400 for the 1 gallon.

container when top-dressing SUPERFERT.


















Summary of inputs and outputs.


Top-dressing SUPERFERT 7-7-7
1 gallon containers
Applied 6.0 grams per container 2 times per year
Fertilizer costs: $2000.00/ton $0.026456 per container per year

Labor costs: $4.00 per hour $0.004000 per container per year
2000 containers per hour


If the growth medium in this container received the DELUXE

incorporation in addition to the top-dress application of

SUPERFERT, the fertilization costs would be displayed as below

after making appropriate inputs for both methods of application.

I ; [I I I I I I I I I I I I I I I I I I l U I I I I I J I I I


CONTAINER NURSERY

Methods used for
a 1 gallon container

Incorporating DELUXE 14-14-14

Top-dressing SUPERFERT 7-7-7


FERTILIZATION COST

Fertilizer
cost/cont/year
$ 0.039390

$ 0.026456


Totals of the Z methods ~ U.UObU4O


Totals of the Z methods $ u.ub5M
Total cost of fertilization/cont/year $

Press return to continue.


Labor
cost/cont/year
$ 0.009454

$ 0.004000


SUU40.07930
0.07930


Since fertilizer was applied by the two methods to the same

container, the costs for each method are added.
30


12. Will you fertilize this plant during the year with another

fertilizer or method of fertilization? Enter Y to add

another fertilizer or method; N to end the program.
"N"


. .. .. . . I I I II II I










Will you fertilize this plant during the year with another

fertilizer or method of fertilization? Enter Y to add

another fertilizer or method; N to end the program.
"N"



Summary of inputs and outputs.


Incorporating DELUXE 14-14-14
1 gallon containers 253.9 containers per cubic yard
Applied 10.0 pounds/cubic yard
Fertilizer costs: $2000.00/ton $0.039390 per container per year

Labor costs: $4.00 paid per hour $0.009454 per container per year
36.0 minutes/cubic yard




Top-dressing SUPERFERT 7-7-7
1 gallon containers
Applied 6.0 grams per container 2 times per year
Fertilizer costs: $2000.00/ton $0.026456 per container per year

Labor costs: $4.00/hour $0.004000 per container per year
2000 containers per hour


The function "print screen" may be used for a hard copy of

fertilization cost tables and summary screens.









COMPUTATIONAL FORMULAS


A. Broadcast Dry

Rate units


Applied

Applied

Applied

Applied

Applied


pounds

pounds

pounds

pounds


nitrogen per acre

phosphorus pentoxide per acre

potassium oxide per acre

fertilizer per acre


pounds of fertilizer applied per acre =

Rate A/(nit/100)

Rate B/(phos/100)

Rate C/(potas/100)

Rate D


Nit = percentage nitrogen in fertilizer

Phos = percentage phosphorus pentoxide in fertilizer

Potas = percentage potassium oxide in fertilizer


Apprate = applied timesapp fertcost

Timesapp = number of applications

Fertcost = cost of one pound of fertilizer


The cost of fertilizer per container =

Fertpercont = apprate/contperacre

Contperacre = containers per acre








The cost of labor per container =
Laborcost = laborrate timesapp hours *

(1/contperacre)

Laborrate = dollars paid per hour

Hours = hours to fertilize one acre




B. Incorporated

The cost of fertilizer per container =

Fertpercont = apprate control fertcost


Apprate = pounds of fertilizer per cubic yard

Contvol = container volume (Table 1)

Fertcost = cost of one pound of fertilizer


The cost of labor per container =

Laborcost = (laborrate minutes control)


Laborrate dollars paid per minute

Minutes = minutes to incorporate fertilizer in one cubic yard

of media









C. Injection

Rate units


= pounds of fertilizer per acre

= pounds of fertilizer per gallon of water applied

= pounds of nitrogen per acre

= pounds of phosphorus pentoxide per acre

= pounds of potassium oxide per acre

= gallons of fertilizer per acre


ppm nitrogen

ppm phosphorus

ppm potassium


Applied = pounds of fertilizer applied per acre

Applied = Rate A

Applied = Rate B water (gallons per acre)

If drip irrigation is used:

Water unit a = inches water per container

Water = (3.14) ((topdia/2)2) a contperacre (1/231)

Water = water unit b = gallons water per acre

Water unit c = gallons water per container

Water = c contperacre

If drip irrigation is not used:

Water unit d = inches water per acre

Water = d 27150 (gallons/per acre-inch)

Water = unit e = gallons water per acre

Applied = Rate C /(nit/100)

Applied = Rate D/(phos/100)








Applied = Rate E/(potas/100)
Nit = percentage nitrogen in fertilizer

Phos = percentage phosphorus pentoxide in fertilizer

Potas = percentage potassium oxide in fertilizer

Applied = Rate F galpounds

Galpounds = 10 pounds per gallon of concentrated

fertilizer. The default is 10 unless

specified.

Applied = ((Rate G/(nit/100))/119947) water

119947 ppm = 1 pound per gallon

Applied = ((Rate H/((phos/100) x (0.436)))/119947) water

Applied = ((Rate I/((potas/100) x (0.83)))/119947) water


Apprate = applied timesapp fertcost

Timesapp = number of applications

Fertcost = cost of one pound of fertilizer


The cost of fertilizer per container =

Fertpercont = apprate/contperacre

Contperacre = containers per acre


The cost of labor per container =

Laborcost = laborrate timesapp hours (1/contperacre)

Laborrate = dollars paid per hour

Hours = hours to fertilize one acre









D. Top-dress
Rate units A = teaspoons
B = tablespoons

C = grams

D = pounds
If units are A or B, and brand of fertilizer is listed in

Table 2, then the gram weight for a teaspoon or tablespoon is

given. This weight may be used, a different weight entered,
or a default of 7.49 grams for a teaspoon and 14.54 grams for

a tablespoon may be used. Grams are converted to pounds

(grams/453.59 pounds).


Apprate = rate amt
rate = number of teaspoons or tablespoons per container
amt weight of teaspoon or tablespoon of fertilizer

If unit is C, then grams are converted to pounds.


The cost of fertilizer per container =
Fertpercont = apprate timesapp fertcost

Apprate = pounds of fertilizer per container per application
Timesapp = number of applications

Fertcost = cost of one pound of fertilizer


The cost of labor per container =
Laborcost = laborrate (1/contperhour) timesapp

Laborrate = dollars paid per hour

Contperhour = containers fertilized per hour







Table 1. Container dimensions used for computations.


Container
size
(gallons)

1

2

3

4

5

6

7


Container
area
(square inches)

28.27

50.26

78.54

95.03

113.10

122.66

132.73


Top
diameter
(inches)

6

8

10

11

12

12.5

13


Container volume
(cubic inches)

183.78

402.12

667.59

1045.36

1357.20

1471.88

1592.71


control (cubic yards) = control (cubic inches)/(363)


Table 2. Granular fertilizer weights used for computations.

Brand Teaspoon Tablespoon
weight (g) weight (g)

Progrow or Scotts default 16.21

Shore 8.20 default

Osmocote or Sierra 6.00 12.65

Lesco 8.65 default

Millers 8.60 default

Peoples default 13.66
default (18% N) 18.95

IMC default 21.20

FEC default 13.45

Sunniland default 14.20

Atlantic default 12.30

Deful = 7. i i 49g 14. i iuii 5


Height
(inches)

6.5

8

8.5

11

12

12

12


14.54g


Default =


7.49g








Figure 1. Fertilization cost calculation flow chart.


Trade names and companies are mentioned with the understanding that
no discrimination is intended nor endorsement implied by the
University of Florida.







































































COOPERATIVE EXTENSION SERVICE, UNIVERSITY OF FLORIDA, INSTITUTE OF FOOD AND AGRICULTURAL SCIENCES, K.R. Tefertiller,
director, in cooperation with the United States Department of Agriculture, publishes this information to further the purpose of the May 8 and
June 30, 1914 Acts of Congress; and Is authorized to provide research, educational information and other services only to individuals and institu. l U
tions that.function without regard to race, color, sex or national origin. Single copies of Extension publications (excluding 4-H and Youth publica-
tions) are available free to Florida residents from County Extension Offices. Information on bulk rates or copies for out-of-state purchasers is ""="='
available from C.M. Hinton, Publications Distribution Center, IFAS Building 664, University of Florida, Gainesville, Florida 32611. Before publicizing this publication,
editors should contact this address to determine availability.




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