| 2.1
Estimating the volume of manure produced
Estimating the volume of manure
produced is important to determine if storage facilities are adequate
for critical periods.
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You will need the following
information:
Critical Storage
Period:
The critical storage
period is the number of continuous days manure and wastewater
cannot be land applied or otherwise used. This may occur during
winter or during the growing season when applications cannot be
made to crops. In Utah, the critical winter storage period may
range from 45 to 150 days depending on location (see Table
1 - Approximate days of winter storage required) and your
manure handling/treatment system.
Storage requirements
for wastewater may be longer than for solids depending on the
type of wastewater application system. Contact your local NRCS
office for assistance in estimating the number of days of storage
needed for your area and situation.
Daily Manure Production
Estimate for Each Livestock Type:
Manure production
estimates for various livestock types are presented in Table
2 - Livestock type and daily manure volume production.
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Use
the following Worksheet (Volume of Manure Produced) which estimates
the total cubic feet (ft3) of manure produced by livestock during the
critical storage period.
Word
Excel
(*Note- Excel spreadsheets
are programed to do calculations for you. On some computers you can
do calculations directly on your computer. On others you must save Excel
files to your computer or disk before using the spreadsheets. )
Directions for Volume of
Manure Produced Worksheet :
Section A: Manure Produced
Enter the number of animals
for each type/class, the average animal weight, and the length of
time manure must be stored on the Worksheet.
Obtain the appropriate
manure production estimates from Table
2 - Livestock type and daily manure volume production.and calculate
the total volume of manure produced by each livestock type/class.
Repeat the procedure for
each livestock group and add the results together to determine the
total volume produced for the storage period.
Section B: Current Storage
Capacity
Calculate the volume of
manure storage currently available.
Compare the cubic feet
(ft3) of manure produced to the volume of storage available.
Back
to Step 2
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