Nutrient Management Workbook
Glossary
Ammonium-N
is the most common form of mineral N in manure and other organic soil
amendments. It is as available to plants as fertilizer nitrogen, but
is also subject to loss into the air if manure is left laying on the
surface of the soil. Ammonium N will bind to soil particles so does
not normally leach.
K20
Potash (K20) is the form in which fertilizer potassium
is expressed. To calculate the fertilizer replacement value of potassium
from various sources, it has to be converted from elemental K to potash,
and then multiplied by an availability factor.
Manure
Manure includes only agricultural source material other than commercial
fertilizer.
Nitrogen (N)
N is the chemical symbol for nitrogen. It is present in soil
and organic materials in three main forms: Ammonium-N, Nitrate-N,
and Organic N. The availability of the nitrogen to plants depends
on its form.
Nitrate-N
Most ammonium-N is converted into nitrate-N in the soil before
being taken up by plants. If there is more N than the plants can absorb,
it can leach downwards with soil water, creating a risk to groundwater
quality.
Nutrient Management Plan
An NMP is a document prepared for a farm that gives an assessment
of what application rate is appropriate for the land base and what
other standards for land application must be met.
Nutrient Management Strategy
An NMS is a document prepared for a farm that shows how much prescribed
material(s) is going to be produced over a five-year period, as well
as how it will be stored and where it will be used.
Organic N
Much of the nitrogen in manure and other soil amendments is in the
organic form. This is not available to plants until it has been converted
into ammonium-N. The rate at which this occurs depends on temperature
and moisture, as well as on degradability of the organic material.
P205
Phosphate (P205) is the form in
which fertilizer phosphorus is expressed. To calculate the fertilizer
replacement value of phosphorus from various sources, it has to be
converted from elemental P to phosphate, and then multiplied by an
availability factor.
Surface Water
- Natural or artificial channels flowing all year or occasionally
with wetland
- lakes, reservoirs, ponds or wetlands
- Does not include: grassed waterways, furrows, roadside
ditches, areas normally farmed, or artificial water bodies intended
for the storage of treatment of runoff from farm animal yards and
manure storages.
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Conversions – Metric and Imperial
Common Conversions
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1 gallon
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=
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4.546 litres
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|
1 gallon
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=
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1.201 US gallons
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1 gallon
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=
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0.161 ft3
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|
1 US gallon
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=
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3.785 litres
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1 US gallon
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=
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0.833 Imp gallons
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1 ton
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=
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0.907 tonne
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1 pound
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=
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0.454 kilogram
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1 tonne
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=
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2205 pounds
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1 foot3
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=
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6.229 gallons
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|
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1 acre
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=
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0.405 hectare
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1 acre
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=
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43,560 feet2
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1 lb/ac
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=
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1.12 kilogram/hectare
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1 ton/ac
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=
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2.25 tonnes/hectare
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1 gal/ac
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=
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11.2 litre/hectare
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1000 gal/ac
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=
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11200 litre/hectare
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1000 gal/ac
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=
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11.2 metre3/hectare
|
|
1 metre
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=
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3.28 feet
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1 metre
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=
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39.4 inches
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Application Rate Conversions
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Metric to Imperial (Approximate)
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Litres per hectare x 0.09
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=
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gallons per acre
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Litres per hectare x 0.36
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=
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quarts per acre
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Litres per hectare x 0.71
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=
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pints per acre
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Millilitres per hectare x 0.015
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=
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fluid ounces per acre
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Grams per hectare x 0.015
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=
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ounces per acre
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Kilograms per hectare x 0.89
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=
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pounds per acre
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Tonnes per hectare x 0.45
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=
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tons per acre
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| Kilograms per 1000L x 10 |
= |
lbs per 1000 gallons |
|
|
Imperial to Metric (Approximate)
|
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gallons per acre x 11.23
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=
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litres per hectare (L/ha)
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quarts per acre x 2.8
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=
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litres per hectare (L/ha)
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pints per acre x 1.4
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=
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litres per hectare (L/ha)
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fluid ounces per acre x 70
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=
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millilitres per hectare (mL/ha)
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tons per acre x 2.24
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=
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tonnes per hectare (t/ha)
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pounds per acre x 1.12
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=
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kilograms per hectare (kg/ha)
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ounces per acre x 70
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=
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grams per hectare (g/ha)
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| Pounds per ton x .5 |
= |
Kilograms per tonne |
|
Back
to the Nutrient Management Workbook Table of Contents
For more information:
Toll Free: 1-866-242-4460
E-mail: nman.omafra@ontario.ca
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