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Dry weight of biomass removed by grazing daily
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Dry weight of manure deposited daily
Minimum plant biomass for grazing to occur
Fertilizer name for manure deposited during grazing
The fertilizer name for manure deposited during grazing is a foreign key referencing name in fertilizer.frt.
Dry weight of biomass removed by trampling daily
Trampling becomes significant as the number of animals grazing per hectare increases. This is a very subjective value which is typically set equal to bm_eat, i.e., the animals trample as much as they eat.
Grazing operation name
The name of the grazing operation is a primary key referenced when grazing operations are scheduled in management.sch or lum.dtl. All names in the graze.ops file must be unique.
| Name | Description |
|---|---|
This file contains pre-defined grazing operations.
This operation removes plant biomass at a specified rate and allows simultaneous application of manure.
The parameter values of the pre-defined grazing operations are very rough estimates. If grazing is relevant in a watershed, the user should research their own values based on the stocking rate and type of animal.
| Field | Description | Type | Unit | Default | Range |
|---|---|---|---|---|---|
dairy_high
High-productivity dairy
dairy_low
Low-productivity dairy
beef_high
High-productivity beef
beef_low
Low-productivity beef
swine_high
High-productivity swine
swine_low
Low-productivity swine
sheep_high
High-productivity sheep
sheep_low
Low-productivity sheep
goats_high
High-productivity goats
goats_low
Low-productivity goats
horses_high
High-productivity horses
horses_low
Low-productivity horses
Grazing operation name
string
n/a
n/a
n/a
Fertilizer database name for manure deposited during grazing
string
n/a
n/a
n/a
Dry weight of biomass removed by grazing daily
real
(kg/ha)/day
0.0
0.0-500.0
Dry weight of biomass removed by trampling daily
real
(kg/ha)/day
0.0
0.0-500.0
Dry weight of manure deposited daily
real
(kg/ha)/day
0.0
0.0-500.0
Minimum plant biomass for grazing to occur
real
kg/ha
0.0
0.0-5000.0