SG Dairy & Grains

SafeGauge for Dairy & Grains | Determining Nitrogen Loss Risks in Dairy and Grains Systems in High Rainfall Zones

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Assessment info

Assessment Name

Location

Export result
State
Weather station
Year

Soil

Information

Texture	Clay (%)
Sands	0-8
Sandy loam	8-20
Loam	10-30
Clay loam	20-40
Light clay	35-50
Clays	45-100

Drainage class	Range of hydraulic conductivity (mm/h)
Very slow	0.03-0.3
Slow	0.3-3
Moderate	3-30
High	30-300
Extreme	300-3000

Block characteristics

Slope (%)
Distance to water course (m)
Depth to groundwater (m)
Block area (ha)

Pasture

Pasture type
Legume type
Percent legume mix(%)
Percent ground cover(%) (Ground cover includes both plants and litter to prevent soil erosion)

LAST GRAZING ROTATION Expand

How many days since previous grazing (days)

Grazing date as (dd/mm)

Number of cows/block

Pre-grazing drymass (kg DM/ha)

Amount of N applied for the above drymass (kg-N/ha)

Concentrates/grains fed (kg/cow/day)
(Multiple entries of up to 5 are allowed in rows)

Type

Enter amount
(kg/cow/day)

Weight

Forage fed (kg/cow/day)
(Multiple entries of up to 5 are allowed in rows)

Type

Enter amount
(kg/cow/day)

Weight

CURRENT GRAZING ROTATIONExpand

Grazing date (dd/mm)

Number of cows/block

Target pre-grazing drymass(kg DM/ha)

Is the last grazing and current grazing are in the same season?

Usual pre-grazing drymass (kg/DM/ha) for this season

Amount of N applied for the above drymass (kg-N/ha)

Target concentrate feed (kgDM/cow/day)
(Multiple entries of up to 5 are allowed in rows)

Type

Enter amount
(kg/cow/day)

Weight

Target forage feed (kgDM/cow/day)
(Multiple entries of up to 5 are allowed in rows)

Type

Enter amount
(kg/cow/day)

Weight

Next grazing likely date (dd/mm)

FERTILISER MANAGEMENT

(Provide fertiliser application details during last and current grazing periods)

Last grazing period

Fertiliser type

Date applied as
(dd/mm)

Amount Applied
(kg/ha.application)

Current grazing period

Fertiliser type

Date applied as
(dd/mm)

Amount Applied
(kg/ha.application)

EFFLUENT MANAGEMENT

(Provide fertiliser application details during last and current grazing periods)

Last grazing period

Effluent type

Date applied as
(dd/mm)

Amount Applied
(kg/ha for Solid OR ML/ha for Liquid)

Current grazing period

Effluent type

Date applied as
(dd/mm)

Amount Applied
(kg/ha for Solid OR ML/ha for Liquid)

Assessment info

Assessment Name

Location

Export result
State
Weather station

Soil

Information

Texture	Clay (%)	A Horizon	B Horizon
Sandy/silt loam	<20%
Sandy clay/clay loam	20-50%
Clay	>50%

Drainage class	Ksat (mm/hr)	A Horizon	B Horizon
Low	<50
Moderate	50-150
High	>150

Current crop

Crop type

Stubble management/site preperation

Stubble management
Cultivation

Block characteristics

Slope (%)
Distance to water course (m)
Depth to groundwater (m)

Year

Year
Growing season rainfall (mm)
Sowing date (dd/mm)

Initial Soil N Status

(This is calculated from either soil test results or estimated based on soil carbon levels in the soil)

Has pre-sowing soil test?
Pre-sowing soil test
Date (dd/mm)
Nitrate N (mg/kg)
Ammonium N (if measured)
Sample depth (cm)

Estimated soil organic carbon

Fertiliser Management

Fertiliser type

Date applied as
(dd/mm)

Amount Applied
(kg/ha.application)

Cumulative number of days when risk conditions are present

Pre-Sowing denitrification risk:

Daily risk assessment (shows how big the risk is)

Nitrogen Summary (numbers are indicative only)

(Unit: kgN/ha)

Assessment Name
Initial soil N
Fertiliser applied

N_Mineralisation
N_Crop uptake

N loss in runoff
N loss in drainage
N loss in denitrification

Balance(Inputs-Outputs)

Cumulative number of days when risk conditions are present

Last Grazing Period		Current Grazing Period

Daily Risk Assessment (shows how big the risk is)

The dates shown on the graph are not actual. It shows that if the selected “Last and Current Grazing periods” were expected to be similar to the chosen “Year” in the Location/Soil tab, the N loss risk would likely to be this.

Nitrogen Summary (numbers are indicative only)

(Unit: kgN/ha)	Last
Assessment Name
Grazing period
Fertiliser Applied
Effluent Applied

N Urine & dung if spread uniformly
N Fixation in soil
N Pasture Uptake

N loss in runoff
N loss in drainage
N loss in denitrification

Balance(Inputs-Outputs)

Current

SafeGauge for Dairy & Grains (v)
© 2016 State of Victoria (Department of Economic Development, Jobs, Transport & Resources) in association with Fertcare and National Centre of Engineering in Agriculture, University of Southern Queensland. All rights reserved.

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