The information below shows an example of an average Canterbury dairy farm that was using 240kg of N/ha, followed by the financial impact of reducing nitrogen fertiliser use to fit within the N cap regulations, as well as examples of partially and fully using N-Boost.
To see the impact this would have on your own farming system just enter your farms information into the marked fields.
Farmer Inputs | |
---|---|
No. of Hectares | |
Solid application (spreading) cost ($ / hectare) | |
N-Boost application (spraying) cost ($ / hectare) | |
Urea price ($ / tonne) | |
N Boost cost ($ / Litre) | |
Revenue ($ / KG milk solids) |
Fertiliser/ N-Boost Assumptions | Current situation (Pre N cap) |
1. Reducing spread urea to get under the 190 cap |
2. Partial use of N-Boost | 3. Full use of N-Boost |
---|---|---|---|---|
Spread urea rate per round (kg/ha) | 0 | |||
No. of solid (spread) urea applications | 0 | |||
Urea rate per round with N-Boost spray system (kg/ha) | 0 | 0 | ||
No. of N-Boost system (spray) applications (rounds) | 0 | 0 | ||
N Boost rate (Litres / hectare) | 3 | 3 | 3 | 3 |
Nitrogen applied per ha p.a. from spread urea | 258 | 184 | 110.4 | 0 |
Nitrogen applied per ha p.a. from N-Boost system | 0 | 0 | 73.6 | 129 |
Total KG Nitrogen applied per ha p.a. | 258 | 184 | 184 | 129 |
From Donaghys scientific pasture trials | ||||
---|---|---|---|---|
Pasture N Response to solid N (KG DM / KG Nitrogen) | 12 | 12 | 12 | 12 |
Pasture N Response to N-Boost | 24 | 24 | 24 | 24 |
Milk solids response (KG DM / 1 KG milk solids) | 12.8 | 12.8 | 12.8 | 12.8 |
CALCULATED RESULTS | per ha | Total farm | per ha | Total farm | per ha | Total farm | per ha | Total farm |
---|---|---|---|---|---|---|---|---|
Total Dry Matter grown due to nitrogen application | 3091 | 720250 | 2208 | 514464 | 3091 | 720250 | 3091 | 720250 |
Total milksolids produced | 242 | 56270 | 173 | 40193 | 242 | 56270 | 242 | 56270 |
Total milk solids revenue earned | 1932 | 450156 | 1380 | 321540 | 1932 | 450156 | 1932 | 450156 |
Cost of solid N | 472 | 109995 | 337 | 78568 | 337 | 78568 | 236 | 54997 |
Cost of solid N application | 94.50 | 22019 | 67.50 | 15728 | 40.50 | 9437 | $0.00 | $0 |
Cost of N-Boost | $0.00 | $0 | $0.00 | $0 | 71.40 | 16636 | 124.95 | 29113 |
Cost of N-Boost application | $0.00 | $0 | $0.00 | $0 | 84.00 | 19572 | 147.00 | 34251 |
Total costs including application p.a. | 567.00 | 132013 | 404.70 | 94295 | 533.00 | 124212 | 507.99 | 118362 |
Total costs including application per ha, per round | 80.94 | 80.94 | n/a (2 systems) | 72.57 |
Contribution to profit from nitrogen use | 1365 | 318143 | 975 | 227245 | 1399 | 325944 | 1424 | 331794 |
Difference in calculated profit from current situation | 90898 | 98699 | 104549 |
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