Grassland practical example:
Yield impact of weeds
Grassland target yield
- Target yield: 10000 kg DM/ha
- Energy density: 6.0 MJ NEL/kg DM
- Protein content: 160 g/kg DM
Actual situation
- 15 % gaps, docks (1 plant/m²) or other useless species of plant
Without calculating any additional damage, there is a “deficit” of:
- 9000 MJ NEL per ha
- 240 kg protein per ha
Loss of protein – replaced with soya
- 240 kg : 40 x 100 = 600 kg soya (per ha GL)
- 600 kg soya x 0.65 € = € 390.00 (per ha GL)
Energy loss – replaced with wheat
- 9000 MJ/ha – 4400 MJ/ha (from soya) = 4600 MJ/ha
- 4600 MJ : 7 MJ/1 kg wheat = approx. 600 kg wheat
- 650 kg wheat x € 0.36 = € 234.00 (per ha GL)
Total energy and protein loss
with 1 dock/m² (or 15% gaps)
- 600 kg soya x € 0.65 = € 390.00
- 650 kg wheat x € 0.36 = € 234.00
- per ha of grassland = € 624.00
with 0.5 docks/m² (damage threshold) = € 312.00 loss per ha of grassland
On average, meadows have at least 30% gaps or other lower-quality grasses: Approx. € 1 250.00 loss per ha of grassland
Meadow maintenance with the Einböck PNEUMATICSTAR
- Working speed 8-10 km/h = up to 6 ha/h
- Minus turning, filling and start-up time = 4 ha/h
- PNEUMATICSTAR grassland seeder = € 15.00/ha
- Tractor and driver = € 15.00/ha
- Seeds 8 kg – 10 kg per year = € 50.00/ha
- Maintenance costs per year = € 80.00/ha
This calculation is a practical example and requires explicit adjustment or individual calculation to the respective farm. Einböck assumes noresponsibility for the correctness and completeness of the respective calculation. Market prices spring 2022
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