Replicate plot | CS (area-%) | CV (area-%) | CSZ (area-%) |
---|---|---|---|
1 | 20 | 140 | 14.3 |
2 | 25 | 110 | 22.7 |
3 | 20 | 125 | 16.0 |
4 | 25 | 115 | 21.7 |
Average | 22.5 | 121.3 | 18.7 |
Method | Recordable parameters | Properties and requirements | |||||||
---|---|---|---|---|---|---|---|---|---|
Density | Cover | Yield proportion | Frequency | Accuracy/Repeatability | Subjectivity | Time effort | Need for special devices | Dependency on weather conditions | |
Visual estimation | x | x | +* | ++++ | +** | - | + | ||
Counting frame | x | +++ | + | + | + | + | |||
Frequency frame | x | ++ | + | ++ | + | + | |||
Linear analysis | x | x | ++ | + | +++ | + | + | ||
Point intercept | x | x | x | ++ | + | +++ | ++ | ++ | |
Manual separation | x | +++ | + | ++++ | + | - | |||
Photography*** | (x) | x | x | +++ | - | + | +++ | +++ | |
Spectrometry**** | +++ | - | + | ++++ | ++++ |
Species | Yield proportion (%) | Cover (%) |
---|---|---|
Common reed ( | 5 | |
Canary grass ( | 20 | 5 |
Tall fescue ( | 18 | 10 |
Bent grass ( | 17 | |
15 other species | 20 | 15 |
total | 100 | 100 |
grassland type | = Phragmitetum | = Agrostietum |
Sward type | Rich in grasses | Balanced | Rich in forbs | Rich in legumes |
---|---|---|---|---|
Yield potential | ++ | + | + | - |
Crude protein potential | - | + | + | ++ |
Forage quality stability along phenological development at the first cut | - | + | + | ++ |
Easiness of silage conservation | ++ | + | - | - |
Drying speed | ++ | + | - a | + |
Risk of crumbling losses | - | - | + | + |
Risk of contamination with soil | - | - | + | +/++ |