| Purpose of this facility |
Grazed grass on N leaching |
| Lysimeter type |
NON-WEIGHABLE MONOLITHIC GRAVITATION LYSIMETER |
| Operating since |
2004 |
| Number of lysimeters |
75 |
| Size classification |
small |
| Exact size |
0.4 x 0.4 x 0.95 m |
| Building material of container |
HDPE high density polyethylene |
| Material/feature of lysimeter bottom |
HDPE |
| Seepage water determination |
Gravimetric; drain pipe |
| Nutrients/nutrient balances |
NO3-N, NH4-N, P, DOC, Cl, K, Na, Ca, Mg; N inputs and
N outputs including N2O balances |
| Measuring interval(s) of substances |
weekly to fortnightly |
| Soil fraction(s) |
Varying from clay to sandy loams |
| Soil type |
3 types |
| Vegetation |
Herbage |
| Probes installed |
Considering installing TDR sensors |
| Used model/goal of investigation |
trying to develop a model on nitrate leaching from grazing
under simulated and actual grazing |
| Further investigations or equipment |
N2O emissions using chambers; 6 hydrologically isolated
fields with subsurface flow collection at 1 m below ground;
we also measure all overland flow |
| Mean annual precipitation in mm |
900 |
| Used fertilizer/manure |
Fertilizer and urine |
| Amount of fertilizer(s) used in kg/ha |
up to 350 kg N/ha plus ~400 kg as urine |
| Fertilization period |
February to September |
| Meteorological parameters |
Temperature, precipitation, relative humidity, atmospheric
pressure; evaporation pan existing |
| Evaporation determination (formula) |
FAO PENMAN-MONTEITH |
| Year of survey |
2004 |
