/// <summary>Perform grazing</summary>
/// <param name="amountDMToRemove">The amount of biomas to remove (kg/ha).</param>
public void Graze(double amountDMToRemove)
{
GrazingInterval = DaysSinceGraze; // i.e. yesterday's value
DaysSinceGraze = 0;
RemoveDMFromPlants(amountDMToRemove);
AddUrineToSoil();
AddDungToSurface();
// Calculate post-grazed dry matter.
PostGrazeDM = forages.Sum(forage => forage.AboveGround.Wt);
// Calculate proportions of each species to the total biomass.
for (int i = 0; i < forages.Count; i++)
{
var proportionToTotalDM = MathUtilities.Divide(forages[i].AboveGround.Wt, PostGrazeDM, 0);
ProportionOfTotalDM[i] = proportionToTotalDM;
}
if (Verbose)
{
summary.WriteMessage(this, string.Format("Grazed {0:0.0} kgDM/ha, N content {1:0.0} kgN/ha, ME {2:0.0} MJME/ha", GrazedDM, GrazedN, GrazedME));
}
// Invoke grazed event.
Grazed?.Invoke(this, new EventArgs());
}
/// <summary>Perform grazing</summary>
/// <param name="amountDMToRemove">The amount of biomas to remove (kg/ha).</param>
public void Graze(double amountDMToRemove)
{
GrazingInterval = DaysSinceGraze; // i.e. yesterday's value
DaysSinceGraze = 0;
RemoveDMFromPlants(amountDMToRemove);
AddUrineToSoil();
AddDungToSurface();
// Calculate post-grazed dry matter.
PostGrazeDM = 0.0;
foreach (var forage in allForages)
{
PostGrazeDM += forage.Material.Sum(m => m.Total.Wt);
}
// Calculate proportions of each species to the total biomass.
for (int i = 0; i < allForages.Count; i++)
{
var proportionToTotalDM = MathUtilities.Divide(allForages[i].Material.Sum(m => m.Total.Wt), PostGrazeDM, 0);
ProportionOfTotalDM[i] = proportionToTotalDM;
}
summary.WriteMessage(this, string.Format("Grazed {0:0.0} kgDM/ha, N content {1:0.0} kgN/ha, ME {2:0.0} MJME/ha", GrazedDM, GrazedN, GrazedME));
// Reduce plant population if necessary.
if (FractionPopulationDecline > 0)
{
foreach (var forage in allForages)
{
if ((forage as IModel) is IHasPopulationReducer populationReducer)
{
populationReducer.ReducePopulation(populationReducer.Population * (1.0 - FractionPopulationDecline));
}
else
{
throw new Exception($"Model {forage.Name} is unable to reduce its population due to grazing. Not implemented.");
}
}
}
// Convert PostGrazeDM to kg/ha
PostGrazeDM *= 10;
// Invoke grazed event.
Grazed?.Invoke(this, new EventArgs());
}
/// <summary>Perform grazing</summary>
/// <param name="amountDMToRemove">The amount of biomas to remove (kg/ha).</param>
public void Graze(double amountDMToRemove)
{
GrazingInterval = DaysSinceGraze; // i.e. yesterday's value
DaysSinceGraze = 0;
RemoveDMFromPlants(amountDMToRemove);
AddUrineToSoil();
AddDungToSurface();
if (Verbose)
{
summary.WriteMessage(this, string.Format("Grazed {0:0.0} kgDM/ha, N content {1:0.0} kgN/ha, ME {2:0.0} MJME/ha", GrazedDM, GrazedN, GrazedME));
}
// Invoke grazed event.
Grazed?.Invoke(this, new EventArgs());
}
/// <summary>Perform grazing</summary>
/// <param name="amountDMToRemove">The amount of biomas to remove (kg/ha).</param>
public void Graze(double amountDMToRemove)
{
GrazingInterval = DaysSinceGraze; // i.e. yesterday's value
DaysSinceGraze = 0;
RemoveDMFromPlants(amountDMToRemove);
AddUrineToSoil();
AddDungToSurface();
// Calculate post-grazed dry matter.
PostGrazeDM = forages.Sum(forage => forage.AboveGround.Wt);
// Calculate proportions of each species to the total biomass.
for (int i = 0; i < forages.Count; i++)
{
var proportionToTotalDM = MathUtilities.Divide(forages[i].AboveGround.Wt, PostGrazeDM, 0);
ProportionOfTotalDM[i] = proportionToTotalDM;
}
summary.WriteMessage(this, string.Format("Grazed {0:0.0} kgDM/ha, N content {1:0.0} kgN/ha, ME {2:0.0} MJME/ha", GrazedDM, GrazedN, GrazedME));
// Reduce plant population if necessary.
if (FractionPopulationDecline > 0)
{
foreach (var forage in forages)
{
forage.ReducePopulation(forage.Population * (1.0 - FractionPopulationDecline));
}
}
// Convert PostGrazeDM to kg/ha
PostGrazeDM *= 10;
// Invoke grazed event.
Grazed?.Invoke(this, new EventArgs());
}