PLPotatoes.cpp

Go to the documentation of this file.

/*
*******************************************************************************************************
Copyright (c) 2017, Christopher John Topping, Aarhus University
All rights reserved.
 
Redistribution and use in source and binary forms, with or without modification, are permitted provided
that the following conditions are met:
 
Redistributions of source code must retain the above copyright notice, this list of conditions and the
following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
the following disclaimer in the documentation and/or other materials provided with the distribution.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
********************************************************************************************************
*/
//
// PLPotatoes.cpp
//
 
 
#include "../../Landscape/ls.h"
#include "../../Landscape/cropprogs/PLPotatoes.h"
 
// Some things that are defined externally - in this case these variables allow
// scaling of the percentage application figures for insecticides, herbicides etc..
extern CfgBool cfg_pest_potatoes_on;
// check if below are needed
extern CfgFloat l_pest_insecticide_amount;
extern CfgInt   cfg_POT_InsecticideDay;
extern CfgInt   cfg_POT_InsecticideMonth;
extern CfgFloat cfg_pest_product_1_amount;
 
 
bool PLPotatoes::Do(Farm *a_farm, LE *a_field, FarmEvent *a_ev)
{
    bool done = false; // The boolean value done indicates when we are totally finished with this plan (i.e. it is set to true).
    int d1 = 0;
    // Depending what event has occured jump to the correct bit of code
    switch (a_ev->m_todo)
    {
    case pl_pot_start:
    {
        // pl_pot_start just sets up all the starting conditions and reference dates that are needed to start a pl_pot
        PL_POT_FERTI_P1 = false;
        PL_POT_FERTI_S1 = false;
        PL_POT_STUBBLE_PLOUGH = false;
        PL_POT_DID_STRIG1 = false;
        PL_POT_DID_STRIG2 = false;
        PL_POT_DID_STRIG3 = false;
        PL_POT_HILL_DATE = 0;
        PL_POT_DID_HILL = false;
        PL_POT_DID_DESS = false;
 
        // Set up the date management stuff
        // The next bit of code just allows for altering dates after harvest if it is necessary
        // to allow for a crop which starts its management early.
 
        // 2 start and stop dates for all 'movable' events for this crop
        int noDates = 2;
        a_field->SetMDates(0, 0, g_date->DayInYear(25, 9)); // last possible day of harvest
        a_field->SetMDates(1, 0, g_date->DayInYear(5, 10)); // end day of calcium application
        a_field->SetMDates(0, 1, 0);
        a_field->SetMDates(1, 1, g_date->DayInYear(5, 10)); 
 
        a_field->SetMConstants(0, 1);
 
        // Check the next crop for early start, unless it is a spring crop
        // in which case we ASSUME that no checking is necessary!!!!
        // So DO NOT implement a crop that runs over the year boundary (i.e. from spring to spring!), at least not without fixing this.
 
        //new if: do the check only for non-optimising farms and if year>0. (030713 - m_rotation used only in the hidden year, so I modified the condition from >7 to >0)
        //optimising farms not used for now so most of related code is removed (but not in 'start' case)
        if (!(a_farm->GetType() == tof_OptimisingFarm && g_date->GetYearNumber() > 0)) {
 
            if (a_ev->m_startday > g_date->DayInYear(1, 7)) {
                if (a_field->GetMDates(0, 0) >= a_ev->m_startday)
                {
                    g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): ", "Harvest too late for the next crop to start!!!");
                    int almassnum = g_landscape_p->BackTranslateVegTypes(a_ev->m_next_tov);
                    g_msg->Warn("Next Crop ", (double)almassnum); // this causes exit
                }
                // Now fix any late finishing problems
                for (int i = 0; i < noDates; i++) {
                    if (a_field->GetMDates(0, i) >= a_ev->m_startday) {
                        a_field->SetMDates(0, i, a_ev->m_startday - 1); //move the starting date
                    }
                    if (a_field->GetMDates(1, i) >= a_ev->m_startday) {
                        a_field->SetMConstants(i, 0); //change the default value of the MConst (=1) to 0 (necessary to correctly execute farm events in case the finishing date (MDate) was moved)
                        a_field->SetMDates(1, i, a_ev->m_startday - 1); //move the finishing date
                    }
                }
            }
            // Now no operations can be timed after the start of the next crop.
 
            if (!a_ev->m_first_year) {
                // Are we before July 1st?
                d1 = g_date->OldDays() + g_date->DayInYear(1, 7);
                if (g_date->Date() < d1) {
                    // Yes, too early. We assumme this is because the last crop was late
                    printf("Poly: %d\n", a_field->GetPoly());
                    g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): ", "Crop start attempt between 1st Jan & 1st July");
                    int prev = g_landscape_p->BackTranslateVegTypes(a_field->GetOwner()->GetPreviousCrop(a_field->GetRotIndex()));
                    g_msg->Warn(WARN_BUG, "Previous Crop ", prev);
                    int almassnum = g_landscape_p->BackTranslateVegTypes(a_ev->m_next_tov);
                    g_msg->Warn("Next Crop ", (double)almassnum); // this causes exit
                }
                else {
                    d1 = g_date->OldDays() + m_first_date; // Add 365 for spring crop
                    if (g_date->Date() > d1) {
                        // Yes too late - should not happen - raise an error
                        g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): ", "Crop start attempt after last possible start date");
                        g_msg->Warn(WARN_BUG, "Previous Crop ", "");
                        a_field->GetOwner()->GetPreviousCrop(a_field->GetRotIndex());
                        int almassnum = g_landscape_p->BackTranslateVegTypes(a_ev->m_next_tov);
                        g_msg->Warn("Next Crop ", (double)almassnum); // this causes exit
                    }
                }
            }
            else {
                // Is the first year
                // Some special code to cope with that first start-up year in ALMaSS - ignore for all practical purposes
                // Code for first spring treatment used
                SimpleEvent_(g_date->OldDays() + g_date->DayInYear(20, 3), pl_pot_spring_harrow, false, a_farm, a_field);
                break;
            }
        }//if
 
         // End single block date checking code. Please see next line comment as well.
         // Reinit d1 to first possible starting date.
        d1 = g_date->OldDays() + g_date->DayInYear(20, 7);
        // OK, let's go.
        // Here we queue up the first event - this differs depending on whether we have a
        // stock or arable farmer
        if (a_farm->IsStockFarmer()) { // StockFarmer
            SimpleEvent_(d1, pl_pot_ferti_s1, false, a_farm, a_field);
        }
        else SimpleEvent_(d1, pl_pot_ferti_p1, false, a_farm, a_field);
    }
    break;
 
    // This is the first real farm operation
    case pl_pot_ferti_p1:
        // In total 10% of arable farmers do slurry in the autumn, either before stubble plough/harrow or later before autumn plough/cultivation
        // We therefore assume that half of them (5%) do it now
        if (a_ev->m_lock || a_farm->DoIt(5))
        {
            if (!a_farm->FP_Slurry(a_field, 0.0, g_date->DayInYear(5, 11) - g_date->DayInYear())) {
                // If we don't suceed on the first try, then try and try again (until 20/8 when we will suceed)
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p1, true, a_farm, a_field);
                break;
            }
            else
            {
                //Rest of farmers do slurry before autumn plough/stubble cultivation so we need to remeber who already did it
                PL_POT_FERTI_P1 = true;
            }
        }
        // Queue up the next event -in this case stubble ploughing
        SimpleEvent_(g_date->Date() + 1, pl_pot_stubble_plough, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s1:
        // In total 40% of stock farmers do slurry in the autumn, either before stubble plough/harrow or later before autumn plough/cultivation
        // We therefore assume that half of them (40%) do it now
        if (a_ev->m_lock || a_farm->DoIt(40))
        {
            if (!a_farm->FA_Slurry(a_field, 0.0, g_date->DayInYear(5, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s1, true, a_farm, a_field);
                break;
            }
            else
            {
                //Rest of farmers do slurry before autumn plough/stubble cultivation so we need to remeber who already did it
                PL_POT_FERTI_S1 = true;
            }
        }
        // Queue up the next event -in this case stubble ploughing
        SimpleEvent_(g_date->Date() + 1, pl_pot_stubble_plough, false, a_farm, a_field);
        break;
    case pl_pot_stubble_plough:
        // 65% will do stubble plough, but rest will get away with non-inversion cultivation
        if (a_ev->m_lock || a_farm->DoIt(65))
        {
            if (!a_farm->StubblePlough(a_field, 0.0, g_date->DayInYear(5, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_stubble_plough, true, a_farm, a_field);
                break;
            }
            else
            {
                // 50% of farmers will do this, but the other 50% won't so we need to remember whether we are in one or the other group
                PL_POT_STUBBLE_PLOUGH = true;
                // Queue up the next event
                SimpleEvent_(g_date->Date() + 1, pl_pot_autumn_harrow1, false, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_stubble_harrow, false, a_farm, a_field);
        break;
    case pl_pot_autumn_harrow1:
        if (!a_farm->AutumnHarrow(a_field, 0.0, g_date->DayInYear(5, 11) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_autumn_harrow1, true, a_farm, a_field);
            break;
        }
        SimpleEvent_(g_date->Date() + 2, pl_pot_autumn_harrow2, false, a_farm, a_field);
        break;
    case pl_pot_autumn_harrow2:
        if (a_ev->m_lock || a_farm->DoIt(40))
        {
            if (!a_farm->AutumnHarrow(a_field, 0.0, g_date->Date() + 7 - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_autumn_harrow2, true, a_farm, a_field);
                break;
            }
        }
        d1 = g_date->Date() + 1;
        if (d1 < g_date->OldDays() + g_date->DayInYear(10, 9)) {
            d1 = g_date->OldDays() + g_date->DayInYear(10, 9);
        }
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(d1, pl_pot_ferti_s2, false, a_farm, a_field);
        }
        else SimpleEvent_(d1, pl_pot_ferti_p2, false, a_farm, a_field);
        break;
    case pl_pot_stubble_harrow:
        if (!a_farm->StubbleHarrowing(a_field, 0.0, g_date->DayInYear(10, 11) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_stubble_harrow, true, a_farm, a_field);
            break;
        }
        d1 = g_date->Date() + 1;
        if (d1 < g_date->OldDays() + g_date->DayInYear(10, 9)) {
            d1 = g_date->OldDays() + g_date->DayInYear(10, 9);
        }
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(d1, pl_pot_ferti_s2, false, a_farm, a_field);
        }
        else SimpleEvent_(d1, pl_pot_ferti_p2, false, a_farm, a_field);
        break;
    case pl_pot_ferti_p2:
        // In total 10% of arable farmers do slurry in the autumn, either before stubble plough/harrow or later before autumn plough/cultivation
        // We therefore assume that half of them (5%) do it now (if haven't done before)
        if ((a_ev->m_lock || a_farm->DoIt(static_cast<int>((5.0 / 95.0) * 100))) && (PL_POT_FERTI_P1 == false))
        {
            if (!a_farm->FP_Slurry(a_field, 0.0, g_date->DayInYear(15, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p2, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p3, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s2:
        // In total 80% of stock farmers do slurry in the autumn, either before stubble plough/harrow or later before autumn plough/cultivation
        // We therefore assume that half of them (40%) do it now (if haven't done before)
        if ((a_ev->m_lock || a_farm->DoIt(static_cast<int>((40.0 / 60.0) * 100))) && (PL_POT_FERTI_S1 == false))
        {
            if (!a_farm->FA_Slurry(a_field, 0.0, g_date->DayInYear(15, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s2, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s3, false, a_farm, a_field);
        break;
    case pl_pot_ferti_p3:
        if (a_ev->m_lock || a_farm->DoIt(7))
        {
            if (!a_farm->FP_NPKS(a_field, 0.0, g_date->DayInYear(15, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p3, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_winter_plough, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s3:
        if (a_ev->m_lock || a_farm->DoIt(7))
        {
            if (!a_farm->FA_NPKS(a_field, 0.0, g_date->DayInYear(15, 11) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s3, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_winter_plough, false, a_farm, a_field);
        break;
    case pl_pot_winter_plough:
        if (!a_farm->WinterPlough(a_field, 0.0, g_date->DayInYear(15, 11) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_winter_plough, true, a_farm, a_field);
            break;
        }
 
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(20, 3) + 365, pl_pot_spring_harrow, false, a_farm, a_field);
        break;
    case pl_pot_spring_harrow:
        if ((a_ev->m_lock) || a_farm->DoIt(98))
        {
            if (!a_farm->SpringHarrow(a_field, 0.0, g_date->DayInYear(10, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_spring_harrow, true, a_farm, a_field);
                break;
            }
        }
        d1 = g_date->Date() + 1;
        if (d1 < g_date->OldDays() + g_date->DayInYear(1, 4)) {
            d1 = g_date->OldDays() + g_date->DayInYear(1, 4);
        }
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(d1, pl_pot_ferti_s4, false, a_farm, a_field);
        }
        else SimpleEvent_(d1, pl_pot_ferti_p4, false, a_farm, a_field);
        break;
    case pl_pot_ferti_p4:
        if (a_ev->m_lock || a_farm->DoIt(80))
        {
            if (!a_farm->FP_AmmoniumSulphate(a_field, 0.0, g_date->DayInYear(20, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p4, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_spring_harrow2, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s4:
        if (a_ev->m_lock || a_farm->DoIt(80))
        {
            if (!a_farm->FA_AmmoniumSulphate(a_field, 0.0, g_date->DayInYear(20, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s4, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_spring_harrow2, false, a_farm, a_field);
        break;
    case pl_pot_spring_harrow2:
        if ((a_ev->m_lock) || a_farm->DoIt(22))
        {
            if (!a_farm->SpringHarrow(a_field, 0.0, g_date->DayInYear(20, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_spring_harrow2, true, a_farm, a_field);
                break;
            }
        }
        d1 = g_date->Date() + 1;
        if (d1 < g_date->OldDays() + g_date->DayInYear(5, 4)) {
            d1 = g_date->OldDays() + g_date->DayInYear(5, 4);
        }
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(d1, pl_pot_ferti_s5, false, a_farm, a_field);
        }
        else SimpleEvent_(d1, pl_pot_ferti_p5, false, a_farm, a_field);
        break;
    case pl_pot_ferti_p5:
        if (a_ev->m_lock || a_farm->DoIt(70))
        {
            if (!a_farm->FP_PK(a_field, 0.0, g_date->DayInYear(25, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p5, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_spring_plough, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s5:
        if (a_ev->m_lock || a_farm->DoIt(70))
        {
            if (!a_farm->FA_PK(a_field, 0.0, g_date->DayInYear(25, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s5, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_spring_plough, false, a_farm, a_field);
        break;
    case pl_pot_spring_plough:
        if (a_ev->m_lock || a_farm->DoIt(92))
        {
            if (!a_farm->SpringPlough(a_field, 0.0, g_date->DayInYear(25, 4) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_spring_plough, true, a_farm, a_field);
                break;
            }
        }
        d1 = g_date->Date() + 7;
        if (d1 < g_date->OldDays() + g_date->DayInYear(20, 4)) {
            d1 = g_date->OldDays() + g_date->DayInYear(20, 4);
        }
        SimpleEvent_(d1, pl_pot_bed_forming, false, a_farm, a_field);
        break;
    case pl_pot_bed_forming:
        if (!a_farm->PreseedingCultivator(a_field, 0.0, g_date->DayInYear(5, 5) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_bed_forming, true, a_farm, a_field);
            break;
        }
        SimpleEvent_(g_date->Date(), pl_pot_spring_planting, false, a_farm, a_field);
        break;
    case pl_pot_spring_planting:
        if (!a_farm->SpringSow(a_field, 0.0, g_date->DayInYear(5, 5) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_spring_planting, true, a_farm, a_field);
            break;
        }
        // Fork of events
        SimpleEvent_(g_date->Date() + 2, pl_pot_hilling1, false, a_farm, a_field); // Strigling followed by hilling and herbicides
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s6, false, a_farm, a_field);  // N before emergence
        }
        else SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p6, false, a_farm, a_field);
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(10, 6), pl_pot_fungicide1, false, a_farm, a_field); // Fungicide treat = MAIN TREAT
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(10, 6), pl_pot_insecticide, false, a_farm, a_field); // Insecticide treat
        break;
    case pl_pot_hilling1:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || a_farm->DoIt(90))
            {
                if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(20, 5) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_hilling1, true, a_farm, a_field);
                    break;
                }
                // 90% of farmers remove weeds with strigling (and hilling), the rest will do herbicide
                PL_POT_DID_STRIG1 = true;
                // Queue up the second strigling_hill event after 7 days
                SimpleEvent_(g_date->Date() + 5, pl_pot_hilling2, false, a_farm, a_field);
                break;
            }
            else {
                SimpleEvent_(g_date->Date(), pl_pot_herbicide1, false, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, false, a_farm, a_field);
        break;
    case pl_pot_hilling2:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || (a_farm->DoIt(81) && PL_POT_DID_STRIG1)) // which gives 73% of all farmers
            {
                if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(25, 5) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_hilling2, true, a_farm, a_field);
                    break;
                }
                // 81% of farmers do strigling_hill second time, the rest will end up with herbicide
                PL_POT_DID_STRIG2 = true;
                // Queue up the third strigling_hill event after 7 days
                SimpleEvent_(g_date->Date() + 5, pl_pot_hilling3, false, a_farm, a_field);
                break;
            }
            else {
                SimpleEvent_(g_date->Date(), pl_pot_herbicide1, false, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, false, a_farm, a_field);
        break;
    case pl_pot_hilling3:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || (a_farm->DoIt(73) && PL_POT_DID_STRIG2)) // which gives 53% of all farmers
            {
                if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(31, 5) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_hilling3, true, a_farm, a_field);
                    break;
                }
                // 73% of farmers do strigling_hill third time, the rest will end up with herbicide. 
                PL_POT_DID_STRIG3 = true;
            }
            else {
                SimpleEvent_(g_date->Date()+3, pl_pot_herbicide1, false, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, false, a_farm, a_field);
        break;
    case pl_pot_herbicide1:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || a_farm->DoIt(93))
            {
                if (!a_farm->HerbicideTreat(a_field, 0.0, g_date->DayInYear(5, 6) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_herbicide1, true, a_farm, a_field);
                    break;
                }
            }
            SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, false, a_farm, a_field);
            break;
        }
        SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, false, a_farm, a_field);
        break;
    case pl_pot_hilling4:
        if (a_ev->m_lock || a_farm->DoIt(38))
        {
            if (a_field->GetGreenBiomass() <= 0) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, true, a_farm, a_field);
            }
            else
            {
                if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(10, 6) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_hilling4, true, a_farm, a_field);
                    break;
                }
                PL_POT_HILL_DATE = g_date->Date();
                SimpleEvent_(g_date->Date() + 7, pl_pot_hilling5, false, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 3, pl_pot_herbicide2, false, a_farm, a_field);
        break;
    case pl_pot_hilling5:
        if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(15, 6) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_hilling5, true, a_farm, a_field);
            break;
        }
        PL_POT_HILL_DATE = g_date->Date();
        SimpleEvent_(g_date->Date() + 7, pl_pot_hilling6, false, a_farm, a_field);
        break;
    case pl_pot_hilling6:
        if (!a_farm->HillingUp(a_field, 0.0, g_date->DayInYear(20, 6) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_hilling6, true, a_farm, a_field);
            break;
        }
        PL_POT_HILL_DATE = g_date->Date();
        PL_POT_DID_HILL = true;
        
        SimpleEvent_(g_date->Date() + 7, pl_pot_herbicide2, false, a_farm, a_field);
        break;
    case pl_pot_herbicide2:
        if (a_ev->m_lock || a_farm->DoIt(40))
        {
            if (!a_farm->HerbicideTreat(a_field, 0.0, g_date->DayInYear(30, 6) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_herbicide2, true, a_farm, a_field);
                break;
            }
        }
        // End of thread
        break;
    case pl_pot_ferti_s6:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || a_farm->DoIt(80))
            {
                if (!a_farm->FA_AmmoniumSulphate(a_field, 0.0, g_date->DayInYear(31, 5) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s6, true, a_farm, a_field);
                    break;
                }
            }
            SimpleEvent_(g_date->OldDays() + g_date->DayInYear(15, 6), pl_pot_ferti_s7, false, a_farm, a_field);
            break;
        }
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(15, 6), pl_pot_ferti_s7, false, a_farm, a_field);
        break;
 
    case pl_pot_ferti_p6:
        if (a_field->GetGreenBiomass() <= 0)
        {
            if (a_ev->m_lock || a_farm->DoIt(80))
            {
                if (!a_farm->FP_AmmoniumSulphate(a_field, 0.0, g_date->DayInYear(31, 5) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p6, true, a_farm, a_field);
                    break;
                }
            }
            SimpleEvent_(g_date->OldDays() + g_date->DayInYear(15, 6), pl_pot_ferti_p7, false, a_farm, a_field);
            break;
        }
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(15, 6), pl_pot_ferti_p7, false, a_farm, a_field);
        break;
    case pl_pot_ferti_s7:
        if (a_ev->m_lock || a_farm->DoIt(53))
        {
            if (PL_POT_HILL_DATE >= g_date->Date() - 2){ // Should by at least 3 days after hilling
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s7, false, a_farm, a_field); }
            else
            {
                if (!a_farm->FA_ManganeseSulphate(a_field, 0.0, g_date->DayInYear(15, 7) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s7, true, a_farm, a_field);
                    break;
                }
            }
        }
        // End of thread
        break;
    case pl_pot_ferti_p7:
        if (a_ev->m_lock || a_farm->DoIt(53))
        {
            if (PL_POT_HILL_DATE >= g_date->Date() - 2) { // Should by at least 3 days after hilling
                SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p7, false, a_farm, a_field);
            }
            else
            {
                if (!a_farm->FP_ManganeseSulphate(a_field, 0.0, g_date->DayInYear(15, 7) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p7, true, a_farm, a_field);
                    break;
                }
            }
        }
        // End of thread
        break;
    case pl_pot_fungicide1:
        // Here comes the fungicide thread = MAIN THREAD
        if (PL_POT_HILL_DATE >= g_date->Date() - 2) { // Should by at least 3 days after hilling
            SimpleEvent_(g_date->Date() + 1, pl_pot_fungicide1, true, a_farm, a_field);
        }
        else
        {
            if (a_ev->m_lock || a_farm->DoIt(78))
            {
                if (!a_farm->FungicideTreat(a_field, 0.0, g_date->DayInYear(31, 7) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_fungicide1, true, a_farm, a_field);
                    break;
                }
            }
            SimpleEvent_(g_date->Date() + 10, pl_pot_fungicide2, false, a_farm, a_field);
            break;
        }
        break;
    case pl_pot_fungicide2:
        if (a_ev->m_lock || a_farm->DoIt(63))
        {
            if (!a_farm->FungicideTreat(a_field, 0.0, g_date->DayInYear(10, 8) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_fungicide2, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 10, pl_pot_fungicide3, false, a_farm, a_field);
        break;
    case pl_pot_fungicide3:
        if (a_ev->m_lock || a_farm->DoIt(63))
        {
            if (!a_farm->FungicideTreat(a_field, 0.0, g_date->DayInYear(20, 8) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_fungicide3, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 10, pl_pot_fungicide4, false, a_farm, a_field);
        break;
    case pl_pot_fungicide4:
        if (a_ev->m_lock || a_farm->DoIt(38))
        {
            if (!a_farm->FungicideTreat(a_field, 0.0, g_date->DayInYear(20, 8) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_fungicide4, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->OldDays() + g_date->DayInYear(25, 8), pl_pot_dessication1, false, a_farm, a_field);
        break;
    case pl_pot_insecticide:
        if (a_ev->m_lock || a_farm->DoIt(75))
        {
            if (PL_POT_HILL_DATE >= g_date->Date() - 2) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_insecticide, false, a_farm, a_field);
            }
            else
            {
                // here we check wheter we are using ERA pesticide or not
                if (!cfg_pest_potatoes_on.value() ||
                    !g_landscape_p->SupplyShouldSpray()) // Not using pesticide spray
                {
                    if (!a_farm->InsecticideTreat(a_field, 0.0, g_date->DayInYear(20, 7) - g_date->DayInYear())) {
                        SimpleEvent_(g_date->Date() + 1, pl_pot_insecticide, true, a_farm, a_field);
                        break;
                    }
                }
                else {
                    a_farm->ProductApplication(a_field, 0.0, 0, cfg_pest_product_1_amount.value(), ppp_1);
                }
            }
        }
        // End of thread
        break;
    case pl_pot_dessication1:
        // Here the MAIN thread continues
        // This is the desiccation thread with glyphosate or diquat
        if (a_ev->m_lock || a_farm->DoIt(35))
        {
            if (!a_farm->HerbicideTreat(a_field, 0.0, g_date->DayInYear(10, 9) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_dessication1, true, a_farm, a_field);
                break;
            }
            PL_POT_DID_DESS = true;
        }
        SimpleEvent_(g_date->Date() + 7, pl_pot_dessication2, false, a_farm, a_field);
        break;
    case pl_pot_dessication2:
        if (a_ev->m_lock || (a_farm->DoIt(17) && PL_POT_DID_DESS)) //which is 6% of all farmers
        {
            if (!a_farm->HerbicideTreat(a_field, 0.0, g_date->DayInYear(15, 9) - g_date->DayInYear())) {
                SimpleEvent_(g_date->Date() + 1, pl_pot_dessication2, true, a_farm, a_field);
                break;
            }
        }
        SimpleEvent_(g_date->Date() + 14, pl_pot_harvest, false, a_farm, a_field);
        break;
    case pl_pot_harvest:
        // We don't move harvest days
        if (!a_farm->Harvest(a_field, 0.0, a_field->GetMDates(0, 0) - g_date->DayInYear())) {
            SimpleEvent_(g_date->Date() + 1, pl_pot_harvest, true, a_farm, a_field);
            break;
        }
        if (a_farm->IsStockFarmer()) //Stock Farmer
        {
            SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s8, false, a_farm, a_field);
        }
        else SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p8, false, a_farm, a_field);
        break;
    case pl_pot_ferti_p8:
        if (a_ev->m_lock || a_farm->DoIt(23))
        {
            if (a_field->GetMConstants(3) == 0) {
                if (!a_farm->FP_Calcium(a_field, 0.0, -1)) { // raise an error
                    g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): failure in 'FP_Calcium' execution", "");
                    exit(1);
                }
            }
            else {
                if (!a_farm->FP_Calcium(a_field, 0.0, a_field->GetMDates(1, 0) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_p8, true, a_farm, a_field);
                    break;
                }
            }
        }
        done = true;
        // So we are done, and somwhere else the farmer will queue up the start event of the next crop
        // END of MAIN THREAD
        break;
    case pl_pot_ferti_s8:
        if (a_ev->m_lock || a_farm->DoIt(23))
        {
            if (a_field->GetMConstants(3) == 0) {
                if (!a_farm->FA_Calcium(a_field, 0.0, -1)) { // raise an error
                    g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): failure in 'FA_Calcium' execution", "");
                    exit(1);
                }
            }
            else {
                if (!a_farm->FA_Calcium(a_field, 0.0, a_field->GetMDates(1, 0) - g_date->DayInYear())) {
                    SimpleEvent_(g_date->Date() + 1, pl_pot_ferti_s8, true, a_farm, a_field);
                    break;
                }
            }
        }
        done = true;
        // So we are done, and somwhere else the farmer will queue up the start event of the next crop
        // END of MAIN THREAD
        break;
    default:
        g_msg->Warn(WARN_BUG, "PLPotatoes::Do(): "
            "Unknown event type! ", "");
        exit(1);
    }
    return done;
}