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sector:agriculture:start [2021/12/23 07:53] – [Mitigation measures] doeringsector:agriculture:start [2021/12/23 07:59] – [Reasons for recalculations] doering
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-===== Recalculations and reasons =====+===== Reasons for recalculations =====
  
  
 (see [[general:recalculations:start|Chapter 8.1 - Recalculations]]) (see [[general:recalculations:start|Chapter 8.1 - Recalculations]])
  
-The following list summarizes, the most important reasons for recalculations. Recalculations result from improvements in input data and methodologies (for details see Rösemann et al. (2021), Chapter 3.5.2).+The following list summarizes the most important reasons for recalculations. Recalculations result from improvements in input data and methodologies (for details see Vos et al. (2022), Chapter 3.5.2). 
  
-1) Dairy cows and calves: Adjustment of initial weight, energy requirements and feeding according to German expert recommendations; correction of the calculation of the TAN excretion of dairy cows.+1) Incorporation of data from the 2020 official agricultural census. This changes data on housing systems, manure storage systems, manure application systems and cattle grazing. This results in some significant changes in the calculated emissions as far back as the year 2000 compared to the previous year's submission.
  
-2) Heifers: Subdivision into dairy and slaughter heifers with different final weights; adaptation of energy requirements and feeding according to German expert recommendations.+2) Dairy cows: Update of milk yield and slaughter weight for the year 2019. 
  
-3) Male beef cattle: Adjustment of feeding according to German expert recommendations; correction of the calculation of the TAN flow into manure storage.+3) Heifers: Minor changes in the nutrient content of some feed ingredients.
  
-4) Male cattle > 2 years: update (increase) of the amount of bedding material (straw).+4) Suckler cows: modeling of the energy requirement and feed intake has been updated and adapted based on the dairy cow model.
  
-5) Cattle grazing: The NH<sub>3</sub> emission factors were updated according to EMEP (2019).+5) Male cattle > 2 years: Update of weights from 1999 onwards.
  
-6) Sows: Update of the number of piglets per sow in 2018.+6) Sows: Update of the number of piglets per sow in 2019. 
  
-7) Fattening pigs and weaners: Update of animal numbers, starting weights and final weights for 2018.+7) Fattening pigs: New data on raw protein content, ash content and digestibility of feed from 1990 onwards. 
  
-8) All pigs except boars: Update of activity data of air scrubbing systems in pig housings from 2005 onwards. +8) Broilers: New data on raw protein content, ash content and digestibility of feed from 2000 onwards. Update of the national gross production of broiler meat in 2019.
  
-9) Sheep, laying hens, broilers, pullets: Update of the NH<sub>3</sub> emission factors for manure storage according to EMEP (2019). +9) Turkeys: Update of input data (slaughter weight, weight gain and feed conversion coefficient) for the years 2017-2019.
  
-10) Broilers: Update of the national gross production of broiler meat in 2018; update of activity data of air scrubbing systems in broiler housings from 2013 onwards.+10) Geese: update (increase) of the amount of bedding material (straw) and update (increase) of N-excretions for the whole time series.
  
-11) Turkeys: Recalculation of the final weights of roosters and hens 1990 to 2001.+11) Laying hens: Improved interpolation of start weights and final weights for the whole time series. 
 +  
 +12) Pullets: Improved interpolation of start weights and final weights for the whole time series.
  
-12) Anaerobic digestion of animal manures: Update of activity data in all years and of the NH<sub>3</sub> emission factors for pre-storage of cattle manure and poultry manure.+13) Anaerobic digestion of animal manures: Update of activity data in all years. 
 +  
 +14) Mineral fertilizers: : New weighting procedure for the latest year: 2020 weighted mean from 2019 (weight 1/3) and 2020 (weight 2/3)).
  
-13) Mineral fertilizers, liming, application of urea: Annual averaging of activity data (moving centered three-year mean for 1990 to 2018; for 2019 mean from 2018 and 2019).+15) Application of sewage sludge to soils: Update of activity data in 2018 and 2019. Minor corrections of activity data in one federal state for the whole time series.
  
-14) Application of sewage sludge to soils: Update of activity data in 2018.+16) Anaerobic digestion of energy crops: Update of activity data in 2019. 
 +  
 +17) Soils: Minor corrections of cultivated areas and yields in several years.
  
-15) Anaerobic digestion of energy crops: Update of activity data in 2018.+18) Pesticides: Recalculations were made for the complete time series due to the changes and new information given by the BVL for the amount of domestic sales of the active substances Lindane (1990 – 1997), Chlorothalonil and Picloram (2019) and the maximum amount of HCB in the active substance Chlorothalonil of the FAO specification was used for the calculation in the period 2005 - 2017.
  
-16) Crop residues: Minor corrections of cultivated areas and yields in the years 1999 and 2010 through 2012.