Crop Rotation Nutrient Audit 
  About This calculator provides a platform to develop as simple nutrient budget from removal in produce and total nutrient input from external sources, over a sequence of 5 crops.
    USE INSTRUCTIONS
  General White cells can be edited or changed.
  Produce Name Select the type of produce removed from the drop-down menu highlighted when you click on the appropriate cell in this row.
  Produce Removed Input the quantity of produce removed. For grain crops in tonnes/ha, annual horti crops tonnes of fresh weight per hectare and meat in tonnes of live weight gain per hectare.
  Stubble Removed Input the quantity of crop residue removed in addition to produce in tonnes per hectare.
  Nutrient Applied In  the N, P, K, S sections enter the total rate of nutrient applied for each crop. This may include nutrients from fetiliser, recycle biosolids etc. For pulse crops enter the rate of N that gives a 0 balance for the crop to account for legume N fixed.
  Output Balances of each nutrient for each crop and the total for the 5 crop sequence are displayed. Negative balance for each crop and total sequence are highlighted in red.
  Disclaimer The evaluation and recommendation reports provided here are a guide only, and depend on representative samples being analysed. Additionally environmental and managerial factors influence performannce therefore as suppliers of this decision support we do not accept any liability whatsoever arising from the application of recommendations, for any damage, loss or injury of any nature and the user takes these evaluations and recommendations on these terms. This recommendation is made in good faith, based on the best technical information available.
© Back Paddock Company 2015
Rotation Crop Nutrient Audit  
    Cropping Sequence    
Year Units 1 2 3 4 5 Total  
Produce Name  
   
Produce Yield  t/ha    
Stubble removed t/ha    
                 
N  in produce kg/t  
N removal kg/ha  
N applied kg/ha  
Change in soil N kg/ha  
     
N  in stubble kg/t  
N removal kg/ha  
Change in soil N kg/ha  
Ʃ Soil N change kg/ha  
                 
P in produce kg/t  
P removal kg/ha  
P applied kg/ha  
Change in soil P kg/ha  
     
P in stubble kg/t  
P removal kg/ha  
Change in soil P kg/ha  
Ʃ Soil P change kg/ha  
                 
K in produce kg/t  
K removal kg/ha  
 K applied kg/ha  
Change in soil K kg/ha  
     
K in stubble kg/t  
K removal kg/ha  
Change in soil K kg/ha  
Ʃ Soil K change kg/ha  
                 
S  in produce kg/t  
S removal kg/ha  
S applied kg/ha  
Change in  soil S kg/ha  
     
S  in stubble kg/t  
S removal kg/ha  
Change in  soil S kg/ha  
Ʃ Soil S change kg/ha