Michel de Haan. Презентация в рамках сессии о развитии...
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Transcript of Michel de Haan. Презентация в рамках сессии о развитии...
Annual Nutrient CyclingAssessment (ANCA) in the Dutch Dairy Sector Michel de Haan
Wageningen UR
Farming & Circular Economy
Dutch aim: Efficient on minerals
• Produce more milk; pollute less
• Being more efficient on minerals: saving costs; • less costs for fertilizer• Less costs for feed• Less costs for manure export• Less costs for manure processing
• ANCA measures mineral performance
Dairy farming = nutrient cycling
ANCA calculates1. Efficiency of feeding (conversion of N and P from feed into milk and meat)2. Production of manure: excretion of N and P3. Ammonia losses from excrements and mineral fertilisers4. Crop yields: N, P, C, energy (kVEM) 5. Efficiency of fertilisation: conversion form fertiliser and manure into crop
yields6. Surpluses of N, P on farm balance7. Surpluses of N, P on soil balance8. Dynamics C-content soil (C- sequestration)9. Green House Gas emissions (CH4, N2O, CO2 )
Input for ANCA
• Feed• Milk• Manure; fertiliser• Animals• Land
Most of the data is stored already- Opportunity to help the farmer: reducing time collecting input- Opportunity to help controller: secure correct input
Milk processors Farmers union Feed suppliers Accountants
Agreement: obligation to use ANCA
From 2016 onwards: ANCA mandatory for all dairy farms
Penalty: milk will not be collected
Using ANCA properly
• Farm specific data and performances registered in a national database
• Dairy sector will be more efficient on minerals
• Good performances will be rewarded
• Good management leads to more ‘farming freedom’