Adapted from
S. Brouder & H. Gómez-Macpherson (2014). The impact of conservation agriculture on smallholder agricultural yields: A scoping review of the evidence. Agriculture, Ecosystems and Environment, 187, 11-32
http://www.sciencedirect.com/science/journal/01678809/187
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Complex Conservation Agriculture in Three Steps
1. Adapted from
S. Brouder & H. Gómez-Macpherson (2014). The impact of
conservation agriculture on smallholder agricultural yields:
A scoping review of the evidence.
Agriculture, Ecosystems and Environment, 187, 11-32
http://www.sciencedirect.com/science/journal/01678809/18
7
2. FAO Conservation Agriculture 3 pillars
1. minimum disturbance of soil (ideally
zero-tillage)
2. retention of sufficient crop residue
to provide surface coverage
(at least 30% ground cover)
3. diversified cropping patterns
(rotation)
Conservation Agriculture
3. most farmers adopt 1 or 2 of these pillars
highly variable results regarding effects on soil
quality and productivity:
positive / negative / neutral
short term / long term
poor/confusing reporting: what is conventional
tillage? minimum tillage? reduced tillage? How are
residues manage?
complex interaction of system management,
system productivity components and
prevailing conditions
Conservation Agriculture
4. 1st adopting zero-tillage (no soil disturbance)
The complexity in 3 steps
then + maintaining residues on the ground (mulch)
then + rotate crops