Crop residue tradeoffs in crop-livestock systems:  Ideas for scenarios to be analyzed <ul><ul><li>Presentation by Mark T. ...
Aim of SLP project <ul><li>Optimizing livelihood and environmental </li></ul><ul><li>benefits from crop residues in smallh...
Crop residues Manure Feed Food Fertilisers Food + services Feed Market Food Livestock Grasslands Cropland Household
Crop residues have different functions <ul><li>Fodder for livestock    short term productivity livestock </li></ul><ul><l...
NUANCES-FARMSIM FIELD: dynamic, summary model of CROP and SOIL processes  LIVSIM: individual based dynamic, summary model ...
Aim of analyses could be <ul><li>Biophysical (productivity, soil fertility) consequences of different use of crop residues...
Degree of crop-livestock integration  Stocks, flows and assets System state II + + Management intensity + + System state I...
For different sites at different levels of crop-livestock integration: <ul><li>Indicators </li></ul><ul><li>soil C develop...
Main interest <ul><li>Comparison of sites!! </li></ul>
Crop residue tradeoffs in crop-livestock systems: Ideas for scenarios to be analyzed
Upcoming SlideShare
Loading in …5
×

Crop residue tradeoffs in crop-livestock systems: Ideas for scenarios to be analyzed

1,021 views
976 views

Published on

Presentation by Mark T. van Wijk for the SLP Crop Residues Project Review and Planning Meeting, Addis Ababa, Ethiopia, 9-10 December 2010.

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,021
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
17
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Figure 11: Schematic conceptualisation of pathways towards intensification and their potential impact on household well-being. In this case, the impact of intensifying crop-livestock interactions (x-axis) on different aspects of household well-being (y-axis) such as food security or cash income follows a discontinuous trajectory in which input-intensification (quantitative) must be followed by qualitative changes in the productive structure of the farm to induce ‘jumps’ of the system towards higher states. Resource use efficiencies, the degree of complementarities between production activities, resource endowment and management intensity increase from system states I to III. Stressing factors (e.g. population density) and alleviation interventions may modify the slope of the trajectory towards higher levels of well-being for a certain degree of intensification.
  • Crop residue tradeoffs in crop-livestock systems: Ideas for scenarios to be analyzed

    1. 1. Crop residue tradeoffs in crop-livestock systems: Ideas for scenarios to be analyzed <ul><ul><li>Presentation by Mark T. van Wijk for the SLP Crop Residues Project Review and Planning Meeting </li></ul></ul><ul><ul><li>Addis Ababa, Ethiopia, 9-10 Dec 2010 </li></ul></ul>Wageningen University, Plant Production Systems email: mark.vanwijk@wur.nl
    2. 2. Aim of SLP project <ul><li>Optimizing livelihood and environmental </li></ul><ul><li>benefits from crop residues in smallholder </li></ul><ul><li>crop-livestock systems in sub-Saharan </li></ul><ul><li>Africa and South Asia: regional case studies </li></ul>
    3. 3. Crop residues Manure Feed Food Fertilisers Food + services Feed Market Food Livestock Grasslands Cropland Household
    4. 4. Crop residues have different functions <ul><li>Fodder for livestock  short term productivity livestock </li></ul><ul><li>Input for soil  long term productivity crops </li></ul>
    5. 5. NUANCES-FARMSIM FIELD: dynamic, summary model of CROP and SOIL processes LIVSIM: individual based dynamic, summary model of livestock HEAPSIM: dynamic summary model of manure management and storage LABOURSIM and CASHSIM: summary models of socio-economic components and their interactions with production comp.
    6. 6. Aim of analyses could be <ul><li>Biophysical (productivity, soil fertility) consequences of different use of crop residues along intensification pathways </li></ul>
    7. 7. Degree of crop-livestock integration Stocks, flows and assets System state II + + Management intensity + + System state III System state I Household “Well-being” Stress Alleviation Tittonell, Van Wijk et al, 2009, Agricultural Systems
    8. 8. For different sites at different levels of crop-livestock integration: <ul><li>Indicators </li></ul><ul><li>soil C development </li></ul><ul><li>crop productivity and its variability </li></ul><ul><li>livestock productivity </li></ul><ul><li>Look at consequences of different use of crop residues (scenarios) </li></ul>
    9. 9. Main interest <ul><li>Comparison of sites!! </li></ul>

    ×