This document discusses systems-oriented approaches to sustainable intensification on multifunctional farms and landscapes in humid tropical regions. It examines assessing farm systems for multiple functions and tradeoffs, using goal-oriented approaches based on comparing productivity, environmental, and social performance to defined goals. Case studies from Uganda show diversity in income sources among households in the same region, differences in crop enterprise profitability and adoption, and factors beyond natural resources that influence farmers' technology adoption decisions, such as attitudes.
Monitoring, reporting, and verification of soil carbon sequestration on the c...ExternalEvents
This presentation was presented during the 3 Parallel session on Theme 1, Monitoring, mapping, measuring, reporting and verification (MRV) of SOC, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Brian McConkey, from Agriculture and Agrifood – Canada, in FAO Hq, Rome
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The document discusses how highest and best use influences site value. It describes the four tests of highest and best use - physically possible, legally permitted, economically feasible, and maximally productive. It then discusses how physical aspects like size, shape, soil/topography, and off-site factors like utilities and access can influence a site's value. The highest and best use is determined by applying these tests sequentially to identify the use that meets all criteria and maximizes a site's value.
IFPRI Low Emissions Development Strategies (LEDS) ColombiaIFPRI-EPTD
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This document discusses incentivizing soil carbon sequestration through various policy instruments. It outlines challenges like additionality, permanence, leakage and measurability. Agricultural policies like the CAP and climate policies provide some opportunities, like protecting grasslands, improving GAEC standards, and paying farmers for carbon sequestration under Pillar 2 schemes or carbon offset markets. While there are concerns about additionality, these approaches could encourage learning and experimenting with measurement and verification methods.
Presentation at RELU Farm Level Workshop 2009Daniel Sandars
1) The document describes a linear programming model that was developed to analyze the impact of biodiversity policy on farmers and the consequences of farming on biodiversity.
2) Key aspects of the model include quantifying measures of biodiversity, incorporating field boundary features and their effects on spatial geometry, and developing criteria to model farmer decision behavior.
3) Results showed that farmers on lighter soils can increase overwintering crop residues more readily than those on heavier soils, but doing so increases financial risks. Promoting spring crops alone does not necessarily provide more overwintering residues. Higher commodity prices tend to reduce residues by prioritizing timely harvesting.
Field to Market is a collaborative group that brings together agricultural stakeholders to develop sustainability metrics. It has developed indicators to measure trends in land use, soil conservation, energy use, greenhouse gas emissions, and other areas. Analysis shows that while U.S. soybean production has become more efficient over time in these areas on a per-bushel basis, total environmental impacts have increased due to rising yields and production. The group provides tools like the Fieldprint Calculator to help farmers evaluate their sustainability performance and identify improvement opportunities.
This document discusses systems-oriented approaches to sustainable intensification on multifunctional farms and landscapes in humid tropical regions. It examines assessing farm systems for multiple functions and tradeoffs, using goal-oriented approaches based on comparing productivity, environmental, and social performance to defined goals. Case studies from Uganda show diversity in income sources among households in the same region, differences in crop enterprise profitability and adoption, and factors beyond natural resources that influence farmers' technology adoption decisions, such as attitudes.
Monitoring, reporting, and verification of soil carbon sequestration on the c...ExternalEvents
This presentation was presented during the 3 Parallel session on Theme 1, Monitoring, mapping, measuring, reporting and verification (MRV) of SOC, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Brian McConkey, from Agriculture and Agrifood – Canada, in FAO Hq, Rome
Update on Canada’s Contribution to the Global Soil Organic Carbon MapExternalEvents
This presentation was presented during the 3 Parallel session on Theme 1, Monitoring, mapping, measuring, reporting and verification (MRV) of SOC, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Bert Vanden Bygaart from Agricultural and Agrifood - Canada, in FAO Hq, Rome
The document discusses how highest and best use influences site value. It describes the four tests of highest and best use - physically possible, legally permitted, economically feasible, and maximally productive. It then discusses how physical aspects like size, shape, soil/topography, and off-site factors like utilities and access can influence a site's value. The highest and best use is determined by applying these tests sequentially to identify the use that meets all criteria and maximizes a site's value.
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The document describes an analysis of land use and emissions scenarios for Colombia using integrated modeling tools. It presents the baseline results which project increases in areas of palm, plantain, sugarcane and pasture between 2008-2030, and decreases in forest area. The modeling framework combines IMPACT for agricultural commodity projections, a land use model to estimate land conversions, and DNDC to estimate carbon stocks and GHG emissions from these changes.
This document discusses incentivizing soil carbon sequestration through various policy instruments. It outlines challenges like additionality, permanence, leakage and measurability. Agricultural policies like the CAP and climate policies provide some opportunities, like protecting grasslands, improving GAEC standards, and paying farmers for carbon sequestration under Pillar 2 schemes or carbon offset markets. While there are concerns about additionality, these approaches could encourage learning and experimenting with measurement and verification methods.
Presentation at RELU Farm Level Workshop 2009Daniel Sandars
1) The document describes a linear programming model that was developed to analyze the impact of biodiversity policy on farmers and the consequences of farming on biodiversity.
2) Key aspects of the model include quantifying measures of biodiversity, incorporating field boundary features and their effects on spatial geometry, and developing criteria to model farmer decision behavior.
3) Results showed that farmers on lighter soils can increase overwintering crop residues more readily than those on heavier soils, but doing so increases financial risks. Promoting spring crops alone does not necessarily provide more overwintering residues. Higher commodity prices tend to reduce residues by prioritizing timely harvesting.
Field to Market is a collaborative group that brings together agricultural stakeholders to develop sustainability metrics. It has developed indicators to measure trends in land use, soil conservation, energy use, greenhouse gas emissions, and other areas. Analysis shows that while U.S. soybean production has become more efficient over time in these areas on a per-bushel basis, total environmental impacts have increased due to rising yields and production. The group provides tools like the Fieldprint Calculator to help farmers evaluate their sustainability performance and identify improvement opportunities.
Impact of Sustainable Land and Watershed Management (SLWM) Practices in the B...essp2
Sustainable land and watershed management (SLWM) practices were studied in the Blue Nile basin of Ethiopia. The research found that farmers who implemented and sustained SLWM for at least 7 years experienced higher agricultural production values in the medium term. The longer SLWM was sustained, the higher the marginal benefit of an additional year. However, the costs of initial investment and long-term maintenance of SLWM practices may outweigh the private benefits to individual farmers, depending on factors like wage rates and discount rates used. A combination of SLWM with other soil fertility and moisture management techniques may yield quicker returns on investment.
Impact of Sustainable Land and Watershed Management (SLWM) Practices in the B...essp2
International Food Policy Research Institute (IFPRI) and Ethiopian Development Research Institute (EDRI). Conference on "Towards what works in Rural Development in Ethiopia: Evidence on the Impact of Investments and Policies". December 13, 2013. Hilton Hotel, Addis Ababa.
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The document summarizes research on the impact of sustainable land and watershed management (SLWM) practices in Ethiopia's Blue Nile basin. The research found that:
1) Households that adopted SLWM practices like stone terraces and check dams on their private land for at least 7 years experienced higher agricultural production values in the medium term compared to non-adopting households.
2) The longer households sustained SLWM practices, the higher the marginal benefit of sustaining those practices for an additional year.
3) A benefit-cost analysis found that the benefits of SLWM investments did not outweigh the costs immediately, suggesting the need to provide initial packages of investments and consider other adoption factors.
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2. The program involves all 15 CGIAR centers and other partners in building an integrated modeling framework and stronger community of practice for foresight.
3. The objectives are to improve modeling tools, strengthen the foresight community, improve assessments of alternative global futures, and inform research, investment, and policy decisions through collective scenario analysis.
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Portuguese version: http://www.slideshare.net/IFPRIDSG/james-2-port
- The document summarizes a survey of farmers and landowners in the Great Lakes region on how deglobalization and conservation policies may impact land use decisions.
- The survey found that economic factors like changes in crop revenue and conservation payments strongly influence whether operators and landowners change land allocations between production, conservation, and other uses.
- Non-operating landowners were more responsive than farmers to changes in conservation payments, while farmers were more influenced by changes in crop revenue. The study aims to better understand heterogeneous behavior and incorporate social factors into models of regional land use and environmental outcomes.
Representatives of the International Rice Research Institute and the CGIAR Program on Climate Change, Agriculture and Food Security gave this presentation on applying and scaling up Alternate Wetting and Drying for paddy rice in Vietnam.
- Climate change is expected to negatively impact agricultural productivity in Sub-Saharan Africa due to increased temperatures, weather variability, and extreme events.
- Climate-smart agriculture is promoted to enhance productivity while reducing emissions and increasing carbon sequestration, but effects are context-specific.
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The Impact of Productive Safety Net Program (PSNP) Community Assets on Yield ...essp2
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2) It finds that while road construction did not significantly increase yields, SWC projects like terracing and tree planting had a positive 2.8% effect on yield growth.
3) SWC projects help rehabilitate soil and water resources, reducing flooding and erosion hazards while increasing moisture and biodiversity - important in Ethiopia's drought-prone PSNP areas.
Low Emissions Development Strategies (LEDS) Training Sept 9, 2013IFPRI-EPTD
Globally, agriculture is responsible for 10 – 14% of GHG emissions and largest source of no-CO2 GHG emissions. Countries can choose among a portfolio of growth-inducing technologies with different emission characteristics. We believe that is less costly to avoid high-emissions lock-in than replace high-emissions technologies. There's a need to encourage Low Emission Development Strategies.
This document discusses constrained multiplier analysis by relaxing the assumption of unlimited factor resources. It introduces the concept of constraining some sectors' production levels to model resource constraints in agriculture, mining, and government services. The constrained multiplier formula is derived, distinguishing between supply-unconstrained and constrained sectors. A matrix format is used to represent the formula, with the constrained multiplier calculated as the inverse of the identity matrix minus an adjusted coefficient matrix, multiplied by the exogenous components matrix. Readers are directed to a worksheet exercise to calculate constrained multipliers using the mathematical equations and Excel functions.
This document provides an introduction to multiplier analysis using social accounting matrices (SAM). It outlines how economic linkages transmit the effects of exogenous demand shocks through an economy. The direct and indirect effects are explained, with indirect effects including consumption and production linkages. An unconstrained SAM multiplier model is presented, with formulas derived to calculate economy-wide output, income, and sectoral responses to exogenous changes in demand. Exercises are provided to build a multiplier model in Excel and calculate multipliers.
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Impact of Sustainable Land and Watershed Management (SLWM) Practices in the Blue Nile
1. 1
Impact of Sustainable Land and Watershed
Management (SLWM) Practices in the Blue Nile
Emily Schmidt and Fanaye Tadesse
IFPRI ESSP-II
Sustainable Land and Watershed Management
Interventions and Impact Workshop
May 10, 2013
Hilton Hotel, Addis Ababa
2. Outline of presentation
• Brief overview of soil and water conservation in
the Blue Nile Basin, Ethiopia
• Research questions
• Sample and descriptive statistics
• Methodology
• Results
• Implications
3. Agriculture in the Blue Nile Basin
• Land degradation in some areas is estimated to
decrease agricultural productivity by 0.5 to 1.1% per
year. (Holden et al. 2009)
• Moisture stress between rainfall events (dry spells) is
responsible for most crop yield reductions (Adejuwon,
2005)
• Many programs implemented past and present to
improve soil and water conservation in the highlands
of Ethiopia (SLMP, GIZ, World Bank, MERET, SUN, Soil
Research Conservation Program)
4. Agriculture in the Blue Nile Basin (2)
• Analysis of soil and water conservation on land
productivity in Ethiopia suggest mixed results
– Plots with stone terraces experience higher crop yields
(Pender and Gebremedhin, 2006)
– Experimental trials of bunds and terraces suggest costs
outweigh benefits (Shiferaw and Holden, 2001).
– Depends on agricultural potential: low-agricultural
potential areas benefit more from minimum tillage (MT)
and conventional farming, whereas MT has no significant
effect on high-agricultural potential areas (Kassie et al., 2010).
5. Study focus: Blue Nile (Abbay) Basin
• Evaluate SLWM investment impact on value of
production per hectare
• Understand time horizon of impact (how long
does it take to experience a benefit?)
• Assess benefit-cost of such investments
6. Preview of findings
• Farmers that implement and maintain SLWM
experience higher value of production in the medium
term
• Significant benefits are not experienced until after 7
years of maintenance
• The longer one sustains SLWM, the higher the
marginal effect of sustaining an extra year of activity.
• It is not clear that the benefits of investment in
SLWM at the private farm-plot level outweigh the
labor costs of maintenance
7. Sample Selection
• 2 regions, 9 woredas (districts): Random sampling of 200
HHs per woreda
• Stratification: Random sample within woredas that have
recently started or planned SLM program
– 3 sites (kebeles) per woreda (SLMP woredas)
• Past or Ongoing program
• Planned program (for 2011)
• No formal past program
8. Study sites: 9 woredas (1800 households)
in Amhara and Oromiya
9. Agricultural Production of Survey Sample
9 woredas: 5 Amhara, 4 Oromiya
– Teff as leading crop (4 woredas in Amhara)
• Fogera
• Gozamin
• Toko Kutaye
• Misrak Este
– Maize
• Mene Sibu (Oromiya)
• Diga (Oromiya)
• Alefa (Amhara)
– Wheat / other
• Dega Damot (Amhara)
• Jeldu (Oromiya)
• Substantial diversity across woredas in terms of
production patterns, landholding, agricultural activity
10. Households Using SLM on Private Land
Woreda
Percent of
woreda
Year of first
Community
Program
Most common
activity on private
land (percent)
Alefa 50% 1990 soil bund (64.2)
Fogera 54% 1983 stone terrace (65.8)
Misrak Estie 54% 1977 stone terrace (36.1)
Gozamin 21% 1988 soil bund (40.9)
Dega Damot 82% 1986 soil bund (42.8)
Mene Sibu 7% 1992 soil bund (89.8)
Diga 32% 2000 irrigation canal (2.9)
Jeldu 2% na stone terrace (24.0)
Toko Kutaye 79% 1989 soil bund (33.7)
15. Percent of total plots under SLWM on private land
(1944-2009 )
0
2
4
6
8
10
12
14
16
18
20
16. Evaluating the impact of SLWM infrastructure
on value of production
• Need to identify a suitable comparison group: What would plots
be like had they not adopted SLWM on their land?
• Use propensity score matching technique to compare similar
groups:
• Match agricultural plots based on observable
characteristics, for example:
Biophysical characteristics
• Plot slope
• Soil fertility
• Plot size
• Experienced past flood /
erosion
Household characteristics
• Age, sex
• Education
• Official in the village
17. Nearest Neighbor Matching: Plot level
• Plots that received SLWM investment at any time in the analysis
period have 10.4% greater value of production in 2010 than plots
without investment.
•Plots that received SLWM investment before 2002 have 23.9%
greater value of production in 2010 than plots without investment.
• If this is the case, what is the marginal benefit of an extra year of
SLWM?
Outcome variable:
Value of Agricultural
Production
# Observations ATT: Nearest
neighbor
matching
1992-2009 10108 0.104 ***
(1985-2002 E.C.) (.026)
1992-2002 10108 0.239 ***
(1985-1995 E.C.) (.036)
2003-2009 10108 0.0132
(1996-2002 E.C.) (.030)
18. -0.15
-0.10
-0.05
0.00
0.05
0.10
0.15
0.20
1 3 5 7 9 11 13 15 17
Marginaleffect
Years SLWM maintained
Number of
years SLWM
maintained
Marginal
effect
7 0.02
8 0.04
9 0.05
10 0.06
11 0.08
12 0.09
13 0.10
14 0.12
15 0.13
16 0.15
17 0.16
Treatment range with
statistically significant
impact
Increase in value of production given
maintenance of SLWM
19. 3% Discount Rate 5% Discount Rate
Initial investment (birr) 2000 0 2000 0
NPV of Benefits 10,621 10,621 11,478 11,478
Shadow wage rate
factor 1 0.5 1 0.5 1 0.5 1 0.5
NPV of Costs 14,535 7,267 11,229 5,614 17,918 8,959 13,334 6,667
NPV Benefits / NPV
Costs 0.73 1.46 0.95 1.89 0.64 1.28 0.86 1.72
Year Total Net
Benefit > 0 NA 2006 NA 2004 NA 2007 NA 2005
First Year of MB > MC 2001 1999 2001 1999 2001 1999 2001 1999
Benefit-cost of investing in SLWM Infrastructure
(1992–2009)
• Wage rate of non-farm labor is very sensitive
• Initial investment cost affects timing of benefit > cost
20. • Households that construct and sustain SLWM for at
least 7 years experience higher value of production in
the medium term
– Unlike technologies such as fertilizer or improved seeds,
benefits may accrue over longer time horizons.
• The longer one sustains SWC, the higher the marginal
benefit of sustaining an extra year of activity.
• A mixture of strategies may reap quicker benefits
– Physical SWC measures may need to be integrated with soil
fertility management and moisture management
Conclusions
21. • Biophysical benefits may plateau at a certain
treatment level.
– Expect to see diminishing returns of SWC as the necessary
biophysical components are replaced.
• Benefit-Cost scenarios suggest that benefits do not
outweigh costs immediately
– Rethink program planning timelines and initial investments
– Provide a package of investments including soil and water
conservation structures (i.e. fertilizer and improved seed)
– Evaluate other market factors influencing farmer adoption
(i.e. off-farm labor opportunities, land rental, etc.)
Conclusions (2)
23. Methodology
Impact Analysis : matching based on observables
– Nearest Neighbor Matching: measure ATT of adopting specific
SLWM technologies on value of production and livestock
holdings
• 1/3 of private land within the last 15 years (24% of sample)
– 1992 – 2002 (1985 – 1994 EC)
– 2003 – 2009 (1985 – 1994 and 1995 – 2002 EC)
– Continuous Treatment Effect Estimation: estimate response to
a level of treatment; for this study, measured in years SLWM
activity is maintained (Hirano and Imbens, 2004)
ATT = E (∆│X,D = 1) = E(A1 – A0│X,D = 1) = E(A1│X,D = 1) – E(A0│X,D = 1)
24. Covariates for Nearest neighbor matching and
continuous effects estimation
• Land Characteristics
• Land size
• Experienced past flood or erosion
• Experienced past drought
• Slope (flat, steep, mixed)
• Fertilizer use (proxy for willingness to invest – unobservables)
• Soil quality (fertile, semi, non)
• Agro-ecological zone
• Rainfall (30 year average)
• Rainfall variation
• Household Characteristics
• Obtained credit
• Received agricultural extension assistance
• Person-months on non-farm activity
• Distance from a city
• Other HH characteristics (age, sex, education, etc.)
• Other village characteristics
Editor's Notes
In the case of the early adopters (those that adopted SLM 1992-2002), those that have adopted SLM on their private land are more likely to have a 15 percent higher value of agricultural production than who did not. However for the late adopters (those adopting later than 2002, there is no statistically significant impact. No impact is observed in the livestock value for both the early and late adoptersThis implies that time of adoption actually matters and calls for a further investigation on how long it actually takes to see an impact from SLM adoption. We also want to see what the marginal benefit of an extra year of SLM adoption is using the continuous treatment effect function.
In terms of the treatment effect function, which is the marginal effect of sustaining SLM for one more year, we see that for each additional year SLM is maintained on a plot the value of production is increasing and is statically significant after the 7th year. For instance, for a plot that has maintained SLM for 7 years the marginal benefit of maintaining it for an additional year is a 4% increase in value of production. Moreover, for each additional year SLM is maintained, the marginal effect is increasing with every additional year.
The PSM analysis suggests that SLWM benefits are obtained well into the future, which makes them especially sensitive to the choice of discount rate used in the cost benefit analysis. Therefore, we assess benefits and costs under two scenarios, assuming SLWM investment occurred in 1992 (first year of the early adopter group). We use a three and a five percent discount rate in order to construct the net present value of increased agricultural production, and costs of initial investment and maintenance over time.We assume a constant, real recurrent labor cost for yearly maintenance of structures at 516 birr per year (reported days and wage rate from the household survey). Given the off-season nature of SLWM work, we present estimates of labor costs using both the market wage for construction and maintenance of structures and a shadow wage rate of 50 percent of the market wage. The analysis assumes that in the absence of adoption of SLWM technology, the value of production in previous years is equal to the 2009 level (in real terms). Finally, we use two scenarios of initial investment costs. At a five percent discount rate, the first scenario assumes a 2,000 birr initial investment. In this scenario, benefits outweigh costs beginning in 2007 (benefit: cost ratio of 1.28), assuming a shadow wage rate factor of 50 percent (Table 8). Under the same discount rate, with zero initial investment costs (households still incur annual labor costs for maintenance), benefits exceed costs in 2005 (benefit: cost ratio of 1.72). Under the three percent discount rate scenario, benefits outweigh costs in 2006 and 2004 for the two scenarios (2,000 birr and zero birr initial investment) respectively, and net benefits are 1.46 and 1.89 times that of costs. Thus, assuming an initial investment in 1992, the earliest that benefits would exceed costs is 12 years later, assuming the initial investment is fully subsidized and household expenses are equivalent to annual maintenance labor costs.These estimates are consistent with other cost-benefit studies found in the literature. Shiferaw and Holden (2001) analyzed experimental trials of bunds and terraces in west and east Amhara and found insufficient economic incentives for investment in such structures. Hengsdijk et al. (2005) underlined the tradeoffs of investments in Tigray region whereby bunds slightly increased crop productivity during drier periods when yields were low, but decreased productivity during moist seasons because overall cropped area was reduced for the construction of bunds.
Estimate Average Treatment Effect on the Treated (ATT): identify a suitable comparison group which provides an unbiased estimate of the result that adopter households would have if they had chosen not to adopt. Each adopter household is matched to a non-adopter household with its closest propensity scoreTwo potential outcomes for each household (i): adoption Ai(1) or no adoption Ai(0)Impact of adopting SLWM: Δ = A1 – A0. (However, for A1 or A0 the counterfactual is unknown)D = 1 if the household adopts SLWM and 0 if the household is a non-adopterX is a vector of control variables