Agroforestry as a pathway to agricultural yield impacts in climate-smart agriculture investments: Evidence from southern Malawi

Research output: Contribution to journalArticle

Abstract

Agroforestry is widely promoted for delivering not only the main food security objective of climate-smart agriculture (CSA) but also increasing resilience and mitigating climate change. Yet rigorous estimates of the impact of this pathway on agricultural yields in CSA interventions remain limited. Here we analyze maize yield effects of agroforestry within a large CSA project, funded by the US Agency for International Development and implemented from 2009 to 2014 in southern Malawi. Using original survey data from 808 households across five districts, we apply a double hurdle specification with a control function approach to account for the endogeneity of CSA program participation and the intensity of agroforestry fertilizer trees (as a proxy for agroforestry adoption) in the study area. We find a positive and statistically significant yield effect of CSA program participation and the intensity of agroforestry fertilizer trees: maize yields increased, on average, by 20% for participation, and 2% for the intensity of fertilizer trees – a modest but useful result with implications for increasing agricultural productivity among smallholder farmers in sub-Saharan Africa and elsewhere. More broadly, our results show that incorporating agroforestry into CSA interventions could enhance agricultural yields among smallholder farmers in the face of climate change — a crucial aspect of sustainable development goals on hunger and climate adaptation.

Original languageEnglish (US)
Article number106443
JournalEcological Economics
Volume167
DOIs
StatePublished - Jan 2020

Fingerprint

agroforestry
agriculture
climate
fertilizer
smallholder
maize
climate change
hunger
yield (agricultural)
Malawi
Climate
Pathway
Agriculture
Agroforestry
food security
sustainable development
productivity
participation
Fertilizer

Keywords

  • Agroforestry
  • Climate-smart agriculture
  • Double hurdle
  • Maize yield
  • Malawi

ASJC Scopus subject areas

  • Environmental Science(all)
  • Economics and Econometrics

Cite this

@article{3473b1ed08524a76b3e470da98966477,
title = "Agroforestry as a pathway to agricultural yield impacts in climate-smart agriculture investments: Evidence from southern Malawi",
abstract = "Agroforestry is widely promoted for delivering not only the main food security objective of climate-smart agriculture (CSA) but also increasing resilience and mitigating climate change. Yet rigorous estimates of the impact of this pathway on agricultural yields in CSA interventions remain limited. Here we analyze maize yield effects of agroforestry within a large CSA project, funded by the US Agency for International Development and implemented from 2009 to 2014 in southern Malawi. Using original survey data from 808 households across five districts, we apply a double hurdle specification with a control function approach to account for the endogeneity of CSA program participation and the intensity of agroforestry fertilizer trees (as a proxy for agroforestry adoption) in the study area. We find a positive and statistically significant yield effect of CSA program participation and the intensity of agroforestry fertilizer trees: maize yields increased, on average, by 20{\%} for participation, and 2{\%} for the intensity of fertilizer trees – a modest but useful result with implications for increasing agricultural productivity among smallholder farmers in sub-Saharan Africa and elsewhere. More broadly, our results show that incorporating agroforestry into CSA interventions could enhance agricultural yields among smallholder farmers in the face of climate change — a crucial aspect of sustainable development goals on hunger and climate adaptation.",
keywords = "Agroforestry, Climate-smart agriculture, Double hurdle, Maize yield, Malawi",
author = "Amadu, {Festus O.} and Miller, {Daniel Charles} and McNamara, {Paul E}",
year = "2020",
month = "1",
doi = "10.1016/j.ecolecon.2019.106443",
language = "English (US)",
volume = "167",
journal = "Ecological Economics",
issn = "0921-8009",
publisher = "Elsevier",

}

TY - JOUR

T1 - Agroforestry as a pathway to agricultural yield impacts in climate-smart agriculture investments

T2 - Evidence from southern Malawi

AU - Amadu, Festus O.

AU - Miller, Daniel Charles

AU - McNamara, Paul E

PY - 2020/1

Y1 - 2020/1

N2 - Agroforestry is widely promoted for delivering not only the main food security objective of climate-smart agriculture (CSA) but also increasing resilience and mitigating climate change. Yet rigorous estimates of the impact of this pathway on agricultural yields in CSA interventions remain limited. Here we analyze maize yield effects of agroforestry within a large CSA project, funded by the US Agency for International Development and implemented from 2009 to 2014 in southern Malawi. Using original survey data from 808 households across five districts, we apply a double hurdle specification with a control function approach to account for the endogeneity of CSA program participation and the intensity of agroforestry fertilizer trees (as a proxy for agroforestry adoption) in the study area. We find a positive and statistically significant yield effect of CSA program participation and the intensity of agroforestry fertilizer trees: maize yields increased, on average, by 20% for participation, and 2% for the intensity of fertilizer trees – a modest but useful result with implications for increasing agricultural productivity among smallholder farmers in sub-Saharan Africa and elsewhere. More broadly, our results show that incorporating agroforestry into CSA interventions could enhance agricultural yields among smallholder farmers in the face of climate change — a crucial aspect of sustainable development goals on hunger and climate adaptation.

AB - Agroforestry is widely promoted for delivering not only the main food security objective of climate-smart agriculture (CSA) but also increasing resilience and mitigating climate change. Yet rigorous estimates of the impact of this pathway on agricultural yields in CSA interventions remain limited. Here we analyze maize yield effects of agroforestry within a large CSA project, funded by the US Agency for International Development and implemented from 2009 to 2014 in southern Malawi. Using original survey data from 808 households across five districts, we apply a double hurdle specification with a control function approach to account for the endogeneity of CSA program participation and the intensity of agroforestry fertilizer trees (as a proxy for agroforestry adoption) in the study area. We find a positive and statistically significant yield effect of CSA program participation and the intensity of agroforestry fertilizer trees: maize yields increased, on average, by 20% for participation, and 2% for the intensity of fertilizer trees – a modest but useful result with implications for increasing agricultural productivity among smallholder farmers in sub-Saharan Africa and elsewhere. More broadly, our results show that incorporating agroforestry into CSA interventions could enhance agricultural yields among smallholder farmers in the face of climate change — a crucial aspect of sustainable development goals on hunger and climate adaptation.

KW - Agroforestry

KW - Climate-smart agriculture

KW - Double hurdle

KW - Maize yield

KW - Malawi

UR - http://www.scopus.com/inward/record.url?scp=85071733438&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85071733438&partnerID=8YFLogxK

U2 - 10.1016/j.ecolecon.2019.106443

DO - 10.1016/j.ecolecon.2019.106443

M3 - Article

AN - SCOPUS:85071733438

VL - 167

JO - Ecological Economics

JF - Ecological Economics

SN - 0921-8009

M1 - 106443

ER -