State-conditional Fertilizer Yield Response on Western Kenyan Farms

By P. Marenya, Christopher B. Barrett. 2009

317 citations recorded by the source corpus.

Subfields: Economics and Econometrics, General Agricultural and Biological Sciences, Soil Science

View Paper: https://www.semanticscholar.org/paper/c3abbbf3d3307d4ed7dcef60a983c012113c426a

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In Soil Science

Citations in the corpus

The Economy-wide Impacts and Risks of Malawi's Farm Input Subsidy Program (2014, unknown): “…econometric modelling in which effects of a variety of factors are controlled for, including soil characteristics (slope, organic matter content, and nutrient content), weather and geographic location, and labour and other input use (see for example Marenya and Barrett 2009; Harou et al. 2013).”
Review: Taking stock of Africa’s second-generation agricultural input subsidy programs (2018, background): “These mean response rates also mask substantial variability in response rates across farms and even plots on a given farm (Marenya & Barrett 2009; Xu et al., 2009; Burke et al., 2016; Burke et al., 2017).”
The Economics of Poverty Traps and Persistent Poverty: Empirical and Policy Implications (2013, background): “…with marginal or fragile soils have no incentive to apply fertilisers or to invest in soil conservation measures, creating a downward spiral of deteriorating soils, lower productivity and persistent poverty (Antle, Stoorvogel, & Valdivia, 2006; Marenya & Barrett, 2009a, b; Stephens et al., 2012).”
Soil quality and fertilizer use rates among smallholder farmers in western Kenya (2009, background): “This has led to the call for microfinance and microfinance services for the poor liquidity constrained rural households (Morduch, 2000; Robinson, 2001; von Pischke et al., 1983).”
Agriculture and Development: A Brief Review of the Literature (2011, unknown): “Although some authors (e.g., Marenya and Barrett, 2009) argue that once land is degraded, fertilizer will be ineffective, Matsumoto and Yamano (2009) do not find a diminishing yield effect of fertilizers as soil fertility decreases.”
Limits to Green Revolution in rice in Africa: The case of Ghana (2017, background): “Marenya and Barrett (2009a) and Matsumoto and Yamano (2010) demonstrated that the profitability of adoption of improved technology can differ significantly by soil quality even for plots in roughly similar agroecological conditions.”
Well-Being Dynamics and Poverty Traps (2016, background): “Drawing on Zimmerman & Carter (2003) and McPeak (2004), Carter & Lybbert (2012) note that “the marginal value of assets will become extraordinarily high in the neighborhood of critical wealth levels; households in these neighborhoods will be reluctant to liquidate assets even in the face of economic”
The Data‐Intensive Farm Management Project: Changing Agronomic Research Through On‐Farm Precision Experimentation (2019, methodology): “Agronomy Journa l • Volume 111, Issue 6 • 2019 2737 on small-plot randomized agronomic field trials to generate the data needed to estimate yield response to inputs (e.g., Spillman, 1933; Heady and Pesek, 1954; Waugh et al., 1973; Stauber et al., 1975; Odell et al., 1984; Ackello-Ogutu et al., 1985;”
Using agriculture for development: Supply- and demand-side approaches (2020, unknown): “In Western Kenya, Marenya and Barrett (2009) find that only 55% of plots can profitably use chemical fertilizers due to lack of a complementary factor, in this case soil organic matter as measured by carbon content.”
Productivity, credit, risk, and the demand for weather index insurance in smallholder agriculture in Ethiopia (2013, result): “Contrasting with studies showing high average returns to fertilizer, however, several recent studies emphasize the poor quality of soils that make adoption unprofitable (Marenya and Barrett, 2009), or the heterogeneity of farmer profitability of fertilizer use (Suri, 2011).”
A meta-analysis of intercropping in Africa: impacts on crop yield, farmer income, and integrated pest management effects (2017, background): “…densely planted intercropped combinations can receive lower rates of fertilizer per plant, input use can be incorrectly reported, and fertilizer effects can vary significantly due to differences in soil type and application timing, form, and rate (Carlson & Hill, 1985; Marenya & Barrett, 2009).”
Adaptation of agricultural and food systems to climate change: an economic and policy perspective. (2010, background): “Statistical methods also show threshold effects in crop production associated with environmental conditions such as soil fertility (Marenya and Barrett 2009).”