As part of a national policy to ensure a certain level of food self-sufficiency in strategic crops, the government of Egypt subsidizes nitrogen fertilizer directly by distributing quotas of subsidized fertilizers to farmers and indirectly by subsidizing natural gas used by local fertilizer factories. The implication of this subsidy on farmers’ fertilizer demand and productivity remains unknown. Using a detailed agricultural survey collected from smallholder farmers in Upper Egypt, we show that nitrogen fertilizer application rates are substantially in excess of crop-specific agronomic recommendations. We exploit eligibility criteria and other sources of variation to show that farm plots with easier access to the subsidy tend to use more subsidized nitrogen fertilizer and less phosphate fertilizer. Easier access to the subsidy increases use of total nitrogen fertilizer per unit of land, mainly because of the increase in subsidized nitrogen fertilizer. In particular, the fertilizer subsidy program in Egypt is associated with significant overapplication of nitrogen fertilizer. Such overapplication of fertilizer is expected to adversely affect soil, water, and environmental health. Our findings have important policy implications for Egypt and other African countries known for input subsidy programs. As Egypt is currently moving on from the successful implementation of a comprehensive macroeconomic reform program towards sector-level reforms, our results suggest that eliminating fertilizer subsidies is a good place to start.

Global food, fuel, and fertilizer prices have witnessed rapid and significant increase in recent months, driven largely by the fallout from the ongoing war in Ukraine and associated sanctions im-posed on Russia. Other factors, including governments’ responses and export bans, have also con-tributed to rising prices (Laborde and Mamun 2022). Palm oil and wheat prices increased by 56 and 100 percent in real terms, respectively, between June 2021 and April 2022, with most of the in-crease occurring since February 2022.

Increasing population pressure and population density in many African countries are inducing land scarcity and land constraints. These increasing land constraints are expected to trigger various responses and adaptation strategies, including agricultural intensification induced by land scarcity, as postulated by the Boserup hypothesis. However, most empirical evaluations of the Boserup hypothesis come from rainfed agriculture and mostly from Sub-Saharan Africa (SSA), where application of improved agricultural inputs remains historically low. Agricultural intensification practices as well as the relevance of the Boserup hypothesis in irrigated agriculture and in contexts where application of improved inputs is high remains unexplored. Furthermore, while much of the debate on the topic in Africa has focused on how to boost agricultural intensification, there is scant evidence on whether evolving agricultural intensification practices in some parts of Africa are sustainable, yield-enhancing, and optimal. In this paper we investigate the implication of land scarcity on agricultural intensification and the relevance of the Boserup hypothesis in the context of Egypt, where agriculture is dominated by irrigation and input application rates are much higher than SSA. We also examine whether evolving agricultural intensification practices induced by land scarcity are agronomically appropriate and yield-enhancing. We find that land scarcity induces higher application of agricultural inputs, mainly nitrogen fertilizers, sometimes beyond the level that is agronomically recommended. More importantly, land scarcity increases overapplication of nitrogen fertilizer relative to crop-specific agronomic recommendations. This implies that land constraints remain as important challenges for sustainable agricultural intensification. Finally, we find suggestive evidence that such overapplication of nitrogen fertilizers is not yield-enhancing, but, rather, yield-reducing. We also document that land scarcity impedes mechanization of agriculture. Our findings have important implications to inform appropriate farm management and sustainable intensification practices. Furthermore, our results can inform long-term policy responses to land scarcity.

The importance of a resilient agriculture sector in providing food security, livelihoods, and household income was highlighted in many countries by the recent pandemic, as was the capacity of the sector to cushion the negative impacts of the subsequent economic slowdown. This has been the case in Egypt, where agriculture has been resilient to the health crisis in comparison with the service and industry sectors (Breisinger et al. 2020). However, the sector’s resiliency is gradually being corroded by climate change, with lasting, harmful effects for agriculture and food systems.

Lack of accurate information about soil nutrient requirements coupled with limited access to appropriate fertilizers could lead to mismatch between soil nutrient requirements and fertilizer applications. Such anomalies and mismatches are likely to have important implications for agricultural productivity. In this paper we use experimental (spectral soil analysis) data from Ethiopia to examine farmers’ response to soil nutrient deficiencies and its implications for yield responses. We find that farmers’ response to macronutrient (nitrogen and phosphorus) deficiencies is not always consistent with agronomic recommendations. For instance, we find that farmers in our sample are applying nitrogen fertilizers to soils lacking phosphorus, potentially due to lack of information on soil nutrient deficiencies or lack of access to appropriate fertilizers in rural markets. On the other hand, farmers respond to perceivably poor-quality soils and acidic soils by applying higher amount of nitrogen and phosphorus fertilizers per unit of land. We further show that such mismatches between fertilizer applications and soil macronutrient requirements are potentially yield-reducing. Those farmers matching their soil nutrient requirements and fertilizer application are likely to enjoy additional yield gains and the vice versa. Marginal yield responses associated with nitrogen (phosphorus) application increases with soil nitrogen (phosphorus) deficiency. Similarly, we find that farmers’ response to acidic soils is not yield-enhancing. These findings suggest that such mismatches may explain heterogeneities in marginal returns to chemical fertilizers and the observed low adoption rates of chemical fertilizers in sub-Saharan Africa. As such, these findings have important implications for improving input management practices and fertilizer diffusion strategies.

Clean air, land, and oceans are critical for human health and nutrition and underpin much of the world's economy. Yet they suffer from degradation, poor management, and overuse due to government subsidies. 'Detox Development: Repurposing Environmentally Harmful Subsidies' examines the impact of subsidies on these foundational natural assets. Explicit and implicit subsidies--estimated to exceed US$7 trillion per year--not only promote inefficiencies but also cause much environmental harm. Poor air quality is responsible for approximately 1 in 5 deaths globally. And as the new analyses in this report show, a significant number of these deaths can be attributed to fossil fuel subsidies. Agriculture is the largest user of land worldwide, feeding the world and employing 1 billion people, including 78 percent of the world's poor. But it is subsidized in ways that promote inefficiency, inequity, and unsustainability. Subsidies are shown to drive the deterioration of water quality and increase water scarcity by incentivizing overextraction. In addition, they are responsible for 14 percent of annual deforestation, incentivizing the production of crops that are cultivated near forests. These subsidies are also implicated in the spread of zoonotic and vector-borne diseases, especially malaria. Finally, oceans support the world's fisheries and supply about 3 billion people with almost 20 percent of their protein intake from animals. Yet they are in a collective state of crisis, with more than 34 percent of fisheries overfished, exacerbated by open-access regimes and capacity-increasing subsidies. Although the literature on subsidies is large, this report fills significant knowledge gaps using new data and methods. In doing so, it enhances understanding of the scale and impact of subsidies and offers solutions to reform or repurpose them in efficient and equitable ways. The aim is to enhance understanding of the magnitude, consequences, and drivers of policy successes and failures in order to render reforms more achievable.