This paper provides a comprehensive analysis of the dynamics of volatility between the corn, wheat, and soybean markets in the United States. Volatility interactions across markets, if they exist, may lower the effectiveness of diversification strategies to mitigate price risks and should be taken into account when analyzing the pricing behavior of different agricultural commodities. We follow a Multivariate Generalized Autoregressive Conditional Heteroskedasticity (MGARCH) approach to evaluate the level of interdependence and volatility transmission across these major crops on a daily, weekly, and monthly basis.

This book provides fresh insights into concepts, methods and new research findings on the causes of excessive food price volatility. It also discusses the implications for food security and policy responses to mitigate excessive volatility. The approaches applied by the contributors range from on-the-ground surveys, to panel econometrics and innovative high-frequency time series analysis as well as computational economics methods. It offers policy analysts and decision-makers guidance on dealing with extreme volatility.

This paper was written to help bolster the case and present visual evidence demonstrating why it is important to seriously consider spatial soil fertility variability in Ghana and to promote area-specific fertilizer recommendations. Using geostatistical analysis of soil samples collected from farmer plots in three districts (Tamale Municipality, Savelugu-Nanton, and West Mamprusi in northern Ghana), the paper analyzes spatial variations in soil fertility. The results clearly show that there are variations in soil pH, organic matter content, and available phosphorous even at the community level, supporting the need for Ghana to seriously consider location-specific fertilizer recommendations.

The role of intellectual property rights (IPRs) has been extensively debated in the literature on technology transfers and agricultural production in developing countries. However, few studies offer cross-country evidence on how IPRs affect yield growth, for example, by incentivizing private-sector investment in cultivar improvement. We address this knowledge gap by testing technology diffusion patterns for six major crops using a unique dataset for the period 1961–2010 and an Arellano–Bond linear dynamic panel-data estimation approach. Findings indicate that both biological and legal forms of IPRs tend to promote yield gap convergence between developed and developing countries, although effects vary between crops.

This paper aims to empirically infer potential causal linkages between fruit and vegetable (F&V) production, individual F&V intake, household food security, and anemia levels for individual women caregivers of childbearing age. Using a unique and rich dataset recently collected from rural smallholder Ugandan households, we show that the use of a qualitative tool to measure household food insecurity is robust and applicable in other contexts. We also show, using robust econometric methods, that women living in F&V-producer households have a significantly higher intake of F&Vs than those living in nonproducer households. Furthermore, F&V-producer households are potentially more food secure, and women caregivers in producer households have significantly higher levels of hemoglobin, rendering the prevalence rates of anemia lower among F&V-producer households. We argue that these effects, modest as they are, could be further improved if there were deliberate efforts to promote the intensification of smallholder F&V production.

Increasingly, women’s property rights are seen as important for both equity and efficiency reasons. While there has been debate in the literature about women are better off with individual rights in contrast to rights jointly with their husband, little empirical work has analyzed this question. In this paper, the relationship of women’s individual and joint property ownership and the level of women’s input into household decisionmaking is explored with data from India, Mali, Malawi, and Tanzania. In the three African countries, women with individual landownership have greater input into household decisionmaking than women whose landownership is joint; both have more input than women who are not landowners. The relationship with other household decisions is more mixed, as is the relationship between housing and input into household decisionmaking. No similar relationship is found in Orissa, India.

This paper estimates the potential effects of achieving the agricultural goals set out in Iraq’s National Development Plan (NDP) 2013–2017 using a dynamic computable general equilibrium model. The findings suggest that raising agricultural productivity in accordance with the NDP may more than double average agricultural growth rates and add an average of 0.7 percent each year to economywide gross domestic product during the duration of the plan. As a consequence, the economy not only diversifies into agriculture, but agricultural growth also lifts growth in the food processing and service sectors. Achieving the yield targets for cereals (especially wheat) and for fruits and vegetables will have the largest impact on economic growth and household incomes. Household incomes will rise by an estimated 3.3 percent annually. This increase in household incomes will benefit the poorest households and female-headed urban households the most due to a combination of lower food prices and higher incomes from labor and land. Reaping these benefits from agricultural growth will critically depend on the implementation of policies and investments to ensure that additional agricultural produce can be marketed efficiently domestically and compete with imports.

Present in soil and water, humic substances are the most widespread organic compounds, naturally occurring from a physical, chemical, and microbiological transformation of biomolecules. They represent about 25% of the total organic carbon on the Earth and comprise up to 75% of the dissolved organic carbon in water, making them important for multiple environmental processes in both soil and aquatic systems. Despite many decades of extensive study, the formation mechanisms of humic substances are still a subject of discussion and controversy. This book examines the dynamics of humic substances, their physicochemical and biological properties, and methods for their extraction and characterization. The book also sheds light on recent advances and applications of humic substances in agriculture, environment, industry, and medicine.

While an emerging literature cites weather shocks as major determinants of migration, scant evidence exists on how such migration impacts the labor markets of receiving communities in developing countries. We address this knowledge gap by investigating the impact of weather-driven internal migration on labor markets in a post-conflict country, Nepal, using household survey data in 2003 and 2010.

This paper is part of four country case studies that take a detailed look at public expenditures in agriculture, and at how the data on expenditures are captured in government financial and budget accounts. The objective of these studies is to unpack the black box of public expenditure statistics reported in various cross-country datasets, and ultimately to enable the use of existing government accounts to identify levels and compositions of government agriculture expenditures, with better understanding of what these data are in fact accounting for.