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The purpose of this study is to examine the biophysical and socioeconomic impacts of climate change on maize production and food security in sub-Saharan Africa (SSA) using adapted improved maize varieties and well-calibrated and validated bioeconomic models.

Using the past climate (1950-2000) as a baseline, the study estimated the biophysical impacts of climate change in 2050 (2040-2069) and 2080 (2070-2099) under the A1B emission scenario and three nitrogen levels, and the socioeconomic impacts in 2050.

Climate change will affect maize yields across SSA in 2050 and 2080, and the extent of the impact at a given period will vary considerably between input levels, regions and maize mega environments (MMEs). Greater relative yield reductions may occur under medium and high-input intensification than under low intensification, in Western and Southern Africa than in Eastern and Central Africa and in lowland and dry mid-altitude than in highland and wet mid-altitude MMEs. Climate change may worsen food insecurity in SSA in 2050 through its negative impact on maize consumption and reduction in daily calorie intake. However, international trade has the potential to offset some of the negative impacts.

The study calibrated and applied bioeconomic models to estimate the biophysical and socioeconomic impact of climate change on maize production at fine resolution. The results could be used as a baseline to evaluate measures that will be applied to adapt maize to the future climate in SSA.

Food security was investigated in three villages in rural Ethiopia for smallholder farmers growing staple crops and coffee. Field surveys were conducted through extensive interviews of head of households in three villages in the coffee-growing region of Oromia. We computed basic descriptive statistics and estimated a discrete variable model of the food security status of households and its socioeconomic determinants. We found that commercial input used among smallholders remains sporadic and pricey. Most households produce coffee as a key source of cash income, and rely on a major coffee cooperative to market their coffee. The coffee cooperative helps with transportation costs, eases market participation decisions, and provides better and stable prices. Many farmers rely on credit and banking services offered by the cooperative. These services contribute to food security. Most food-insecure households tend to be headed by females and have severe land constraints. These households also tend to work outside of their own farm more often at lower-return activities than do food-secure households. Despite the fast growing economy of Ethiopia, smallholder households face considerable impediments to improve their economic livelihoods and market participation due to limited land and poor transportation and telecommunications infrastructures. Policies lowering the unit cost and increasing the local availability of commercial inputs for agriculture would be useful to boost staple food production and income generation of smallholders systematically. Better infrastructures and easier access to land would help mitigate food insecurity.

There is much evidence in the literature showing the benefits of input market participation on farmers’ welfare. The same is true for participation in marketing. However, there are very few studies on the expected benefit of input market participation and marketing. This study fills this gap by examining the issue in the Senegalese context for food and cash crops.

The authors estimate a multinomial endogenous switching regression using a highly detailed 2017 agricultural survey in Senegal. They first identify factors that shape farmers’ decision to participate in the input market and marketing and then assess the impact of market participation choices on farmers’ profits.

The results show that the most profitable market participation regime depends on the crop under consideration. For food crops, joint participation in markets maximizes profit per hectare, while for groundnuts, the main cash crop in Senegal, participation in the input market is not necessary to maximize farm profit.

Using panel data would improve the quality of estimations (time-variant effects) and help to consider the role of risk in output and input markets.

This paper helps to characterize different profiles of farmers based on their market participation and crop choices and provide policymakers with recommendations for maximizing farmers’ profit.

Though many studies in the past dealt with the survival and growth of enterprises both in the local- and export-markets, less attention was given to the analysis of the duration of enterprises entry into the export-markets. The aim of this paper is, therefore, to analyze the duration of Ethiopian enterprises entry into the export-markets.

This paper used data collected from 848 enterprises through a cross-sectional survey method conducted by the World Bank in 2015. In order to estimate the average duration – the time that enterprises need to wait before entering into the export-markets and the associated factors – the authors used the mixture of non-parametric (Kaplan-Meier) and parametric (Weibull) models.

The non-parametric results show that enterprises are required to wait for an average of about eight years before entering into the export-markets after their establishment. In addition, foreign-owned enterprises were found to be faster in entering into the export-markets than their domestically owned counterparts. The parametric results revealed that enterprises’ product innovation, enterprises’ size and age, and custom and trade regulations are factors that curtail the durations of enterprises entry into the export-markets. On the other hand, enterprises’ operational costs, the size of enterprises’ locality, and enterprises’ location are factors that slow the durations of enterprises’ entry into the export-markets.

This study is the first to offer pioneering evidences on the duration (time in years) that Ethiopian enterprises need to wait before entering into the export-markets and the factors that affect the length of their waiting time.

This paper analysed survey data of 715 rice-producing households in China to assess the determinants of adoption of five mutually exclusive soil conservation practices (SCPs) and their impact on rice yield and chemical fertiliser use.

The multinomial endogenous treatment effects model was used to account for selection bias and endogeneity arising from both observed and unobserved heterogeneity.

Farms that adopted SCPs as a package experienced an increase in rice yield and decrease in chemical fertiliser use. Adoption of SCPs as a package led to a 12.0% increase in yield and 15.2% decrease in chemical fertiliser use; these results have policy implications for the non-point source pollution control in the agricultural sector. In contrast, adoption of straw retention only significantly reduced yield by 4.9% and increased chemical fertiliser use by 18.1%.

The authors evaluate and compare multi-type of SCPs, such as straw retention, deep tillage and use of organic fertiliser, separately or in combination, and their impacts on smallholder farmers’ rice yield and chemical fertiliser usage.

The farmers used several information sources to gather information about the climatic variability and modern agricultural practices to cope with climate change. The choice of adaptation strategies and the successful implication of adaptation strategies depend on accurate, timely information on the climate variability and precise technical details of adaptation strategies. By keeping the importance of climate information and agricultural extension information in the center, this study aims to conduct a micro-level evaluation of farmers’ choice of climate information, agriculture extension services and agricultural credit sources. This study’s primary objective is to understand how the different sources of climate information and agricultural extension influence farm household adaptation decisions.

This study has been conducted in three subs agro-climatic zone of the Middle Gangetic Plain region, which falls in India’s Bihar state. This paper has randomly selected seven districts from these three subs agro-climatic zone to collect the data. The analysis of this study is based on survey data collected from 700 farm households. This study has used descriptive statistics and a logistic regression model to assess the sources of climate information, agricultural extension and credit sources and how these sources influence farm households’ adaptation decisions.

The result of this study shows farmers are using different traditional (sharing experience, newspaper and radio), information and communication technology (mobile and TV) and institutional arrangements (agricultural officer and meteorological department) in the study area. The study’s finding identifies different farm households’ different sources and how these options farming farmers’ adaptation decisions. The study further revealed that institutional factors such as extension services and access to information on climate change increase the probability of adopting knowledge-intensive adaptation strategies such as soil conservation, water conservation, crop insurance and planting horticulture and vegetables.

The study has conducted a micro-level assessment of adaptation behavior at the local level to understand the factor influencing the adaptation decision. This study’s finding is useful in designing the appropriate policy framework for the farm household’s capacity building to enhance their technical skills and awareness toward the institutional arrangements.

This paper’s finding pointed out institutional arrangements’ requirement to improve adaptive capacity to make long-term strategic decisions to cope with climate change.

The purpose of this paper is to assess the magnitude of parent-adolescent communication on sexual and reproductive health (SRH) issues and its association with gender and premarital sexual practice among school adolescents of Woldia town.

School-based cross-sectional study was conducted on 368 unmarried secondary and preparatory school adolescents (15–19 years) in Woldia town. Simple random sampling was employed to select study participants. Self-administered questionnaire was used. Data were entered by EPI-Data version 3.0.2 and analyzed by using SPSS version 20.

In this study, 56.3% of school adolescents had parental communication on sexual and reproductive health issues. The result of this study showed that adolescents who had history of sexual intercourse where 64% less likely to communicate with parents on sexual and reproductive health issues (AOR: 0.36 95% CI: 0.20, 0.65), but there was no association between gender and sexual and reproductive health communication between adolescent and parent (AOR: 1.06, 95% CI: 0.64, 1.75).

Parent-adolescent communication about sexual matters is one of the means that encourages adolescents to adopt responsible sexual behavior. Many children in Africa are uncomfortable to have a communication about sexual and reproductive health issues with their parents because the subject is a taboo topic in most homes.

Using a recent rural farm household survey, the purpose of this paper is to investigate inclusiveness and effectiveness of agricultural cooperatives in Ethiopia.

The study employs a logit model to examine inclusiveness and an endogenous switching regression (ESR) model to evaluate the effectiveness of agricultural cooperatives.

The results show that agricultural cooperatives are less inclusive of land-poor and illiterate households. On the other hand, the estimated results indicate that cooperatives effectively improved agricultural performance and welfare of its member households – i.e. membership in cooperatives increases yield and income by 1.37 quintal/hectare and 1,804 birr, respectively. Moreover, the result shows that marketing cooperatives effectively increased marketed surplus of their members by 34 percent.

The study has important implications regarding the ways to improve the effectiveness and/or inclusiveness of agricultural cooperatives.

While accounting for the collective behavior of cooperatives, this study uses multiple outcome variables in examining the effectiveness of cooperatives in Ethiopia. Furthermore, this paper employs the ESR model and accounts for potential problems in estimating impact using non-experimental data.

This paper aims to review the current status of wheat production, farming systems, production constraints and wheat demand-supply chain analysis; the role of international and national breeding programs and their approaches in wheat genetic improvement including targeting mega environments, shuttle breeding, doubled haploids, marker-assisted selection and key location phenotyping; and future prospects and opportunities of wheat production in Sub Saharan Africa (SSA).

Relevant literature works have been used and cited accordingly.

Though traditionally wheat was not the leading staple crop in SSA, it is becoming an important food crop because of rapid population growth associated with increased urbanization and change in food preference for easy and fast food such as bread, biscuits, pasta, noodles and porridge. In 2013, total wheat consumption in SSA reached 25 million tons with import accounting for 17.5 million tons at a price of USD6 billion, while during the same period the region produces only 7.3 million tons on a total area of 2.9 million hectares. The low productivity (2t/ha) in the region is principally because of abiotic (drought and heat) and biotic (yellow rust, stem rust, septoria and fusarium) stresses which are increasing in intensity and frequency associated with climate change. Furthermore, increased cost of production, growing populations, increased rural-urban migration, low public and private investments, weak extension systems and policies, and low adoption rates of new technologies remain to be major challenges for wheat production in SSA. Wheat breeding in SSA is dominantly carried out by National Agricultural Research Systems, in partnership with the international research centers [International center for improvement of maize and wheat (CIMMYT) and International center for agricultural research in the dry areas (ICARDA)], to develop high yielding and widely adapted wheat genotypes with increased water-use efficiency, heat tolerance and resistance to major diseases and pests. Most of the cultivars grown in SSA are originated from the international research centers, CIMMYT and ICARDA.

This paper will help to promote available wheat technologies in SSA by creating awareness to wheat scientists, extension agents and policymakers.

This manuscript is an original review paper which has not been published in this form elsewhere.