Food security and population health and well being.

Global Food Security—Introduction

From big to small: the significance of smallholder farms in the global food system

Food vs Biofuel

Aggregate estimates of food expenditure are consistent with such a possibility, implying income/expenditure elasticities close to one. However, the high degree of aggregation at which such estimates are made means that the considerable increase in price per nutrient as income increases is ignored, and the nutrient elasticities are therefore overstated. Estimates for a rural south Indian sample indicate that this bias is considerable and that the true nutrient elasticities with respect to income may be close to zero.

Agriculture production is directly dependent on climate change and weather. Possible changes in temperature, precipitation and CO2 concentration are expected to significantly impact crop growth and ultimately we lose our crop productivity and indirectly affect the sustainable food availability issue. The overall impact of climate change on worldwide food production is considered to be low to moderate with successful adaptation and adequate irrigation. Climate change has a serious impact on the availability of various resources on the earth especially water, which sustains life on this planet. The global food security situation and outlook remains delicately imbalanced amid surplus food production and the prevalence of hunger, due to the complex interplay of social, economic, and ecological factors that mediate food security outcomes at various human and institutional scales. Weather aberration poses complex challenges in terms of increased variability and risk for food producers and the energy and water sectors. Changes in the biosphere, biodiversity and natural resources are adversely affecting human health and quality of life. Throughout the 21st century, India is projected to experience warming above global level. India will also begin to experience more seasonal variation in temperature with more warming in the winters than summers. Longevity of heat waves across India has extended in recent years with warmer night temperatures and hotter days, and this trend is expected to continue. Strategic research priorities are outlined for a range of sectors that underpin global food security, including: agriculture, ecosystem services from agriculture, climate change, international trade, water management solutions, the water-energy-food security nexus, service delivery to smallholders and women farmers, and better governance models and regional priority setting. There is a need to look beyond agriculture and invest in affordable and suitable farm technologies if the problem of food insecurity is to be addressed in a sustainable manner. Introduction Globally, agriculture is one of the most vulnerable sectors to climate change. This vulnerability is relatively higher in India in view of the large population depending on agriculture and poor coping capabilities of small and marginal farmers. Impacts of climate change pose a serious threat to food security. “Food security exists when all people, at all times, have physical and economic access to sufficient, safe and nutritious food that meets their dietary needs and food preferences for an active and healthy life” (World Food Summit, 1996). This definition gives rise to four dimensions of food security: availability of food, accessibility (economically and physically), utilization (the way it is used and assimilated by the human body) and stability of these three dimensions. According to the United Nations, in 2015, there are still 836 million people in the world living in extreme poverty (less than USD1.25/day) (UN, 2015). And according to the International Fund for Agricultural Development (IFAD), at least 70 percent of the very poor live in rural areas, most of them depending partly (or completely) on agriculture for their livelihoods. It is estimated that 500 million smallholder farms in the developing world are supporting almost 2 billion people, and in Asia and sub-Saharan Africa these small farms produce about 80 percent of the food consumed. Climate change threatens to reverse the progress made so far in the fight against hunger and malnutrition. As highlighted by the assessment report of the Intergovernmental Panel on Climate change (IPCC), climate change augments and intensifies risks to food security for the most vulnerable countries and populations. Few of the major risks induced by climate change, as identified by IPCC have direct consequences for food security (IPCC, 2007). These are mainly to loss of rural livelihoods and income, loss of marine and coastal ecosystems, livelihoods loss of terrestrial and inland water ecosystems and food insecurity (breakdown of food systems). Rural farmers, whose livelihood depends on the use of natural resources, are likely to bear the brunt of adverse impacts. Most of the crop simulation model runs and experiments under elevated temperature and carbon dioxide indicate that by 2030, a 3-7% decline in the yield of principal cereal crops like rice and wheat is likely in India by adoption of current production technologies. Global warming impacts growth, reproduction and yields of food and horticulture crops, increases crop water requirement, causes more soil erosion, increases thermal stress on animals leading to decreased milk yields and change the distribution and breeding season of fisheries. Fast changing climatic conditions, shrinking land, water and other natural resources with rapid growing population around the globe has put many challenges before us (Mukherjee, 2014). Food is going to be second most challenging issue for mankind in time to come. India will also begin to experience more seasonal variation in temperature with more warming in the winters than summers (Christensen et al., 2007). Climate change is posing a great threat to agriculture and food security in India and it's subcontinent. Water is the most critical agricultural input in India, as 55% of the total cultivated areas do not have irrigation facilities. Currently we are able to secure food supplies under these varying conditions. Under the threat of climate variability, our food grain production system becomes quite comfortable and easily accessible for local people. India's food grain production is estimated to rise 2 per cent in 2020-21 crop years to an all-time high of 303.34 million tonnes on better output of rice, wheat, pulse and coarse cereals amid good monsoon rains last year. In the 2019-20 crop year, the country's food grain output (comprising wheat, rice, pulses and coarse cereals) stood at a record 297.5 million tonnes (MT). Releasing the second advance estimates for 2020-21 crop year, the agriculture ministry said foodgrain production is projected at a record 303.34 MT. As per the data, rice production is pegged at record 120.32 MT as against 118.87 MT in the previous year. Wheat production is estimated to rise to a record 109.24 MT in 2020-21 from 107.86 MT in the previous year, while output of coarse cereals is likely to increase to 49.36 MT from 47.75 MT. Pulses output is seen at 24.42 MT, up from 23.03 MT in 2019-20 crop year. In the non-foodgrain category, the production of oilseeds is estimated at 37.31 MT in 2020-21 as against 33.22 MT in the previous year. Sugarcane production is pegged at 397.66 MT from 370.50 MT in the previous year, while cotton output is expected to be higher at 36.54 million bales (170 kg each) from 36.07. This production figure seem to be sufficient for current population, but we need to improve more and more with vertical farming and advance agronomic and crop improvement tools for future burgeoning population figure under the milieu of climate change issue. Our rural mass and tribal people have very limited resources and they sometime complete depend on forest microhabitat. To order to ensure food and nutritional security for growing population, a new strategy needs to be initiated for growing of crops in changing climatic condition. The country has a large pool of underutilized or underexploited fruit or cereals crops which have enormous potential for contributing to food security, nutrition, health, ecosystem sustainability under the changing climatic conditions, since they require little input, as they have inherent capabilities to withstand biotic and abiotic stress. Apart from the impacts on agronomic conditions of crop productions, climate change also affects the economy, food systems and wellbeing of the consumers (Abbade, 2017). Crop nutritional quality become very challenging, as we noticed that, zinc and iron deficiency is a serious global health problem in humans depending on cereal-diet and is largely prevalent in low-income countries like Sub-Saharan Africa, and South and South-east Asia. We report inefficiency of modern-bred cultivars of rice and wheat to sequester those essential nutrients in grains as the reason for such deficiency and prevalence (Debnath et al., 2021). Keeping in mind the crop yield and nutritional quality become very daunting task to our food security issue and this can overcome with the proper and time bound research in cognizance with the environment. Threat and challenges In recent years, climate change has become a debatable issue worldwide. South Asia will be one of the most adversely affected regions in terms of impacts of climate change on agricultural yield, economic activity and trading policies. Addressing climate change is central for global future food security and poverty alleviation. The approach would need to implement strategies linked with developmental plans to enhance its adaptive capacity in terms of climate resilience and mitigation. Over time, there has been a visible shift in the global climate change initiative towards adaptation. Adaptation can complement mitigation as a cost-effective strategy to reduce climate change risks. The impact of climate change is projected to have different effects across societies and countries. Mitigation and adaptation actions can, if appropriately designed, advance sustainable development and equity both within and across countries and between generations. One approach to balancing the attention on adaptation and mitigation strategies is to compare the costs and benefits of both the strategies. The most imminent change is the increase in the atmospheric temperatures due to increase levels of GHGs (Green House Gases) i.e. carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and chlorofluorocarbons (CFCs) etc into the atmosphere. The global mean annual temperatures at the end of the 20th

This study contributes to the literature on the impact of farmer contact with agricultural extension services on farm productivity, drawing on a unique panel sample of households residing in three resettlement areas of rural Zimbabwe. It pays particular attention to the potential confounding effects of the biases identified by Birkhaeuser, Evenson, and Feder. Specifically, we exploit the longitudinal nature of our data to estimate the impact of extension on the value of crop production per hectare, with and without controls for unobservable household fixed effects. The attraction of this estimator is that the differencing process rids the specification of the correlation between extension and the disturbance term. We find that after controlling for innate productivity characteristics and farmers' ability using household fixed- effects estimation, access to agricultural extension services, defined as receiving one or two visits per agricultural year, raises the value of crop production by about 15%. This parameter estimate is statistically significant. Another unique feature of these data are, for a subsample, extension worker assessments of farmers' ability. We find that farmers with above-average ability are indeed more productive, producing 40%-50% higher output per hectare of cropped area. Controlling for innate productivity using locality dummies, farm plot characteristics, and farmers' ability using these assessments of ability, we continue to obtain a positive association between access to extension and productivity, an association that is equal in magnitude to our fixed-effects results. However, we also find considerable variability in these parameter estimates across individual crop years.

This article focuses on the link between agricultural productivity and health and nutrition status of peasants in Ethiopia. The data come from the first round of the Ethiopian Rural Household Survey conducted in 1994. The sites selected were those in which farmers practice ox-plow cultivation of cereals. A stochastic frontier approach was adopted for the agricultural production. The findings of the study show that the distance to the source of water as well as nutrition and morbidity status affect agricultural productivity. The market wage rate is also very responsive to the weight-for-height as well as the body-mass index and height. In a context where separability between consumption and production decisions of the household is rejected elasticities of labor productivity with respect to nutritional status are noted to be strong and similar in technology estimates and wage equations. Moreover returns to investment in nutrition are clearly high in the Ethiopian context. Overall the results indicate substantial loss in output due to technical inefficiency even after accounting for the health and nutrition of workers.

In Sub-Saharan Africa the food supply, determined by the performance of a largely subsistence and poorly structured agriculture, remains dependent on the climatic conditions. In such situation, the training on food and nutrition and the need of curricula review processes in agricultural higher education is an important issue. The present study aimed to assess the embodiment of the concept of food security in the agricultural department of the NAZI BONI University. The department was audited using the AIFSHE tool, and a total of fifty persons attended the audit. A survey was also carried out at university and research levels where three hundred and twenty eight persons responded, and a focus group discussion was done during a workshop where a total of one hundred and fifteen stakeholders participated. The results of the audit showed good results, about the network of the university and the educational methods and pedagogy. However, the vision and strategy for food security in the country are implicit and not well defined in the university documents. The surveys reported that the curricula and research topics contained very few aspects of food security. The workshop proposed that students should be allowed in the design of food security curricula and that the food security mission at university level should be clearly defined in an integrated coordinated manner by involving many ministries, to ensure a well-balanced approach to its dimensions. With respect to research, it was highlighted that the university could focus its research activities in the area of agricultural extension in order to contribute to improving food consumption at household level and the population welfare, with the best utilisation of national funding. The findings of the study imply that agricultural higher education has a key role to play to contribute to the achievement of food and nutrition security in the country, and therefore, policy makers should give opportunities and facilities to these institutions.

Sustainable agricultural inputs are essential for enhancing food security, promoting development, and ensuring resilience in rapidly emerging economies; however, studies utilizing the advanced autoregressive distributed lag (ARDL) approach to investigate their impact on agriculture-driven economic growth remain limited. This research aims to fill this gap by employing a dynamic ARDL simulation model to analyze the relationship between sustainable agricultural inputs and economic growth in the agricultural sector, utilizing annual time series data spanning from 1983 to 2023. The analysis includes unit root tests, which affirm the stationarity of all variables, and the ARDL bounds test, which reveals a significant long-run cointegrating relationship among them. Our findings indicate that the expansion of irrigated areas and increased usage of chemical fertilizers contribute significantly to agricultural economic growth in both the short and long run, while agricultural mechanization only positively affects growth in the short run. Notably, the variable representing crop-sown land does not exhibit a statistically significant impact on agricultural economic growth across both time frames. Furthermore, the results from novel DYARDL simulations, which assess the implications of 10% positive and negative shocks, further substantiate both short-run and long-run analysis outcomes. The insights generated from this study highlight the critical role that sustainable agricultural inputs play in agricultural economic dynamics and provide evidence-based recommendations for fostering resilient, low-input systems that support global food security and agro-environmental sustainability.

This discussion explores the opportunities and challenges in enhancing food production and security in the context of climatic variability in Sub Saharan Africa. The promotion of sustainable use of plant and animal products with emphasis on satisfying basic human needs, improving people’s standard of living, enhancing food security and reducing poverty have taken a center stage in Sub Saharan Africa. However, the efforts in this direction are being impacted negatively by climate change, through animal and crop production which have not been spared due to the natural disasters and environmental challenges which have affected all regions of Sub Saharan Africa indiscriminately. Climate is a particularly important driver of food production systems performance at the agriculture end of the food chain. It can affect the quantities and types of food produced as well as production-related income especially for the poor resource farmers. In order to be able to adequately address food production and security in the context of climate, there is need for the region to carry out thorough climatic vulnerability and adaptation assessments. Supporting research and training of experts to carry out vulnerability and adaptation assessments on crop and livestock production is crucial in order for respective countries to develop climate change adaptation measures to meet the obligation on food production and security. Sub Saharan Africa’s agro-ecological regions are variable and need to develop specific adaptive measures to reduce vulnerability to climate change. Due to the changing climatic conditions which the continent has already witnessed many severe climatic induced vulnerability such as decline in rainfall amounts and intensity, reduced length of rain season and increasing warm and occasionally very hot conditions has affected food production and security. Crop and livestock production systems will need to adapt to higher ambient temperatures, lower nutritional value of feed resources and new diseases and parasites occurrence. It can be seen that the present crop and livestock production systems based on pastoral or rangeland grazing husbandry systems, ecological destruction through climatic variability and overgrazing due to high stocking rates in areas where feed and water has been compromised due to high temperatures caused by climate change does not augur well for future livestock productivity. The understanding of climate change variables and their impacts is the first step in climate change research and prerequisite for defining appropriate adaptive responses by local crop and livestock farmers. Sustainable crop and livestock production supporting rural development should be compatible with the goals of curbing the effects of climate change. Production priorities should be directed towards promoting local crop and livestock genetic resources by providing comprehensive research support services on the impact of climate change. Both crops and livestock play important roles in farming systems, as they offer opportunities for risk coping, farm diversification and intensification, and provide significant livelihood benefits and food security. The discussion therefore, concludes that the effectiveness of biophysical responses of crop and livestock production systems to specific environmental challenges that are anticipated as a result of climate change, and then the range of adaptive measures that might be taken by local producers to ameliorate their effects will be the prerequisite for defining appropriate societal responses and meet food security targets.

This paper reviews various studies which have provided a description and possible explanation to patterns of innovation adoption in the agricultural sector. The survey points out that the tendency of many studies to consider innovation adoption in dichotomous terms (adoption/nonadoption) may not be appropriate in many cases where the actual decisions are defined over a more continuous range. More attention needs to be given to the socio-cultural and institutional environment in area studies so that their interrelation with economic factors affecting adoption can be inferred. The presence of several interrelated innovations is another aspect that needs to be considered more carefully in future research, since a number of simultaneous decisions may be involved. Furthermore, the possibility of regular sequential patterns in adopting components of a new technological package should be specifically addressed in future studies. Finally, the impact of differential adoption rates on land holding distribution merits attention in future research.

Food security is considered as a basic right of human beings as it is also clear from the Agenda of SDGs. Target 2.1 of Sustainable Development Goal focuses on eliminating hunger and food insecurity and target 2.2 is related to the ending of all forms of malnutrition. The present study highlights the role of agricultural exports, income inequality and economic growth for food security of 89 developing countries by using panel data from the years 1990 to 2020. Employing MMQR, it analyses four dimensions of food security: availability, access, stability and utilization. Key findings include a negative impact of agricultural exports and income inequality on food security in case of developing countries. The results reveal a positive and highly significant impact of economic growth on the food security. The study recommends interventions to reduce reliance on agricultural exports and policies to reduce income inequality and for achieving sustainable economic growth.

Publisher Summary This chapter discusses the financial development and economic growth in underdeveloped countries. An observed characteristic of the process of economic development over time, in a market-oriented economy using the price mechanism to allocate resources, is an increase in the number and variety of financial institutions and a substantial rise in the proportion not only of money but also of the total of all financial assets relative to GNP and to tangible wealth. Typical statements indicate that the financial system somehow accommodates—or, to the extent that it malfunctions, it restricts—growth of real per capita output. Such an approach places emphasis on the demand side for financial services; as the economy grows it generates additional and new demands for these services, which bring about a supply response in the growth of the financial system. In this view, the lack of financial institutions in underdeveloped countries is simply an indication of the lack of demand for their services.

This study tests the relationship between Rwandan economic growth with FDI in agriculture, employment in agriculture, and population in rural area between 1990 and 2017. The paper used ARDL “bounds” test method to analyze the co-integration with the constant level relationship of variables. Co-integration coefficients they are estimated by ARDLs model where short run coefficients with the ECM model they are estimated after the verification of long runs (co-integration) equilibrium relationship of economic growth within variables. We find that Rwandan economic growth is depends to foreign direct investment at the present time while agriculture has become a growth engine for economic development. Causality goes from population of rural areas for economic growth, while FDI and employment in agriculture has no causal relationship with economic growth. The paper recommends that Rwanda should have the absorptive capabilities of advanced agriculture technology to fully utilize of FDI benefit. Rwandan's government should promote policies in macroeconomic in order to encourage the FDIs, as well as promoting economic growth in agriculture.

Food security, defined by the 1996 World Food Summit as existing ?when all people at all times have access to sufficient nutritious food to maintain a healthy and active life?, has been identified as a major issue for Southeast Asian countries. In the majority of developing countries the most effective means of ensuring food security is broad-based economic growth in agriculture. Public support for agriculture has waned significantly since the mid-1980s. Australia has been a leader in the recent resurgence of aid investment in agriculture. This has involved lifting investment in agricultural research in developing countries, through ACIAR, and AusAID programs, in particular in the Mekong countries, South Asia and Africa.