This book presents an exhaustive analysis of the trends in the development and use of natural and synthetic polymer systems aimed at sustainable agricultural production. The polymers have allowed the development of controlled and released systems of agrochemicals such as pesticides, fertilizers and phytohormones through micro and nanoencapsulated systems, which protect and stimulate the growth of crops at low costs and without damage to the environment. Hydrogel systems from natural and synthetic polymers have also had their place in the agricultural industry, since they allow to maintain the humidity conditions of the crops for their correct development in drought times. Mulch films made of polymers have also become important in the control of weeds and pests in crops, as well as the use of edible coatings applied to fruits and vegetables during post-harvest, which reduce the losses of these perishable foods. Currently, the systems indicated, as well as others, are already used on a large scale. However, research studies in this area have been limited compared to other polymer applications. This book collects useful information for researchers, students and technologies related to the polymer technology and agri-food production. In this book, world-renowned researchers have participated, including associate editors of important journals, as well as researchers working in the area of research and development (R&D) of leading agri-food industries in the manufacture of agricultural inputs.

Given the high prevalence of undernutrition among children in low income countries and the associated high human and eco-nomic costs (Hoddinott et al. 2013), improving nutritional out-comes must be an urgent priority. Improving nutrition is high on the policy agenda of the government of Ethiopia, as stated in the Growth and Transformation Plan II, which aims to reduce young child stunting levels from 40 percent in 2014/15 to 26 percent in 2019/2020. Lack of access to diverse diets is one of the underlying factors contributing to chronic undernutrition (Arimond and Ruel 2004, UNICEF 1998). Despite recent improvements, child stunting in Ethiopia remains widespread (CSA and ICF International 2017). Moreover, Ethiopian children consume one of the least diverse diets in sub-Saharan Africa (Hirvonen 2016). At the household level, food consumption baskets are dominated by cereals and pulses, while the consumption of animal-source foods and fruits and Vitamin A-rich vegetables is rare, especially in rural areas.1 Such monotonous diets are regarded as a major contributor to non-communicable diseases in Ethiopia (Melaku et al. 2016). Recent research suggests that the poor dietary diversity in ru-ral areas can be explained, at least partly, both by limited knowledge about the health benefits of diverse diets and by poor access to food markets. Households in areas in which food crop production is not very diverse but which have good access to mar-kets are found to have more diverse diets than do households in such areas but which have poor access to markets and, so, de-pend primarily on own-production for the food they consume.2 Yet, even with sufficient access to markets and knowledge on the benefits of diverse diets, poor households may simply be un-able to afford nutritionally rich foods (Warren and Frongillo 2017). Indeed, prices and affordability of nutritious foods remains a neglected area of research in efforts to understand poor dietary diversity in Ethiopia and elsewhere.3 In the analysis described here, we explore how prices and, consequently, the affordability of nutritious food have changed over the last decade in Ethiopia.

Food ingredients are important molecules of the most diverse chemical classes responsible for conferring nutrition, stability, color, flavor, rheological and sensorial characteristics, in addition to several other important uses in the food industry. In this way, the production routes of these ingredients have gained more and more attention from consumers and producing industries, who expect that, in addition to their technological properties, these ingredients are still obtained without synthetic means, with savings of natural resources and mainly with less environmental impact. This book is intended for bioengineers, biologists, biochemists, biotechnologists, microbiologists, food technologists, enzymologists, and related professionals/ researchers. • Explores recent advances in the valorization of agri-food waste into food ingredients • Provides technical concepts on the production of various food ingredients of commercial interest • Explores novel technologically advanced strategies for the extraction of bioactive compounds from food wastes • Presents important classes of food ingredients obtained from alternative raw materials • Presents sustainable food waste resources and management strategies • Presents different pretreatment technologies and green extraction methodologies to support a green environment in the circular economy concept. • Challenges in applications of re-derived bioactive compounds from food wastes in food formulations

Informed livestock-sector policy development and planning requires reliable and accessible information about the distribution and abundance of livestock. To that end, and in collaboration with the Environmental Research Group Oxford (ERGO), FAO has developed the “Gridded livestock of the world” spatial database: the first standardized global, subnational resolution maps of the major agricultural livestock species. This publication describes how available livestock data have been collected and then enhanced by statistical modelling to produce a digital, georeferenced global dataset. It also provides varied and extensive examples of some of the applications for which the data have been used. The publication is intended to provide a formal reference for the dataset and to stimulate further applications and feedback from those most concerned with the development of the livestock sector, be they policy-makers, researchers, producers or practitioners in livestock-sector development.