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A deficiency of one or more of the eight plant micronutrients (boron, chlorine, copper, iron, manganese, molybdenum, nickel and zinc) will adversely affect both the yield and quality of crops. Micronutrient deficiencies in crops occur in many parts of the world, at various scales (from one to millions of hectares), but differences in soil conditions, climate, crop genotypes and management, result in marked variations in their occurrence. The causes, effects and alleviation of micronutrient deficiencies in crops in: Australia, India, China, Turkey, the Near East, Africa, Europe, South America and the United States of America, are covered, and these are representative of most of the different conditions under which crops are grown anywhere in the world. Links between low contents of iodine, iron and zinc (human micronutrients) in staple grains and the incidence of human health problems are discussed, together with the ways in which the micronutrient content of food crops can be increased and their bioavailability to humans improved. Detailed treatment of topics, such as: soil types associated with deficiencies, soil testing and plant analysis, field experiments, innovative treatments, micronutrients in the subsoil, nutrient interactions, effects of changing cropping systems, micronutrient budgets and hidden deficiencies in various chapters provides depth to the broad coverage of the book. This book provides a valuable guide to the requirements of crops for plant micronutrients and the causes, occurrence and treatment of deficiencies. It is essential reading for many agronomy, plant nutrition and agricultural extension professionals.

Crops --- soil fertility --- Mineral nutrients --- Metallic elements --- mineral deficiencies --- Nutrient availability --- public health --- Nutrition surveillance --- world

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This book presents a comprehensive scientific overview of the components and processes that underpin the biological characteristics of soil fertility. It demonstrates the interdependence of soil biological fertility with physical and chemical characteristics of soil. The book highlights the enormous diversity of life in soil and the resulting effects that management of land can have on the contribution of this diverse community to soil fertility in an agricultural context. It is becoming more relevant to explore soil biological processes in terms of their contribution to soil fertility.

Soil biology. --- Soil fertility. --- Land use. --- Sustainable agriculture. --- Sols --- Utilisation du sol --- Agriculture durable --- Biologie --- Fertilité --- Environment. --- Soil Science & Conservation. --- Soil conservation. --- Plant science. --- Botany. --- Soil science. --- Plant Sciences. --- Low-input agriculture --- Low-input sustainable agriculture --- Lower input agriculture --- Resource-efficient agriculture --- Sustainable farming --- Agriculture --- Alternative agriculture --- Soils --- Fallowing --- Fertilizers --- Soil productivity --- Biology --- Natural history --- Land --- Land utilization --- Use of land --- Utilization of land --- Economics --- Land cover --- Landscape assessment --- NIMBY syndrome --- Fertilization --- Fertilizer movement --- Conservation of soil --- Erosion control, Soil --- Soil erosion --- Soil erosion control --- Agricultural conservation --- Soil management --- Botanical science --- Phytobiology --- Phytography --- Phytology --- Plant biology --- Plant science --- Plants --- Control --- Prevention --- Conservation --- Pedology (Soil science) --- Earth sciences --- Floristic botany --- Soil Science. --- Plant Science.