Sedimentologi og pedologi

The Discovery of the calcareous Ioffe Drift in the SW Atlantic in 2010 opens new perspectives in the contourite theory. Although demonstrating similar behavior relative to bottom water dynamics, rather rare and poorly studied calcareous contourites differ from their terrigenous analogs in origin, grain-size distribution, chemical and mineral composition of sedimentary particles. The detailed multidisciplinary study of the Ioffe Drift produces new knowledge on biogenic contourites deposited in pelagic realm, in conditions of low biological productivity and terrigenous material supply, under the influence of the Antarctic Bottom Water flow from the Vema Channel. The major intervals of prevailing erosion are inferred on the drift from 2.51/2.59 to 1.9 Ma and from 1.6 to 0.81 Ma thus indicating strong paleoceanographic changes most likely associated with the reorganization of deep-sea circulation and increased bottom water production in the Southern Ocean during the Early Pleistocene and,in particular, around the Mid-Pleistocene Transition.

Conventional tillage and burning crop residues has degraded the soil resource base and intensified soil degradation with concomitant decrease in crop production capacity. The emerging issue of global warming coupled with greenhouse gases emissions has further aggravated the scenario. Conservation agriculture helps in reducing many negative effects of conventional agriculture such as soil erosion, soil organic matter decline, water loss, soil physical degradation, and fuel use. Conservation Agriculture helps improve biodiversity in the natural and agro-ecosystems. Complemented by other good agricultural practices including the use of quality seeds, integrated pest, nutrient and water management, Conservation Agriculture provides a base for sustainable intensification of the agricultural production system. Moreover, the yield levels in Conservation Agriculture systems are higher than traditional intensive tillage systems with substantially less production costs.This book provides comprehensive understanding of the subject with topics related to climate change mitigation strategies, approaches and impact of conservation agriculture on natural resource management.This book is co-published with NIPA. Taylor and Francis does not sell or distribute its print and electronic editions in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.

Peanut is an important crop in the semi-arid regions of the world. Both, irrigation and well water can provide the water necessary for it. It is a nutritious seed nut crop and has manyfold uses. As such, research on this crop is imperative.This book reviews physiological aspects, keeping in mind the changing agroclimatic conditions. Growth, development and yield are described on the basis of cellular and morphological manifestations. Being a C3 plant, the photosynthesis and respiration in peanuts is critically viewed specially under varying environment conditions and genotypes. The study of nitrogen assimilation and biological nitrogen fixation have been presented in light of the prevalent environmental and gene effects. The role of plant growth regulators in peanuts is elaborated on, stating up-to-date mode of actions. Special emphasis has been given to mechanisms of abiotic stress effects. The chapters (13) are arranged on the basis of physiology, cellular structure, biochemistry, molecular and genomics concepts.

The Impact of Nanoparticles on Agriculture and Soil, part of the Nanomaterials-Plant Interaction series, contributes the most recent insights into understanding the cellular interactions of nanoparticles in an agricultural setting, focusing on current applications and means of evaluating future prospects. In order to ensure and improve the biosafety of nanoparticles, it is a primary concern to understand cellular bioprocess like nanomaterial's cellular uptake and their influence on cellular structural, functional and genetic components. This book addresses these and other important aspects in detail along with showcasing their applications in the area of agriculture. With an international team of authors, and experienced editors, this book will be valuable to those working to understand and advance nanoscience to benefit agricultural production and human and environmental welfare. In-depth knowledge of these bioprocess will enable researchers to engineer nanomaterials for enhanced biosafety.

Organic Farming: Global Perspectives and Methods, Second Edition provides the core definition and concepts of organic farming, also addressing current challenges and goals. The book provides a comprehensive resource, from sustainability to influences on the ecosystem, including the significance of seed, soil, water and weed management, and other important aspects. In addition, it presents advancements in the field and insights on the future. This fully revised and updated edition expands coverage to include important economic considerations, understanding the influence of nanotechnology on organic farming, vertical farming, organic farming and livestock management, as well as the future of organic farming. Written by a team of global experts to provide current concepts of organic farming, this resource is valuable for researchers, graduate students, and post-doctoral fellows from academia and research institutions.