Overview

This book will address the major subsoil physical and chemical constraints and their implications to crop production; Plant growth is often restricted by adverse physical and chemical properties of subsoils yet these limitations are not revealed by testing surface soils and hence their significance in crop management is often overlooked. The major constraints can be physical or chemical. Physical limitations such as poor/nil subsoil structure, sandy subsoils that do not provide adequate water or gravelly subsoils and, etc. On the other hand, chemical constraints include acidity/alkalinity, high extractable Al or Mn, low nutrient availability, salts, boron toxicity and pyritic subsoils. Some of these constraints are inherent properties of the soil profile while others are induced by crop and soil management practices. This aim of this book is to define the constraints and discuss amelioration practices and benefits for crop production. This book will be of interest to readers involved with agriculture and soil sciences in laboratory, applied or classroom settings.  

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9783031003431

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Teogenes Oliveira  is currently a Professor at the Federal University of Viçosa, Brazil, having worked for several years at the Federal University of Ceará, where he continues to run a Postgraduate Program in Ecology and Natural Resources. His academic and scientific work is in the area of Soil Science, focusing especially on the study of soil and water management and conservation and agroecology, with emphasis on the management of soil organic matter and residues and their role in the quality of the soil and the environment.  He also develops academic and scientific activities that seek to evaluate the consequences of intensive soil use, together with the design and evaluation of more environmentally balanced agricultural systems, made possible through the understanding and application of concepts for reinforcing ecological processes and relationships. His expertise in the Brazilian semi-arid region has helped in generating data and in training people to work with both high and low external-input cultivation systems: irrigated systems, mixed cropping (agroforestry) systems, organic, and minimum tillage systems, all with a view to strengthening ecological processes and relationships. He has published 110 refereed journal papers, 18 book chapters and articles in proceedings, and edited 6 books. Richard Bell, who has been Professor of Land Management at Murdoch University since 2007,  is a specialist in soil fertility and crop management  with lecturing and research experience in Australia, Bangladesh, Brazil, Cambodia, China, India, Indonesia, Fiji,  Sri Lanka, Thailand and Vietnam. His interests are in management and fertility constraints associated with sandy, acid, salt-affected and degraded soils; nutrient cycling in farmland, rehabilitated land and forests; rehabilitation of degraded land; sustainable agricultural systems; Conservation Agriculture, and research for agricultural development. He has authored 222 refereed journal papers, 101 book chapters and articles in proceedings, and edited 15 books. Much of his published work has concerned the mineral nutrition of crop and plants and cropping systems intensification for smallholder farms. He has led and collaborated on international projects in Thailand (1984-89), China (1992-97), Cambodia (2004-present), Bangladesh (2006-present),  Vietnam (2007-2019), India (2015-present) and Laos (2017-present). He has supervised 70 PhD and MSc students.

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