Instant Insights: Advances in fertilisers and fertiliser technology
About this ebook
The first chapter describes features of field crop sprayers for precision agriculture, including control of delivered dose, spatial resolution, matching physical characteristics of sprays to target requirements and minimising drift and exposure of systems outside the treatment area.
The second chapter reviews the range of system inputs that are used to inform site-specific nutrient management systems. The chapter also includes examples from the Midwestern and Western regions of the United States to illustrate system processes and outputs.
The third chapter discusses the history, current status, and future needs of fertiliser developments in light of the goal of global sustainability for both agriculturally advanced and deficient areas. It reviews developments in using efficient fertilisers sources using proper techniques of rate, placement, and timing to meet the needs of advancing yields of modern crop cultivars.
The final chapter reviews the latest research on the ways that fertigation can be used to optimise the fertiliser application process, focussing on the ‘4Rs’ principle. The chapter discusses nutrient consumption curves and supply, optimising irrigation efficiency, as well as the use of models and decision support systems to support fertigation systems.
About the author
Bryan G. Hopkins is a Professor at Brigham Young University and a Certified Professional Soil Scientist. He is the Coordinator for the Soil Science Society of America--North American Proficiency Testing Program. He has degrees from Ricks College, Brigham Young University, and Kansas State University in Agronomy & Horticulture with specialties in soil biophysical chemistry and plant nutrition. He has published dozens of peer reviewed manuscripts and book chapters and hundreds of research reports and given countless presentations.
Dr Asher Bar-Tal is a Senior Researcher at the Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization (ARO, the Volcani Center) of Israel. In 1987 he earned Ph.D. from The Hebrew University of Jerusalem. From 2011 to 2013 he served as the Chairman of the Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil, Water and Environmental Sciences, The Volcani Center, ARO. Dr Bar-Tal currently serves as the president of the Israeli Society of Soil Science. His research interests focus on soil chemistry, plant nutrition and fertilization of crops.
