Rattan Lal, PhD, is a distinguished university professor of soil science and director of the Carbon Management and Sequestration Center, The Ohio State University, and an adjunct professor of the University of Iceland. His current research focus is on climate-resilient agriculture, soil carbon sequestration, sustainable intensification, enhancing use efficiency of agroecosystems, and sustainable management of soil resources of the tropics. He received honorary degrees of Doctor of Science from Punjab Agricultural University (2001); the Norwegian University of Life Sciences, Aas (2005); Alecu Russo Balti State University, Moldova (2010); and the Technical University of Dresden (2015).He was president of the World Association of the Soil and Water Conservation (1987–1990); the International Soil Tillage Research Organization (1988–1991); the Soil Science Society of America (2005–2007); and is president-elect of the International Union of Soil Science. He was a member of the Federal Advisory Committee on U.S. National Assessment of Climate Change-NCADAC (2010–2013) and is a member of the SERDP Scientific Advisory Board of the US-DOE (2011–present); senior science advisor to the Global Soil Forum of the Institute for Advanced Sustainability Studies, Potsdam, Germany (2010–present); member of the Advisory Board of the Joint Program Initiative of Agriculture, Food Security and Climate Change (FACCE-JPI) of the European Union (2013–present); and chair of the Advisory Board of the Institute for Integrated Management of Material Fluxes and Resources of the United Nations University (UNU-FLORES), Dresden, Germany (2014–2017). Professor Lal was a lead author of IPCC (1998–2000). He has mentored 102 graduate students and 54 postdoctoral researchers, and hosted 140 visiting scholars.He has authored/coauthored 730 refereed journal articles and has written 12 and edited/coedited 58 books. In 2014, Reuter Thomson listed him among the world’s most influential scientific minds.B.A. Stewart, PhD, is director of the Dryland Agriculture Institute and a distinguished professor of soil science at West Texas A&M University, Canyon, TX. He is a former director of the USDA Conservation and Production Laboratory at Bushland, TX, past president of the Soil Science Society of America, and member of the 1990–1993 Committee on Long-Range Soil and Water Policy, National Research Council, National Academy of Sciences. He is a fellow of the Soil Science Society of America, American Society of Agronomy, Soil and Water Conservation Society, a recipient of the USDA Superior Service Award, a recipient of the Hugh Hammond Bennett Award of the Soil and Water Conservation Society, and was an honorary member of the International Union of Soil Sciences in 2008. In 2009, Dr. Stewart was inducted into the USDA Agricultural Research Service Science Hall of Fame. Dr. Stewart is very supportive of education and research on dryland agriculture. The B.A. and Jane Ann Stewart Dryland Agriculture Scholarship Fund was established in West Texas A&M University in 1994 to provide scholarships for undergraduate and graduate students with a demonstrated interest in dryland agriculture.

• Precision Agriculture, the Next Revolution. Historical Evolution of Precision Farming. Estimating Spatially Variable Soil Properties for Application in Precision Farming. Soil Sampling Strategies for Precision Agriculture. A Decision Support System for Fertilizer Management. Kriging and Soil Sampling for Precision Agriculture. Nutrient Management by Site-Specific Zones in Precision Agriculture. Variable Rate Aerial Application of Input in Precision Agriculture. Application of GPS and Sensors with Information Technology for Crop Protection. Precision Irrigation. Conservation –Oriented Precision Agriculture. Root-Water Uptake Model for Sustainable Irrigation. Irrigation Management by SWAT. Spatial and Temporal Variability in Soil Hydrologic Properties. Indicators of Crop Nitrogen Status. Optical Remote Sensing of Soil Chemical Quality. Top Dressing of Nitrogen Fertilizer by Optical Sensors. Soil Fertility Assessment by Infrared Spectroscopy. Mapping Soil Properties by Measuring Electrical Conductivity. Fuzzy Clustering Techniques for Establishing Management Zones. Indicator Kriging for Soil Fertility Evaluation. Field Scale Measurement for Soil Fertility Parameters. Precision Farming in China. Research and Development Priorities.

Rattan Lal, PhD, is a distinguished university professor of soil science and director of the Carbon Management and Sequestration Center, The Ohio State University, and an adjunct professor of the University of Iceland. His current research focus is on climate-resilient agriculture, soil carbon sequestration, sustainable intensification, enhancing use efficiency of agroecosystems, and sustainable management of soil resources of the tropics. He received honorary degrees of Doctor of Science from Punjab Agricultural University (2001); the Norwegian University of Life Sciences, Aas (2005); Alecu Russo Balti State University, Moldova (2010); and the Technical University of Dresden (2015).He was president of the World Association of the Soil and Water Conservation (1987–1990); the International Soil Tillage Research Organization (1988–1991); the Soil Science Society of America (2005–2007); and is president-elect of the International Union of Soil Science. He was a member of the Federal Advisory Committee on U.S. National Assessment of Climate Change-NCADAC (2010–2013) and is a member of the SERDP Scientific Advisory Board of the US-DOE (2011–present); senior science advisor to the Global Soil Forum of the Institute for Advanced Sustainability Studies, Potsdam, Germany (2010–present); member of the Advisory Board of the Joint Program Initiative of Agriculture, Food Security and Climate Change (FACCE-JPI) of the European Union (2013–present); and chair of the Advisory Board of the Institute for Integrated Management of Material Fluxes and Resources of the United Nations University (UNU-FLORES), Dresden, Germany (2014–2017). Professor Lal was a lead author of IPCC (1998–2000). He has mentored 102 graduate students and 54 postdoctoral researchers, and hosted 140 visiting scholars.He has authored/coauthored 730 refereed journal articles and has written 12 and edited/coedited 58 books. In 2014, Reuter Thomson listed him among the world’s most influential scientific minds.B.A. Stewart, PhD, is director of the Dryland Agriculture Institute and a distinguished professor of soil science at West Texas A&M University, Canyon, TX. He is a former director of the USDA Conservation and Production Laboratory at Bushland, TX, past president of the Soil Science Society of America, and member of the 1990–1993 Committee on Long-Range Soil and Water Policy, National Research Council, National Academy of Sciences. He is a fellow of the Soil Science Society of America, American Society of Agronomy, Soil and Water Conservation Society, a recipient of the USDA Superior Service Award, a recipient of the Hugh Hammond Bennett Award of the Soil and Water Conservation Society, and was an honorary member of the International Union of Soil Sciences in 2008. In 2009, Dr. Stewart was inducted into the USDA Agricultural Research Service Science Hall of Fame. Dr. Stewart is very supportive of education and research on dryland agriculture. The B.A. and Jane Ann Stewart Dryland Agriculture Scholarship Fund was established in West Texas A&M University in 1994 to provide scholarships for undergraduate and graduate students with a demonstrated interest in dryland agriculture.

• Precision Agriculture, the Next Revolution. Historical Evolution of Precision Farming. Estimating Spatially Variable Soil Properties for Application in Precision Farming. Soil Sampling Strategies for Precision Agriculture. A Decision Support System for Fertilizer Management. Kriging and Soil Sampling for Precision Agriculture. Nutrient Management by Site-Specific Zones in Precision Agriculture. Variable Rate Aerial Application of Input in Precision Agriculture. Application of GPS and Sensors with Information Technology for Crop Protection. Precision Irrigation. Conservation –Oriented Precision Agriculture. Root-Water Uptake Model for Sustainable Irrigation. Irrigation Management by SWAT. Spatial and Temporal Variability in Soil Hydrologic Properties. Indicators of Crop Nitrogen Status. Optical Remote Sensing of Soil Chemical Quality. Top Dressing of Nitrogen Fertilizer by Optical Sensors. Soil Fertility Assessment by Infrared Spectroscopy. Mapping Soil Properties by Measuring Electrical Conductivity. Fuzzy Clustering Techniques for Establishing Management Zones. Indicator Kriging for Soil Fertility Evaluation. Field Scale Measurement for Soil Fertility Parameters. Precision Farming in China. Research and Development Priorities.

Rattan Lal, PhD, is a distinguished university professor of soil science and director of the Carbon Management and Sequestration Center, The Ohio State University, and an adjunct professor of the University of Iceland. His current research focus is on climate-resilient agriculture, soil carbon sequestration, sustainable intensification, enhancing use efficiency of agroecosystems, and sustainable management of soil resources of the tropics. He received honorary degrees of Doctor of Science from Punjab Agricultural University (2001); the Norwegian University of Life Sciences, Aas (2005); Alecu Russo Balti State University, Moldova (2010); and the Technical University of Dresden (2015).He was president of the World Association of the Soil and Water Conservation (1987–1990); the International Soil Tillage Research Organization (1988–1991); the Soil Science Society of America (2005–2007); and is president-elect of the International Union of Soil Science. He was a member of the Federal Advisory Committee on U.S. National Assessment of Climate Change-NCADAC (2010–2013) and is a member of the SERDP Scientific Advisory Board of the US-DOE (2011–present); senior science advisor to the Global Soil Forum of the Institute for Advanced Sustainability Studies, Potsdam, Germany (2010–present); member of the Advisory Board of the Joint Program Initiative of Agriculture, Food Security and Climate Change (FACCE-JPI) of the European Union (2013–present); and chair of the Advisory Board of the Institute for Integrated Management of Material Fluxes and Resources of the United Nations University (UNU-FLORES), Dresden, Germany (2014–2017). Professor Lal was a lead author of IPCC (1998–2000). He has mentored 102 graduate students and 54 postdoctoral researchers, and hosted 140 visiting scholars.He has authored/coauthored 730 refereed journal articles and has written 12 and edited/coedited 58 books. In 2014, Reuter Thomson listed him among the world’s most influential scientific minds.B.A. Stewart, PhD, is director of the Dryland Agriculture Institute and a distinguished professor of soil science at West Texas A&M University, Canyon, TX. He is a former director of the USDA Conservation and Production Laboratory at Bushland, TX, past president of the Soil Science Society of America, and member of the 1990–1993 Committee on Long-Range Soil and Water Policy, National Research Council, National Academy of Sciences. He is a fellow of the Soil Science Society of America, American Society of Agronomy, Soil and Water Conservation Society, a recipient of the USDA Superior Service Award, a recipient of the Hugh Hammond Bennett Award of the Soil and Water Conservation Society, and was an honorary member of the International Union of Soil Sciences in 2008. In 2009, Dr. Stewart was inducted into the USDA Agricultural Research Service Science Hall of Fame. Dr. Stewart is very supportive of education and research on dryland agriculture. The B.A. and Jane Ann Stewart Dryland Agriculture Scholarship Fund was established in West Texas A&M University in 1994 to provide scholarships for undergraduate and graduate students with a demonstrated interest in dryland agriculture.

• Precision Agriculture, the Next Revolution. Historical Evolution of Precision Farming. Estimating Spatially Variable Soil Properties for Application in Precision Farming. Soil Sampling Strategies for Precision Agriculture. A Decision Support System for Fertilizer Management. Kriging and Soil Sampling for Precision Agriculture. Nutrient Management by Site-Specific Zones in Precision Agriculture. Variable Rate Aerial Application of Input in Precision Agriculture. Application of GPS and Sensors with Information Technology for Crop Protection. Precision Irrigation. Conservation –Oriented Precision Agriculture. Root-Water Uptake Model for Sustainable Irrigation. Irrigation Management by SWAT. Spatial and Temporal Variability in Soil Hydrologic Properties. Indicators of Crop Nitrogen Status. Optical Remote Sensing of Soil Chemical Quality. Top Dressing of Nitrogen Fertilizer by Optical Sensors. Soil Fertility Assessment by Infrared Spectroscopy. Mapping Soil Properties by Measuring Electrical Conductivity. Fuzzy Clustering Techniques for Establishing Management Zones. Indicator Kriging for Soil Fertility Evaluation. Field Scale Measurement for Soil Fertility Parameters. Precision Farming in China. Research and Development Priorities.