Abstract:
Timely nondestructive estimation of crop nitrogen (N) status is crucial for in-season site-specific N management. Active crop canopy sensors are the promising tools to ob...Show MoreMetadata
Abstract:
Timely nondestructive estimation of crop nitrogen (N) status is crucial for in-season site-specific N management. Active crop canopy sensors are the promising tools to obtain the needed information without being affected by environmental light conditions. The objective of this study was to evaluate the potential for the GreenSeeker active crop canopy sensor to estimate rice (Oryza sativa L.) N status. Nine N rate experiments were conducted from 2008 to 2012 in Jiansanjiang, Heilongjiang Province in Northeast China. The results indicated that across site-years and growth stages, normalized difference vegetation index (NDVI) and ratio vegetation index (RVI) obtained with the GreenSeeker sensor could explain 73%-76% and 70%-73% of rice aboveground biomass and plant N uptake variability in this study, respectively. The NDVI index became saturated when biomass reached about 4 t ha-1 or when plant N uptake reached about 100 kg ha-1, whereas RVI did not show obvious saturation effect. The validation results, however, indicated that both indices performed similarly, and their relative errors (RE) were still large (> 40%). Although the two indices only explained less than 40% of plant N concentration or N nutrition index (NNI) variability, the RE values were acceptable (<; 26%). The results indicated some potentials of using the GreenSeeker sensor to estimate rice N status nondestructively, but more studies are needed to further evaluate and improve its performance for practical applications.
Published in: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( Volume: 7, Issue: 11, November 2014)
Funding Agency:
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Yinkun Yao received the M.S. degree in soil science from Xinjiang Agricultural University, Xinjiang, China, and the Ph.D. degree in plant nutrition from China Agricultural University, Beijing, China, in 2008 and 2012, respectively.
Currently, he is a Postdoctoral Researcher with China Agricultural University. His research interests include precision agriculture and plant nutrition.
Yinkun Yao received the M.S. degree in soil science from Xinjiang Agricultural University, Xinjiang, China, and the Ph.D. degree in plant nutrition from China Agricultural University, Beijing, China, in 2008 and 2012, respectively.
Currently, he is a Postdoctoral Researcher with China Agricultural University. His research interests include precision agriculture and plant nutrition.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Yuxin Miao received the Ph.D. degree in soil science/precision agriculture from the University of Minnesota-Twin Cities, Minneapolis, MN, USA, in 2005.
From 2005 to 2006, he was Postdoctoral Researcher with the Precision Agriculture Center, University of Minnesota-Twin Cities. He joined as an Associate Professor of Precision Agriculture with China Agricultural University, Beijing, China, in 2007. His research interest incl...Show More
Yuxin Miao received the Ph.D. degree in soil science/precision agriculture from the University of Minnesota-Twin Cities, Minneapolis, MN, USA, in 2005.
From 2005 to 2006, he was Postdoctoral Researcher with the Precision Agriculture Center, University of Minnesota-Twin Cities. He joined as an Associate Professor of Precision Agriculture with China Agricultural University, Beijing, China, in 2007. His research interest incl...View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Qiang Cao received the M.S. degree in soil science from South China Agricultural University, Guangdong, China, in 2010, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China.
His research interest includes precision agriculture and plant nutrition, especially crop sensor-based precision nitrogen management.
Qiang Cao received the M.S. degree in soil science from South China Agricultural University, Guangdong, China, in 2010, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China.
His research interest includes precision agriculture and plant nutrition, especially crop sensor-based precision nitrogen management.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Hongye Wang received the M.S. degree in agronomy from Tarim University, Xinjiang, China, in 2009, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China, from 2010.
His research interest includes high-yield high-efficiency rice management.
Hongye Wang received the M.S. degree in agronomy from Tarim University, Xinjiang, China, in 2009, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China, from 2010.
His research interest includes high-yield high-efficiency rice management.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), Institute of Geography, University of Cologne, Köln, Germany
Martin L. Gnyp received the M.S. and Ph.D. degrees in geography from the University of Cologne, Köln, Germany, in 2008, and 2014, respectively.
He will start his new job at Yara, Germany as a research scientist in the summer of 2014. His research interest includes remote sensing methods for estimating crop biomass.
Martin L. Gnyp received the M.S. and Ph.D. degrees in geography from the University of Cologne, Köln, Germany, in 2008, and 2014, respectively.
He will start his new job at Yara, Germany as a research scientist in the summer of 2014. His research interest includes remote sensing methods for estimating crop biomass.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), Institute of Geography, University of Cologne, Köln, Germany
Georg Bareth received the Ph.D. degree from the University of Hohenheim, Stuttgart, Germany, in 1999.
He joined as a Professor of Geoinformatics with the University of Cologne, Köln, Germany, in 2004. His research interests include application of geographic information systems (GIS) and remote sensing (RS) in agriculture and resource management.
Georg Bareth received the Ph.D. degree from the University of Hohenheim, Stuttgart, Germany, in 1999.
He joined as a Professor of Geoinformatics with the University of Cologne, Köln, Germany, in 2004. His research interests include application of geographic information systems (GIS) and remote sensing (RS) in agriculture and resource management.View more
Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, USA
Rajiv Khosla received the Ph.D. degree in soil fertility and crop management from Virginia Tech, Blacksburg, VA, USA, in 1998.
He is a Professor and Extension Specialist of Precision Agriculture with Colorado State University (CSU), Fort Collins, CO, USA. He was Founding President of International Society of Precision Agriculture. His research interests include management of in-field soil and crop spatial variability using...Show More
Rajiv Khosla received the Ph.D. degree in soil fertility and crop management from Virginia Tech, Blacksburg, VA, USA, in 1998.
He is a Professor and Extension Specialist of Precision Agriculture with Colorado State University (CSU), Fort Collins, CO, USA. He was Founding President of International Society of Precision Agriculture. His research interests include management of in-field soil and crop spatial variability using...View more
Jiansanjiang Institute of Agricultural Sciences, Fujin, Heilongjiang, China
Wen Yang received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1999.
She is the Associate Director with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China and a Senior Agronomist focusing on rice management.
Wen Yang received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1999.
She is the Associate Director with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China and a Senior Agronomist focusing on rice management.View more
Jiansanjiang Institute of Agricultural Sciences, Fujin, Heilongjiang, China
Fengyan Liu received the M.S. degree in agronomy from Northeast Agricultural University, Heilongjiang, China, in 2010.
She is a Research Scientist with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China. Her research interests include rice breeding and management.
Fengyan Liu received the M.S. degree in agronomy from Northeast Agricultural University, Heilongjiang, China, in 2010.
She is a Research Scientist with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China. Her research interests include rice breeding and management.View more
Qixing Modern Agriculture Development Center, Qixing Farm, Fujin, Heilongjiang, China
Cheng Liu received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1985.
He is a Director with Qixing Modern Agriculture Development Center, Qixing Farm, Jiansanjiang, Heilongjiang, China. He is an Agronomist. His research interest includes new technologies for high-yield and high-efficiency rice management.
Cheng Liu received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1985.
He is a Director with Qixing Modern Agriculture Development Center, Qixing Farm, Jiansanjiang, Heilongjiang, China. He is an Agronomist. His research interest includes new technologies for high-yield and high-efficiency rice management.View more
Contents International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Yinkun Yao received the M.S. degree in soil science from Xinjiang Agricultural University, Xinjiang, China, and the Ph.D. degree in plant nutrition from China Agricultural University, Beijing, China, in 2008 and 2012, respectively.
Currently, he is a Postdoctoral Researcher with China Agricultural University. His research interests include precision agriculture and plant nutrition.
Yinkun Yao received the M.S. degree in soil science from Xinjiang Agricultural University, Xinjiang, China, and the Ph.D. degree in plant nutrition from China Agricultural University, Beijing, China, in 2008 and 2012, respectively.
Currently, he is a Postdoctoral Researcher with China Agricultural University. His research interests include precision agriculture and plant nutrition.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Yuxin Miao received the Ph.D. degree in soil science/precision agriculture from the University of Minnesota-Twin Cities, Minneapolis, MN, USA, in 2005.
From 2005 to 2006, he was Postdoctoral Researcher with the Precision Agriculture Center, University of Minnesota-Twin Cities. He joined as an Associate Professor of Precision Agriculture with China Agricultural University, Beijing, China, in 2007. His research interest includes precision crop management, especially remote sensing-based precision nitrogen management and high yield high efficiency precision crop management systems.
Dr. Miao was a recipient of the Pierre C. Robert Precision Agriculture Young Scientist Award in 2012.
Yuxin Miao received the Ph.D. degree in soil science/precision agriculture from the University of Minnesota-Twin Cities, Minneapolis, MN, USA, in 2005.
From 2005 to 2006, he was Postdoctoral Researcher with the Precision Agriculture Center, University of Minnesota-Twin Cities. He joined as an Associate Professor of Precision Agriculture with China Agricultural University, Beijing, China, in 2007. His research interest includes precision crop management, especially remote sensing-based precision nitrogen management and high yield high efficiency precision crop management systems.
Dr. Miao was a recipient of the Pierre C. Robert Precision Agriculture Young Scientist Award in 2012.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Qiang Cao received the M.S. degree in soil science from South China Agricultural University, Guangdong, China, in 2010, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China.
His research interest includes precision agriculture and plant nutrition, especially crop sensor-based precision nitrogen management.
Qiang Cao received the M.S. degree in soil science from South China Agricultural University, Guangdong, China, in 2010, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China.
His research interest includes precision agriculture and plant nutrition, especially crop sensor-based precision nitrogen management.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
Hongye Wang received the M.S. degree in agronomy from Tarim University, Xinjiang, China, in 2009, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China, from 2010.
His research interest includes high-yield high-efficiency rice management.
Hongye Wang received the M.S. degree in agronomy from Tarim University, Xinjiang, China, in 2009, and is currently pursuing the Ph.D. degree in plant nutrition at China Agricultural University, Beijing, China, from 2010.
His research interest includes high-yield high-efficiency rice management.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), Institute of Geography, University of Cologne, Köln, Germany
Martin L. Gnyp received the M.S. and Ph.D. degrees in geography from the University of Cologne, Köln, Germany, in 2008, and 2014, respectively.
He will start his new job at Yara, Germany as a research scientist in the summer of 2014. His research interest includes remote sensing methods for estimating crop biomass.
Martin L. Gnyp received the M.S. and Ph.D. degrees in geography from the University of Cologne, Köln, Germany, in 2008, and 2014, respectively.
He will start his new job at Yara, Germany as a research scientist in the summer of 2014. His research interest includes remote sensing methods for estimating crop biomass.View more
International Center for Agro-Informatics and Sustainable Development (ICASD), Institute of Geography, University of Cologne, Köln, Germany
Georg Bareth received the Ph.D. degree from the University of Hohenheim, Stuttgart, Germany, in 1999.
He joined as a Professor of Geoinformatics with the University of Cologne, Köln, Germany, in 2004. His research interests include application of geographic information systems (GIS) and remote sensing (RS) in agriculture and resource management.
Georg Bareth received the Ph.D. degree from the University of Hohenheim, Stuttgart, Germany, in 1999.
He joined as a Professor of Geoinformatics with the University of Cologne, Köln, Germany, in 2004. His research interests include application of geographic information systems (GIS) and remote sensing (RS) in agriculture and resource management.View more
Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, USA
Rajiv Khosla received the Ph.D. degree in soil fertility and crop management from Virginia Tech, Blacksburg, VA, USA, in 1998.
He is a Professor and Extension Specialist of Precision Agriculture with Colorado State University (CSU), Fort Collins, CO, USA. He was Founding President of International Society of Precision Agriculture. His research interests include management of in-field soil and crop spatial variability using innovative information technologies for variable rate precision nutrient management.
Rajiv Khosla received the Ph.D. degree in soil fertility and crop management from Virginia Tech, Blacksburg, VA, USA, in 1998.
He is a Professor and Extension Specialist of Precision Agriculture with Colorado State University (CSU), Fort Collins, CO, USA. He was Founding President of International Society of Precision Agriculture. His research interests include management of in-field soil and crop spatial variability using innovative information technologies for variable rate precision nutrient management.View more
Jiansanjiang Institute of Agricultural Sciences, Fujin, Heilongjiang, China
Wen Yang received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1999.
She is the Associate Director with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China and a Senior Agronomist focusing on rice management.
Wen Yang received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1999.
She is the Associate Director with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China and a Senior Agronomist focusing on rice management.View more
Jiansanjiang Institute of Agricultural Sciences, Fujin, Heilongjiang, China
Fengyan Liu received the M.S. degree in agronomy from Northeast Agricultural University, Heilongjiang, China, in 2010.
She is a Research Scientist with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China. Her research interests include rice breeding and management.
Fengyan Liu received the M.S. degree in agronomy from Northeast Agricultural University, Heilongjiang, China, in 2010.
She is a Research Scientist with Jiansanjiang Institute of Agricultural Sciences, Heilongjiang, China. Her research interests include rice breeding and management.View more
Qixing Modern Agriculture Development Center, Qixing Farm, Fujin, Heilongjiang, China
Cheng Liu received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1985.
He is a Director with Qixing Modern Agriculture Development Center, Qixing Farm, Jiansanjiang, Heilongjiang, China. He is an Agronomist. His research interest includes new technologies for high-yield and high-efficiency rice management.
Cheng Liu received the B.S. degree in agronomy from Heilongjiang Bayi Agricultural University, Mishan, China, in 1985.
He is a Director with Qixing Modern Agriculture Development Center, Qixing Farm, Jiansanjiang, Heilongjiang, China. He is an Agronomist. His research interest includes new technologies for high-yield and high-efficiency rice management.View more
