Site-specific fertilizer nitrogen management in irrigated transplanted rice (Oryza sativa) using an optical sensor

  title={Site-specific fertilizer nitrogen management in irrigated transplanted rice (Oryza sativa) using an optical sensor},
  author={Bijay-Singh and Varinderpal-Singh and Jaspreet Purba and Rajesh Kumar Sharma and Mangi Lal Jat and Yadvinder-Singh and H. S. Thind and Raj Kishor Gupta and Osama Chaudhary and Parvesh Chandna and Harmandeep S. Khurana and Ajay Kumar and Jagmohan-Singh and Harminder S. Uppal and Rajneet K. Uppal and Monika Vashistha},
  journal={Precision Agriculture},
Blanket fertilizer nitrogen (N) recommendations for large irrigated transplanted rice tracts lead to low N use-efficiency (NUE) due to field-to-field variability in soil N supply and seasonal variability in yield. To achieve high NUE, a fertilizer N management strategy based on visible and near-infrared spectral response from plant canopies using a GreenSeeker™ optical sensor was evaluated. Seven field experiments were conducted during 2005–2007 at two locations in the Indo-Gangetic plains of… CONTINUE READING
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