@inproceedings{da0eb07cd67546529697cf2263e949f7,
title = "Detecting abiotic stress in soybean with a proximal canopy sensor",
abstract = "On farms under a corn-soybean rotation, the value of any proximal canopy sensor increases significantly if that sensor can be used on both crop species. These sensors have been most often used to diagnose nitrogen stress in cereal and forage grasses. The relationship of soybean yield losses due to reduced plant population or nutrition stress due to phosphorus (P) or potassium (K) deficiencies with sensor normalized difference vegetation index (NDVI) values at growth stage R1 was studied. The NDVI data from a GreenSeekerTM unit were obtained for five seeding rates and two nutrition studies, and related to the observed yield losses. Those yield losses were generally well related to decreased NDVI values due either to low plant numbers in the seeding rate studies or reduced plant biomass in the nutrition studies. The results indicated that proximal active sensor technology will be useful in soybean production systems.",
keywords = "K nutrition, NDVI, P nutrition, Reflectance sensor, Seeding rate, Soybean",
author = "Grove, {J. H.} and Navarro, {M. M.} and Pena-Yewtukhiw, {E. M.}",
year = "2011",
language = "English",
series = "Precision Agriculture 2011 - Papers Presented at the 8th European Conference on Precision Agriculture 2011, ECPA 2011",
pages = "523--532",
editor = "Stafford, {John V.}",
booktitle = "Precision Agriculture 2011 - Papers Presented at the 8th European Conference on Precision Agriculture 2011, ECPA 2011",
note = "8th European Conference on Precision Agriculture 2011, ECPA 2011 ; Conference date: 11-07-2011 Through 14-07-2011",
}