Biosystems Engineering · 2006 · 90 citations · 20 references
AgricultureEarth SciencesSoil SciencesSoil ChemistrySoil FertilitySoil ScienceInfrared SpectroscopyPhosphorus CyclePhosphorus ManagementSoil Nitrogen SensingSoil Organic Matter SensingSoil Phosphorus SensingNear-infrared Phosphorus EstimationNear-infrared Spectroscopy SensorsOptical Phosphorus SensorsOptical Soil Nitrogen SensorsPhosphate Ion DetectionSpectroscopic Phosphorus DetectionVisible-near-infrared Spectroscopy
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REFLECTION OF RADIANT ENERGY FROM SOILS
S. A. Bowers, R. J. Hanks · Soil Science · 1965 · 652 citations