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Sugarcane response to nitrogen rates, measured by a canopy reflectance sensor PAB
Rosa,Hugo José Andrade; Amaral,Lucas Rios do; Molin,José Paulo; Cantarella,Heitor.
Abstract:The objective of this work was to evaluate whether a canopy sensor is capable of estimating sugarcane response to N, as well as to propose strategies for handling the data generated by this device during the decision-making process for crop N fertilization. Four N rate-response experiments were carried out, with N rates varying from 0 to 240 kg ha-1. Two evaluations with the canopy sensor were performed when the plants reached average stalk height of 0.3 and 0.5 m. Only two experiments showed stalk yield response to N rates. The canopy sensor was able to identify the crop response to different N rates and the relationship of the nutrient with sugarcane yield. The response index values obtained from the canopy sensor readings were useful in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: NDVI; Nitrogen fertilization; Optical sensor; Precision agriculture; Proximal sensing..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000900840
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