Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/243023
Type: Artigo de periódico
Title: Sugarcane Response To Nitrogen Rates, Measured By A Canopy Reflectance Sensor
Author: Andrade Rosa
Hugo Jose; do Amaral
Lucas Rios; Molin
Jose 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 assessing sugarcane response to the applied N rate. Canopy reflectance sensors can help to identify areas responsive to N fertilization and, therefore, improve sugarcane fertilizer management.
Subject: Optical Sensor
Corn
Index
Yield
Recommendations
Fertilization
Algorithm
System
Wheat
Urea
Country: BRASILIA DF
Editor: EMPRESA BRASIL PESQ AGROPEC
Rights: fechado
Identifier DOI: 10.1590/S0100-204X2015000900013
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000900840&lng=en&nrm=iso&tlng=en
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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