Data/hora: 12/06/2024 13:32:27

Provedor de dados: | 86
País: | Brazil
Título: | Sugarcane response to nitrogen rates, measured by a canopy reflectance sensor
Autores: | Rosa,Hugo José Andrade; Amaral,Lucas Rios do; Molin,José Paulo; Cantarella,Heitor.
Data: | 2015-09-01
Ano: | 2015
Palavras-chave: | NDVI; Nitrogen fertilization; Optical sensor; Precision agriculture; Proximal sensing.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000900840

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2015000900013
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.50 n.9 2015
Fonte: | info:eu-repo/semantics/openAccess