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Journal of Agronomy
Year: 2016  |  Volume: 15  |  Issue: 1  |  Page No.: 1 - 10

NDVI Response to Water Stress in Different Phenological Stages in Culture Bean

Guilherme Fernando Capristo Silva, Antonio Carlos Andrade Goncalves, Carlos Antonio da Silva Junior, Marcos Rafael Nanni, Cassiele Uliana Facco, Everson Cezar and Anderson Antonio da Silva    

Abstract: In order to study the response of Normalized Difference Vegetation Index (NDVI) to water stress in different phenological stages in culture bean. The plots consisted up of plastic pots planted with beans IPR Tangara, provided agricultural greenhouse. The humidity was controlled by readings of Time Domain Reflectometry (TDR) probes and beaker assistance irrigation was performed. Water stress was applied in one phenological stage during the development cycle of the culture and the V4, R6, R7, R8 and R9 with the next supply to the wilting point and the other stadiums kept near field capacity. The images were obtained by digital camera with filters in the region of visible light and near infrared, they were used to calculate the NDVI and processed by IDRISI Selva (geographic information system and image processing software). The NDVI vegetation index identified the presence and absence of water stress in all phenological stages before the bean crop development cycle, possessing strong correlation except for the R8. However, you will need more studies using digital cameras in order to identify the water condition of plants.

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