Diagnosis of nitrogen nutrition in common bean leaves by digital image analysis
DOI:
https://doi.org/10.1590/S1678-3921.pab2012.v47.12354Keywords:
Phaseolus vulgaris, AFSoft, phosphorus, color identification, chlorophyll index.Abstract
The objective of this work was to evaluate the use of digital image analysis for the N nutritional diagnosis in common bean. Four treatments combining two levels of N and P applied to the soil were evaluated. At the pod setting stage, the Falker chlorophyll index was determined, the images of trifoliates were scanned, and leaf‑N concentration was measured. In the images, a note with the software AFSoft was assigned based on the area occupied by green standards. Leaf‑N content correlated to the Falker chlorophyll index and the AFSoft note, but the correlation between chlorophyll index and AFSoft note was higher.Downloads
Published
2012-11-29
How to Cite
Haim, P. G., Zoffoli, B. C., Zonta, E., & Araújo, A. P. (2012). Diagnosis of nitrogen nutrition in common bean leaves by digital image analysis. Pesquisa Agropecuaria Brasileira, 47(10), 1546–1549. https://doi.org/10.1590/S1678-3921.pab2012.v47.12354
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Section
SCIENTIFIC NOTES