Can I read Leaf versus whole-canopy remote sensing methodologies for crop monitoring under conservation agriculture: a case of study with maize in Zimbabwe on EtoBox?

Leaf versus whole-canopy remote sensing methodologies for crop monitoring under conservation agriculture: a case of study with maize in Zimbabwe by Gracia-Romero, Adrian; Kefauver, Shawn C.; Vergara-Díaz, Omar; Hamadziripi, Esnath; Zaman-Allah, Mainassara A.; Thierfelder, Christian; Prassana, Boddupalli M.; Cairns, Jill E.; Araus, José L. is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Leaf versus whole-canopy remote sensing methodologies for crop monitoring under conservation agriculture: a case of study with maize in Zimbabwe about?

## Abstract Enhancing nitrogen fertilization efficiency for improving yield is a major challenge for smallholder farming systems. Rapid and cost-effective methodologies with the capability to assess the effects of fertilization are required to facilitate smallholder farm management. This study compares maize leaf and canopy-based approaches for assessing N fertilization performance under different tillage, residue coverage and top-dressing conditions in Zimbabwe. Among the measurements made on individual leaves, chlorophyll readings were the best indicators for both N content in leaves (R < 0.700) and grain yield (GY) (R < 0.800). Canopy indices reported even higher correlation coefficients when assessing GY, especially those based on the measurements of the vegetation density as the green area indices (R < 0.850). Canopy measurements from both ground and aerial platforms performed very similar, but indices assessed from the UAV performed best in capturing the most relevant information from the whole plot and correlations with GY and leaf N content were slightly higher. Leaf-based measurements demonstrated utility in monitoring N leaf content, though canopy measurements outperforme

Who reads Leaf versus whole-canopy remote sensing methodologies for crop monitoring under conservation agriculture: a case of study with maize in Zimbabwe?

Author

Gracia-Romero, Adrian; Kefauver, Shawn C.; Vergara-Díaz, Omar; Hamadziripi, Esnath; Zaman-Allah, Mainassara A.; Thierfelder, Christian; Prassana, Boddupalli M.; Cairns, Jill E.; Araus, José L.

Publisher

Springer Science and Business Media LLC; London: Nature Publishing Group; [London]: Springer Nature; Nature Publishing Group; Society for Mining, Metallurgy and Exploration Inc.; Research Square; Springer Nature; Island Press (ISSN 2045-2322)

Published

2020

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)