Relationship between vegetation indices and agronomic performance of maize varieties under different nitrogen rates

Authors

  • Marcela da Silva Flores Universidade Federal de Mato Grosso do Sul
  • Willian Meniti Paschoalete Universidade Federal de Mato Grosso do Sul
  • Fabio Henrique Rojo Baio Universidade Federal de Mato Grosso do Sul
  • Cid Naudi Silva Campos Universidade Federal de Mato Grosso do Sul
  • Ariane de Andréa Pantaleão Universidade Federal de Mato Grosso do Sul
  • Larissa Pereira Ribeiro Teodoro Universidade Federal de Mato Grosso do Sul
  • Carlos Antônio da Silva Júnior Universidade do Estado do Mato Grosso
  • Paulo Eduardo Teodoro Universidade Federal de Mato Grosso do Sul

DOI:

https://doi.org/10.14393/BJ-v36n5a2020-47993

Keywords:

NDRE., NDVI., SAVI., Remote sensing., Zea mays.

Abstract

Precision agriculture is a set of techniques that assist the monitoring of the agronomic performance of the maize crop by using vegetation indices. This study aimed to verify the relationship between vegetation indices, plant height, leaf N content, and grain yield of three maize varieties, grown under high and low N as topdressing. The experiment was carried out at the Fundação de Apoio à Pesquisa Agropecuária de Chapadão (Fundação Chapadão), located in the municipality of Chapadão do Sul, during the 2017/2018 season. The experiment consisted of a randomized block design with four replications, arranged in a 3x2 split-plot scheme. The first factor (plots) corresponded to three open-pollinated maize varieties (BRS 4103, BRS Gorotuba, and SCS 154), and the second factor (subplots) consisted of two N rates applied as topdressing (80 and 160 kg- 1). All the evaluated variables showed varieties x N interaction. Vegetation indices in maize varieties were influenced by the N rate applied as topdressing. Normalized Difference Vegetation Index (NDVI) and Soil-adjusted Vegetation Index (SAVI) showed a higher correlation with plant height. At the same time, Normalized Difference Red Edge (NDRE) had a stronger association with leaf N content.

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Published

2020-08-13

How to Cite

FLORES, M. da S., PASCHOALETE, W.M., BAIO, F.H.R., CAMPOS, C.N..S., PANTALEÃO, A. de A., RIBEIRO TEODORO, L.P.., SILVA JÚNIOR, C.A. da . and TEODORO, P.E., 2020. Relationship between vegetation indices and agronomic performance of maize varieties under different nitrogen rates . Bioscience Journal [online], vol. 36, no. 5, pp. 1638–1644. [Accessed20 May 2022]. DOI 10.14393/BJ-v36n5a2020-47993. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/47993.

Issue

Section

Agricultural Sciences