Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Ground cover and leaf area index relationship in a grass, legume and crucifer crop
Year:2012
Research Areas
  • Crop production
Information
Abstract
Canopy characterization is essential for describing the interaction of a crop with its environment. The goal of this work was to determine the relationship between leaf area index (LAI) and ground cover (GC) in a grass, a legume and a crucifer crop, and to assess the feasibility of using these relationships as well as LAI-2000 readings to estimate LAI. Twelve plots were sown with either barley (Hordeum vulgare L.), vetch (Vicia sativa L.), or rape (Brassica napus L.). On 10 sampling dates the LAI (both direct and LAI-2000 estimations), fraction intercepted of photosynthetically active radiation (FIPAR) and GC were measured. Linear and quadratic models fitted to the relationship between the GC and LAI for all of the crops, but they reached a plateau in the grass when the LAI > 4. Before reaching full cover, the slope of the linear relationship between both variables was within the range of 0.025 to 0.030. The LAI-2000 readings were linearly correlated with the LAI but they tended to overestimation. Corrections based on the clumping effect reduced the root mean square error of the estimated LAI from the LAI-2000 readings from 1.2 to less than 0.50 for the crucifer and the legume, but were not effective for barley.
International
Si
JCR
Si
Title
Plant, Soil And Environment
ISBN
1214-1178
Impact factor JCR
1,078
Impact info
Volume
58
Journal number
From page
385
To page
390
Month
SIN MES
Ranking
Participants
  • Autor: Javier Ramirez Garcia (UPM)
  • Autor: Miguel Quemada Saenz-Badillos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Sistemas Agrarios (AgSystems)
  • Centro o Instituto I+D+i: Centro de Estudios e Investigación para la Gestión de Riesgos Agrarios Medioambientales (CEIGRAM)
  • Departamento: Producción Vegetal: Fitotecnia
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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