ISSN:
1435-0653
Keywords:
ANCOVA, analysis of covariance ANOVA, analysis of variance Chl, chlorophyll DAS, days after sowing FAPAR, fractional absorbed PAR fIPAR, fractional intercepted PAR LAI, leaf area index LAI × Chl A, canopy chlorophyll A content NDVI, normalized difference vegetation index NIR, near-infrared PAR, photosynthetic active radiation RUE, radiation use efficiency SEM, standard error of the mean SR, simple ratio VI, vegetation indices ΣSR, cumulative simple ratio
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Triticum aestivum L.) crop growing under different N supplies. Nitrogen fertilization promoted significant increases in radiation interception (plant growth) and, to a lesser extent, in radiation use efficiency (RUE). The VI vs. LAI relationships varied significantly among treatments, rendering the VI-based equations unreliable to estimate LAI under contrasting N conditions. However, a single relationship emerged when LAI × Chl A was considered. Moreover, VI were robust indicators of fIPAR by green canopy components independently of N treatment and phenology. Aboveground biomass was poorly correlated with grain yield, whereas cumulative VI simple ratio (SR) was a good predictor of grain yield, probably because cumulative SR closely tracked the duration and intensity of the canopy photosynthetic capacity.
Type of Medium:
Electronic Resource
