SATELLITE VS. GROUND-BASED MONITORING OF DURUM WHEAT BIOMETRIC AND PHYSIOLOGICAL PARAMETERS

Abstract

Nowadays, the remote sensing technologies have been widely studied by manyresearch programs. An evaluation and standardization of the available sensors isbecoming a necessity after the increase of the sensors number and way of dataacquisition for agricultural purposes. The aim of this study was to compare two remotesensing techniques (satellite and ground-based) as tools describing the variations ofphysiological and biometric parameters of durum wheat grown under different waterregimes. The experimental layout was established in Policoro (Matera) located inSouthern Italy about 3 km far from the Ionian coast. The growing season was fromFebruary to June with three distinguished water management practices (rainfed,50% and 100% of irrigation requirements). The Landsat 8 images and radiometricground-based data were acquired regularly in April, May and June together withplant biometric and physiological parameters. The overall results indicated nosignificant difference of biomass and yield for different irrigation regimes. This couldbe explained by large precipitation amount (205 mm) regularly distributed duringthe season which limited the needs for irrigation (105 and 52.5 mm for 100% and50% irrigation, respectively). Soil adjusted vegetation index (SAVI) showed slightlybetter performance than normalized difference vegetation index (NDVI) when plottedagainst the leaf area index (LAI). The regression coefficient of such relationshipwas greater if based on the ground than on the satellite data. Therefore, it couldbe concluded that in site vegetation indices describe the LAI with higher fidelitythan those from the satellite system. Nevertheless, the satellite data could providereasonable indications about the crop growth when other means of measurementare missing.


Autore Pugliese

Tutti gli autori

  • N. Mzid; R. Albrizio; V. Cantore; M. Todorovic

Titolo volume/Rivista

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Anno di pubblicazione

2015

ISSN

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ISBN

2-85352-549-X


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Settori ERC

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