Remote sensing based monitoring of durum wheat under water stress treatments

Abstract

Nowadays, the remotely provided information is urgently needed for variousdecision makers and remote sensing is widely used for different purposes. An evaluation andstandardization of the remote sensing techniques is becoming a necessity after the increase ofthe sensors number and way of data acquisition. The use of remotely sensed information is ofcrucial importance for agricultural sector as the monitoring of agricultural activities facesspecial problems related to the spatial and temporal variability, physical landscape, as wellas climatic driving variables and agricultural management practices. Requests for objectiveinformation will increase in the future, because of the expected modernization of agriculturalsector and needs for a more efficient use of resources. This research aims to provide acomparison of two remote sensing techniques (satellite and ground-based) as tools describingthe variations of crop stress related indices under different water regimes (case of durumwheat). The experimental layout was established in Policoro (Matera) located in SouthernItaly about 3 km far from the Ionian coast. The growing season was from February to June2015 with three distinguished water management practices (rain-fed, 50% and 100% ofirrigation requirements). The Landsat 8 images and ground-based sensing data wereacquired regularly in April, May and June together with plant physiological parameters.The overall results indicated no significant differences in terms of both biomass and yieldamong the irrigation regimes because of the abundant precipitation (355 mm) which limitedthe irrigation supply. Moderate correlations appear to be evident for satellite and groundbasedderived LAI, NDVI and SAVI regressions, with R² values close or higher than 0.5. Thebest performance was obtained for the WDI with (R²=0.81). Nevertheless, the satellite datacould provide reasonable indications about the crop status if applied with higher resolution.


Autore Pugliese

Tutti gli autori

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

Titolo volume/Rivista

Non Disponibile


Anno di pubblicazione

2017

ISSN

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ISBN

979-10-92272-22-2


Numero di citazioni Wos

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