Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Italie → Using of remote sensing, ecophysiological analysis and soil measurements to investigate tomato crop response to different saline irrigation treatments under open field conditions

Istituto Agronomico Mediterraneo di Bari (IAMB) 2012

Using of remote sensing, ecophysiological analysis and soil measurements to investigate tomato crop response to different saline irrigation treatments under open field conditions

Hijazeen, Dana George

Titre : Using of remote sensing, ecophysiological analysis and soil measurements to investigate tomato crop response to different saline irrigation treatments under open field conditions

Auteur : Hijazeen, Dana George

Etablissement de soutenance : Istituto Agronomico Mediterraneo di Bari (IAMB) - Centre international de hautes études agronomiques méditerranéennes (CIHEAM)

Diplôme : Master of science : Land and water resource management : irrigated agriculture (2012)

Résumé
A field experiment was performed in Southern Italy (Valenzano, Bari) under open field conditions to assess the effect of saline irrigation treatments on tomato crop using remote sensing, eco-physiological and soil water measurements. Three irrigation water salinity levels (S0, S1 and S2) with electrical conductivity (ECw) of 0.6, 4 and 8 dS m-1, respectively, were applied with a seasonal irrigation input of 390 mm. Soil water content measurements and electrical conductivity allow distinguishing among salinity treatments and determining salt stress threshold. Accordingly, the osmotic potential measured on leaves strictly reflected these differences almost throughout the growing cycle. Because of salt stress, stomatal conductance and canopy cover were significantly reduced since the flowering stage. Marketable yield was reduced by about 50 and 25% in S2 and S1, respectively, as compared to the control. Fruit qualitative parameters were significantly ameliorated by using saline water. Excessive salts in irrigation water significantly increase canopy temperature, thus, crop water stress index (CWSI) could be applied to detect the salinity-affected plants. Some vegetation indices, such as normalised difference vegetation index (NDVI), difference vegetation Index (DVI), modified soil-adjusted vegetation index (MSAVI) and water index (WI) demonstrated their applicability to investigate the plant salinity stress.

Mots-clés : CANOPY IRRIGATION WATER SALINE WATER SOLANUM LYCOPERSICUM VEGETATION INDICES

Présentation (IAMB Library)

Page publiée le 19 juin 2014, mise à jour le 7 décembre 2017