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Istituto Agronomico Mediterraneo di Bari (IAMB) 2010

Impacts of kaolin-based particle film technology on potato crop under different water regimes

Yamac, Sevim Seda

Titre : Impacts of kaolin-based particle film technology on potato crop under different water regimes

Auteur : Yamac, Sevim Seda

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 (2010)

Résumé
A field experiment has been carried out in Valenzano (Bari) to study the response of potato crop to different water regimes (100%, 50%, rainfed) and kaolin applications. Growth and yield parameters of potato were significantly affected by water supply. Marketable yield reached 35 t/ha under full irrigation. It was reduced by 23% and 51% in the case of 50% irrigation and rainfed treatments, respectively. Marketable normalized water productivity values were 11% and 3% higher in fully irrigated and 50% irrigated treatments, as compared to rainfed. No significant difference has been observed among kaolin treatments for growth, yield and efficiencies in the use of resources (water and radiation). Leaf gas exchange was significantly reduced by water deficit and, to a lower extent, by kaolin application in two irrigated treatments. Accordingly, at canopy scale, assimilation and evapotranspiration were reduced by kaolin treatments up to 15 and 5%, respectively. This behavior is explained by the increase in plant temperature at both leaf and canopy scales : it increased by 1-2°C after kaolin application in irrigated treatments. The opposite behavior was observed for rainfed treatments.

Mots-clés : KAOLIN MEDITERRANEAN CLIMATE SOLANUM TUBEROSUM WATER AVAILABILITY WATER AVAILABILITY

Présentation (IAMB Library)

Page publiée le 16 juin 2014, mise à jour le 12 septembre 2018