Evapotranspiration, crop coefficient and growth of two young pomegranate (Punica granatum L.) varieties under salt stress

Parashuram Bhantana and Naftali Lazarovitch

Agricultural Water Management, 2010, vol. 97, issue 5, 715-722

Abstract: Pomegranate (Punica granatum L.) is a drought-hardy crop, suited to arid and semi-arid regions, where the use of marginal water for agriculture is on the rise. The use of saline water in irrigation affects various biochemical processes. For a number of crops, yields have been shown to decrease linearly with evapotranspiration (ET) when grown in salt-stressed environments. In the case of pomegranate, little research has been conducted regarding the effect of salt stress. Our study focused on the responses of ET, crop coefficient (Kc) and growth in pomegranate irrigated with saline water. Experiments were conducted using lysimeters with two varieties of pomegranate, P. granatum L. vars. Wonderful and SP-2. The plants were grown with irrigation water having an electrical conductivity (ECiw) of 0.8, 1.4, 3.3, 4.8 and 8dSm-1. Plants were irrigated with 120% of average lysimeter-measured ET. Seasonal variation in ET, crop coefficient (Kc) and growth were recorded. Variation in daily ET was observed 1 month after initiation of the treatments. While significant seasonal ET variation was observed for the EC-0.8 treatment, it remained more stable for the EC-8 treatment. Salinity treatment had a significant effect on both daily ET (F=131, p

Keywords: Pomegranate; Salt; stress; Evapotranspiration; Lysimeter; Irrigation; scheduling; Crop; coefficient (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (10)

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