Crop Water Production Function of Processing Tomato (Solanum lycopersicum) under Regulated Deficit Irrigation

Abstract:

An experiment was conducted to determine the water sensitivity index (WSI) and water production function (WPF) of processing tomato under regulated deficit irrigation (RDI) in an arid environment. The WSI at different growth periods of processing tomato was maintained and a periodical WPF was established based on Jensen model. The maximum WSI was maintained at flowering with 0.8122 while the minimum was marked at seedling with 0.0589. In addition, WSI at full fruiting was much lower than at flowering but higher than at late fruiting. Therefore, processing tomato was extremely sensitive to water deficit at flowering and enough water should be applied to crops to maintain a high yield, while processing tomato was not sensitive to water deficit at seedling and a high level of water deficit could be reasonably controlled at this period through RDI without causing yield reduction.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 3026-3030
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.3026
• Online since: January 2014
• Authors: Heng Jia Zhang, Ai Cun Wen, Ji Dong Zhang
• Keywords: Jensen Model, Processing Tomato, Regulated Deficit Irrigation, Water Production Function, Water Sensitivity Index

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DOI: 10.4028/www.scientific.net/amr.838-841.2366

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DOI: 10.4028/www.scientific.net/amr.864-867.2009