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Rice sensitivity to saline irrigation in Southern Spain

Author

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  • Aguilar, Manuel
  • Fernández-Ramírez, José Luis
  • Aguilar-Blanes, María
  • Ortiz-Romero, Clemente

Abstract

Losses of productivity of flooded rice in Southern Spain may occur due to the use of saline water coming from the existent tidal regime in the marshes of Guadalquivir River, and the sensibility of the plants is variable according to its stage of development. The aim of this research was to evaluate the production of rice grains and its components, spikelet sterility and the phenological development of rice at different levels of salinity and in different periods of its cycle. In the conditions of the trial, the productive potential of rice based on the electrical conductivity (EC) of the irrigation water can be estimated by using the equation “Percentage of grain yield=100−12.0 (EC – 0.92)”. It was estimated that from 1.6–1.7dSm−1 salt content affects rice grain yield. Salinity also had a negative impact on a number of yield components including panicles per surface unit, tillers and spikelets per plant; floret sterility; and even delayed heading. Individual grain size was scarcely affected by salinity increase. The vegetative and reproductive phases were significantly more sensitive to salinity than grain filling and maturation phase. Irrigation management practices should be adopted to minimize salinity during these critical growth stages.

Suggested Citation

  • Aguilar, Manuel & Fernández-Ramírez, José Luis & Aguilar-Blanes, María & Ortiz-Romero, Clemente, 2017. "Rice sensitivity to saline irrigation in Southern Spain," Agricultural Water Management, Elsevier, vol. 188(C), pages 21-28.
    • Handle: RePEc:eee:agiwat:v:188:y:2017:i:c:p:21-28
    DOI: 10.1016/j.agwat.2017.03.027
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    References listed on IDEAS

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    1. Zeng, Linghe & Shannon, Michael C. & Lesch, Scott M., 2001. "Timing of salinity stress affects rice growth and yield components," Agricultural Water Management, Elsevier, vol. 48(3), pages 191-206, June.
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    Cited by:

    1. Yang, Hui & Du, Taisheng & Mao, Xiaomin & Ding, Risheng & Shukla, Manoj K., 2019. "A comprehensive method of evaluating the impact of drought and salt stress on tomato growth and fruit quality based on EPIC growth model," Agricultural Water Management, Elsevier, vol. 213(C), pages 116-127.
    2. Zhangzhong, Lili & Yang, Peiling & Zhen, Wengang & Zhang, Xin & Wang, Caiyuan, 2019. "A kinetic model for the chemical clogging of drip irrigation system using saline water," Agricultural Water Management, Elsevier, vol. 223(C), pages 1-1.

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