Volume 13, Issue 3 (12-2022)                   2022, 13(3): 33-46 | Back to browse issues page

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Date Palm and Tropical Fruits Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran.
Abstract:   (471 Views)
 This research was conducted to investigate the effect of potassium sulfate application on some physiological characteristics of tissue culture-derived date palm plants under water stress conditions. The study was conducted as factorial experiment based on a randomized complete block design with three replications. After complete establishment of plants, potassium sulfate at five levels (zero, foliar application of 2 and 4 g L-1, soil application of 50 and 100 g for each plant) and then water stress at three levels (100, 80 and 60% of cumulative evaporation from Class A evaporation pan) were applied. The results showed that with the application of potassium sulfate at high levels of water stress, the chlorophyll index increased and ion leakage percentage decreased. In the third level of water stress without application of potassium, the chlorophyll index was recorded at 42.61, but with the soil application of 100 g potassium sulfate, the chlorophyll index significantly increased to 58.78. The ion leakage of 34.75% was also observed at the third level of water stress without the application of potassium sulfate, while with the application of 100 g potassium sulfate, it reduced significantly to 25.42%. The potassium concentration in leaves in the treatment without potassium application was 1.61%, while in the treatment with soil application of 100 g of potassium sulfate, the value of 1.88% was recorded with a significant increase. Overall, soil application of 100 g of water-soluble potassium sulfate for each plant had the best results in terms of the physiological responses of date palm plant in dealing with water stress conditions.
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Type of Study: Research | Subject: Availability of soil water and nutrients for plant
Received: 2022/07/16 | Accepted: 2022/12/1 | Published: 2022/12/1

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