Effects of Fertigation on Plant Growth, Fruit and Photosynthesis Attributes of Strawberries under Deficit Irrigation | ||
| Journal of Agricultural Science and Technology | ||
| Article 7, Volume 27, Issue 4, 2025, Pages 817-830 PDF (8.78 M) | ||
| Document Type: Original Research | ||
| DOI: 10.22034/JAST.27.4.817 | ||
| Authors | ||
| Seyed Mohammad Alavi1; Seyyed Ebrahim Hashemi Garmdareh* 1; Yahya Selahvarzi2; Maryam Kamali2 | ||
| 1Department of Water Engineering, College of Aburaihan, University of Tehran, Tehran, Islamic Republic of Iran. | ||
| 2Department of Horticultural Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran. | ||
| Abstract | ||
| This study investigated the effects of irrigation strategies including Sustained Deficit Irrigation (SDI) and Partial Root-zone Drying (PRD) on the growth, physiology, and photosynthesis of strawberry (Fragaria×ananassa Duch.) in order to maximize crop productivity while maintaining water resources. This experiment had four irrigation strategies [FI: Control (Full Irrigation volume), PRD1 (full irrigation volume), PRD2 (50% of FI), and SDI (50% of FI) and two fertilizer treatments (EC1 and Diluted fertilizer: EC2) with four replicates. Gas exchange, leaf chlorophyll index, stomatal conductance (gs), and maximum quantum efficiency of PSII photochemistry (F'v/F'm) were assessed on three occasions throughout the experimental duration in order to monitor the impact of different irrigation strategies on photosynthesis. Yield water use efficiency, as well as TSS (Total Soluble Solids) and TA (Total Titratable Acidity), and two fruit quality-related parameters were also measured. In the final stage, PRD2-EC2 photosystem II efficiency was 9% higher than SDI-EC2 significantly. Also, the PRD strategy effectively influenced and regulated the adjustment of stomatal conductance (gs). In diluted fertilizer (EC2), the yield WUE of PRD1 and SDI was 15% (insignificant) and 30.7% (significant) lower than FI-EC2. However, the PRD2-EC2 treatment increased significantly by 72.5% compared to the control. Our observations of leaf and fruit deficiencies showed that the PRD strategy had long-term benefits for the plant and reduced water consumption. However, to establish a sustainable irrigation strategy, the nutrient solution must be adjusted to control growth and photosynthesis attributes. | ||
| Keywords | ||
| Chlorophyll fluorescence; PSII photochemistry efficiency; Stomatal conductance | ||
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