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Investigating the role of organic fertilizers in increasing spinach plant variety Virofly resistance to drought stress in greenhouse conditions
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Edris Gavili   , Mohammad Babaakbari , Akbar Hassani , Milad Pero , Setareh Amanifar |
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Abstract: (6 Views) |
Drought stress is one of the most important abiotic stresses that limits plant growth and yield, especially in arid and semi-arid regions, by disrupting water and nutrient uptake and physiological processes. In order to investigate the role of organic fertilizers in improving spinach yield under drought stress conditions, a factorial experiment was conducted in a completely randomized design (CRD) with three replications in greenhouse conditions. The treatments included 13 individual levels and mixtures of liquid fertilizers Zargreen, molasses and vinasse with ratios of 100-0-0(Z1), 75-25-0(Z2), 75-0-25(Z3), 50-25-25(Z4), 0-100-0(M5), 25-75-0(M6), 0-75-25(M7), 25-50-25(M8), 0-0-100(V9), 25-0-75(V10), 0-25-75(V11), 25-25-50(V12) and 0-0-0(C13) in three-kilogram pots at a rate of 0.14 ml and two moisture levels of 100% field capacity and 75% field capacity. The results of the experiment showed that drought stress caused a decrease in the fresh and dry weight of shoots and roots, height, chlorophyll a and chlorophyll b, and an increase in the amount of soluble carbohydrates, while the use of organic fertilizers improved the conditions compared to the control. The best treatment (Z1) caused a 34% increase in height, 53% in fresh weight, 30% in chlorophyll a and 35% in chlorophyll b, and a 35% decrease in soluble carbohydrates and 5% in water consumption. In general, the use of organic fertilizers was able to reduce some of the negative effects of drought stress and improve spinach yield.
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| Keywords: Amino acids, chlorophyll, molasses, vinasse, zargreen. |
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Type of Study: Research |
Subject:
Plant nutrition
Received: 2025/05/15 | Accepted: 2025/09/22 | Published: 2026/02/23
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