Volume 11, Issue 2 (8-2020)                   2020, 11(2): 61-75 | Back to browse issues page

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Dept. of Agric. and Plant Breeding, Ferdowsi Univ. of Mashhad, Mashhad, Iran
Abstract:   (1143 Views)
In order to evaluate the effect of various irrigation regimes and different fertilizer combinations on some morphological and physiological traits of Mentha piperita, a greenhouse experiment was carried out at the research greenhouse of Ferdowsi University of  Mashhad, during growing season 2017-2018. The experiment was conducted in factorial experiment based on completely randomized design with three replicates. Factors were consisted of different irrigation regimes levels: 100% FC, 75% FC and 50% FC, and different biological and chemical fertilizers combinations including:1-biochemical bacterial NPK + NPP, 2- NPP bio-fertilizer, 3-NPK, 4-micronutrient fertilizer (MIC), 5-MIC + amino acid fertilizer (AP). The results showed that interaction of irrigation regimes and different biofertilizers on leaf area, height, branch number and stomatal conductance and RWC had different significant at 1% and 5% level respectively. The highest leaf area (1353 centimeters square), Maximum height (42 cm) and the highest number of branches (37) were obtained in irrigation of 100% FC and NPK + NPP combination fertilizer treatments and the highest stomatal conductance (99 mmoles per second) and the highest RWC (82.6%) were obtained in 100% FC irrigation and NPP fertilizer treatments. Also, the results of variance analysis showed that the main effects of irrigation regimes and fertilizer types on dry weight, electrolyte leakage, spade number and essential oil percentage were significant at 1% level, but their interactions were not significant. The highest dry weight (17.7 g) and spade (49.8) were observed in FC 100% irrigation and NPK + NPP combination treatment, the highest electrolyte leakage (70.2%) and percentage of essential oil (2.9%) were observed in irrigation of 50% FC and NPK + NPP combination fertilizer treatments. The results of this study showed that the use of bacterial and chemical fertilizers in the complete irrigation regime increased morphological and physiological traits. Also, the results showed that the use of biofertilizers less increased the amount of electrolyte leakage under drought stress compared to other fertilizer treatments.
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Type of Study: Research |
Received: 2019/04/20 | Accepted: 2020/08/31 | Published: 2020/08/31

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