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Saber Jamali; Hossein Ansari; Abbas Safarizadeh Sani
Abstract
To investigate the interaction of magnetic water and deficit irrigation on yield and yield components of marigold, a factorial experiment was conducted in a completely randomized design in the research greenhouse of the Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, in 2019, using pot ...
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To investigate the interaction of magnetic water and deficit irrigation on yield and yield components of marigold, a factorial experiment was conducted in a completely randomized design in the research greenhouse of the Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, in 2019, using pot culture with 3 replications. Treatments included 4 irrigation levels (100%, 85%, 70%, and 55% of field capacity) and 2 types of water (normal water and magnetic water). The results showed that different levels of irrigation on all traits (except physical water productivity which was significant at a 5% level) were significant (P <0.01). Effects of magnetic water on the dry weight of lateral branches and flowers, number of flowers and physical water productivity were significant (at P <0.01); and on the dry weight of flowering stems and leaves, number of leaves and lateral branches were also significant (at P <0.05). The interaction effect of the studied treatments was significant (P <0.01) on the number of leaves; and on the dry weight of roots, flowers, and flowering stems (P <0.05). The highest dry weights of leaves and flowering stems, number of flowers, number of leaves and lateral branches, height and physical water productivity were in irrigation with 100% field capacity and were, respectively, 1.77 and 0.37 g/plant, 7 and 6, 18.4 cm and 0.186 kg/m3. Also, reducing irrigation water by 15%, 30%, and 45% reduced the number of flowers by 25.7%, 32.8%, and 54.3%; and the physical water productivity by 18.8%, 21.5%, and 24.2%, respectively. The highest dry weight of flowers, roots, and lateral branches were observed in magnetic water + irrigation with 100% field capacity, as 0.29, 0.5, and 0.74 g/plant, respectively. The results showed that using a magnetic field increased flower yield and water productivity of Marigold plants under water stress. In this study, the best treatment was 0.6 teslas magnetized water+ 100%FC. However, to apply these stresses at the field level, more research is needed.
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Saber Jamali; Hossein Ansari; Abbas Safarizadeh-sani
Abstract
Peppermint (Mentha piperita L.) is used for medicinal and food purposes. Its cultivation has economic importance, due to its ability to produce and store essential oil. This research was conducted to study the effect of deficit irrigation and magnetized water on yield and yield components of peppermint ...
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Peppermint (Mentha piperita L.) is used for medicinal and food purposes. Its cultivation has economic importance, due to its ability to produce and store essential oil. This research was conducted to study the effect of deficit irrigation and magnetized water on yield and yield components of peppermint in the experimental research greenhouse of Ferdowsi University of Mashhad, during 2018-19. We used a factorial experiment based on the completely randomized design with 3 replications. Irrigation levels consisted of 4 levels (100%, 85%, 70%, and 55% of plant water requirements) and magnetic field factors consisted of 3 levels (0, 0.3, and 0.6 teslas). The result showed that decrease of the water requirement by 15%, 30%, and 45% resulted in reduction of shoot fresh weights by 11.2%, 15.1%, and 36.5%, respectively. However, irrigation with magnetized water (0.3 teslas) under deficit irrigation levels (85%, 70%, and 55% of plant water requirements) resulted in the increase of shoot dry weights by 19.5%, 24.7%, and 66.4%, respectively. In general, the use of magnetic water under water stress enhanced plant growth and improved dry and wet shoot yield in peppermint compared to the control treatment under deficit irrigation conditions.
Saber Jamali; Hossin Ansari
Abstract
In this study, six irrigation treatments including well water (1.23 dS.m-1; control treatment), saline water (15 dS.m-1), alternate saline water and freshwater, mixture of 50:50 saline and freshwater (7.2 dS.m-1), subsurface irrigation with saline water (15 dS.m-1), and subsurface irrigation with well ...
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In this study, six irrigation treatments including well water (1.23 dS.m-1; control treatment), saline water (15 dS.m-1), alternate saline water and freshwater, mixture of 50:50 saline and freshwater (7.2 dS.m-1), subsurface irrigation with saline water (15 dS.m-1), and subsurface irrigation with well water (1.23 dS.m-1) were evaluated on some growth parameters, yield, and biochemical characteristics of Quinoa (CV. Titicaca). The research was done based on completely randomized design including 3 replications as pot planting in the Ferdowsi University of Mashhad, in greenhouse conditions, during 2017-2018. The results showed that the effect of different irrigation regimes on total soluble carbohydrate in leaf and stem, root fresh weight, and root length was significant at 1 percent level (P<0.01), while the leaf and stem fresh weight were significant at 5 percent level (P<0.05). Subsurface irrigation with saline water decreased leaf, stem, root fresh weight; grain yield, 1000 kernel weights, total soluble carbohydrate in leaf and stem by about 14%, 12.1%, 47.9%, 6.5%, and 5.6 %, respectively. Also, total soluble carbohydrate in leaf and stem increased by about 55.3% and 70.09 %, respectively. The alternate irrigation treatment decreased leaf, stem, root fresh weight, grain yield, and 1000 kernel weight by 22.8%, 23.7%, 34.1%, 8.1%, and 7.7%, respectively. Irrigation with saline water (15 dS.m-1) during all of the growth stages decreased grain yield and 1000 kernel weights by 20.8% and 20.0 %, respectively. In this research, sub-surface irrigation treatment with freshwater was the optimum treatment with the highest yield. Thus, if saline water is used, alternate irrigation treatment is recommended.