مدلسازی و مدیریت آب و خاک (May 2022)
Effect of irrigation supplements, Abyar & Absar on morphological characteristics of Atriplex canescens under greenhouse conditions
Abstract
Introduction Precipitation deficiency, its uneven spatio-temporal distribution, groundwater decline, and water loss in traditional irrigation systems, make it necessary to introduce appropriate solutions to improve the soils in arid areas. Meanwhile, the optimal use of rainfall, should be a priority in water-scarce areas. Achieving these objectives can be an effective factor in reduction of irrigation costs in planting projects in desert areas. The effect of these supplements on plant traits has been less studied. In this regard, the effect of Abyar and Absar irrigation supplements on the amount and duration of irrigation and soil properties of planting areas has been investigated. Therefore, this study investigates the efficiency of different concentrations of two irrigation supplements on some morphological characteristics (plant traits) of A. canescens in vitro conditions.Materials and Methods A completely randomized design with three treatments and three replications at concentrations of 1:1000, 1:2500 and 1:5000 in a five-months period under greenhouse conditions. In addition, the structural and biomass traits of aerial and underside of A.canescens rootstocks were measured in different treatments. At the end of the research period and removal of seedlings from the soil, plant traits of aerial parts and subsurface, including; shoot length, shoot weight, shoot dry weight, and increase shoot height and root length, root weight and root dry weight were measured for each replication. The statistical analysis was performed by using Duncan test.Results and Discussion The results showed that the effect of supplements on root length and fresh and dry weight of the plant was not significant. Based on the results, the effect of supplements on root width was increasing and had a significant effect at 95% confidence level. the effect of supplements on the length, weight and dryness of the shoot was significant and increasing. However, the effect of supplements on increasing the height of the aerial part was significantly reduced at 95% confidence level. Overall, an increase in the concentration of the supplements showed a negative effect on the structural and biomass traits of aerial and species. Therefore, the use of irrigation supplements with low concentrations (1:1000 and 1:2500) for structural and biomass of A.canescens transplants is recommended in greenhouse conditions and before their transfer to the natural environment.Conclusion The use of Abyar & Absar, has negative effects on the structural and biomass traits of aerial parts and root of A. canescens. Also, it had a significant effect on root width only among root characteristics. The effect of supplements on the amount of root length and their wet and dry weight was not significant. The effect of supplements on the width, length, weight and dryness of the shoot was significant and increasing. It is suggested to investigate the effects of irrigation supplements on plant traits and characteristics of different species in different field conditions as well as other concentrations.
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