hossein pourhadian
Abstract
Background: The precise zoning of environmental factors in each region for agricultural activities, provides a very important guide for decision-making by managers and policymakers in the agricultural sector and farmers. Objective: This study was conducted to zoning arable lands in Lorestan province ...
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Background: The precise zoning of environmental factors in each region for agricultural activities, provides a very important guide for decision-making by managers and policymakers in the agricultural sector and farmers. Objective: This study was conducted to zoning arable lands in Lorestan province for summer(second) maize-forage cultivation using GIS and ANP-fuzzy methods in 2022.Research method: First, the raster layer of environmental factors affecting maize-forage cultivation including climatic factors(minimum, maximum and average temperature), topography(altitude and slope) and soil (pH, texture, potassium-available, phosphorus-available, organic matter and total nitrogen) prepared in GIS. Then, using fuzzy functions, the map of each factor was fuzzy and the weight of each factor was determined by ANP. The final layers were produced by combining the weighted layers, finally these layers were zoned into four highly suitable, suitable, marginally suitable and unsuitable layers. Results: The results showed that 96.35% of the study area was highly suitable formaize-forage cultivation and 3.65% was marginally. Except for a small part of the north and south of the agricultural lands of Lorestan province, the rest of the lands was suitable. Evaluation of fuzzy maps showed that highest fuzzy importance is related to climatic factors(0.63) and the least to soil factors(0.53). A separate evaluation of climatic, topographic and soil factors maps indicates that all factors except soil pH limit the cultivation of maize-forage in Lorestan province.Conclusion: The result of this study will provide a logical basis for planning the optimal use of agricultural land, management of maize-forage and increasing farmers' income.
Mehrdad Rasouli; Alireza Noroozisharaf
Abstract
The use of compounds that can improve plant tolerance to abiotic environmental stress, including salinity, is important. To evaluate the adjustment of salinity stress using humic acid (HA), a factorial layout is conducted based on a complete randomized design with three replications on the Hypericum ...
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The use of compounds that can improve plant tolerance to abiotic environmental stress, including salinity, is important. To evaluate the adjustment of salinity stress using humic acid (HA), a factorial layout is conducted based on a complete randomized design with three replications on the Hypericum perforatum L. as an Iranian medicinal plant are collected from Hamadan province in the tissue culture laboratory of the Faculty of Agriculture, Sayyed Jamaleddin Asadabadi University during 2019. Experimental treatments include NaCl as salinity at three levels (such as 0, 50, and 100 mmol.L-1) and HA at four levels (control, 25, 50, and 100 mg.L-1). Results indicate that the plants treated with 50 mg.L-1 HA without salinity have had the highest germination percentage (98.65), germination rate (38.94) and root length (34.21 mm). The highest plant height, fresh and dry weight of both shoots and roots and total chlorophyll are obtained under control conditions and HA with a concentration of 100 mg.L-1. On the contrary, the highest amount of phenol in the treatment is 50 mmol.L-1 salinity and HA with a concentration of 50 mg.L-1. In the treatment of 100 mmol.L-1 salinity and HA with a concentration of 50 mg.L-1, the highest amount of total antioxidants (99.77 mg/g FW) and total flavonoids (2.39 mg/Qe g FW) and the lowest amount of hydrogen peroxide (9.12 µg/g FW) are obtained. Results show that the mitigating effect, especially the application of HA of 50 mg.L-1 levels, can affect the physiological processes and morphological traits of the Hypericum perforatum L. under salinity stress.
Mehrdad Ranjbar; Hadi Ghorbani; Mehdi Ghajar Sepanlou
Abstract
In order to investigate the effect of long-term application of Municipal Solid Waste Compostand chemical fertilizer on concentration of macro elements (N, P and K) in the soil and rice, an experiment was carried out as a randomized complete blocks design with three replications and 14 fertilizer treatments ...
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In order to investigate the effect of long-term application of Municipal Solid Waste Compostand chemical fertilizer on concentration of macro elements (N, P and K) in the soil and rice, an experiment was carried out as a randomized complete blocks design with three replications and 14 fertilizer treatments in 2014. Fertilizer treatments included the control (without fertilizer and organic fertilizer), fertilizer treatments (based on the soil analysis), and treatments of 15, 30 and 45 tons of municipal solid waste compost per hectare as simple form along with 1/4, 2/4 and 3/4 of chemical fertilizer. Results showed that 7-year application of municipal solid waste compost increased significantly the concentration of some macro nutrients (nitrogen, phosphorus and potassium) in soil and rice grain compared with the control treatment (P<0.01). The highest concentration of macro elements in soil was obtained in 45 tons of municipal solid waste compost plus 75% fertilizer treatment, which showed 73.68% increase in nitrogen concentration, 230% increase in the concentration of phosphorus and 30.74% increase in potassium concentration in comparison to the control treatment. The highest concentration of potassium element in rice grain was obtained 45 tons in municipal solid waste compost plus 75% fertilizer treatment. The lowest concentration of macro elements was in soil and rice in the control treatment and chemical fertilizer. Finally, Municipal Solid waste compost can be combined for fertilizer to increase the concentration of some macro elements in soil and rice.