16 research outputs found
Evaluation of plant-mediated Silver nanoparticles synthesis and its application in postharvest Physiology of cut Flowers
No full textThe application of new environmentally friendly compounds on postharvest characteristics of cut carnation (Dianthus caryophyllus L.)
No full textApplication of Biogenic and Non-biogenic Synthesized Metal Nanoparticles on Longevity of Agricultural Crops
No full text
بررسی وجود آلودگی مس در لایه سطحی خاک تاکستان های ملایر
No full textBackground and Aims: Soil contamination by copper (Cu) very often occurs in the soil surface layer of vineyard cultivations, due to the heavy use of copper fungicides in order to protect against fungal grape diseases. The objective of this study was therefore to evaluate copper concentration in the superficial layer of vineyard cultivation in Malayer, Iran, and also to prepare the pollution map of copper in this region.Materials and Methods: Twenty five surface soil samples (0-20 cm) of Malayer vineyard region were collected and consequently were subjected to Cu concentration assessment. Soil samples were air dried and sieved, and the categorized <0.149 mm fraction was used in subsequent digestion operation. The concentrations of Cu in extracted solutions were determined by Flame Atomic Absorption Spectrophotometry. The inverse distanceweighting (IDW) method was used to interpolate copper concentrations in the whole study area owing to the limited amount of data.Results: The low concentrations of copper in the range of 3.95 to 15.09 mg/kg with a mean value of 7.36 mg/kg were noticed in the studied vineyard soils. The total Cu concentrations were generally similar to those reported for natural soils.Conclusion: Observed low concentrations of copper in studied vineyard cultivations and indeed homogeneous distribution of copper in the soil, implies that the copper concentrations were controlled by geological processes. Heterogeneous distribution of Cu in the small part of southern region could be linked with anthropogenic impacts.زمينه و هدف: آلودگي فلزي خاک به ويژه توسط مس پديدهاي است که اغلب در لايه سطحي خاکهاي تاکستان به دليل استفاده مکرر از قارچ کش هاي مسي براي کنترل بيماريهاي انگور اتفاق ميافتد. هدف از اين پژوهش بررسي غلظت مس در خاک سطحي باغهاي انگور ملاير و تهيه نقشه آلودگی مس در منطقه مورد مطالعه بود.
مواد و روشها: براي ارزيابي وضعيت مس 25 نمونه خاک سطحی از لايه 0 تا 20 سانتيمتر تاكستانهاي ملاير برداشت شد. همه ﻧﻤﻮﻧﻪﻫﺎي ﺧﺎک در ﻫﻮاي آزاد ﺧﺸﮏ شده و پس از الک شدن، ذرات کمتر از 149/0 ميليمتر براي عمليات هضم استفاده شدند. غلظت مس در نمونههای خاک توسط دستگاه جذب اتمي به روش شعله تشخیص داده شد. روش وزندهي فاصله معکوس براي درونيابي غلظت مس در کل منطقه مورد مطالعه به دليل دادههاي محدود به کار برده شد.
يافتهها: غلظتهاي پاييني از مس در خاک تاکستان شناسايي شده است به گونهاي که دامنه غلظت مس در اين خاکها بين 95/3 تا 09/15 mg/ kg با ميانگين 36/7 بود. به طور کلي غلظت مس در خاک باغهاي انگور ملاير مشابه با غلظت گزارش شده براي خاکهاي طبيعي بود.
نتيجه گيري: مقادير پايين غلظت مس در خاک تاکستانها از یک طرف و از طرف دیگر نقشه کمابیش همگن پراکنش غلظت مس در آنها حاکی از آن است که غلظت مس در منطقه به دست فرآيندهاي زمين شناسي کنترل ميشود. توزيع ناهمگون غلظت مس در بخش کوچکی از جنوب منطقه نشان دهنده اثرات انساني است
Biomonitoring of airborne Cu, Pb, and Zn in an urban area employing a broad leaved and a conifer tree species
No full textRole of irrigation water, inorganic and organic fertilizers in soil and crop contamination by potentially hazardous elements in intensive farming systems: Case study from Moghan agro-industry, Iran
No full textAssessment of Copper Pollution in the Surface Layer of Vineyard Soils in Malayer, Iran
No full textBackground and Aims: Soil contamination by copper (Cu) very often occurs in the soil surface layer of vineyard cultivations, due to the heavy use of copper fungicides in order to protect against fungal grape diseases. The objective of this study was therefore to evaluate copper concentration in the superficial layer of vineyard cultivation in Malayer, Iran, and also to prepare the pollution map of copper in this region.Materials and Methods: Twenty five surface soil samples (0-20 cm) of Malayer vineyard region were collected and consequently were subjected to Cu concentration assessment. Soil samples were air dried and sieved, and the categorized <0.149 mm fraction was used in subsequent digestion operation. The concentrations of Cu in extracted solutions were determined by Flame Atomic Absorption Spectrophotometry. The inverse distanceweighting (IDW) method was used to interpolate copper concentrations in the whole study area owing to the limited amount of data.Results: The low concentrations of copper in the range of 3.95 to 15.09 mg/kg with a mean value of 7.36 mg/kg were noticed in the studied vineyard soils. The total Cu concentrations were generally similar to those reported for natural soils.Conclusion: Observed low concentrations of copper in studied vineyard cultivations and indeed homogeneous distribution of copper in the soil, implies that the copper concentrations were controlled by geological processes. Heterogeneous distribution of Cu in the small part of southern region could be linked with anthropogenic impacts.Key words: Copper, Malayer, Vineyard soil
Improving quality of strawberry by novel essential oil nanoemulsions of Echinophora platyloba combined with Aloe vera gel and gum arabic
No full textAbstract Strawberry fruits are highly perishable and have a limited shelf life. Therefore, effective methods such as essential oils (EOs) and edible coatings are required to mitigate spoilage and maintain fruit quality during storage. In the current study, Echinophora platyloba EO was extracted and subsequently formulated into a nanoemulsion. The strawberries were then coated using an immersion method with the prepared nanoemulsions, gum Arabic (GA), and Aloe vera gel (AV). The coating treatments included: distilled water control, 5% GA, 20% AV, 0.5% E. platyloba essential oil, 5% GA + 0.5% E. platyloba nanoemulsion essential oil, and 20% AV + 0.5% E. platyloba nanoemulsion EO. The quality of strawberries was assessed over a storage period of 3, 6, 9, 12, and 15 days. The results revealed that the EO nanoemulsion in combination with GA and AV gel coatings provided superior preservation compared to the control and single-component treatments (pure EO, GA, or AV gel). Coatings with 5% GA + 0.5% EO nanoemulsion and 20% AV + 0.5% EO nanoemulsion demonstrated the highest firmness while achieving the lowest weight loss, titratable acidity (TA), total soluble solids (TSS), TSS/TA ratio, decay percentage, and tissue browning at the end of the storage period. Notably, the decay index in the 20% AV + 0.5% EO nanoemulsion treatment was 17% lower than the 5% GA + 0.5% EO nanoemulsion treatment and 75% lower than other treatments after the experiment. These coatings are recommended due to their eco-friendly, biodegradable nature and cost-effectiveness, making them a promising solution for enhancing the shelf life and quality of strawberries
Response of black mulberry onto white mulberry rootstock to stenting (cutting-grafting) techniques and IBA concentrations
No full textOrnamental black mulberry (Morus nigra L.) is used in landscape. Ornamental black mulberry which has high shade, tolerates air pollution and wind. White mulberry (Morus alba L.) is proper for kind of soils conditions. Therefore, this research was conducted to investigate the effects of stenting methods and IBA levels on some characters of black mulberry scions onto white mulberry rootstock for the first time. For this purpose, an experiment was carried out as factorial in completely randomized design with 10 replications. Two factors were including two stenting method (splice and omega) and three levels of Indole-3-butyric acid (0, 500 and 1000 mg L-1). Three months after grafting, percentage of rootstock callus formation, percentage of rooting, percentage of leaf formation, number of leaf formation, the longest shoot and the longest root formation were measured. Results showed that the effect of stenting method was significant on all of evaluated parameters and splice method was superior to omega method. Also, the effects of different levels of IBA were significant on all of measured traits and they are increased by increasing the levels of IBA and the best was with 1000 mg L-1. The interaction effects of these factors are significant on all of measured characteristics except for percentage of rootstock callus formation and rooting percentage. In conclusion, the stenting via splice method had higher success in comparison with omega method and the morphological traits increased by increasing the application of higher levels of IBA. The application of stenting method by splice plus 1000 mg L-1 IBA which was carried out for the first time is recommended for reproduction of ornamental black mulberry onto white mulberry
