scholarly journals Morais Ultramafic Complex: A Survey towards Nickel Phytomining

Resources ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 144 ◽  
Author(s):  
Ana R. A. Alves ◽  
Eduardo F. Silva ◽  
Luís A. B. Novo
Keyword(s):  
Crop Production ◽  
Soil Samples ◽  
High Concentration ◽  
Additional Source ◽  
Aerial Parts ◽  
Ultramafic Complex ◽  
Nickel Accumulation ◽  
Alyssum Serpyllifolium ◽  
Local Farmers

Ultramafic areas are critical for nickel (Ni) phytomining due to the high concentration of this element in their soils and the number of hyperaccumulators they harbor. The aim of the present study was to evaluate the potential of the Morais massif, an ultramafic area in Portugal, for phytomining using the hyperaccumulator species Alyssum serpyllifolium subsp. lusitanicum. Soil samples and A. serpyllifolium specimens were collected in four locations of the Morais massif. After determination of Ni concentrations in the samples, the results show that soil pseudo-total Ni concentrations in sites number 1 and 2 are significantly higher than in the soil samples collected in the other two locations, with 1918 and 2092 mg kg−1, respectively. Nickel accumulation is significantly greater in the aerial parts of plants collected at sites 1, 2, and 4, presenting Ni harvestable amount means of 88.36, 93.80, and 95.56 mg per plant, respectively. These results suggest that the sites with highest potential for phytomining are sites 1, 2, and 4. A nickel agromining system in these locations could represent an additional source of income to local farmers, since ultramafic soils have low productivity for agriculture and crop production.

scholarly journals Quantification of the Starling Population, Estimation and Mapping of the Damage to Olive Crops in the Apulia Region

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1119
Author(s):  
Francesco Bozzo ◽  
Simona Tarricone ◽  
Alessandro Petrontino ◽  
Prospero Cagnetta ◽  
Giacomo Maringelli ◽  
...  
Keyword(s):  
Crop Production ◽  
Agricultural System ◽  
High Concentration ◽  
Apulia Region ◽  
Damage Quantification ◽  
Cash Compensation ◽  
Compensation Claims ◽  
Potential Damage ◽  
Local Farmers

The presence of wildlife in areas with a high concentration of farming activities can create a conflict between conservation objectives and productive purposes. Near Brindisi (Apulia, S-E Italy), a substantial amount of cash compensation claims for damages reported by local farmers and attributed to starlings (Sturnus vulgaris) has been registered. The aim of this study was to quantify the starling population wintering in the Apulia region, in order to assess the potential damage to crop production caused by this species. Our analysis was conducted over three years and included three main activities: a study of starling abundance and movements, the identification of areas and crops affected by damages, and a determination of the damage to the agricultural system in terms of quantity and concentration (heatmap). The study showed a loss of expected production that was coherent with the eating capacity of starlings wintering in the region. This means a loss, in terms of gross profitable production, of around 550,000 euros concentrated in a few narrow areas close to the roosts. Results on species behavior, damage quantification, and mapping are useful elements aimed to activate trade-off measures to preserve production and protection objectives, and to allow policymakers to address enforcement interventions and to establish parameters for financial compensation.

scholarly journals Phenolic Composition and Skin-related Properties of the Aerial Parts Extract of Different Hemerocallis Cultivars

Antioxidants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 690 ◽  
Author(s):  
Katarzyna Szewczyk ◽  
Małgorzata Miazga-Karska ◽  
Wioleta Pietrzak ◽  
Łukasz Komsta ◽  
Barbara Krzemińska ◽  
...  
Keyword(s):  
Antimicrobial Properties ◽  
Total Phenolic ◽  
Phenolic Composition ◽  
Flavonoid Content ◽  
Eastern Asia ◽  
High Concentration ◽  
Health Value ◽  
Aerial Parts ◽  
Bioactive Agents

Hemerocallis plants are important vegetables with nutritional and health value, especially in eastern Asia, where they have been used as medicines to cure disease such as depression and inflammation for thousands of years. The present study concerns the determination of flavonoids and phenolic acids, as well as antioxidant, anti-collagenase, anti-elastase, anti-tyrosinase and antimicrobial properties of taxa cultivated in Poland. For chemical composition estimation, LC-ESI-MS/MS analysis and spectrophotometric assays were performed. The results show the presence of sixteen compounds in all analyzed species. Among the investigated cultivars, it was found that H. “Chicago Apache” and H. fulva var. kwanso have the highest total phenolic acid and flavonoid content. The most abundant compounds in all analyzed extracts were chlorogenic acid (209.8 to 1010.0 µg/g of DE) and quercetin-3-O-rutinoside (114.7 to 1049.7 µg/g of DE). The studied extracts exhibited moderate to high skin-related activities. These properties were correlated with a high concentration of polyphenols. The present study demonstrated that Hemerocallis cultivars contain significant amounts of phenolic compounds with good skin-related activities and could be interesting as novel sources of bioactive agents for the pharmaceutical, food and cosmetic industries.

Nickel accumulation by Alyssum serpyllifolium subsp. lusitanicum (Brassicaceae) from serpentine soils of Bragança and Morais (Portugal) ultramafic massifs: plant–soil relationships and prospects for phytomining

2015 ◽  
Vol 63 (2) ◽  
pp. 17 ◽  
Author(s):  
I. Morais ◽  
J. S. Campos ◽  
P. J. C. Favas ◽  
J. Pratas ◽  
F. Pita ◽  
...  
Keyword(s):  
Ammonium Acetate ◽  
Unit Area ◽  
Dry Weight ◽  
Serpentine Soils ◽  
Natural Conditions ◽  
Plant Soil ◽  
Aerial Parts ◽  
Nickel Accumulation ◽  
Alyssum Serpyllifolium

The aim of the present study was to evaluate the possibility of using Alyssum serpyllifolium Desf. susbp. lusitanicum T.R.Dudley & P.Silva (Brassicaceae) for phytomining nickel (Ni)-rich bio-ore from serpentine soils. This species is endemic to serpentine soils of the Bragança and Morais massifs and is a Ni hyperaccumulator, containing more than 7000 mg kg–1 (dry weight) of this element. The variability of the Ni concentrations contained in the plant at different locations was verified as was its relationship with the total Ni contained in the soil or with the bioavailable Ni fraction extracted with ammonium acetate. We evaluated the biomass produced under natural conditions, and, on the basis of these values, we estimated the amount of Ni that can be removed per unit area. The results showed that considering only the aerial parts of the plant, the biomass varies between 7.04 and 9.37 t ha–1, containing a range of 0.12–0.70% Ni, allowing a withdrawal of between 12.2 and 44.0 kg Ni ha–1 per crop under natural conditions.

Comparative Advantage of Using Biopesticides in Ukrainian Agroecosystems

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
Hasrat Arjjumend ◽  
Konstantia Koutouki ◽  
Olga Donets
Keyword(s):  
Shelf Life ◽  
Crop Production ◽  
Plant Protection ◽  
Agricultural Practices ◽  
Crop Productivity ◽  
Poor Quality ◽  
Soil Biology ◽  
Chemical Contamination ◽  
High Concentration ◽  
Irreversible Damage

The use of unsustainable levels of chemical fertilizers and plant protection chemicals has resulted in a steady decline in soil and crop productivity the world over. Soil biology has undergone irreversible damage, coupled with a high concentration of toxic chemical residues in plant tissues and human bodies. Agricultural practices must evolve to sustainably meet the growing global demand for food without irreversibly damaging soil. Microbial biocontrol agents have tremendous potential to bring sustainability to agriculture in a way that is safe for the environment. Biopesticides do not kill non-target insects, and biosafety is ensured because biopesticides act as antidotes and do not lead to chemical contamination in the soil. This article is part of a larger study conducted in Ukraine by researchers at the Université de Montréal with the support of Mitacs and Earth Alive Clean Technologies. The responses of farmers who use biofertilizers (“user farmers”) and those who do not (“non-user farmers”), along with the responses of manufacturers or suppliers of biofertilizers, and research and development (R&D) scientists are captured to demonstrate the advantages of applying microbial biopesticides to field crops. Participants reported a 15-30% increase in yields and crop production after the application of biopesticides. With the use of biopesticides, farmers cultivated better quality fruits, grains, and tubers with a longer shelf life. Moreover, while the risk of crop loss remains high (60-70%) with chemically grown crops, this risk is reduced to 33% on average if crops are grown using biopesticides. The findings indicate that a large proportion of farmers would prefer to use biopesticides if they are effective and high quality products. In this context, the quality and effectiveness of products is therefore very important. Despite their benefits to soil, human health, and ecosystems, biopesticides face significant challenges and competition vis-à-vis synthetic pesticides for a variety of reasons. Therefore, the development of biopesticides must overcome the problems of poor quality products, short shelf life, delayed action, high market costs, and legal/registration issues.

Assessment of Irrigation Quality of Disposal Water of Ashuganj-Polash Agro-Irrigation Project, Brahmanbaria Bangladesh

2017 ◽  
Vol 4 (04) ◽  
Author(s):  
ABDUR RAZZAK ◽  
PARSA SANJANA ◽  
BELAL HOSSAIN ◽  
DEBJIT ROY ◽  
BIDHAN CHANDRA NATH
Keyword(s):  
Soil Sample ◽  
Water Samples ◽  
Crop Production ◽  
Soil Samples ◽  
Chemistry Laboratory ◽  
Total Hardness ◽  
Sodium Absorption ◽  
Irrigation Project ◽  
Crop Field ◽  
Initial Soil

The study was conducted at Ashuganj-Polash agro-irrigation project (APAIP), Brahmanbaria,aim to determine the chemical properties of power plant disposal water and to assess its suitability for irrigation. Initial soil samples (before irrigating crop field) and final soil samples (after crop harvesting) were collected. During irrigation ten water samples (six from crop field and four from irrigation canals) were collected for analysis. All soil samples were analyzed in Humboldt soil testing laboratory and water samples in bio-chemistry laboratory of Bangladesh Agricultural University and compared to FAO irrigation standard. Results show thatthe sodium absorption ratio (SAR) (0.53 to 0.88), residual sodium bi-carbonate (0.8 to 1.3meq L-1), Kelly’s ratio (0.31 to 0.6) and total hardness (85 to 150) found in normal range and largely suitable for irrigation. Soluble sodium percentage values found in satisfactory (20.26 to 41.1) level and magnesium absorption (57.1 to 76.4) found unsuitable for irrigation. Statistically similar value of pH, EC, total nitrogen, organic carbon, calcium, magnesium and phosphorus in initial and final soil sample were observed. But potassium and sulfur value reduced in final soil sample from initial soil. The water samples fall within the permissible limit and found suitable for crop production

RETRACTED: Determination of Co(II) in water and soil samples using spectrophotometry coupled with preconcentration on 4-amino methyl pyridine anchored silica gel column

2007 ◽  
Vol 146 (1-2) ◽  
pp. 137-141 ◽  
Author(s):  
C. Sivani ◽  
G. Ramakrishna Naidu ◽  
J. Narasimhulu ◽  
D. Rekha ◽  
J. Dilip Kumar ◽  
...  
Keyword(s):  
Silica Gel ◽  
Soil Samples ◽  
Water And Soil Samples ◽  
Methyl Pyridine
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