EFFECTS OF PHOSPHORUS CONCENTRATION ON Cu, Zn, Fe AND Mn UTILIZATION BY WHEAT

1974 ◽  
Vol 54 (4) ◽  
pp. 357-367 ◽  
Author(s):  
G. J. RACZ ◽  
P. W. HALUSCHAK
Keyword(s):  
Element Concentration ◽  
Iron Concentration ◽  
Calcareous Soils ◽  
Phosphorus Fertilization ◽  
Phosphorus Concentration ◽  
High Phosphorus ◽  
Manganese Zinc ◽  
Ion Antagonism ◽  
Iron Manganese ◽  
Nutrient Solutions

Greenhouse studies were conducted in which various amounts of phosphorus were added to calcareous and noncalcareous soils, and the iron, manganese, zinc and copper utilization by wheat were determined. Wheat yields were significantly increased by phosphorus fertilization; mean yields on the noncalcareous soils were greater than on the calcareous soils. Plant micro-element concentration and uptake were reduced in many instances when large amounts of phosphorus were applied. Plants grown on the calcareous and noncalcareous soils had similar concentrations of iron, manganese and copper. However, plants grown on the calcareous soils tended to contain lower amounts of zinc than plants grown on the noncalcareous soils. Concentration of micro-elements in soil-water extracts of phosphated soils, particularly for the noncalcareous soils treated with large amounts of phosphorus, tended to be greater than for nonphosphated soils. Yields were usually not affected when phosphorus at 2–100 ppm was added to nutrient solutions. Zinc and copper concentration and uptake were usually greater for plants grown in a 2-ppm phosphorus solution than for plants grown in solutions of higher concentration. In several instances, plant iron concentration and uptake were also reduced by high phosphorus concentration. Manganese uptake appeared not to be affected by phosphorus concentration. Increasing the micro-element concentration of nutrient solutions at various phosphorus concentrations did not affect yields but increased plant micro-element concentration and uptake, indicating that ion antagonism was mainly responsible for the lower utilization of microelements in high phosphorus media.

scholarly journals Calcium, Magnesium and Micronutrient Uptake in Watercress (Nasturtium officinale) under Arsenic and Salinity Stress Conditions

2021 ◽  
Vol 2 (4) ◽  
pp. 251-255
Author(s):  
J Sufian ◽  
A Golchin ◽  
A Avanes
Keyword(s):  
Heavy Metals ◽  
Nutrient Solution ◽  
Nasturtium Officinale ◽  
Manganese Zinc ◽  
Randomized Design ◽  
Micronutrient Uptake ◽  
Salinity Levels ◽  
Calcium Magnesium ◽  
Iron Manganese ◽  
Nutrient Solutions

Heavy metals are elements that mainly have a 5-22 gr.cm-3 specific gravity. Some of these metals are essential micronutrients for plant growth (Such as Zinc (Zn), Copper (Cu), Manganese (Mn), Nickel (Ni) and Cobalt (Co)). Some other heavy metals, have a high toxicity properties such as Lead (Pb), Cadmium (Cd) and Mercury (Hg). In order to investigate the potential of watercress (Nasturtium officinale) in the uptake of elements from nutrient solutions with different salinities, a factorial experiment was conducted in a completely randomized design with three replications in the greenhouse. In this experiment, different levels of arsenic were zero, 5, 10, 20, 40, 40, 80 and 160 mg.L-1, which were obtained from sodium arsenate source and added to Epstein’s nutrient solution to obtain the mentioned concentrations. The salt concentration of the nutrient solution was 0, 10, 20, 40 and 80 mM which was prepared from sodium chloride source and added to Epstein solution. After making nutrient solutions with different salinity and concentrations, watercress was cultivated. The ANOVA results showed that the interaction of salinity and arsenic levels on the calcium, magnesium, iron, manganese, zinc and copper concentrations in watercress was significant at the level of one percent probability. The highest concentrations of these elements were obtained in the levels without salinity and arsenic and the lowest values were obtained in the 80 mM salinity levels and 160 mg.l-1 arsenic.

scholarly journals Volumetric Quantification and Quality of Water Stored in a Mining Lake: A Case Study at Reocín Mine (Spain)

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 212
Author(s):  
Noemí Barral ◽  
Raúl Husillos ◽  
Elena Castillo ◽  
Manuel Cánovas ◽  
Elizabeth J. Lam ◽  
...  
Keyword(s):  
Human Consumption ◽  
Business Opportunity ◽  
Manganese Zinc ◽  
Quality Of Water ◽  
New Business ◽  
Volumetric Quantification ◽  
Zinc Mine ◽  
Iron Manganese

This study deals with the potential use of water stored in a lake formed by Reocín’s old zinc mine, which has become the second most important reservoir in Cantabria, with a flow of 1300 L s−1. The methodology used is based on the hydrogeological and hydrochemical characterization of the area studied. A total of 16 piezometers were installed to monitor the amount and quality of water. Results obtained show a pH close to 8 and iron, manganese, zinc, and sulphate concentrations lower than 0.05 mg L−1, 0.05 mg L−1, 1.063 mg L−1, and 1305.5 mg L−1, respectively. The volume of the water stored in the lake amounts to 34 hm3. Measurements show that Fe, Mn, and Zn concentrations are below the limits acceptable for human consumption, according to the Spanish 0.2, 0.05, and 5.0 mg L−1 standards, respectively, while sulphate greatly exceeds the 250 mg L−1 limit accepted by the norm. Therefore, the water could be apt for human consumption after a treatment appropriate for decreasing the sulphate level by, for example, reverse osmosis, distillation, or ion exchange. Although industrial and energy uses are possible, the lake water could be utilized as a geothermal energy source. The management of the hydric resources generated when a mine is closed could improve the economic and environmental conditions of the zone, with all the benefits it brings about, thus allowing for compensating of the pumping cost that environmental protection entails, creating, at the same time, a new business opportunity for the company that owns the mine.

Copper, Iron, Manganese, Zinc, Cobalt, Arsenic, Cadmium, Chrome, and Lead Concentrations in Liver and Muscle in Iranian Camel (Camelus dromedarius)

2019 ◽  
Vol 194 (2) ◽  
pp. 390-400
Author(s):  
Mehdi Asli ◽  
Mohammad Azizzadeh ◽  
Amir Moghaddamjafari ◽  
Mohammad Mohsenzadeh
Keyword(s):  
Camelus Dromedarius ◽  
Manganese Zinc ◽  
Iron Manganese

scholarly journals Corrective and maintenance phosphorus fertilization on sugarcane yield in Oxisols

2021 ◽  
Vol 56 ◽  
Author(s):  
Thomaz Adolpho Rein ◽  
João de Deus Gomes dos Santos Junior ◽  
Djalma Martinhão Gomes de Sousa ◽  
Wellington Pereira de Carvalho ◽  
Gabriel de Castro Lemes
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Availability ◽  
Cane Yield ◽  
Phosphorus Fertilization ◽  
Saccharum Spp ◽  
High Phosphorus ◽  
Sugarcane Yield

Abstract The objective of this work was to evaluate sugarcane (Saccharum spp.) yield in response to corrective and maintenance phosphorus fertilization in Oxisols. Two experiments were carried out in randomized complete blocks with four replicates. In the corrective fertilization treatments, 150 kg ha-1 P2O5 were broadcast and incorporated before planting. In the maintenance fertilization treatments, 40 kg ha-1 P2O5 per year were applied over the trash blanket. All treatments, except the control, were fertilized with 170 kg ha-1 P2O5 in the planting furrow. The first experiment was carried out in a sugarcane expansion area and the second, in a replanting area, in Oxisols with a low and high phosphorus availability, respectively. In the first experiment, corrective fertilization increased cane yield in 13.4 Mg ha-1 for plant cane and in 14.6 Mg ha-1 for the average of four ratoon crops, whereas maintenance fertilization increased yield in 17.7 and 8.1 Mg ha-1 for the average of four ratoon crops for the treatments without and with corrective fertilization, respectively. In the second experiment, there were no significant differences between treatments regarding yield. Corrective and maintenance phosphorus fertilization should be considered for sugarcane in areas where soil phosphorus availability is limiting.

scholarly journals CHEMICAL COMPOSITION OF WHOLE GRAINS IN COMMON BEANS LANDRACES AND BREEDING GENOTYPES

2015 ◽  
Vol 2 ◽  
pp. 81 ◽  
Author(s):  
Gilberto Antonio Peripolli Bevilaqua ◽  
Iraja Ferreira Antunes
Keyword(s):  
Nutritional Composition ◽  
Whole Grain ◽  
Breeding Programs ◽  
Breeding Lines ◽  
Manganese Zinc ◽  
Nutritional Characteristics ◽  
Calcium Magnesium ◽  
The Common ◽  
Iron Manganese ◽  
Insoluble Fiber

The common bean has been object of breeding programs aiming the development of new cultivars adapted to varied production system and shown differentiated nutritional characteristics. Due a genetic diversity existent the landraces can be used directly for cropping, for present characteristics desirable. Little information exists about mineral content and other quality traits for those bean landraces. The aim of this paper was to verify the variability for grain nutricional caracters in breeding cultivars and landraces of bean from Rio Grande do Sul state, Brazil. The experiment was conducted in 2009/2010 in Experimental Station Cascata, of Embrapa Temperate Agriculture. In whole grain of 54 bean genotypes with black and no black coat were determined macroelements (nitrogen, phosphorus, potash, calcium, magnesium and sulfur), oligoelements (iron, manganese, zinc and cuprum), protein and ash content, insoluble fiber, digestive nutrient and antioxidant astragalina. The results shown that the landraces varieties presents nutritional composition of macro and oligoelements, fibers, protein and ash contents in whole grain similar than that of breeding lines and cultivars. The black coat grain from breeding programs showed better nutritional quality for macro and oligoelements content than coloured grain, highlighting TB 02-04 e TB 01-01. The landraces with coloured grains TB 02-26, TB 02-24 and TB 03-13 showed the high levels of astragaline.

Accumulation of Iron, Manganese, Zinc and Cadmium by the Australian Freshwater Mussel Velesunio ambiguus (Phillipi) and Its Potential as a Biological Monitor

1979 ◽  
Vol 30 (6) ◽  
pp. 741 ◽  
Author(s):  
WG Jones ◽  
KF Walker
Keyword(s):  
Body Weight ◽  
South Australia ◽  
Freshwater Mussel ◽  
Short Term ◽  
Manganese Zinc ◽  
Systematic Relationships ◽  
Iron Manganese ◽  
Australian Freshwater ◽  
Iron Concentrations

The accumulation of iron, manganese, zinc and cadmium by freshwater mussels in the River Murray, South Australia, and their response to changes in environmental iron concentrations are considered. Metal loads varied markedly between individuals from the same population. The variability is accounted for partly by systematic relationships between metal loads and body weight and age, but not sex. The distribution of metals between the major organs is discussed, but the analysis of separate organs showed no advantage for biological monitoring. Comparisons between iron concentrations in river water and in mussels showed no clear correspondence. The study suggests that V. ambiguus may not be a good short-term monitor of iron, but still may have potential as a long-term and site-comparison monitor of metals. once inherent variability is taken into account.

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