effects of nickel, copper and cobalt have been reported on growth characters, biomass, yield, etc. of celery, tomato and lentil plants both in ambient and …

Effects of nickel and cobalt on kinetics of methane production in paddy soil. The effect of the addition of nickel on the methane dynamics in paddy is shown in Figs. 2A and 2B. Methane production occurred at very low levels (<500 mg CH 4 kg −1 dry soil) in the group without added sodium acetate and heavy metals (i.e., the control group, ck1)

12%Besides beneficial impacts on plant life, cobalt has some unfavourable effects too. At higher levels, Co is known to decrease the formation of nodules, resulting in reduced development and crop yield. Higher levels of Co also lead to chlorosis and necrosis and inhibition of root formation, hindering the nutrient translocation and water uptake.

1 l.1 Physical and chemical properties of cobalt 1.1.2 Biochemistry of Cobalt 1.1.3 Cobalt in plants and in the environment 1.2 Pnysror.ocrcar. EFFEcrs oF Co oN PLANTS 1.2. 1. Beneficial Effects l.2.2Toncity of Co in plants I.2.2.I Toxic effects of Co on plant yield 1.2.2.2 Toxic effects of Co on seed germination and seedling growth

Cobalt (Co) is an element which is not commonly thought to play as crucial of a role in the health of a plant. However, cobalt is one of the elements which is classified as an essential micronutrient. Cobalt is intimately involved in many different processes of […]

Plant and Soil V, no 1 October 1 953 SOME EFFECTS OF HEAVY METALS ON PLANTS GROWN IN SOIL CULTURE PART I. THE EFFECT OF COBALT ON FERTILISER AND SOIL PHOSPHATE UPTAKES AND THE IRON AND COBALT STATUS OF TOMATO by D. J. D. NICHOLAS and W. D. E. THOMAS Research Station, Long Ashton, Bristol INTRODUCTION

Effect of potassium permanganate, cobalt chloride and vitamin B complex on the haematological parameters of common carp Cyprinus carpio were markedly influenced by a treatment of 2.5 mg/l Cd in the laboratory for 96 hours. Hb% and ESR values were increased but the RBC and PCV values were reduced. Tr …

Nadia Gad, 2005a. Interactive effect of cobalt and salinity on tomato plants II- Some physiological parameters as affected by cobalt and salinity. Research Journal of Agriculture and Biological Sciences Pakistan. 1(3): 270-276. Nadia Gad, 2005 b. Effect of cobalt on tomato growth, yield and fruit quality. Egypt. J. Appl. Sci., 20(4): 260-270.

1. An account is given of the present position of our knowledge with regard to the distribution and the physiological importance of nickel and cobalt, in relation to plants and animals. 2. Experiments on barley and broad beans were carried out in water cultures with the sulphates and chlorides of cobalt, nickel and copper. 3.

Effect of Aluminum and Coba lt on the Nucleic Acid Content and Ribonuclease Acitivty i n the Growth Points of Sunflower Under W ater Deficit Conditions 37728. Russ.J.Plant Physiol.(Transl.of Fiziol.Rast.15(1):116-122) 68, 94-99 Media Brenchley, W. E. 193 8. Comparative Effects of Cobalt, Nickel and Copper on Plant Growth. Ann.Appl.Biol. 25[4 ...

Plants can be defined as a hyperaccumulator if it can concentrate the pollutants in a minimum percentage which varies according to the pollutant involved (for example, more than 1000 mg/kg of dry weight for nickel, copper, cobalt, chromium or lead; or more than 10,000 mg/kg for zinc or manganese).

When plants grow on contaminated soils they will accumulate very small particles of cobalt, especially in the parts of the plant we eat, such as fruits and seeds. Soils near mining and melting facilities may contain very high amounts of cobalt, so that the uptake by humans through eating plants can cause health effects.

12%The beneficial effects of cobalt include retardation of senescence of leaf, increase in drought resistance in seeds, regulation of alkaloid accumulation in medicinal plants, and inhibition of ethylene biosynthesis. In lower plants, cobalt tolerance involves a cotolerance mechanism.

Effect of cobalt chloride on soybean seedlings subjected to cadmium stress Contamination of the environment with heavy metals such as Cd is a serious problem of modern world. Exposure of plants to Cd leads to oxidative stress, inhibition of respiration and photosynthesis, increased rate of mutation and, as a consequence, stunted growth and ...

Being an element derived naturally from the earth, the amount of cobalt in plant and animal dietary sources depends on the concentration of mineral deposits in the soil and water bodies from where the foods are procured. Myriad foods are rich in cobalt, including: Green leafy vegetables such as cabbage, lettuce, spinach, turnips, kale.

However, up to now, there is no study done on the effects of nanoscale zerovalent cobalt (NZVC) on chlorophyll a fluorescence in plants. In this study, the effects of NZVC on growth (such as the plant height, dry weights of stems and leaves and leaf area) and photosynthetic parameters of soybean plants were studied.

Cobalt is an essential component of several enzymes and co-enzymes. It has been shown to effect growth and metabolism of plants, in different degrees, depending on the concentration and status of cobalt in rhizoshere and soil. Cobalt increase cytoplasmic osmotic pressure, leaf resistance to dehydration and decreased

Nickel, in low concentrations, fulfills a variety of essential roles in plants, bacteria, and fungi. Therefore, Ni deficiency produces an array of effects on growth and metabolism of plants, including reduced growth, and induction of senescence, leaf and meristem chlorosis, alterations in N metabolism, and reduced Fe uptake.

8-100 in µg g-1 dry wt. on land plants [9]. 2.2 Effect of heavy metals The heavy metals available for plant uptake are those present as soluble components in the soil solution or those solubilized by root exudates [10]. Plants require certain heavy metals for …

the general health effects observed following exposure. Chapter 2: Relevance to Public Health: The Relevance to Public Health Section evaluates, interprets, and assesses the significance of toxicity data to human health. ... COBALT xvi 3.2.2.5 Reproductive Effects ...

10 pointed that cobalt was used to reduce the harmful effect of salinity on tomato plants, transpiration rate being reduced. 11 showed that cobalt reduce the salinity and / or ethrel injury on tomato plants, a suggestion being introduced for possible use of cobalt with transplant irrigated with saline water to overcome

Effects of cobalt nanoparticles on artemisinin production and gene expression in Artemisia annua ... produced by plants exposed to different elicitors and/ or signal molecules (Zhao et al., 2005). Artemisinin, as ... nano cobalt on the expression level of involved genes and

Cardiovascular effects. Cardiovascular effects caused by Cobalt toxicity have been reported in many studies [21-26]. Cobalt Sulfate was used in Quebec,Canada as a stabilizer in beer [21-24] with the average intake of 0.04 mg Co/kg/day to 0.14 mg Co/kg/day [25,26] for a period of years. It was known as beer-drinkers cardiomyopathy and ...

Effect of Cobalt in Plants on Animals Cobalt uptake by plants allows its access to animals. Kosla demonstrated the effect of irrigation of meadows with the water of the river Ner in Poland on the levels of iron, manganese, and cobalt in the soil and vegetation. Experiments were also carried out on young bulls (Bos taurus L.) fed with the hay grown on these meadows.

When plants grow on contaminated soils they will accumulate very small particles of cobalt, especially in the parts of the plant we eat, such as fruits and seeds. Soils near mining and melting facilities may contain very high amounts of cobalt, so that the uptake by humans through eating plants can cause health effects.

A field experiment was conducted to evaluate the effect of nitrogen source and cobalt level on growth, yield and other properties quality of soybean plants (Glycine max L. Merr). This experiment was carried out under drip irrigation system at the Research and Production Station, National Research Centre at El-Nobaria location, Egypt. Nitrogen sources were ammonium …

Cobalt, a transition element, is an essential component of several enzymes and co-enzymes. It has been shown to affect growth and metabolism of plants, in different degrees, depending on the concentration and status of cobalt in rhizosphere and soil. Cobalt interacts with other elements to form complexes. The cytotoxic and phytotoxic

Although most of the toxicological effects of cobalt are attributed to the cobalt ion, direct toxic effects of cobalt particles also contrib-ute, as evidenced by the greater toxicity of cobalt metal than of cobalt sulfate in National Toxicology Program (NTP) rodent bioassays (NTP 1998, 2014, Behl et al. 2015). Differences in the relative ...

Plant stress was indicated by a significant decrease in photosynthetic pigments. , APX, and GPX antioxidant enzymatic activity suggested the generation of reactive oxygen species and oxidative damage induced by cobalt ferrite NP. More studies are thus necessary to determine whether the benefits of using these NPs outweigh the risks.

The effect of different concentrations of cobalt added to two soil types, a sandy and a sandy loam soil, was studied on growth performance and tissue cobalt concentration of wheat plants. DTPA‐extractable cobalt was significantly higher in the sandy soil than in the sandy loam soil.

Increasing cobalt in plant media more than 20.0 ppm decreased this promotive effect. Moreover, increasing cobalt concentration in saline plant media resulted in a …

plants [7]. Cobalt is probably beneficial for plants meaning that the adequate supply might be necessary to maintain a high production [8]. In this research we have investigated to the effect of different concentrations of Nickel and cobalt on maize seeds germination. 2. Material and Method