scholarly journals The effect of homoeopathic potencies of a fungicide, Acrobat (Dimethomorph and Mancozeb), on downy mildew (Peronospora parasitica) of cabbage seedlings (Brassica oleracea)

2000 ◽  
Author(s):  
◽  
Nicole Dawson
Keyword(s):  
Brassica Oleracea ◽  
Downy Mildew ◽  
Biological Effects ◽  
Growth Stimulation ◽  
Peronospora Parasitica ◽  
Inhibition Of Growth ◽  
Low Concentrations ◽  
High Concentrations

The purpose of this study was to expand on previous research in Homoeopathy, using the cabbage (Brassica oleracae) and crucifer downy mildew (Peronospora parasitica) disease system. More specifically, this study aimed to evaluate the biological effects of homoeopathic treatments made from a fungicide, Acrobat, on the development of downy mildew on cabbage seedlings. The object was to demonstrate the Arndt-Schulz Law or Hormesis (inhibition of growth at high concentrations and growth stimulation at low concentrations) using homoeopathic treatments prepared as per homoeopathic methodology, by dilution and succussion.

scholarly journals The biological effects of strontium (88Sr) on Chinese cabbage

2020 ◽  
Vol 66 (No. 4) ◽  
pp. 149-154
Author(s):  
Weirong Zhang ◽  
Zheng Kang ◽  
Qiang Wang ◽  
Nianwei Qiu ◽  
Min Chen ◽  
...  
Keyword(s):  
Steady State ◽  
Brassica Rapa ◽  
Chinese Cabbage ◽  
Nutritional Value ◽  
Photosynthetic Capacity ◽  
Biological Effects ◽  
Hydroponic Culture ◽  
Growth And Yield ◽  
Low Concentrations ◽  
High Concentrations

Steady-state strontium (<sup>88</sup>Sr) plays an important role in human health. Applying a proper amount of <sup>88</sup>Sr to vegetables can improve their nutritional value. To investigate the biological effects of <sup>88</sup>S on vegetables, three-leaf Chinese cabbage (Brassica rapa L.) seedlings were provided with a nutrient solution containing 0, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 and 10 mmol/L SrCl<sub>2</sub> by the hydroponic culture. The results showed that SrCl<sub>2</sub> at low concentrations (0.2 and 0.5 mmol/L) promoted the growth of Chinese cabbage, while SrCl<sub>2</sub> at high concentrations (2.0–10.0 mmol/L)significantly inhibited the growth. SrCl<sub>2</sub> at high concentrations did not decrease the chlorophyll content and protein content in Chinese cabbage leaves, nor did it affect the photosynthetic capacity of leaves. The main reason that SrCl<sub>2</sub> at high concentrations inhibited the growth of Chinese cabbage was that strontium affected the absorption of calcium. SrCl<sub>2</sub> at the concentration of 0.2 and 0.5 mmol/L could significantly increase leaf protein, chlorophyll, and water content and promote the growth of Chinese cabbage. The supplement of SrCl<sub>2</sub> at these two concentrations may be beneficial to the growth and yield of Chinese cabbage.

scholarly journals Evaluation of cadmium and arsenic effects on wild and cultivated cardoon genotypes selected for metal phytoremediation and bioenergy purposes

2021 ◽  
Author(s):  
Chiara Leonardi ◽  
Valeria Toscano ◽  
Claudia Genovese ◽  
Julian Frederick Willem Mosselmans ◽  
Bryne Tendelo Ngwenya ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Growth Stimulation ◽  
Industrial Area ◽  
Leaf Biomass ◽  
Cynara Cardunculus ◽  
Marginal Lands ◽  
Cd Contamination ◽  
Low Concentrations ◽  
High Production ◽  
High Concentrations

AbstractCynara cardunculus L. is a multipurpose crop, characterized by high production of biomass suitable for energy purposes and green chemistry. Taking advantage of its already demonstrated ability to grow in polluted environments that characterize many world marginal lands, the aim of this work was to investigate the response of different cardoon genotypes to exposure to cadmium (Cd) and arsenic (As) pollution, in order to use this crop for rehabilitation of contaminated sites and its biomass for energy production. In this study, seeds of two wild cardoon accessions harvested in rural and industrial Sicilian areas and of a selected line of domestic cardoon were used, and the grown plants were spiked with As and Cd, alone or in combination, at two different concentrations (500 and 2000 μM) and monitored for 45 days. The growth parameters showed that all the plants survived until the end of experiment, with growth stimulation in the presence of low concentrations of As and Cd, relative to metal-free controls. Biomass production was mostly allocated in the roots in As treatment and in the shoots in Cd treatment. Cd EXAFS analysis showed that tolerance to high concentrations of both metals was likely linked to complexation of Cd with oxygen-containing ligands, possibly organic acids, in both root and leaf biomass with differences in behaviour among genotypes. Under As+Cd contamination, the ability of the plants to translocate As to aboveground system increased also showing that, for both metal(loid)s, there were significant differences between genotypes studied. Moreover, the results showed that Cynara cardunculus var. sylvestris collected in an industrial area is the genotype that, among those studied, had the best phytoextraction capability for each metal(loid).

Benzothiadiazole (BTH) induces resistance in cauliflower (Brassica oleracea var botrytis) to downy mildew of crucifers caused by Peronospora parasitica

1999 ◽  
Vol 18 (6) ◽  
pp. 397-405 ◽  
Author(s):  
Jean-François Godard ◽  
Smaı̈l Ziadi ◽  
Claudie Monot ◽  
Daniel Le Corre ◽  
Drissa Silué
Keyword(s):  
Brassica Oleracea ◽  
Downy Mildew ◽  
Peronospora Parasitica

Bioaccummulation of the endocrine disrupting compound, dioctyl phthalate, in sheep grazing pasture treated with sewage sludge or inorganic fertiliser

2001 ◽  
Vol 2001 ◽  
pp. 67-67
Author(s):  
S.M. Rhind ◽  
C.E. Kyle ◽  
G. Telfer ◽  
G. Martin ◽  
A. Smith
Keyword(s):  
Sewage Sludge ◽  
Biological Effects ◽  
Arable Land ◽  
Endocrine Disrupting Compounds ◽  
Dioctyl Phthalate ◽  
Animal Tissues ◽  
Endocrine Disrupting Compound ◽  
Low Concentrations ◽  
Endocrine Disrupting ◽  
High Concentrations

Endocrine disrupting compounds (EDC) are chemically diverse and ubiquitous compounds which are released into the environment as a result of industrial, domestic and agricultural processes. They are generally readily absorbed from ingested food and water, can accumulate in animal tissue and can have adverse effects on reproductive and immune systems at very low concentrations. They are present in high concentrations in sewage sludge which is likely to be used increasingly as a fertiliser on pasture and arable land and so there is potential for bioaccumulation in animal tissues and associated, adverse biological effects. The aim of the study was to determine the concentrations of one EDC, dioctyl phthalate (DOP), in the livers of ewes and lambs maintained on control and sludge-treated pastures.

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