Plant Tolerance to Acid Soil Constraints

2000 ◽  
Author(s):  
R Duncan
Keyword(s):  
Acid Soil ◽  
Plant Tolerance ◽  
Soil Constraints

scholarly journals Greenhouse assessment of citric acid-assisted phytoremediation of cadmium by willows (Salix spp.) - effect on photosynthetic performances and metal tolerance

2019 ◽  
Vol 25 (2) ◽  
pp. 203-212
Author(s):  
Danjela Arsenov ◽  
Nataša Nikolić ◽  
Milan Borišev ◽  
Milan Župunski ◽  
Saša Orlović ◽  
...  
Keyword(s):  
Citric Acid ◽  
Metal Tolerance ◽  
Acid Soil ◽  
Chelating Agent ◽  
Culture Method ◽  
Significant Negative Correlation ◽  
Limiting Factor ◽  
Plant Tolerance ◽  
Soil Culture ◽  
Tolerance Accumulation

The aim of this study was to define effects of cadmium (Cd) applied alone and in combination with citric acid, on the plant tolerance, accumulation, translocation and photosynthesis in willows (Salix viminalis, S. matsudana and S. alba). Low metal bioavailability in soil is often the limiting factor for phytoextraction, thus citric acid was used as a chelating agent aiming to improve metal solubility and therefore accelerates phytoextraction. Willows were grown by soil culture method in semi-controlled conditions (greenhouse) with two different Cd concentrations (3 and 6 ppm), applied separately and in combination with citric acid (20 mM/kg of dry soil), followed by control plants. The reduction of plant growth, biomass, photosynthesis parameters, chlorophyll and carotenoids were induced by Cd supplied. The addition of citric acid showed beneficial effects on different morpho-physiological levels through alleviate stress conditions as well as enhancing overall phytoextraction. Citric acid (CA) has increased transport of the accumulated Cd from the roots to aerial part in S.viminalis and S.alba in comparison with same treatments without CA, as well as tolerance of analyzed clones. Significant depressive effect on photosynthetic CO2 assimilation was evident in plants grown in soil with Cd applied. A significant negative correlation between biomass production, leaf area, and photosynthesis due to the presence of Cd in plant tissue was observed in S. viminalis. Bioaccumulation factor among selected willow clones was higher than 1, reliably suggesting good potential of selected genotypes for phytoextraction. Key words: willows, cadmium, citric acid, soil phytoextraction, photosynthesis, accumulation, translocation, tolerance

Effect of Homeopathic Preparations on Lettuce, Parasitized or Not by Meloidogyne enterolobii

Homeopathy ◽  
2020 ◽  
Author(s):  
Thais Moraes Ferreira ◽  
Mariana Zandomênico Mangeiro ◽  
Alexandre Macedo Almeida ◽  
Ricardo Moreira Souza
Keyword(s):  
Plant Pathogens ◽  
Nematode Control ◽  
Plant Tolerance ◽  
Nematode Reproduction ◽  
Meloidogyne Enterolobii ◽  
Negative Effect ◽  
Meloidogyne Spp ◽  
Constant Dose ◽  
Lettuce Growth ◽  
Complementary Strategy

Abstract Background There are relatively few scientific works on the use of homeopathy to manage plant pathogens, particularly nematodes. A handful of studies focused on Meloidogyne spp. parasitizing vegetables have brought contradictory results on nematode control and enhancement of plant tolerance to parasitism. Objective Our goal was to assess the effect of Cina—a well-known anti-nematode ingredient—on Meloidogyne enterolobii parasitizing lettuce. Methods Cina was applied daily on nematode-inoculated plants, from the seedling stage until harvest. We tested an evenly spaced range of Hahnemannian concentrations (c), which were applied though irrigation with a constant dose of the ingredient. Several absolute and relative controls were employed to allow the assessment of the effect of Cina on nematode reproduction and lettuce growth. Results Cina affected growth of non-parasitized plants, both positively and negatively; this effect was modulated by the c applied and the thermal stress suffered by the plants in one of the assays. The effect of Cina on the growth of nematode-parasitized plants was neutral or negative. Cina reduced nematode reproduction by 25–36%. Conclusion Based on the moderate negative effect of Cina on M. enterolobii reproduction, it seems this ingredient may be useful as a complementary strategy for Meloidogyne control. But Cina did not enhance the tolerance of lettuce to Meloidogyne spp.

Toxicity, Uptake, and Distribution of Simazine in Canna hybrida `King Humbert': Implications for Phytoremediation

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 484e-485
Author(s):  
Patrick C. Wilson ◽  
Ted Whitwell ◽  
Steven J. Klaine
Keyword(s):  
Mass Production ◽  
Photosynthetic Efficiency ◽  
Liquid Scintillation ◽  
Herbicidal Activity ◽  
Fresh Mass ◽  
Contaminated Water ◽  
Golf Courses ◽  
Plant Tolerance ◽  
Nutrient Media ◽  
Potential Use

This research focuses on the potential use of Canna hybrida `King Humbert' for removing simazine from contaminated water generated at golf courses and ornamental nurseries. Because of simazine's herbicidal activity, it is important for levels in solution not to exceed plant tolerance levels. Tolerance levels for C. hybrida were determined by dosing plants for 7 d with 0, 0.01, 0.03, 0.1, 0.3, 1.0, or 3.0 mg simazine/L nutrient media. Measurements of 7-d fresh mass production and photosynthetic efficiency (Fv/Fm) were taken. Simazine uptake and distribution within the plant was determined by dosing plants with 2.03 mCi 14C-simazine (0.243 mg/L) for 1, 3, 5, or 7 d. Plant tissues were analyzed by combustion and liquid scintillation counting. Fresh mass production was reduced 66% and 78% for plants exposed to 1.0 and 3.0 mg/L, respectively. Likewise, photosynthetic efficiency was reduced to 66% and 40% of the controls at the same respective concentrations. Plant uptake of simazine accounted for 13%, 34%, 48%, and 65% of the original simazine in the dosing solution after 1-, 3-, 5-, and 7-d exposure, respectively. This simazine was distributed primarily between roots and leaves.

Responses of Sunflower Genotypes to Aluminum in Acid Soil and Nutrient Solution 1

1974 ◽  
Vol 66 (2) ◽  
pp. 293-296 ◽  
Author(s):  
C. D. Foy ◽  
R. G. Orellana ◽  
J. W. Schwartz ◽  
A. L. Fleming
Keyword(s):  
Nutrient Solution ◽  
Acid Soil

The influence of lime application to the acid soil on bioavailability of phosphorus in runoff

1996 ◽  
Vol 33 (4-5) ◽  
pp. 297-301 ◽  
Author(s):  
Vít Sova
Keyword(s):  
Acid Soil ◽  
Simulated Rainfall ◽  
Laboratory Conditions ◽  
Lime Application ◽  
Runoff Sediment

The influence of lime application to the acid soil on the mobility of phosphorus (P) in runoff was investigated by simulated rainfall in laboratory conditions. The neutralization of the acid soil by appropriate amount of lime significantly increased the portion of loosely bound phosphates in runoff sediment This phenomenon influenced bioavailability of P in runoff which increased after the lime application.

Hydrogen Commonly Applicable to Medicine to Agriculture: From Molecular Mechanisms to the Field

2020 ◽  
Vol 26 ◽  
Author(s):  
Longna Li ◽  
Wang Lou ◽  
Lingshuai Kong ◽  
Wenbiao Shen
Keyword(s):  
Molecular Mechanisms ◽  
Field Trials ◽  
Hydrogen Gas ◽  
Agricultural Products ◽  
Nitrite Accumulation ◽  
Low Carbon ◽  
Plant Tolerance ◽  
Low Carbon Economy ◽  
Biotic Stresses ◽  
Safety Issues

Abstract:: The emerging field of hydrogen biology has to date mainly been applied in medicine. However, hydrogen biology can also enable positive outcomes in agriculture. Agriculture faces significant challenges resulting from a growing population, climate change, natural disasters, environment pollution, and food safety issues. In fact, hydrogen agriculture is a practical application of hydrogen biology, which may assist in addressing many of these challenges. It has been demonstrated that hydrogen gas (H2) may enhance plant tolerance towards abiotic and biotic stresses, regulate plant growth and development, increase nutritional values, prolong the shelf life, and decrease the nitrite accumulation during the storage of vegetables, as well as increase the resilience of livestock to pathogens. Our field trials show that H2 may have a promising potential to increase yield and improve the quality of agricultural products. This review aims to elucidate mechanisms for a novel agricultural application of H2 in China. Future development of hydrogen agriculture is proposed as well. Obviously, hydrogen agriculture belongs to low carbon economy, and has great potential to provide “safe, tasty, healthy, and highyield” agricultural products so that it may improve the sustainability of agriculture.

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