Fitodisponibilidade de cobre e produção de matéria seca por plantas de milho em resposta à aplicação de dejetos de suínos

Seidel, Edleusa Pereira; Costa, Antônio Carlos Saraiva da; Lana, Maria do Carmo

doi:10.1590/s0100-06832009000600036

Cited by 5 publications

(3 citation statements)

References 12 publications

(12 reference statements)

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“…Cu contents in leaves were also low (3.55 to 4.58 mg kg −1 ) and showed no differences between treatments (Table 2). Maize plants were, in fact, moderately deficient in Cu, which may be justified by the low mobility of this element (Seidel et al, 2009). Similar results were reported by Merlino et al (2010) and Junio et al (2011).…”

Section: CD Cu and Cr Concentrations In Leaves Aerial Parts And Ksupporting

confidence: 84%

Cadmium, copper, and chromium levels in maize plants and soil fertilized with sewage sludge

et al. 2020

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The use of sewage sludge as fertilizer is a widespread practice. However, the presence of heavy metals and pathogens in sludge are a cause for concern. The objective of this study was to determine the levels of cadmium (Cd), copper (Cu), and chromium (Cr) in leaves, aerial parts, and kernels of maize grown in red latosol that was fertilized with sewage sludge for 15 consecutive years. Metal concentrations in soil and kernel yield were also determined. A randomized block design was used, with five replicates and four treatments: T1, mineral fertilization (control); T2, application of sewage sludge at 5 Mg ha−1; T3, application of sewage sludge at 10 Mg ha−1; and T4, application of sewage sludge at 20 Mg ha−1. All plots received potassium (K) supplementation. Fertilization with sewage sludge was as efficient as mineral fertilization. Sewage sludge had no negative effect on kernel yield. A negative correlation was observed between metal concentrations in soil and plant samples. Cd was detected at ≤0.04 mg kg−1 in kernels and Cu at ≤2.34 mg kg−1, whereas Cr was not detected in any sample. These levels are considered safe for human consumption, according to the Brazilian Health Regulatory Agency. Fertilization with sewage sludge for 15 years did not increase Cu, Cd, and Cr levels in the soil and had no negative effect on maize, which shows the potential of sewage sludge for agricultural use.

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Section: CD Cu and Cr Concentrations In Leaves Aerial Parts And Ksupporting

confidence: 84%

Cadmium, copper, and chromium levels in maize plants and soil fertilized with sewage sludge

et al. 2020

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“…Root Cu content increased linearly in all treatments, being higher for G. Margarita, with 443 mg kg -1 of Cu at 400 mg kg -1 (Figure 4 A). In maize, an increase in soil Cu content results in a higher root metal content, with 445.8 mg kg -1 at 300 mg dm -3 of copper (Seidel et al, 2009). The increase in root metal content and stress relief in mycorrhizal plants, at high concentrations of these elements was reported by Silva et al (2006).…”

Section: Figurementioning

confidence: 81%

Arbuscular mycorrhizal fungi in wheat grown in copper contaminated soil

Turchetto

Volpi

Silva

et al. 2022

Semina: Ciênc. Agrár.

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At high soil concentrations, copper (Cu) is toxic to plant development. Symbiosis carried out between microorganisms and plant species are alternatives to minimize plant toxicity in copper contaminated soil. The present study aimed to select species of arbuscular mycorrhizal fungi for the development of wheat plants in copper contaminated soil. The experimental design was completely randomized in a 4 × 6 factorial arrangement, with four sources of inocula: three species of arbuscular mycorrhizae (Acaulospora colombiana, Gigaspora Margarita and Rhizophagus clarus) and one without inoculum (control), and six doses of copper in the soil (0, 80, 160, 240, 320, and 400 mg kg-1), with seven replications. Plant height, root length, root volume, root dry mass, specific surface area, average root diameter, root, shoot and grain Cu content and mycorrhizal colonization rate were evaluated. Root dry mass and mycorrhizal colonization were negatively affected by high Cu doses in the soil. The mycorrhizal isolates Acaulospora Colombiana and Gigaspora Margarita provide greater wheat height, root length and specific surface area and lower Cu content. Mycorrhizal colonization with the fungi Acaulospora Colombiana, Gigaspora Margarita and Rhizophagus clarus results in lower copper content in wheat shoots and grains.

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“…It appears that the roots of soybean plants limit Cu translocation to the shoots (Silva, Vitti, & Trevizam, 2007). This mechanism of tolerance to excess Cu by the roots results from the immobilization of Cu in the cell wall, elimination or restriction of absorption, compartmentalization in the vacuole with soluble complexes and formation of chelates at the cell-membrane interface and phytochelatins, which chelate heavy metals in cells, preventing intracellular damage (Seidel, Costa, & Lana, 2009). According to Mantovani (2009), Cu concentrations above 20 mg kg -1 in the shoot DM are considered toxic for some legume species.…”

Section: Resultsmentioning

confidence: 99%

Development of mycorrhizal soybean grown in copper-contaminated soil

Andreola¹,

Stumm²,

Fontanive³

et al. 2021

Semina: Ciênc. Agrár.

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High concentrations of copper in the soil are toxic to the development of plants and microorganisms. The aim of this study was to select arbuscular mycorrhizal fungi efficient for the development and yield of soybeangrown in copper-contaminated soil. The experiment was laid out in a completely randomized design with a 7 × 4 factorial arrangement corresponding to seven rates of copper (0, 80, 160, 240, 320, 400, and 480 mg kg-1 of soil) and four inocula (uninoculated control and three mycorrhizal fungi, namely, Acaulospora colombiana, Dentiscutata heterogama and Rhizophagus clarus), in seven replicates. Shoot height; collar diameter; number of grains per plant; shoot and root-system dry mass; leaf area; specific root surface; copper content and accumulation in the shoots, roots, and grain; chlorophyll parameters; and mycorrhizal colonization percentage were evaluated. Inoculation with the arbuscular mycorrhizal fungi Acaulospora colombiana, Dentiscutata heterogama and Rhizophagus clarus increases the phenological and physiological parameters of soybean and its yield when grown in soil contaminated with up to 480 mg kg-1 of copper applied to the soil. The Rhizophagus clarus isolate provides greater development and yield in soybean grown in soil contaminated with up to 480 mg kg-1 of copper applied to the soil, as compared with the other isolates.

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Fitodisponibilidade de cobre e produção de matéria seca por plantas de milho em resposta à aplicação de dejetos de suínos

Cited by 5 publications

References 12 publications

Cadmium, copper, and chromium levels in maize plants and soil fertilized with sewage sludge

Cadmium, copper, and chromium levels in maize plants and soil fertilized with sewage sludge

Arbuscular mycorrhizal fungi in wheat grown in copper contaminated soil

Development of mycorrhizal soybean grown in copper-contaminated soil

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