Steel slag and phosphate nutrition of corn inoculated with arbuscular mycorrhizal fungi

Nunes, Anita Bueno de Camargo; Júnior, Orivaldo José Saggin; Silva, Eliane Maria Ribeiro da; Pinto, Flávio Araújo; Santos, Jessé Valentim dos

doi:10.1590/s1678-3921.pab2019.v54.00096

Cited by 5 publications

(4 citation statements)

References 27 publications

(32 reference statements)

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“…Both correctives induced an increase in the soil Ca and Mg contents as the rates were increased, which was also observed by Nunes et al (2019). Between the correctives, limestone provided higher Mg levels in both soil layers, corroborating with Caetano et al (2016), despite the similar amounts of this nutrient in their composition.…”

Section: Soil Chemical Characteristicssupporting

confidence: 68%

Soil correction for planting bermudagrass using steel slag or limestone

et al. 2020

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Limestone is the most commonly used acidity-correction agent in tropical soils. However, steel slag can be an alternative for turfgrass production areas because it contains silicon, which can increase turfgrass tolerance to biotic and/or abiotic stresses. This study was developed to evaluate the effect of the application of steel slag, as compared with limestone, on a bermudagrass sod production system. The experiment was carried out in Botucatu-SP, Brazil, in a randomized block design arranged in a factorial scheme 2 × 5 with 4 replications. Treatments consisted of two correctives (steel slag and limestone) and their rates, which were calculated to raise the soil base saturation to 12% (current), 30%, 50%, 70% and 90%. The application of lime and steel slag rates had positive effects on soil chemical attributes related to acidity correction, such as pH, Ca, Mg, H + Al, Al, CEC, SB, and base saturation (%). The slag provided higher levels of P, Ca, and Si, whereas limestone increased the Mg soil content. Steel slag provided a higher ground cover rate for bermudagrass than limestone at 114 and 161 days after transplanting (DAT), with maximum cover rate achieved with 60% base saturation at 161 DAT. The turfgrasses treated with slag showed a higher amount of roots, rhizomes, and stolons when compared with those treated with limestone. It is suggested the use of steel slag and, in calculating the need for corrective, 90% soil base saturation.

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Section: Soil Chemical Characteristicssupporting

confidence: 68%

Soil correction for planting bermudagrass using steel slag or limestone

et al. 2020

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“…This author also found similar efficiency between steel slag and dolomitic limestone in correcting the acidity of the soil. Also, Nunes et al (2019) found the same efficiency between steel slag and dolomitic limestone.…”

Section: Resultsmentioning

confidence: 65%

Reactivity of two acidity correctives in a medium texture soil

Oliveira¹,

Bhatt²,

Nikpay³

et al. 2023

Rev. Car. Cien. Soc.

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For crops to have good productivity, it is necessary to adopt agricultural practices that ensure an adequate supply of water and nutrients, and neutralize toxic elements in the soil, especially exchangeable aluminum, both in the arable layer and in the subsurface. One of these agricultural practices usually employed in both small and medium and large rural properties is the correction of soil acidity, which aims, in addition to neutralizing exchangeable aluminum, to provide calcium and magnesium for plants. Several materials have been used to correct soil acidity, with carbonates, oxides, hydroxides or silicates as neutralizing components. In the present work, the reactivity of two acidity correctives was evaluated in a soil of medium texture, with high aluminum saturation: 72.96%. The correctives used were a steel slag (calcium silicate), and a dolomitic limestone, applied in doses equivalent to one, one and a half, two, and two and a half times the analytically predicted amount, to raise the base saturation to 60%, using calcium acetate with H+ + Al3+ extractor. The study also included a control treatment, which did not receive acidity correction. The method used to evaluate the reactivity of the two correctives was soil incubation. The block design was used, with six repetitions per concealer dose. The experimental units were plastic bags with 3.0 kg of soil. After mixing the correctives with the soil, in the doses corresponding to each treatment, they were transferred to plastic bags and incubated at 70% of the maximum water retention capacity for ninety days. After the incubation period, the soil was analyzed for pH in CaCl2, pH in H2O, exchangeable aluminum (Al+3), and base saturation (V %). Steel slag and dolomitic limestone had the same efficiency to neutralize aluminum and increase base saturation. The pH in CaCl2 and pH in H2O were highly correlated, with the average pH in H2O being 0.50 units greater than the pH in CaCl2. The equation to relate pH in CaCl2 to pH in H2O was Y= 1.0273 x + 0.4716, with R2 = 0.9730. Complete neutralization of Al+3 occurred when the soil pH was raised to 5.03 (pH in CaCl2) or pH 5.50 (pH in H2O). The extraction of H+ + Al3+ with calcium acetate resulted in an underestimation of the cation exchange capacity at pH 7.0 (CTC T), and consequently of the corrective dose to be applied. On average, there was a need to double the amount of concealer predicted analytically to reach the desired base saturation. The equation to relate base saturation with corrective doses, in CaCO3 equivalents, was Y= 9.1476x + 3.8439, with R2 of 0.9449.

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“…This result corroborates those of Sala et al (2007), who studied the interaction between AMFs and diazotrophic bacteria in wheat and determined that the isolated inoculation of Glomus Etunicatun and Acaulospora colombiana did not differ from the treatments without inoculation for the root dry mass of wheat. However, Rhizophagus Clarus and Gigaspora Margarita inoculation caused an increase in dry mass and root volume in maize (Zea mays) when compared to the control without inoculation (Nunes et al, 2019). This demonstrates the need to select AMF species based on these morphological traits.…”

Section: Figurementioning

confidence: 99%

“…The symbiosis established between arbuscular mycorrhizae and plant species is significant because AMF promote root elongation through their extraradicular hyphae, increasing the contact area in the soil, which can increase the specific surface area up to 40-fold (Giovannetti et al, 2001). As such, several benefits related to the greater specific surface area of plants through symbiosis with AMF are cited in the literature, including increased water and nutrient absorption with low soil mobility (Silveira et al, 2002), as well as resistance to biotic and abiotic stresses (Nunes et al, 2019). The average root diameter was higher for A. Colombiana, but the other mycorrhizal inocula and the control did not differ (Figure 3 F).…”

Section: Figurementioning

confidence: 99%

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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Steel slag and phosphate nutrition of corn inoculated with arbuscular mycorrhizal fungi

Cited by 5 publications

References 27 publications

Soil correction for planting bermudagrass using steel slag or limestone

Soil correction for planting bermudagrass using steel slag or limestone

Reactivity of two acidity correctives in a medium texture soil

Arbuscular mycorrhizal fungi in wheat grown in copper contaminated soil

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