Quantificação De Óxidos De Ferro Em Solos Do Cerrado Do Estado Do Amapá

Sousa, Evelly Amanda Bernardo de; Reis, Iolanda Maria Soares; Júnior, Nagib Jorge Melém; Oliveira, Ivanildo Amorim de; Silva, Laércio Santos; Freitas, Ludmila de

doi:10.22533/at.ed.1001814125

Cited by 5 publications

(8 citation statements)

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“…Commonly, the result of the chemical analysis of the 20 -40 cm layer of the soil must be observed for decision-making as to the need or not to apply gypsum, for most crops. The main indicators of the need for gypsum application are the levels of calcium (< 0.4 cmol c dm -3 ), exchangeable aluminum (> 0.5 cmol c dm -3 ), and aluminum saturation (> 20%) (Caires & Guimarães, 2018;Lopes & Guimarães, 1999;Raij et al, 2022;Sousa et al, 2005). To explain gypsum, the most used parameters for recommending agricultural gypsum doses are the need for liming, clay percentage, and base saturation (Lopes & Guimarães, 1999;Raij et al, 2022;Ribeiro et al, 1999;Sousa et al, 2005;Vitti et al, 2008).…”

Section: _______________________________________________mentioning

confidence: 99%

Gypsum recommendations for a typical Dystrophic Red Argisol cropped with Phaseolus vulgaris

Silva,

Nolla,

Bordin

et al. 2024

Rev. Ceres

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Paraná leads the Brazilian production of beans so that the cultivation system can restrain the root development of the plants. Limestone and agricultural gypsum can be alternatives to stimulate the development of roots, and it is necessary to establish criteria for their use. The objective of this work was to evaluate the development of bean plants subjected to liming and gypsum doses in a typical Dystrophic Red Argisol. The experiment was carried out in Umuarama, state of Paraná in PVC tubes (80 x 15 cm), growing Phaseolus vulgaris cultivar Pérola for 90 days. Treatments consisted of gypsum doses (0, 420, 670, 950, 1140, 1430, 3000, and 5320 kg ha -1 ) combined or not with lime application, in a factorial design (8 x 2) with four replications. At the end of the cycle, the aerial part of the plants and soil samples were collected for analysis. Gypsum doses benefited bean development, especially when associated with liming, which raised pH, Ca +2 , and Mg +2 and reduced Al +3 in the soil. The doses of maximum technical efficiency of gypsum were 3291 and 2991 kg ha -1 for the treatments with and without liming, respectively, also increasing the Ca +2 and available P concentration in the soil.

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Section: _______________________________________________mentioning

confidence: 99%

Gypsum recommendations for a typical Dystrophic Red Argisol cropped with Phaseolus vulgaris

Silva,

Nolla,

Bordin

et al. 2024

Rev. Ceres

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“…The interaction between limestone and gypsum in the soil shows a positive effect on root growth and agricultural production. For example, the application of gypsum and limestone in the soil shows positive effects on root growth because it improves the relative root distribution in depth [53], in addition to increasing the production of soybeans by 11.4% in conditions of water deficit [54]. Under conditions of water deficit, gypsum is shown to be efficient in increasing grain production in grasses such as maize and wheat [55].…”

Section: Liming and Gypsum: Chemical Soil Management Aimed At Mitigat...mentioning

confidence: 99%

Toxic Aluminum and Water Deficit Interaction in Plants: Physiological Aspects and Chemical Soil Management to Improve Root Environment in the Context of Global Climate Change

Cruz¹

2023

Abiotic Stress in Plants - Adaptations to Climate Change

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Human activity has contributed to the intensification of climate change. These climate changes cause a reduction in plant growth and agricultural production due to increasingly frequent periods of water restriction. This effect can be more severe in tropical regions where the acid pH of the soil and the toxic levels of aluminum have a natural origin due to the weathering of the soils. In this context, water deficiency and aluminum toxicity alone or together promote biochemical and physiological changes in plants. This suggests the need to adopt soil management strategies that minimize the joint impact of these two abiotic stresses. Thus, liming and gypsum contribute to improving the edaphic environment, because they reduce the availability of toxic aluminum but increase the soil pH. In this chapter, we propose a systematic review of the isolated and combined effects of water deficiency and aluminum toxicity in plants based on physiological, biochemical, and nutritional variables. Thus, the understanding of these responses will improve the understanding of the mechanisms of tolerance to the two abiotic stresses, indicating the need to use soil correctives to minimize the effects of water deficiency and toxic aluminum in the soil on plant growth.

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“…Brazilian literature is abundant on phosphogypsum recommendations [34][35][36][37][38][39][40][41]. Approaches have been rather variable and nonspecific.…”

Section: Thementioning

confidence: 99%

“…, ensuring crops response to phosphogypsum [36]. Use of phosphogypsum under this condition improves root development and plant growth [43].…”

Section: Thementioning

confidence: 99%

Research Perspectives on the Use of Phosphogypsum in the Brazilian Cerrado

Marchi¹,

Spehar²,

Sousa-Silva³

et al. 2020

J. Agric. Food Dev.

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The theoretical aspects, benefits, research contributions, technical recommendations, side effects, limitations, environmental concerns as well as the legislation on the application of phosphogypsum to Brazilian savanna (Cerrado) soils are discussed in this review. It is shown why it is important to apply phosphogypsum to Cerrado soils, and its effect on plant resilience to drought periods. The application of this product may become a main practice in Cerrado soils − a region in which crops as well as pastures are grown − as temperatures rise, and dry periods turn extended, due to climate change. Sulfate, as a component of phosphogypsum, does not leach to groundwater such as in temperate climate soils, turning the use of phosphogypsum environmentally friendly. The phosphogypsum produced in Brazil is a clean by-product of phosphate industry, whose rock source plays an important role providing low trace element and radionuclide contents. It is noteworthy that the Brazilian experience based on phosphogypsum application may work in many tropical soils around the globe, and many populations may be benefited from this technical knowledge.

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Quantificação De Óxidos De Ferro Em Solos Do Cerrado Do Estado Do Amapá

Cited by 5 publications

References 0 publications

Gypsum recommendations for a typical Dystrophic Red Argisol cropped with Phaseolus vulgaris

Gypsum recommendations for a typical Dystrophic Red Argisol cropped with Phaseolus vulgaris

Toxic Aluminum and Water Deficit Interaction in Plants: Physiological Aspects and Chemical Soil Management to Improve Root Environment in the Context of Global Climate Change

Research Perspectives on the Use of Phosphogypsum in the Brazilian Cerrado

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