Metal Hydroxides

Fatima, Rida; Naseer, Sania; Gilani, Muhammad Rehan Hasan Shah; Aamir, Muhammad; Akhtar, Javeed

doi:10.1002/9781394167104.ch3

Cited by 2 publications

(2 citation statements)

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“…In addition, the lime mostly serves as a cradle for Ca and Mg; it lessens the toxicity of H + , Al 3+ , and Mn 2+ ions and helps to maintain soil pH and CEC levels in acidic soils [79,84]. Ten, the hydroxyl ions produced by the hydrolytic reaction react with the H and Al ions to produce water and insoluble aluminum hydroxide (Al(OH) 3 ), respectively [85]. Tis mechanism may be brought on by microbial decarboxylation of the calcium-organic matter complex, which releases the calcium ion and causes it to be hydrolyzed later.…”

Section: Sourcementioning

confidence: 99%

“…According to Manso et al [91], lime augmentation of the Ca 2+ and Mg 2+ dissociated in soils to replace H and Al ions from the soil solution and soil exchange complex. Contrarily, oxidation following weathering leads to the production of carboxylic groups on the margins of the aromatic carbon, which increases CEC [85]. Te existence of pHdependent negative charges, which might rise with rising soil pH due to added lime, may be responsible for the link between CEC and soil pH level.…”

Section: Soil Cation Exchange Capacity (Cec) Exchangeablementioning

confidence: 99%

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Examining the Effect of Combined Biochar and Lime Rates on Selected Soil Physicochemical Properties of Acid Soils in Gimbi District, Western Ethiopia

Abeba Kenea,

Abera Goshu,

Chimdessa

2024

Applied and Environmental Soil Science

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The physicochemical properties of Western Ethiopian soils were negatively threatened with continuous cultivation crop lands. Soil amendments with biochar and lime facilitate and improve soil physicochemical properties directly and indirectly and enhance crop productivity. A field experiment was conducted in Gimbi District, Western Ethiopia, to examine the effects of combined coffee husk biochar (CHB) and soil test value-based lime (STV) rate application on physicochemical properties of acid soils. The trial included eight treatments, including control, 100% STV, 10 ton of CHB, and CHB + STV rates at 10 ton + 75%, 10 ton + 50%, 7.5 ton + 75%, 7.5 ton + 50%, and 5 ton + 75% ha−1on two farm fields. The fields were laid out in RCBD with three replications. The treatments had substantial effects on P<0.05) on the soil’s physicochemical characteristics. The application of biochar and lime in Farms-1 and 2 reduced soil BD from 1.21 and 1.41 g·cm−3 to 1.15 and 1.12 to 0.90 and 0.97 g·cm−3, respectively. The soil pH level was increased from 5.10 to a range of 5.58 to 6.11 in Farm-1, and in Farm-2, from 4.64 to a range of 4.64 to 6.22 levels. The application of 10 ton of CHB + 75% of STV in Farms-1 and 2 resulted in the highest SOC of 7.44% and 7.68%, respectively. The application of 10 ton of CHB + 75% of STV in Farms-1 and 2 resulted in 4.86 mg·kg−1 and 6.96 mg·kg−1 available P, respectively. Available P was positively correlated with pH (0.62), SOC (0.63), and CEC (0.66). Exchangeable acidity was decreased from 4.64 cmol(+)kg−1 to a range from 3.19 to 0.98 cmol(+)kg−1 in Farm-1 and from 5.00 cmol(+)kg−1 to a range from 3.38 to 1.10 cmol(+)kg−1 in Farm-2. Therefore, amending the strongly acidic to very strongly acidic soil with a combined CHB (7.5 to 10 ton ha−1) and STV (50 to 75% ha−1) rates had improved the soil physicochemical properties of agricultural lands. To make a firm conclusion, research on soil analysis after crop harvest and economic benefit is required.

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Section: Sourcementioning

confidence: 99%

Section: Soil Cation Exchange Capacity (Cec) Exchangeablementioning

confidence: 99%