Effect of Biochar and Compost Amendments on Soil Biochemical Properties and Dry Weight of Canola Plant Grown in Soil Contaminated with Heavy Metals

Mahmoud, Esawy; Mahmoud, I.Y.; Ali, Nehal; Ali, Hanan

doi:10.1080/00103624.2020.1763395

Cited by 22 publications

(12 citation statements)

References 41 publications

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“…Biochar and compost have great effects on soil biological and physiochemical characteristics 12 , 31 , 32 . Mahmoud et al 14 studied the effect of compost and biochar on the quality of metal polluted soil and they found that the soil microbial biomass carbon increased as results of compost and biochar together than the single application of each amendment. The combined addition of compost and biochar is more effective in increasing soil productivity and soil quality 14 .…”

Section: Discussionmentioning

confidence: 99%

“…Mahmoud et al 14 studied the effect of compost and biochar on the quality of metal polluted soil and they found that the soil microbial biomass carbon increased as results of compost and biochar together than the single application of each amendment. The combined addition of compost and biochar is more effective in increasing soil productivity and soil quality 14 . The soil that was amended with compost and biochar exhibited high CEC and SOC than the control soil.…”

Section: Discussionmentioning

confidence: 99%

“…Improvement of soil CEC and SOC may be due to the functional groups (e.g. hydroxyl and carboxylate) in compost and biochar 14 , 33 , 34 or due to the release of low-molecular weights of organic substances as results of mineralization of the added organic amendments 14 , 35 .…”

Section: Discussionmentioning

confidence: 99%

“…The activity of soil microbes can be evaluated through the measuring of soil microbial biomass carbon and nitrogen. The activity of soil microbes is an indicator for the decomposition of any added organic residues to soil and the rates of nutrients release 14 , 42 . The mixture of compost and biochar gave the highest value of MBC and MBN in this study as well as the activity of dehydrogenase and phosphatase enzymes.…”

Section: Discussionmentioning

confidence: 99%

“…Biochar and compost are commonly as organic amendments that can be used in this regard 10 . Organic amendments can increase the soil quality through increasing the soil nutrients availability, microbes and enzymes activity, and physiochemical properties 8 , 11 – 14 . Increasing the soil quality improves the plant growth and may increase its salt tolerance 15 – 17 .…”

Section: Introductionmentioning

confidence: 99%

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Biochar and compost enhance soil quality and growth of roselle (Hibiscus sabdariffa L.) under saline conditions

Liu

Ding

Ali

et al. 2021

Sci Rep

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Soil amendments may increase the slate tolerance of plants consequently; it may increase the opportunity of using saline water in agricultural production. In the present pot trial, the effects of biochar (BIC) and compost (COM) on roselle (Hibiscus sabdariffa L.) irrigated with saline water (EC = 7.50 dS m−1) was studied. Roselle plants were amended with biochar (BIC1 and BIC2) or compost (COM1 and COM2) at rates of 1 and 2% (w/w), as well as by a mixture of the two amendments (BIC1+). The experiment included a control soil without any amendments. Biochar and compost significantly enhanced the soil quality and nutrients availability under saline irrigation. Compost and biochar improved the degree of soil aggregation, total soil porosity and soil microbial biomass. BIC1 + COM1 increased the soil microbial biomass carbon and nitrogen over the individual application of each amendments and control soil. BIC1 + COM1 increased the activity of dehydrogenase and phosphatase enzymes. Growth of roselle plants including: plant height, shoot fresh and dry weight, and chlorophyll were significantly responded to the added amendments. The maximum sepal’s yield was achieved from the combined application of compost and biochar. All the investigated treatments caused remarkable increases in the total flavonol and anthocyanin. BIC1 + COM1 increased the total anthocyanin and flavonol by 29 and 17% above the control. Despite the notable improvement in soil and roselle quality as a result of the single addition of compost or biochar, there is a clear superiority due to mixing the two amendments. It can be concluded that mixing of biochar and compost is recommended for roselle plants irrigated with saline water.

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