Biochar optimum speed increases productivity and conserves residues of glyphosate in field soils

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Research Paper 01/09/2020
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Biochar optimum speed increases productivity and conserves residues of glyphosate in field soils

Md. Abu Sayem Jiku, Md. Arifur Rahaman, Muhiuddin Faruquee, Shata Rupa Sinha, Md. Ashraful Alam, Ashutus Singha
J. Bio. Env. Sci.17( 3), 26-35, September 2020.
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Biochar assists to reclaim the soil environment through absorbing the toxic compounds and its optimum application has a significant role to detoxify the glyphosate residues from soil that improves soil properties. Therefore, this study was carried out to detoxification of glyphosate soil residues by biochar amendments and to finding the suitable biochar application rate in crops. In this study, successfully applied of glyphosate to the upper 2-3cm of the top soil display the moderate toxicity for seedling growth but this negative effect has been mitigated by 5% biochar application. In control, leaf chlorophyll content was higher and showed better performance than biochar treatment. Among the all biochar treatments, Gly+ch10% indicates slightly higher shoot fresh biomass than all biochar treatments but no significant difference found in shoot dry weight. In root morphology, the biochar amendment and glyphosate treatment did not show significant difference in fine roots production. For instance, optimum application of biochar influences to enlarge the total root length, which has positive effect to uptake the mineral nutrient from the deeper part of soil. On the other hand, higher rate of biochar application has negative impact on shoot and root growth. These findings are suggesting that biochar amendments (5-10% v/v) can mitigate absorbs effects of herbicidal residues and there is no toxic effect of glyphosate resides. For a successful introduction of biochar application in agriculture field acts as a huge amount of carbon sink and increased crop production as well as positive effect to mitigate climate change.


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