Influence of Sugarcane Bagasse Biochar on Nutrient Availability and Biological Properties of a Calcareous Soil
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Biochar application can affect nutrient availability and biological properties of soil. The objective of this study was to evaluate the effect of biochar derived sugarcane bagasse at different pyrolysis temperature on nutrient availability and biological properties of a calcareous soil. Therefore, biochars were produced at 200, 350 and 500˚C and mixed at 1 and 2% (w/w) with the soil. The soil samples were incubated in ambient temperature (25 ± 2°C), for 90 days. At the end of experiment, nutrient availability and some of chemical and biological properties of soil were measured. The experiment was carried out as a factorial experiment based on a randomized complete design with two factors including biochar type and application rate in three replications. The results indicated application of biochars increased soil cation exchangeable capacity (1.9-12.9%), organic carbon (54-192%), available P (2.0-76.0%), K (5.2-18.1%) and Mn (12.6-17.5%). Application of B500 decreased the concentration of available Fe, Zn and Cu but application of B200 significantly increased of these nutrients. In addition, application of biochars significantly increased microbial respiration (20.0-108%), substrate-induced respiration (16.5-142%), microbial biomass carbon (8.2-124%) and activities of dehydrogenase (19.3-129%) and catalase (34.4-178%). The greatest increases in available concentration of micronutrients and microbial properties were observed in B200 treatment at 2% application rate. In general, the results indicated that sugarcane bagasse derived biochar produced at low temperature (200 and 350˚C) especially 200 ˚C can be suitable organic amendment for improving soil organic matter, nutrient availability and biological properties of calcareous soils in arid and semi-arid regions.
Language:
Persian
Published:
Applied Soil Reseach, Volume:8 Issue: 1, 2020
Pages:
1 to 17
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