BIOCHAR AS A POTENTIAL SOIL CONDITIONER IN SALINE PRONE COASTAL AREA OF BANGLADESH

Monowara  Khatun; Mahmood  Hossain; Jagadish Chandra  Joardar

doi:10.53808/KUS.SI.2023.ISFMRT.1099-ls

BIOCHAR AS A POTENTIAL SOIL CONDITIONER IN SALINE PRONE COASTAL AREA OF BANGLADESH

Authors

Monowara Khatun Soil, Water and Environment Discipline, Khulna University, Khulna-9208, Bangladesh
Mahmood Hossain Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh
Jagadish Chandra Joardar Soil, Water and Environment Discipline, Khulna University, Khulna-9208, Bangladesh.

DOI:

https://doi.org/10.53808/KUS.SI.2023.ISFMRT.1099-ls

Keywords:

Char, Salinity stress, Crop growth, Soil amendment, Salt-affected soils

Abstract

In the coastal areas of Bangladesh, salinity restricts normal crop production and increases with the desiccation of the soil. Recently, biochar has received great attention as a soil amendment to mitigate the detrimental effects of salinity stress. In this respect, a field experiment was conducted to examine the effects of biochars on soil properties and growth of okra (Abelmoschus esculentus L.) and to identify a suitable biochar amendment for salt-affected soils in coastal areas of Bangladesh. The experiment was conducted in a randomized complete block design (RCBD) with five replications. Three types of biochar (rice straw biochar, sawdust biochar and water hyacinth biochar) were applied @ 10 t ha^-1 in a silt loam soil along with the control. Results showed that biochar application to the soil enhanced plant height, leaf number, leaf area, shoot fresh weight, shoot dry weight and yield of okra as well as improving the soil quality e.g. field capacity (FC), CEC, OC, total N, available P, S, K, and Ca. The application of water hyacinth biochar improved almost all of the growth and yield attributes of okra along with most of the soil properties than that of others. The results suggest that water hyacinth biochar might be recommended as a suitable soil amendment for better crop growth and soil quality. Moreover, water hyacinth biochar had significantly (P<0.001) higher surface area (205.40 m²g^-1); consequently, higher capacity in salt and water adsorption which might prevent soil desiccation. Side by side, it significantly (P<0.001) increased the soil Ca content which might replace Na⁺ in the root rhizosphere minimizing the Na⁺ uptake by plants. Taken together, water hyacinth biochar could also be the best choice of organic amendments to reduce the suppressing effect of salinity stress in coastal areas of Bangladesh.

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Published

18-02-2024

How to Cite

[1]

M. . Khatun, M. . Hossain, and J. C. Joardar, “BIOCHAR AS A POTENTIAL SOIL CONDITIONER IN SALINE PRONE COASTAL AREA OF BANGLADESH”, Khulna Univ. Stud., pp. 1–10, Feb. 2024.