Abstract

Soil degradation is an important threat to sustainable agriculture. In Bangladesh, brick production contributes to soil loss as the country relies on clay-rich soil for brick making. An in-depth understanding of why farmers sell soil and the corresponding impacts on agricultural productivity is critical for developing and implementing new policies for utilizing alternate materials and methods in Bangladesh and other areas that continue to rely on fired clay bricks as their primary building material. A team of anthropologists conducted 120 structured interviews and 20 in-depth interviews in two different geographical areas in Bangladesh to understand the incentives for and impacts of selling soil. The primary reason farmers sold soil was pressure from neighboring farmers who had previously sold soil. Once neighboring property owners had sold soil, then farmers felt they needed to sell their soil to level their land with the neighboring plot to avoid future production loss. Short-term monetary gain from selling soil was also a strong motivator helping farmers manage acute financial crises. In addition, farmers are frequently compelled to sell soil for brick making because of coercive practices by brick-owners and their soil brokers. In this study, farmers reported 40–80% reduction in crop production and 40–70% reduction in income due to soil removal. The loss of the soil reduces agricultural yields leading to both short- and longer-term impacts on crop production that influence the country’s food security.

Highlights

  • Bangladesh’s population growth and increasing affluence have contributed to increased construction and demand for building materials (BBS 2012)

  • Research in Tamil Nadu, India, found that following topsoil removal for brick production, soil manganese was reduced by 35% and zinc by 63%, and on average, topsoil removal resulted in a loss of about 28 kg of nitrogen, 3 kg of phosphorous and 34 kg of potash per hectare of land

  • A more comprehensive understanding of the broader impacts of reliance on clay bricks can inform considerations in Bangladesh and other countries that continue to rely on fired clay bricks as their primary building material. To address this gap in knowledge, this study explored two key areas: (i) why farmers in Bangladesh sell soil from their fertile agricultural land and (ii) the impacts of this soil removal on agricultural productivity and farmer income

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Summary

Introduction

Bangladesh’s population growth and increasing affluence have contributed to increased construction and demand for building materials (BBS 2012). Research in Tamil Nadu, India, found that following topsoil removal for brick production, soil manganese was reduced by 35% and zinc by 63%, and on average, topsoil removal resulted in a loss of about 28 kg of nitrogen, 3 kg of phosphorous and 34 kg of potash per hectare of land. This removal of topsoil was associated with a 124 kg per hectare (3%) reduction in rice yields and 62 kg per hectare (4%) reduction in groundnut yields (Kathuria and Balasubramanian 2013)

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