Reactive Nitrogen in Crop, Fishery and Livestock Sectors of Bangladesh

Authors

  • Md Mizanur Rahman Dept. of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
  • Jatish Chandra Biswas Soil Science Division, Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh

DOI:

https://doi.org/10.3329/agric.v18i1.49467

Keywords:

Urea fertilizer, industrial effluents, manure, environment

Abstract

Agriculture in Bangladesh is characterized by crop, fishery and livestock sectors. Urea-N is used in all three sectors. Crop sector plays a dominant role in urea consumption to supply of food for ever burgeoning population. Application of inorganic N fertilizer definitely increased agricultural productivity. This however playing a significant role in altering global nutrient budget, water quality, greenhouse gas emission, and ultimately affecting the global climate. Though cropping intensity and use of N fertilizer have increased, yield plateauing is a concern for food security. Recovery efficiency of N rarely exceeds 30% in both crop and fish culture, while remaining reactive N is a global concern. Different industries have emerged in the last decade producing huge amounts of effluents discharging to the environment without treatment which appeared as a potential threat in damaging and disintegrating the environment. Resultant negative effect from application of large amount of organic and inorganic fertilizers and feeds in fishponds is a matter of boundless anxiety as it might act as a source of reactive N. Livestock sector comprising poultry and dairy produce huge amount of manure annually which is equivalent to 0.30 million tons of N and because of poor manure management reactive N is spreading in the environment. Reluctant attitudes on these crucial issues might bring a disaster through stopping natural ecosystem functions of the environment from where ‘U’ turn will rather be impossible. Adoption of resource conservation strategies, judicial and optimum use of N fertilizers in all agricultural sectors, improved management of livestock manure and industrial effluents are strongly recommended for environmental sustainability.

The Agriculturists 2020; 18(1) 144-163

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Published

2020-09-29

How to Cite

Rahman, M. M., & Biswas, J. C. (2020). Reactive Nitrogen in Crop, Fishery and Livestock Sectors of Bangladesh. The Agriculturists, 18(1), 144–163. https://doi.org/10.3329/agric.v18i1.49467

Issue

Section

Review Articles