Atmospheric Chemistry and its impact on crop production in Bangladesh
1989
Abedin Miah, M.J. | Blume, H.P. | Bhuiya, Z.H. | Eaqub, M.
Rain water was collected at Bangladesh Agricultural University campus, Mymensingh from different periods of the year and analysed to see the chemistry of atmosphere, and its impact on crop production and nutrient dynamics in soil. Results show that rain water from winter and premonsoon periods contained higher amount of most of the properties studied than water from mid and post monsoon periods. Higher accumulation in the atmosphere due to low intensity and amount of rainfall and the dust particles carried into the atmosphere by strong wind of premonsoon period were mainly responsible for higher winter and premonsoon concentration, whereas, the composition of sea water and high rainfall were the main factors that influenced the mid and post monsoon concentration. The deposition of N by rainfall in Bangladesh was much higher than in other countries of the world. In addition to other factors, the loss of N from the increased use of N fertilizers was thought to be the primary reason for such a high deposition. Although rainfall added some amount of nutrients to soil it carried a greater amount from surface soil to ground water during percolation. The amount of water required by summer (aus) and autumn (aman) rice obtained from atmospheric precipitation.
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