M. J. Islam
Bangladesh Rice Research Institute, Gazipur -1701, Bangladesh
S. S. Parul
Bangladesh Rice Research Institute, Gazipur -1701, Bangladesh
A.B. M.B.U. Pathan
Bangladesh Rice Research Institute, Gazipur -1701, Bangladesh
M. S. Islam
Bangladesh Rice Research Institute, Gazipur -1701, Bangladesh
M. A. Quasem
Bangladesh Rice Research Institute, Gazipur -1701, Bangladesh
ABSTRACT
Winter dry season is mainly depends on irrigation. Because, the rainfall in this season is almost zero. At the end of this season, ground water mainly remains at about 10-12 meter depth. On the other hand, the crop then remains at booting to flowering stages. During this period, a huge number of cracks developed on the puddled field due to shortage of water. Consequently, the size and number of cracks depend on the irrigation interval, the intensity and duration of drought spell. The sizes of the cracks are range about 10-30 mm wide. Normally, the major cracks goes below puddled layer of 70-100 mm and almost all the cracks are interlinked and remain active through the growing season. Therefore, a major portion of the irrigation water lost through this cracks. Hence, a large area remains fallow due to proper management and shortage of irrigation water. Therefore, irrigation application efficiency to be increased in cracking soils by reducing seepage and drainage losses in paddies. As a result, it is important to develop irrigation scheduling of rice for cracking soils on the basis of crack size rather than estimating crop water requirements based on evapotranspiration (ET) demand.
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How to cite this article
M. J. Islam, S. S. Parul, A.B. M.B.U. Pathan, M. S. Islam and M. A. Quasem, 2004. Influence of Cracking on Rice Seasons and Irrigation in Bangladesh. Journal of Biological Sciences, 4: 11-14.
DOI: 10.3923/jbs.2004.11.14
URL: https://scialert.net/abstract/?doi=jbs.2004.11.14
DOI: 10.3923/jbs.2004.11.14
URL: https://scialert.net/abstract/?doi=jbs.2004.11.14
REFERENCES
- Adams, J.E. and R.J. Hanks, 1964. Evaporation from soil shrinkage cracks. Soil Sci. Soc. Am. J., 28: 281-284.
Direct Link - Islam, M.J., L.R. Bhuiyan and M.A. Ghani, 1991. Supplemental irrigation: A safeguard technique for successful cultivation of monsoon rice in Bangladesh. Irrig. Drain. Syst., 5: 351-362.
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