AS  Vol.4 No.8 , August 2013
Effects of puddling on percolation and rice yields in rainfed lowland paddy cultivation: Case study in Khammouane province, central Laos

We investigated the effects of puddling on percolation and rice yields in rainfed lowland paddy cultivation. We selected a study village in Khammouane province, central Laos, and set up non-puddling and puddling plots from high to low positions. Even when puddling was conducted carefully, the ponding water in the plots disappeared in the case of little rainfall. Further, percolatifons during the later periods of rice growth increased drastically. Therefore, it is difficult to overcome drought stresses only by conducting puddling. We also compared the water conditions in the non-puddling and puddling plots. In the puddling plots at high position and low position along a stream, the number of days without ponding water in the puddling plots was less than that in the non-puddling field in July, suggesting the possibility of a different transplanting date. We tried to estimate the effects of transplanting date on the rice yields and found that transplanting 15 days earlier leads to an increase of 0.5 t/ha in the rice yields. Moreover, the profits from the increased yields exceed the puddling costs considerably, leading to a definite increase in income. Because the transplanting date has no effects in the fields with high ground water, puddling is effective in paddy fields where ponding does not occur to a significant degree.

Cite this paper: Fujihara, Y. , Yamada, R. , Oda, M. , Fujii, H. , Ito, O. and Kashiwagi, J. (2013) Effects of puddling on percolation and rice yields in rainfed lowland paddy cultivation: Case study in Khammouane province, central Laos. Agricultural Sciences, 4, 360-368. doi: 10.4236/as.2013.48052.

[1]   Maclean, J.L., Dawe, D.C., Hardy, B. and Hettel, G.P. (2002) Rice almanac: Sourcebook for the most important economic activity on earth. CABI Publishing, Wallingford.

[2]   Wade, L.J., Fukai, S., Samson, B.K., Ali, A. and Mazid, M.A. (1999) Rainfed lowland rice: Physical environment and cultivar requirements. Field Crops Research, 64, 3-12. doi:10.1016/S0378-4290(99)00047-7

[3]   Yamada, R. (2010) Agricultural structure and poverty in rainfed areas of central Laos. Journal of Agricultural Development Studies, 20, 50-57 (in Japanese).

[4]   Suzuki, K., Goto, A., Mizutani, M. and Sriboonlue, V. (2003) Simulation model of rainfed rice production on sloping land in Northeast Thailand. Paddy and Water Environment, 1, 91-97. doi:10.1007/s10333-003-0017-0

[5]   Tsubo, M., Fukai, S., Tuong, T.P. and Ouk, M. (2007) A water balance model for rainfed lowland rice fields emphasising lateral water movement within a toposequence. Ecological Modelling, 204, 503-515. doi:10.1016/j.ecolmodel.2007.02.001

[6]   Miyagawa, S. (1997) Simulation of water uses improvement effect in rain-fed rice cultivation in Northeast Thailand. Japanese Journal of Tropical Agriculture, 41, 275-285.

[7]   Boling, A.A., Bouman, B.A.M., Tuong, T.P., Murty, M.V.R. and Jatmiko, S.Y. (2007) Modelling the effect of groundwater depth on yield-increasing interventions in rainfed lowland rice in Central Java, Indonesia. Agricultural Systems, 92, 115-139. doi:10.1016/j.agsy.2006.05.003

[8]   Sharma, P.K., Ingram, K.T. and Harnpichitvitaya, D. (1995) Subsoil compaction to improve water use efficiency and yields of rainfed lowland rice in coarse-textured soils. Soil and Tillage Research, 36, 33-44. doi:10.1016/0167-1987(95)00499-8

[9]   Adachi, K. (1992) Effect of puddling on rice physical: Softness of puddled soil on percolation. In: Asian Institute of Technology, Proceedings of International Workshop of Soil and Water Engineering for Paddy Field Management, Asian Institute of Technology, Bangkok, 220-231.

[10]   Tabuchi, T. and Yamafuji, I. (1992) Effect of puddling on percolation rate and nitrogen concentration in percolating water. Journal of the Japanese Society of Soil Physics, 66, 47-54.

[11]   Tuong, T.P., Wopereis, M.C.S., Marquez, J.A. and Kropff, M.J. (1994) Mechanisms and control of percolation losses in irrigated puddled rice fields. Soil Science Society of America Journal, 58, 1794-1803. doi:10.2136/sssaj1994.03615995005800060031x

[12]   Ogura, C., Sukchan, S. and Narioka, H. (2007) Characteristics of precipitation in Nong Saeng Village, Khon Kaen Province, Northeast Thailand. Japan Agricultural Research Quarterly, 41, 325-332.

[13]   Fujihara, Y., Oda, M., Horikawa, N. and Ogura, C. (2011) Hydrologic analysis of rainfed rice areas using a simple semi-distributed water balance model. Water Resources Management, 25, 2061-2080. doi:10.1007/s11269-011-9796-z

[14]   Homma, K., Horie, T., Shiraiwa, T., Sripodok, S. and Supapoj, N. (2004) Delay of heading date as an index of water stress in rainfed rice in mini-watersheds in Northeast Thailand. Field Crops Research, 88, 11-19. doi:10.1016/j.fcr.2003.08.010

[15]   Homma, K., Horie, T., Shiraiwa, T. and Supapoj, N. (2007) Evaluation of transplanting date and nitrogen fertilizer rate adapted by farmers to toposequential variation of environmental resources in a mini-watershed (Nong) in Northeast Thailand. Plant Production Science, 10, 488-496. doi:10.1626/pps.10.488

[16]   Hasegawa, T., Sawano, S., Goto, S., Konghakote, P., Polthanee. A., Ishigooka, Y., Kuwagata, T., Toritani, H. and Furuya, J. (2008) A model driven by crop water use and nitrogen supply for simulating changes in the regional yield of rain-fed lowland rice in Northeast Thailand. Paddy and Water Environment, 6, 73-82. doi:10.1007/s10333-007-0099-1