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- W2920687542 abstract "In the rainfed lowlands, a hardpan may be considered beneficial if leaching loss is reduced, or detrimental if root access to resources deeper in the profile is denied. This paper contrasts research into the coarse-textured, permeable soils of northeast Thailand with research into the silty, compaction-prone soils of northwest Bangladesh. The former research has indicated a benefit to yield of rainfed lowland rice by compacting the subsoil, which reduces percolation losses and increases resource availability to the crop. In contrast, use of deep cultivation or a pre-rice legume to perforate the hardpan is resulting in higher yields of rainfed lowland rice in the latter. Recent research exploring variation among rice lines in their capacity to penetrate a hardpan is also reviewed. The results are discussed in relation to recent research which indicates that control of root development under the anaerobic-aerobic transitions of the rainfed lowlands is not clear. The paper concludes that further understanding is required of factors which control root system development under rainfed lowland conditions. Crop simulation would also assist definition of conditions in which making or breaking the hardpan may be beneficial, and in quantifying the associated probabilities for contrasting sites." @default.
- W2920687542 created "2019-03-11" @default.
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- W2920687542 date "1995-01-01" @default.
- W2920687542 modified "2023-09-24" @default.
- W2920687542 title "Soil compaction - Make it or break it for rainfed lowland ecosystems" @default.
- W2920687542 hasPublicationYear "1995" @default.
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