Effect of soil bulk density and moisture regime on the root development of wheat (Triticum aestivum) [in Bangladesh]
1990
Miah, M.A.M. | Faiz, S.M.A. | Khan, T.H. | Alam, M.K.
An experiment was conducted in the greenhouse of the Soil Science Department, Dhaka University to study the effect of four levels of soil bulk density (1.46, 1.51, 1.55 and 1.63 g/cm3) at five soil moisture levels (7, 10, 15, 20 and 25%) on the root development of wheat. At lower moisture levels (7 and 10 %), an increase in soil bulk density up to 1.51 g/cm3 increased the length, surface area and weight of wheat roots while at higher moisture levels increasing soil bulk density beyond 1.46 g/cm3 decreased these root parameters. The total length of roots was much higher in the lower depths of soil in the pots at lower bulk density levels (1.45 and 1.51 g/cm3), than in pots containing soil at higher bulk density (1.55 and 1.63 g/cm3). An increase in soil water content up to 20%, increased the root length and surface area in the upper layers of soil. This was true for all bulk density levels. A soil bulk density of 1.46 g/cm3 associated with 20% moisture favoured the maximum growth of root.
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