The changes in soil texture within the puddle layer as a consequence of redistribution of soil particles during settling after soil puddling was evaluated.
The effect of puddling ratio on the soil physical properties on the 3 different-textured soils was assessed using linear and multi-variable regression procedures.
Table 1 shows that the puddling ratio was significantly related to dispersible clay, clay plus silt, saturated hydraulic conductivity, and bulk density.
The effect of low and high puddling intensity, or puddling ratios of 3.
Dispersed clay was higher under high puddling intensity.
The formation of a clay surface seal due to puddling also affects water movement following the rice phase, in particular during the period before the seal ruptures due to crack formation.
The puddling ratio is a reasonable expression of the degree of puddling intensity and reflects changes in soil physical properties.
The formation of a clay seal due to puddling results in decreased soil drying rates in particular on coarse-textured soils.
Sharma PK, DeDatta SK (1985) Effects of puddling on soil physical properties and processes.
Puddling intensity increased yields on the loam but decreased yields on the silty loam.
Figure 6 shows the results of the regression analysis for the 3 different soils in the puddling experiment.
Soil puddling can potentially be reduced without affecting rice yields, except on loam soils.
Kirchhof G, So HB (2005) Soil puddling for rice production under glasshouse conditions--its quantification and effect on soil physical properties.
Sharma PK, Bhagat RM (1993) Puddling and compaction effects on water permeability of texturally different soils.
Water use at different growth stages of mungbean as affected by puddling and soil type Water uptake stage Silty loam Clay Puddling intensity: Low High Low High Initial drying rate (mm/day) 2.