Claim · model-written summary
Uniform mixing of the surface 4 in. of pasture soils decreased subterranean clover yield compared with undisturbed soil.
Trifolium subterraneumVerbatim
e1“Compared with growth on undisturbed soil, uniform mixing of the surface 4 in. of pasture soils caused a decrease in the yield of subterranean clover grown in pot culture”
Title
Some effects of cultivation and waterlogging on the availability of phosphorus in pasture soils
CH Williams; JR Simpson Australian Journal of Agricultural Research 1965. doi:10.1071/ar9650413
Other claims from this paper (6)
- Mechanism The yield decrease after soil mixing is attributed to lowered availability of soil phosphorus.
- Intervention effect Short periods of waterlogging (1–2 days) lowered soil phosphorus availability in subterranean clover pasture soils.
- Intervention effect The lowering of soil phosphorus availability by waterlogging was much more severe in mixed soil than in undisturbed soil cores.
- Mechanism Phosphate was converted to non-available forms during short anaerobic conditions, which appeared to cause the lowered phosphorus availability.
- Intervention effect Waterlogging increased the phosphate sorption capacity of the soil.
- Intervention effect Air-drying returned the waterlogging-increased phosphate sorption capacity to its original value.