Claim · model-written summary
The yield decrease after soil mixing is attributed to lowered availability of soil phosphorus.
- Taxon
- subterranean clover
Trifolium subterraneume1 - Compound
- soil phosphoruse2
- Outcome
- yield of subterranean clovere1
- Qualifier
- lowered availabilitye2
Verbatim
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”
e2“This was shown to be due to lowered availability of the soil phosphorus and was probably brought about by sorption of the available phosphorus, which had accumulated at the soil surface, by the unsaturated subsurface soil”
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)
- Intervention effect Uniform mixing of the surface 4 in. of pasture soils decreased subterranean clover yield compared with undisturbed soil.
- 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.
Oryza sativa