The literature contains many accounts recording the positive effects of applying phosphorus fertilizer
to a localized area, usually near the plant roots, as opposed to a general soil broadcast application.
Reviews on the subject of fertilizer placement should be consulted for detailed information (97,98)
. Localized placement of phosphorus fertilizers might include row, band, or strip placement.
It is generally presumed that a localized or band application reduces fertilizer contact with the
soil thereby resulting in less phosphorus sorption and precipitation reactions and, thus, enhanced
availability to crops. However, for soils with a high phosphorus-fixing capacity, where phosphorus
is relatively immobile, placement of the fertilizer where root contact is enhanced may be an equally
or more important mechanism than restricting fixation (99–101)