Locally made and imported phosphate fertilizers a financial comparison

Abstract EN

This study was conducted at the experimental field of the College of Agricultural Studies, Sudan University of Science and Technology -Shambat during winters of 1999-2000 and 2000-200 1.

The study was performed to compare, agronomically and financially, the effect Of a locally- made partially acidulated phosphate rock (PAPR) from Jebel Kurun in Nuba Mountains of western Sudan to that of the imported triple superphosphate (TSP).

The treatments tested consisted of two phosphorous (P) sources i.e.

TSP and PAPR.

A combination of the two sources and inoculation of the test crop (wheat) with mycorrhizae fungus were also tested.

The treatments were applied at three comparable levels (43.0, 64.5 and 86 kg ha-1 P2O5 designated as 1P, 1 .5P and 2P) and arranged in a randomized complete block design.

The residual effect of the P sources was also evaluated.

Financial comparison between the different treatments was conducted.

The results indicated that it is profitable to use PAPR of Jebel Kurun as a P source for fertilization at the rate of 258 kg ha-1 (64.5 kg P ,or by mixing with TSP at 15%TSP +85% PAPR at IP level, 25%TSP+75% PAPR at l.5P level or 50% TSP ± 50% PAPR at 1.

5P level.