Matamwa, Watson

Blair, Graeme

Guppy, Christopher

Yunusa, Isa

2018

As single superphosphate availability decreases due to closure of aging manufacturing plants increasing attention is being paid to alternative phosphorus (P) and sulfur (S) sources. This glasshouse study, conducted under non-leaching conditions was undertaken to evaluate the S supplying capacity of gypsum, S bentonite, elemental S (ES) and a range of P containing fertilizers and those where ES was added as a coating or incorporated. The magnitude of crop response in terms of shoot biomass to applied S fertilizer sources followed the order of sulfates > powdered ES > coated/incorporated ES > S/ bentonite. These results indicate that fertilizers containing a mixture of sulfate and micronized ES (<75 μm), either incorporated within the granule or coated onto the fertilizer are agronomically effective. The results also suggest that local S coating of finished fertilizers is a feasible alternative to S incorporation undertaken at a central fertilizer plant.

Communications in Soil Science and Plant Analysis, 49(4), p. 433-443

1532-2416

0010-3624

https://hdl.handle.net/1959.11/23003

en

Taylor & Francis Inc

Plant Availability of Sulfur Added to Finished Fertilizers

Journal Article

Publication