COST REDUCTION OF POWDERY MILDEW CONTROL IN MANGO WITH MONO POTASSIUM PHOSPHATE

S.A. Oosthuyse
Mono potassium phosphate (KH2PO4 or MKP), a potassium-phosphate fertiliser, was applied in a spray to flowering Kent and Tommy Atkins mango trees, either alone or with conventionally used curative fungicides (Punch C, Benlate, Folicur, Porchloraz, or wettable sulfur) generally at quarter strength. Unsprayed trees served as controls, and certain trees were sprayed with Bayfidan at full strength. In Kent, the fungicide/MKP mixes were almost as effective as Bayfidan at full strength in reducing tree percentage of diseased inflorescences. MKP applied alone was less effective than Bayfidan in this regard. In Tommy Atkins, the fungicide/MKP mixes were as effective as Bayfidan at full strength in reducing tree percentage of diseased inflorescences. MKP applied alone was apparently slightly less effective than Bayfidan in this regard. In Kent and Tommy Atkins, the extent of mildew inflorescence colonisation was reduced by every spray. In Kent, the reduction was most marked following Bayfidan application. The results clearly show that MKP is effective in retarding the development of powdery mildew on mango inflorescences, and can thus be used to reduce the cost of powdery mildew control in mango.
Oosthuyse, S.A. (2000). COST REDUCTION OF POWDERY MILDEW CONTROL IN MANGO WITH MONO POTASSIUM PHOSPHATE. Acta Hortic. 509, 719-724
DOI: 10.17660/ActaHortic.2000.509.83
https://doi.org/10.17660/ActaHortic.2000.509.83
Mangifera indica, cost reduction, disease, fertiliser, mono potassium phosphate, powdery mildew, spray

Acta Horticulturae