The effect of the addition of Sporekill ® to a standard copper spraying for the postharvest management of mangoes.
Pypekamp W. van de, Swart S. H.
Author Affiliation: QMS Agri Science, Posbus 416, Letsitele 0885, South Africa.
27 : 58-62
Abstract : The efficacy of Sporekill and Sporekill [quarternary ammonium compound] + iron chloride sprayed in mixtures with Dimildex [copper oxychloride] at reduced rates (150 and 200 g/100 litres) for the control of anthracnose (Colletotrichum gloeosporioides [Glomerella cingulata]) and stem-end rot (Botryosphaeria sp.) of mango (cv. Kent) was evaluated and compared with that of 300 g Dimildex/100 litres (control) at Bavaria Estates in the Hoedspuit area, South Africa. Dimildex was the most effective in the control of postharvest decay on mango. The reduction in the rate of copper increased disease expression regardless of the incorporation of iron chloride, Sporekill or Sporekill + iron chloride. Dimildex applied at 150 g resulted in a greater control of decay compared to Dimildex at 200 g/100 litres + iron chloride and Sporekil or Dimildex and Sporekill alone. Sporekill sprayed on its own as a preharvest treatment exhibited poor control of postharvest diseases.