ISHS Acta Horticulturae 291: III International Mango Symposium
CHEMICAL CONTROL OF STEM END ROT IN MANGO |
| Authors: | R.A. Peterson, G.I. Johnson, L.G. Schipke, A.W. Cooke |
| Abstract:
Kensington Pride mango trees were sprayed from early flowering to fruit maturity to reduce stem end rot in the stored fruit. In 1987, fruit were held under two storage regimes 25° and 13°C while in 1988, half the fruit received a postharvest treatment of a prochloraz dip prior to storage. Dothiorella dominicana, D. manqifera, Lasiodiplodia theobromae, and Phomopsis manqiferae were the dominant fungi associated with stem end rot. Colletotrichum qloeosporioides var. minor was the most common organism recovered from lesions at the stem end of the fruit. Other organisms recovered were Botrytis sp., Pestalotiopsis sp. and Alternaria alternata. Preharvest treatments failed to give across the board control of all the organisms. Propiconazole and iprodine gave a level of control. More disease developed in fruit stored at 13°C compared to 25°C and prochloraz as a postharvest dip reduced the incidence of fruit diseases. | |
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