ISHS Acta Horticulturae 702: V International Pineapple Symposium
FURTHER INVESTIGATION OF THE EFFECTS OF THIOFLO ON BLACK SPOT OF PINEAPPLES |
| Authors: | B.Q. Manicom, E.C. Rabie, H.A. Tustin |
| Keywords: | control, Fusarium, mites, Penicillium, Steneotarsonemus |
| Abstract:
We have reported on the unexplained increase in black spot which was ob¬served where Thioflo (endosulfan) was applied for mite control on Queen pineapples in Hluhluwe. The previous trials were not all replicated, two being observational trials, but sufficient concern was raised for growers to cease using Thioflo. The current series of trials was initiated to establish whether Thioflo applications increased black spot incidence in pineapple. The trial was designed as a randomised block with seven treatments and four replicates, repeated on three farms. A five spray Thioflo program effectively controlled mites but was consistently and significantly in the worst group as regards black spot control at all sites. This contradicts previous results obtained with varying endosulfan sprays from the Eastern Cape and else¬where, including Hluhluwe. | |
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