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The Journal of Food Technology in Africa
Innovative Institutional Communications
ISSN: 1028-6098
Vol. 7, No. 1, 2002, pp. 16-20
Bioline Code: ft02005
Full paper language: English
Document type: Research Article
Document available free of charge

The Journal of Food Technology in Africa, Vol. 7, No. 1, 2002, pp. 16-20

 en Responses of Several Apple Cultivars to Chemical Thinning Sprays
George Ouma and Frank Matta


Studies were conducted in 1995 and 1996 at Pontotoc country, Mississippi, U.S.A. to find the effect of two chemical thinners namely: accel (N-phenylmethyl) (H-purine 6-amine (6-BA) and carbaryl (1-Naphthyl carbamate) sprayed two weeks after bloom on the apple fruit characteristics such as fruit set, yield, etc. The three apple cultivars used were 'Empire', 'Jon-A-Red' and 'Braeburn'. The treatments comprised accel (25, 50 and 75 ppm), carbaryl (0.05, 0.1 and 0.2%) and unsprayed control.

It was found that accel and carbaryl thinned the three apple cultivars and yield (total fruit weight per tree), pH, sugar content were significantly (P£ 0.05) increased by the chemical thinning sprays. Nevertheless, the treatments did not affect (P£ 0.05) the number of seeds in the fruit, fruit length, fruit diameter and fruit length to diameter ratio. The chemical thinner and cultivar interactions were significant for some fruit characteristics.

Fruit Thinning, Fruit Set, Yield and Quality

© Copyright 2001 The Journal of Food Technology in Africa, Nairobi

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