Assessment of the impact of some common weed management methods on the growth and yield of pineapples in Ghana

Abstract

A 5X5 Latin Square experiment was conducted in a farmer’s field in the Ga East Municipality of the Greater Accra Region to evaluate the efficacies of different weed management systems and their effect on pineapple production. The different weed management systems evaluated were T1 - weedy check, T2- manual weed control (hoeing) only, T3- synthetic herbicide alone, T4- manual weed control and plastic mulch and T5- herbicide and plastic mulch. Treatments were replicated five times. Suckers were planted at a spacing of 90cm X 60cm X 25cm on 27 August 2010. Appropriate cultural practices were done at the right times. The results indicated that in all the growth parameters, the two plastic mulched treatments showed the greatest effect, followed by the herbicide-applied only treatment over that of the manual weeding treatment. Weed re-emergence was almost nil on the plastic mulched plots. Fruit weight of the two-plastic mulched treatments was similar, but was significantly higher than all other treatment effects. However, percentage exportable fruits were similar among the synthetic and plastic mulch treatments. The results showed that farmers are better off if they add plastic mulch to the application of herbicides for more effective weed control and quality fruit yield