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| Authors: | R.T. Wurster, P.G. Moe |
Abstract:
An experiment was conducted to measure the effects of type of mulching material, propagation material, level of foliar applied urea and supplemental irrigation on the time to maturity and total yield of marketable pineapple fruit in Uganda.
The results of the study can be summarized as follows:
- A marked yield increase of up to 10 metric tons per ha occurred with the use of black polythene or elephant grass mulches.
Early nitrogen deficiency symptoms were observed in the foliage of plants grown with grass mulch, but no depression in total yield was caused by the use of grass mulch.
- Significant yield increases occurred with the use of foliar applied urea up to levels of 600 kg of N per ha per annum without any toxicity symptoms.
The peak of the nitrogen response curve was not reached in this experiment.
- A significant interaction between mulchting practices and urea treatments showed that mulches are even more important in obtaining good yields under low nitrogen status conditions.
- Early yields of fruit produced from slips and suckers were greater than yield of fruit produced from crowns, but there were no significant differences between the type of propagating material in the total yield of fruit produced.
- Irrigation was not found to be essential for the production of pineapple and actually depressed yields under the conditions of this experiment.
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