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Influence of Artificial defoliation on the Growth and Yield of Okra (Abelmoschus esculentus (L) Moench)

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Publisher: ADEWUNMI

Authors: Adewunmi ET AL

Publish Year: 2013

Pages: 5

ISBN10: 234-456

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This study investigated the influence of artificial defoliation on the growth and yield of Okra (Abelmoschus esculentus (L.)
on the loamy soil of Federal College of Agriculture, Moor plantation, Ibadan, Oyo State Nigeria. Two seeds of Okra each
were sown on ridges using identical randomized block design experiment with split plots replicated four times each, at a
spacing of 60cm x 60cm during the raining season of 2011. Defoliations were carried out at different period of growth so
as to monitor the development and yield of the crop. Artificial defoliation of Okra at 4, 6 and 8 weeks after sowing
generally delayed flowering, decreased plant height and stem girth at flowering and reduced the harvest duration. Pod
length, pod diameter, means pod weight and number of pods per plant was also decreased by defoliation but pod yield per
hectare was not. The removal of leaves form upper half of the stem only had a similar effect to complete defoliation
whereas the removal of leaves from the lower half only, had no significant effect, indicating that the leaves on the upper
stem contributed more to growth and yield than the lower ones. Defoliation of the upper half of the plant and complete leaf
removal generally increased the days to 50% flowering and decreased the harvest duration when defoliation occurred at 4,
6 and 8 weeks after sowing.

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