Effects Of Artificial Defoliations On The Growth And Yield Of Okra Abelmoschus Esculentus L.Moench. CV Smooth Cayene Under Mid-Elevation Condition
Journal: International Journal of Scientific & Technology Research (Vol.5, No. 4)Publication Date: 2016-04-15
Authors : Eric Randy R. Politud;
Page : 245-249
Keywords : Defoliation; defoliation of lower half of the stem DLHS; erectophile; leaf area index LAI; mutual shading; pods; Smooth Cayene; return on investment ROI; week after sowing WAS;
Abstract
Defoliation of the lower leaves of the stem provides the upper leaves to maximize their photosynthetic activity thus optimizing their growth and yield potentials. This study was conducted to determine the effect of artificial defoliations on the growth and yield of okra under the mid-elevation condition of Bukidnon Northern Mindanao Philippines. A Randomized Complete Block Design RCBD with four treatments and three replications was used namely T1 no defoliation T2 defoliation of lower half of the stem- DLHS at 5 weeks after sowing-WAS T3 DHLS at 6 WAS and T4 DLHS at 7 WAS. Results revealed that artificial defoliations significantly influenced the production of pods weight of pods per plant and the total pod yield per hectare but not with the plant height pest resistance days to flowering and length and diameter of pods. Removal of the lower leaves of the stem paved the way for upper leaves to intensify photosynthetic activity and minimized mutual shading and competition for foods. Treatment 4 consistently obtained the most number of pods 82 heaviest pods per plant 394.81 g and highest total yield 9.87 tha. Consistently T4 defoliation at 7 WAS registered the highest ROI with 425 while T1 obtained the lowest with 316.11. Thus defoliations at 7 WAS of the lower leaves gave better growth and yield performance of Smooth Cayene variety than those undefoliated under the mid-elevation condition of Bukidnon.
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