Herbage yield of Stevia (Stevia rebaudiana Bert.) in response to doufos granules, organic growing media and levels of carbonized rice hull
2017
Gayla, J.K.L. | Politud, E.R.R.
Stevia rebaudiana Bert. is a native tropical plant from Brazil and Paraguay with therapeutic benefits. Its leaves produce a sweetener-stevioside which is 150-300 times sweeter than cane sugar. Investigation on herbage yield of Stevia in response to doufos granules an organic growing media, and levels of carbonized rice hull was conducted from November 2016 to January 2017 in Ornamental Green House of the College of Agriculture, University of Science and Technology of Southern Philippines. No significant difference was observed among treatments in terms of growth and herbage yield parameters. The plants growth in medium composed of 1/3 kg sand + 1/3 kg vermicast + 1/3 kg garden soil + 200 g carbonized rice hull had the most number of leaves (63.84), highest fresh leaf yield (19.67 g), highest fresh herbage (847.22 kg/ha), oven-dried leaf yield (152.78 kg/ha), highest fresh stem weight (21 g), lowest leaf curling incidence (1.67 counts), highest gross sales (Php 763,900.00/ha) and R0I (124.35%) while planting in pure garden soil led to the least fresh herbage (506.65 kg/ha) and oven-dried leaf yield (97.49 kg/ha).
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