STUDIES ON THE EFFICACY OF MEDIA INCORPORATED WITH PUSA HYDROGEL ON GROWTH AND QUALITY OF COLEUS (Coleus Blumei L.) UNDER POLYHOUSE CONDITION
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Date
2017-07-24
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
An experiment was conducted at the Floriculture unit of the Department of
Horticulture, College of Agriculture, GKVK campus, University of Agricultural
Sciences, Bengaluru, during 2016-17 on “Studies on the efficacy of media incorporated
with Pusa Hydrogel on growth and quality of coleus (Coleus blumei L.) under polyhouse
condition”. The experiment was laid out in completely randomized design with four
replications and five treatments. Four different concentrations of Pusa Hydrogel @10g,
20g, 30g, 40g each were mixed with 5kg of potting media before planting, and set as
treatments. The results of the experiment indicated that treatment 5 (40 gm of Pusa
Hydrogel per 5kg of potting media) and treatment 4 (30 gm of Pusa Hydrogel per 5kg of
potting media) were found to be on par and recorded significantly higher growth and
water use efficiency over control. Maximum plant height (38.5cm), number of branches
(18.1), plant spread in both East-West and North-South directions (42.00 cm and 41.25
cm respectively), stem diameter (1.27 cm), number of leaves (92.2), leaf length and width
(8.2 and 5.4 cm respectively) petiole length and girth (2.6 cm and 2.3 respectively), shoot
fresh and dry weight (130.0 gm and 12.25 gm respectively), root fresh and dry weight
(36.0 and 6.50 gm respectively), root length (25.0 cm) and volume (24.0 cm3) and
chlorophyll content (SPAD value of 30.63) was recorded in treatment-T5 which was on
par with the treatment-T4 and least values were observed in control. Significantly least
cumulative quantity of water (22.7 litre), frequency of watering (once in 2.85 days) and
highest BC ratio (1:40) was recorded in the same treatment (T5) followed by treatment T4
when compared to control (37.8, 1.09 and 1.06 respectively). Water saving to an extent
of 39% could be achieved by the application of pusa hydrogel @ 40 gm per 5 kg of
potting media in coleus production.
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