Vol. 3 (6) : November-December 2012 issue
Green Farming Vol. 3 (6) : 637-641 (November-December, 2012)
Effect of nitrogen fixing bacteria in combination with organic manures and fertilizers on dry matter production and uptake of N, P and K in Coleus (Coleus forskohlii B.)
M. RAVIKUMAR1*, J. VENKATESHA2, K.S. NIRANJANA3 and B.R. GURUMURTHY4
Horticultural Research Station (University of Horticultural Sciences, Bagalkot ), Seebinakere Farm, Thirthahalli - 577 432, Shivamogga Dist. (Karnataka)
Designation : 1Associate Professor *(raviyalavahalli@gmail.com), 2Dean, 3Tech. Asstt., 4Professor & Head
Subject : Medicinal & Aromatic Plants, Food Shrub and Fruits
Paper No. :
Total Pages : 5
Received : 18 June 2012
Revised accepted : 27 October 2012
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ABSTRACT
A field experiment was conducted at Arabhavi located under Western dry zone of Karnataka on a clay loam soil with a pH of 7.6 during kharif season of 2006 and 2007 to study the effect of nitrogen fixing bacteria in combination with organic manures and inorganic fertilizers on dry matter production and uptake of N, P and K in coleus (Coleus forskohlii B.) (cv. K-8). Application of RD FYM + RD NPK + neem cake (1 t/ha) + Azotobacter + Azospirillum recorded significantly higher values for dry weight of leaves (89.93 g) stem (121.23 g), aerial parts (211.16 g), total dry weight (246.15 g), dry matter per cent of leaf (15.95 %), stem (20.32 %), aerial parts (18.20 %) and total dry matter per cent (17.95 %). It also recorded maximum content of nitrogen (1.21 %), phosphorus (0.60 %) and potassium (1.64 %) in plants and maximum uptake of nitrogen (123.79 kg/ha), phosphorus (58.93 kg/ha) and potassium (163.90 kg/ha).
Key words :
Coleus forskohlii, Dry matter production, Forskolin, Nitrogen fixing bacteria, Nutrient uptake.
