Vol. 6 (6) : November-December 2015 issue
Green Farming Vol. 6 (6) : 1276-1280 ; November-December, 2015
Effect of organic manures on growth, yield, quality & nutrient uptake of medicinal coleus (Plectranthus forskohlii Willd.)
S.S. SARASWATI1*, A.B. MASTIHOLI2, AJITHKUMAR S.3, MUKESH L. CHAVAN4 and H.T. SAKHUBAI5
K.R.C. College of Horticulture (Univ. of Horticulture Sciences, Bagalkot), Arabhavi - 591 218 (Karnataka)
Designation : 1P.G. Student *(saraswati.639@gmail.com), 2,4Assoc. Professor 3,5Ph.D. Scholar
Subject : Medicinal & Aromatic Plants, Food Shrub and Fruits
Paper No. : Combination of P-3626 & P-3648
Total Pages : 5
Received : 21 April 2015
Revised accepted : 02 November 2015
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Citation :
S.S. SARASWATI, A.B. MASTIHOLI, AJITHKUMAR S., MUKESH L. CHAVAN and H.T. SAKHUBAI. 2015. Effect of organic manures on growth, yield, quality & nutrient uptake of medicinal coleus (Plectranthus forskohlii Willd.). Green Farming Vol. 6 (6) : 1276-1280 ; November-December, 2015
ABSTRACT
The tuberous roots of the medicinal coleus (Plectranthus forskohlii Willd.) are the only source for forskolin among the plant kingdom. Application of pongamia cake equivalent to 100 per cent RDN (Recommended dose of nitrogen) recorded the highest plant height and number of branches. Plants provided with FYM equivalent to 100 per cent RDN gave 1.28 t per hectare of dry tuberous root yield. However, poultry manure, pongamia cake, pressmud and RDF application also gave on par dry tuberous root yield. Forskolin content (1.037 %) was recorded in pressmud equivalent to 100 per cent RDN treatment. As per as fresh and dry tuberous root yield concerned, significantly higher fresh (26.59%) and dry tuberous root (15.65%) yield, higher N, P and K uptake in leaf, tubers, total uptake of N (169.89 kg/ha) were obtained with the application of FYM equivalent to 100 per cent RDN. Whereas, K uptake by stem, total uptake of K and highest available N were also observed in the same treatment. Hence, alternatively in the absence of FYM, the above organic source of nitrogen can be considered for getting optimum yield in medicinal coleus under irrigated condition of Northern Dry Zone of Karnataka.
Key words :
Growth and yield attributes, Medicinal coleus, Organic manures.