RE-SPROUTING ABILITY OF ALIEN WEED – Chromolaena odorata (L.) R.M. KING AND H. ROBINSON

Publication Date : 25/07/2016


Author(s) :

Kumar Naik, A. H , Basavaraja Naik, T. , Umamaheswarappa, P.


Volume/Issue :
Volume 2
,
Issue 7
(07 - 2016)



Abstract :

Chromolaena odorata is fast growing woody and much branched shrub attaining a height of three to eight meter and suppress young seedlings that are slow in growth and deprive them of a major share of nutrients, moisture and space due to its efficient tap root system and causing nuisance in farming community. A field study was planned under this content at Main Research Station, Hebbal, University of Agricultural Sciences, Bengaluru. On both existing and de –topped Chromolaena, application of glyphosate and paraquat sprayed plots, re -sprouting of Chromolaena was not observed at all concentrations. Whereas, re -sprouting of Chromolaena was observed in 2, 4-D Na salt sprayed plots particularly from 70th and 60th day onwards, It was to an extent of 8 to 13% and 5 to 10% by 90th day after spray at all concentrations respectively of Chromolaena with existing and de –topped plants. Application of Chlorimuron ethyl 10WP + metsulfuron methyl 10 WP caused slight initial sprouting up to 40th day and subsequently no growth was observed at all concentrations in existing plants. Whereas, in sprouted plants at all doses was able to cause 3 to 8% re-sprouting in Chromolaena on 90th day after spray.


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