Spatial variation in allelopathic inhibition by Ageratina adenophora on growth and yield of two traditional millet crops

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Khatri, Kavita, Negi, Bhawna, Bargali, Kiran, Bargali, Surendra Singh


Research Articles | Published: 03 March, 2022

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Website:www.vegetosindia.org
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-022-00353-y
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Keywords: Allelopathy, Growth, Harvest index, Inhibition, Millets, Yield


Abstract


This study investigated the effects of Ageratina adenophora Sprengel (King and Robinson) on the growth and grain yield of two millet crops viz. finger millet (Eleusine coracana) along with the red and white variety of barnyard millet (Echinochloa frumentacea). Plants of selected millet crops growing at three distances (0, 1 and 5 m) from A. adenophora were harvested at mature stage and analysed for plant height, dry mass and grain yield. Significant inhibitory effects were recorded on all measured variables including shoot and root length and dry mass, panicle size and grain yield. In general, red barnyard millet was found to be more sensitive to allelopathic effects of A. adenophora as compared to white barnyard and finger millet. Distance from A. adenophora strongly affected the allelopathic effects; generally decreasing with increasing distance. Grain yield was the most inhibited variable for both the barnyard varieties, and reductions of 72 and 83% were observed in white and red barnyard millet, respectively. While finger millet showed maximum inhibition in plant biomass (18%). Harvest index showed maximum inhibition (57%) in red barnyard followed by white barnyard (15%) millet while finger millet remained unaffected. This study concluded that both finger and barnyard millet are sensitive to A. adenophora invasion and observed growth reductions in finger and barnyard millet may be due to the allelochemicals present in the A. adenophora plants.

Allelopathy, Growth, Harvest index, Inhibition, Millets, Yield


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Acknowledgements


The authors are grateful to the Head, Department of Botany, D.S.B. Campus, Kumaun University, Nainital, Uttarakhand for providing all sorts of facilities. The authors are also thankful to the Department of Science and Technology (DST)-New Delhi, (DST-SERB/CRG/2019/004139), Government of India, for the financial assistance. We are specially thankful to Mr. Surendra Singh Khatri for his help during sample collection. The authors are highly thankful to the editor and all the three reviewers for their critical look and valuable suggestions.


Author Information


Khatri, Kavita
Department of Botany, DSB Campus, Kumaun University, Nainital, India
kabitakhatri000@gmail.com
Negi, Bhawna
Department of Botany, DSB Campus, Kumaun University, Nainital, India
negibhawna20@gmail.com

Bargali, Kiran
Department of Botany, DSB Campus, Kumaun University, Nainital, India

kiranbargali@yahoo.co.in Bargali, Surendra Singh
Department of Botany, DSB Campus, Kumaun University, Nainital, India

surendrakiran@rediffmail.com