Management of Parthenium hysterophorus L. in wastelands of Himachal Pradesh
Author(s):
S.S. Rana, Pankaj Chopra, Suresh Kumar, Ramesh, Neelam Sharma
Keywords:
Parthenium hysterophorus, wastelands, management, herbicides
Abstract
Thirteen treatments viz., metsulfuron methyl (0.005 and 0.01%), 2, 4-DEE (0.30 and 0.20%), atrazine (0.20 and 0.30%), metribuzin (0.25 and 0.50%) and glyphosate (0.50 and 0.75%) each at two doses and manual cutting, uprooting and untreated check were evaluated for the control of Parthenium hysterophorus in a wasteland ecosystem of Himachal Pradesh. At the time of application, plants of Parthenium were 22.3-55.1 cm in height in the first year and 22.8-47.8 cm in the second year. Glyphosate 0.5 and 0.75%, metribuzin 0.25 and 0.50%, metsulfuron methyl 0.005 and 0.01%, 2, 4 -D 0.2 and 0.3% and atrazine 0.2 and 0.3% applied before flowering were effective to control the previous flush of Parthenium as compared to other treatments. All herbicides were effective to control Parthenium upto four months after application with 100% kill. The herbicidal treatments were also superior to manual treatments in reducing the count and dry weight and height of Parthenium subsequently upto 7 months after treatment. Though all the herbicidal treatments resulted in significantly lower density and dry weight of Parthenium as compared to other weed control treatments up to four months after treatment but metribuzin, 2, 4-D, metsulfuron methyl and atrazine were effective without any phytotoxic effects on grasses. In hot summer months, the heat stress killed the populations but, with the onset of monsoon the weed again emerged. The manual weeding treatment resulted in lower weed density and dry weight at initial stages only but, uprooting was superior to the cutting treatment. With the effective management of Parthenium the population of other vegetation (Ageratum conyzoides, Bidens pilosa and local grasses) increased significantly especially in the glyphosate treated plots.
Article Details
Unique Paper ID: 147049

Publication Volume & Issue: Volume 5, Issue 3

Page(s): 215 - 219
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Last Date 25 September 2019


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