Weed Management in Elephant Foot Yam (Amorphophallus paeoniifolius)
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Date
2023-02-05
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CSK HPKV, Palampur
Abstract
An experiment on Weed management in elephant foot yam (Amorphophallus
paeoniifolius) was conducted at Experimental Farm of Research Sub Station of CSK,
Himachal Pradesh Krishi Vishwavidyalaya at Berthin of Bilaspur district during
Kharif 2021. The experiment was laid out by planting elephant foot yam variety
Palam Zimikand-1 in Randomized Complete Block Design with three replications.
The experiment comprising of eight weed management treatments viz., Pendimethalin
30EC @1.0 kg a.i/ha as pre emergence, Pendimethalin 30EC @1.0 kg a.i/ha as pre
emergence + HW at 60 DAP, Incorporation of cowpea as green manure after 45-60
days of planting, Plastic mulch (biodegradable double shaded), Dry mulch @ 5
tonnes/ha, HW at 30 and 60 DAP, Weed free and Control (No weeding). The
predominating weed species recorded during experimentation was Cyperus rotundus.
Among different weed management treatments, use of biodegradable double shaded
plastic mulch was the best treatment with respect to girth of pseudo stem, canopy
spread, leaf area index, corm yield, yield and quality attributes, gross returns, net
returns and benefit cost ratio and it was followed by weed free and HW at 30 and 60
days after planting treatments. Among herbicidal treatments, pendimethalin 30EC
@1.0 kg a.i/ha as pre emergence + HW at 60 DAP (T2) is better over pendimethalin
30EC @1.0 kg a.i/ha as pre emergence (T1), whereas unweeded treatment was lowest
for most of the traits due to more crop-weed-competition. The use of biodegradable
double shaded plastic mulch is the best treatment for weed management in elephant
foot yam for achieving higher productivity and profitability under low hill conditions
of Himachal Pradesh.