Integrated weed management in poplar (Populus deltoides)turmeric (Curcuma longa) based agroforestry system in Punjab

NAVNEET KAUR; R.I.S. GILL; M.S. BHULLAR

doi:10.59797/ija.v61i2.4364

Authors

NAVNEET KAUR
R.I.S. GILL
M.S. BHULLAR

DOI:

https://doi.org/10.59797/ija.v61i2.4364

Keywords:

Agroforestry, Herbicides, Poplar, Straw mulch, Turmeric, Weeds

Abstract

A field study was conducted during 201314 and 201415 to find out the effective and economical approach for weed control in turmeric (Curcuma longa L.) grown under poplar (Populus deltoides Bartr.) block plantation which was established at 4 m 3 m spacing in January 2012. Three pre-emergence herbicides (pendimethalin 0.75 and 1.0 kg/ha, oxyfluorfen 0.176 and 0.235 kg/ha, atrazine 0.563 and 0.75 kg/ha) were integrated with 9 t/ha paddy straw mulching during both the years except with atrazine during 201415. Integrated use of oxyfluorfen 0.235 kg/ha or pendimethalin 1.0 kg/ha with straw mulch provided similar level of weed control to that of 3 hand- weedings and increased rhizome yield of turmeric by 3642% over weedy check. Pendimethalin 1.0 kg/ha + straw mulch recorded higher benefit: cost ratio than hand-weedings. Atrazine + straw mulch recorded effective control of weeds, however it killed the poplar trees at both the levels; hence not safe for use in turmeric grown in poplar plan- tations. Treatment combinations of pendimethalin and oxyfluorfen with straw mulch were found to be safe for weed management in poplar-turmeric based agroforestry system.

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