Effect of Integrated Weed Management Practices on Plant Height, Number of Tillers in Turmeric During kharif Season  

Sathiyavani Erulan , N. K. Prabhakaran
Department of Agronomy, Tamil Nadu Agricultural University, Tamil Nadu, India.
Author    Correspondence author
International Journal of Horticulture, 2015, Vol. 5, No. 2   doi: 10.5376//ijh.2015.05.0002
Received: 23 Jan., 2015    Accepted: 05 Feb., 2015    Published: 06 Feb., 2015
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Sathiyavani and Prabhakaran, 2015, Effect of Integrated Weed Management Practices on Plant Height, Number of Tillers in Turmeric During kharif Season, International Journal of Horticulture, Vol.5, No.2, 1-8

Abstract

Field experiments were conducted at the Agricultural Research Station, Bhavanisagar of Tamil Nadu Agricultural University, during kharif season of 2012 to evaluate the integrated weed management with pre and post emergence herbicides in turmeric. The experiments were laid out in Randomized block design and replicated thrice. The treatments comprised of different weed management practices wherein PE herbicides viz., metribuzin 0.7 kg ha‑1, pendimethalin 1.0 kg ha‑1 and atrazine 0.75 kg ha‑1 followed by either POE  fenoxaprop 67 g ha‑1 + metsulfuron 4 g ha‑1 (Tank mix) on 45 DAP or  HW on 45 and 75 DAP or straw mulch  10 t ha‑1 on 10 DAP + HW on 75 DAP, all PE oxyfluorfen  0.30 kg ha‑1, PE oxadiargyl 0.25 kg ha‑1, POE glyphosate 1.03 kg ha‑1 and 1.54 kg ha‑1 on 25 DAP followed by HW on 45 and 75 DAP, HW on25, 45 and 75 DAP  and unweeded check were imposed. In both the experiments, observations were recorded on plant growth parameters like plant height and plant dry matter production and number of tillers were recorded in kharif season 2012. In the experimental fields, Echinochloa colonum and Digitaria bicornis among grasses, Cyperus rotundus in sedge, Eclipta prostrata and Boerhaavia diffusa under broad leaved weed were the predominant weeds. The grasses constituted the major proportion of the weed flora at all the growth stages of the crop. Slight to moderate phytotoxicity symptoms in turmeric were observed in glyphosate 1.03 and 1.54 kg ha-1 at the time of application of herbicides, however the crop recovered later. Among the weed management treatments imposed, PE metribuzin 0.7 kg ha­-­1 + HW on 45 and 75 DAP registered higher uptake of nutrient by crop due to effective control of weeds which enhanced the availability of nutrients to crop leading to positive results in respective of growth parameters like plant height, dry matter production and number of tillers plant-1, during 2012.

Keywords
Turmeric; Integrated weed management; Plant height; Dry matter production and Number of Tillers
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