EFFICACY OF DIFFERENT HERBICIDES AGAINST WEEDS IN DUAL PURPOSE WHEAT AND RESIDUAL EFFECT OF PENDIMETHALIN IN WHEAT FODDER
MEENAKSHI SANGWAN*, JAGDEV SINGH AND V. S. HOODA
Department of Agronomy,
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : meenakshisangwan1991@gmail.com)
(Received : 8 January 2018; Accepted : 12 February 2018)

SUMMARY

A Field experiment was carried out at Research area of Department of Agronomy, CCS HAU Hisar (Haryana) during the Rabi seasons of 2015-16 and 2016-17. In present experiment nine treatment combinations were used viz. pendimethalin 1500 g/ha PRE alone (T1) and followed by (fb) post emergence (POE) application of pinoxaden 50 g/ha + metsulfuron 4 g/ha (T2), sulfosulfuron + metsulfuron (30+2) g/ha (T3) and clodinafop + metsulfuron (60+4) g/ha (T4) at 2 week after cutting (WAC), alone application of pinoxaden 50 g/ha + metsulfuron 4 g/ha (T5), sulfosulfuron + metsulfuron (30+2) g/ha (T6) and clodinafop + metsulfuron (60+4) g/ha (T7) at 2 WAC, weed free (T8) and weedy check (T9). After cutting of wheat for fodder, total weed density and dry weight at harvest stage were significantly reduced under sequential application of pendimethalin 1500 g/ha PRE fb pinoxaden + metsulfuron (50+4) 2 WAC (week after cutting at 55 DAS), pendimethalin 1500 g/ha PRE fb sulfosulfuron+ metsulfuron (30+2) 2 WAC and pendimethalin 1500 g/ha PRE fb clodinafop + metsulfuron (60+4) 2 WAC, but weeds under alone application of post emergence pinoxaden + metsulfuron (50+4) 2 WAC, sulfosulfuron+ metsulfuron (30+2) 2 WAC, clodinafop + metsulfuron (60+4) 2 WAC. Among herbicidal treatments, significantly higher weed control efficiency, grain yield and B: C ratio was observed under sequential application of herbicides which were significantly higher than weedy check and alone pre and post emergence application of herbicides during both the years of study.

Key words: Dual purpose wheat, cutting, fodder, herbicide mixture, sequential application

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