Evaluation of tall wheat (Triticum aestivum L.) for dual purpose under cutting, nitrogen and weed management practices
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Date
2018
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CCSHAU
Abstract
Field experiment entitled “Evaluation of tall wheat (Triticum aestivum L.) for dual purpose
under cutting, nitrogen and weed management practices” was carried out at Research area of
Department of Agronomy, CCS HAU Hisar (Haryana) during the Rabi seasons of 2015-16 and
2016-17. Study was divided into two field experiments and both were laid out in a RBD with 3
replications. In first experiment, 18 treatments viz. no cut with 60 and 75 kg/ha N applied at 1/2
at sowing + 1/2 at first irrigation (T1 and T2), cut at 5 and 10 cm stubble height with 60and 75
kg/ha N scheduled with four different ways i.e 1/2 at sowing + 1/2 at first irrigation, 1/2 at
sowing + 1/2 after cut, 1/3 at sowing + 2/3 after cut and 1/3 at sowing + 1/3 at first irrigation +
1/3 after cut (T3 to T18) while in second experiment, 9 treatments viz. pendimethalin 1500 g/ha
PRE alone (T1) and followed by (fb) 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 POE at 2 WAC (T5 to T7), weed free
(T8) and weedy check (T9) were included. In experiment first, among cutting and nitrogen
management treatments highest effective tillers, grain yield, net return and B: C ratio were
observed under the treatment 75 kg N/ha applied at sowing1/3 + after cut2/3 with cut 55 DAS at 10
cm SH followed by 75 kg N/ha applied at sowing1/3 + after cut2/3 with cut 55 DAS at 5 cm SH and
60 kg N/ha applied at sowing1/3 + after cut2/3 with cut 55 DAS at 10 cm SH and both were
statistically at par with each other and higher than rest of the treatments while no cut treatment
resulted in significantly higher biological and straw yield as compared to all cutting treatments
during both years of experimentation. No cut and cut treatments with 75 kg/ha N resulted in
significantly higher grain yield as compared to 60 kg/ha N and significantly higher grain yield
was produced under cut at 10 cm SH than cut at 5 cm SH.
In second experiment, after cutting, total weed density and dry weight 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, as compared to 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 biological, grain,
straw 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.
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