Abstract
Field experiment was conducted during three consecutive rabi season of 2013-14, 14-15 and 2015-16 at Research cum Instructional Farm of Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh to find out the bio-efficacy of herbicides for controlling weeds in linseed in comparison to hand weeding twice at 20 and 40 days after sowing. The most predominant weed flora observed in the experimental plots were Medicago denticulata, Convolvulus arvensis, Parthenium hysterophorus and other weeds. The nine weed management treatments consisted of T1: Weedy check, T2: Hand weeding twice at 20 and 40 DAS, T3: Pendimethalin 30 EC @ 1 kg a.i. ha-1 (PE), T4: Pendimethalin 30 EC + Imaz 2 EC @ 0.75 kg a.i. ha-1 (PE), T5: Pendimethalin 30 EC + Imaz 2 EC @ 1.00 kg a.i. ha-1 (PE), T6: Isoproturon @ 1 kg a.i. ha-1 (PoE), T7: Clodinafop @ 60 g. a.i. ha-1 (PoE), T8: Imazethapyr 10 EC @ 75 g a.i. ha-1 (PoE), T9: Imazethapyr 10 EC @ 100 g a.i. ha-1 (PoE) with the variety of RLC-92. The experiment was laid out in randomized block design with thrice replications. The lowest weed density and dry matter of total weeds at harvest were observed with twice hand weeding treatment (T2), however among herbicides, the lowest value was observed with the application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6). The growth attributes, seed yield of linseed and weed control efficiency (at harvest) were found highest with twice hand weeding treatment (T2), however among herbicides, application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6) recorded the higher values. In case of B:C ratio, the application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6) registered the highest value (2.03) among all weed management practices. Hence the alone application of Isoproturon @ 1 kg a.i. ha-1 as PoE was found most economical herbicide under different weed management practices for linseed in Vertisols of Chhattisgarh plains condition.
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Claims 7
Claim · model-written summary
Medicago denticulata, Convolvulus arvensis and Parthenium hysterophorus were predominant weeds.
Verbatim
e0“The most predominant weed flora observed in the experimental plots were Medicago denticulata, Convolvulus arvensis, Parthenium hysterophorus and other weeds”
t0“linseed”
Claim · model-written summary
Twice hand weeding yielded the lowest total weed density and dry matter at harvest.
- Taxon
- linseedt0
- Treatment
- twice hand weeding treatment (T2)e0
- Interactor
- weedse0weed
- Outcome
- weed density and dry matter of total weedse0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“The lowest weed density and dry matter of total weeds at harvest were observed with twice hand weeding treatment (T2)”
t0“linseed”
Claim · model-written summary
Among herbicides, isoproturon gave the lowest total weed density and dry matter.
Verbatim
e0“The lowest weed density and dry matter of total weeds at harvest were observed with twice hand weeding treatment (T2), however among herbicides, the lowest value was observed with the application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6)”
t0“linseed”
Claim · model-written summary
Twice hand weeding gave the highest growth attributes, seed yield and weed control efficiency.
- Taxon
- linseede0
- Treatment
- twice hand weeding treatment (T2)e0
- Outcome
- growth attributes, seed yield of linseed and weed control efficiencye0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The growth attributes, seed yield of linseed and weed control efficiency (at harvest) were found highest with twice hand weeding treatment (T2)”
Claim · model-written summary
Among herbicides, isoproturon gave higher growth, yield and weed control efficiency.
Verbatim
e0“among herbicides, application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6) recorded the higher values”
t0“linseed”
Claim · model-written summary
Isoproturon gave the highest benefit-cost ratio, 2.03.
Verbatim
e0“In case of B:C ratio, the application of Isoproturon @ 1 kg a.i. ha-1 as PoE (T6) registered the highest value (2.03) among all weed management practices”
t0“linseed”
Claim · model-written summary
The authors recommended isoproturon as the most economical herbicide for linseed in local Vertisols.
Verbatim
e0“the alone application of Isoproturon @ 1 kg a.i. ha-1 as PoE was found most economical herbicide under different weed management practices for linseed in Vertisols of Chhattisgarh plains condition”
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