Abstract
A field experiment were conducted for two years at Agricultural Research Station, Bhavanisagar of Tamil Nadu Agricultural University, during kharif season of 2009 and 2010 to evaluate the new formulation of oxyfluorfen (23.5% EC) on weed control in onion. Weeds constitute one of the biggest problems in agriculture that not only reduce the yield and quality of onion but also utilize essential nutrients. Hence, weed control is essential for increasing onion production. Based on two years field experimentation, it was found that pre-emergence application of oxyfluorfen (23.5% EC) at400 g.ha-1 gave significantly lower total weed density, weed dry weight and higher weed control efficiency at all the intervals. Application of new formulation of oxyfluorfen (23.5% EC) at200 g.ha-1 as pre-emergence herbicide can keep the weed density and dry weight below the economic threshold level and increase the bulb weight (42.56 and43.87 g) and yield (15940 and15610 kg.ha-1) in onion. Unweeded control accounted for lower bulb yield which inturn reflected through higher weed index of 60.6 and 56.1 per cent, respectively during both the years, due to heavy competition of weeds for nutrients, space and light.
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Claims 7
Claim · model-written summary
Pre emergence oxyfluorfen at 400 g.ha-1 significantly reduced weed density and weed dry weight.
- Taxon
- Onion
Allium cepat0 - Treatment
- pre-emergence application of oxyfluorfen (23.5% EC) at400 g.ha-1e0
- Interactor
- weedse1weed
- Outcome
- total weed density, weed dry weighte0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of oxyfluorfen (23.5% EC) at400 g.ha-1 gave significantly lower total weed density, weed dry weight and higher weed control efficiency at all the intervals.”
t0“Onion”
e1“due to heavy competition of weeds for nutrients, space and light”
Claim · model-written summary
The same application increased weed control efficiency at all intervals.
- Taxon
- OnionAllium cepat0
- Treatment
- pre-emergence application of oxyfluorfen (23.5% EC) at400 g.ha-1e0
- Outcome
- weed control efficiencye0
- Direction
- highere0
- Qualifier
- at all the intervalse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of oxyfluorfen (23.5% EC) at400 g.ha-1 gave significantly lower total weed density, weed dry weight and higher weed control efficiency at all the intervals.”
t0“Onion”
Claim · model-written summary
Pre emergence oxyfluorfen at 200 g.ha-1 kept weed density and dry weight below the economic threshold.
- Taxon
- OnionAllium cepat0
- Treatment
- oxyfluorfen (23.5% EC) at200 g.ha-1e0
- Outcome
- weed density and dry weighte0
- Direction
- belowe0
- Comparator
- economic threshold levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of new formulation of oxyfluorfen (23.5% EC) at200 g.ha-1 as pre-emergence herbicide can keep the weed density and dry weight below the economic threshold level”
t0“Onion”
Claim · model-written summary
Oxyfluorfen at 200 g.ha-1 increased onion bulb weight to 42.56 and43.87 g.
- Taxon
- OnionAllium cepat0
- Outcome
- bulb weighte0
- Direction
- increasee0
- Value
- 42.56 and43.87 ge0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase the bulb weight (42.56 and43.87 g) and yield (15940 and15610 kg.ha-1) in onion”
t0“Onion”
Claim · model-written summary
Oxyfluorfen at 200 g.ha-1 increased onion yield to 15940 and15610 kg.ha-1.
- Taxon
- OnionAllium cepat0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 15940 and15610 kg.ha-1e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase the bulb weight (42.56 and43.87 g) and yield (15940 and15610 kg.ha-1) in onion”
t0“Onion”
Claim · model-written summary
The unweeded control had lower bulb yield.
- Taxon
- OnionAllium cepat0
- Treatment
- Unweeded controle0
- Outcome
- bulb yielde0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Unweeded control accounted for lower bulb yield which inturn reflected through higher weed index of 60.6 and 56.1 per cent, respectively during both the years, due to heavy competition of weeds for nutrients, space and light.”
t0“Onion”
Claim · model-written summary
The unweeded control had weed indices of 60.6 and 56.1 per cent across the two years.
- Taxon
- OnionAllium cepat0
- Outcome
- weed indexe0
- Direction
- highere0
- Value
- 60.6 and 56.1 per cente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Unweeded control accounted for lower bulb yield which inturn reflected through higher weed index of 60.6 and 56.1 per cent, respectively during both the years, due to heavy competition of weeds for nutrients, space and light.”
t0“Onion”
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See all 74 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.