Abstract
Field experimentswere conducted at Punjab Agricultural University, Ludhianaand Cotton Research Station, Abohar during the khartf seasons of 1989 and 1990. Predominant weeds were Trianthema portulacastrum (40.7 - 91.S %) at Ludhiana and Eleusine indica (33.6 - 60.9%) at Abopar. Ail treatments significantly reduced the population and dry matter of weeds and increased the seed cotton yield. At Ludhiana, total weed population recorded 30 days after sowing (DAS) was reduced from 47.5 to 20.6, 12.9 and 13.2 plants/0.25 m2 and that of T. portulacastrum from 44.0 to 14.5, 9.4 and 7.8 plants/0.25 m2 with pre-emergence application of 0.75, 1.50 and 2.25 kg pendimethalin/ha, respectively. With the same treatments, reduction in weed density recorded 30 DAS at Abohar was from 61.8 to 16.8, 13.0 and 9.2 plants/m2 in total weeds, from 6.8 to 4.6, 3.3 and 1.9/0.25 m2in T. portulacastrum, and from 54.0 to 14.0, 13.1 and 9.2, 0.25 m2 in E. indica, respectively. Mean dry matter of weeds recorded 60 DAS was reduced from 3035 kg/ha in unweeded check to a range of 342–1262 kg/ha with different combinations of pendimethalin. Consequently, seed cotton yield increased from 1411 kg/ha in unweeded check to 2061, 2129 and 1991 kg/ha with different combinations of 0.75, 1.50 and 2.25 kg pendimethalin/ha thus registering an increase of 46, 51 and 41 per cent, respectively. In conclusion, it can be stated that pre-mergence application of pendimethalin @ 1.5 kg/ha followed by one hoeing 30 DAS is effective for the control of annual broad leaf and grassy weeds like T. portulacastrum and E. indica in American cotton.
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Claims 9
Claim · model-written summary
Trianthema portulacastrum predominated at Ludhiana.
- Taxon
- Cotton
Gossypium hirsutumt0 - Interactor
- Trianthema portulacastrum
Trianthema portulacastrume0weed - Outcome
- Predominant weedse0
- Setting
- Ludhianae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“Predominant weeds were Trianthema portulacastrum (40.7 - 91.S %) at Ludhiana”
Claim · model-written summary
Eleusine indica predominated at Abohar.
- Taxon
- CottonGossypium hirsutumt0
- Interactor
- Eleusine indica
Eleusine indicae0weed - Outcome
- Eleusine indica (33.6 - 60.9%)e0
- Setting
- Abopare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“Eleusine indica (33.6 - 60.9%) at Abopar”
Claim · model-written summary
All treatments reduced weed population and dry matter significantly.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Ail treatmentse0
- Outcome
- population and dry matter of weedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“Ail treatments significantly reduced the population and dry matter of weeds”
Claim · model-written summary
All treatments increased seed cotton yield significantly.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Ail treatmentse0
- Outcome
- seed cotton yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“Ail treatments significantly reduced the population and dry matter of weeds and increased the seed cotton yield”
Claim · model-written summary
Pendimethalin treatments reduced total weed population at Ludhiana.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- total weed populatione0
- Direction
- reducede0
- Qualifier
- 30 days after sowing (DAS)e0
Not reportedTreatmentComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“total weed population recorded 30 days after sowing (DAS) was reduced from 47.5 to 20.6, 12.9 and 13.2 plants/0.25 m2”
Claim · model-written summary
Pendimethalin treatments reduced T. portulacastrum density at Ludhiana.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- pre-emergence application of 0.75, 1.50 and 2.25 kg pendimethalin/hae0
- Interactor
- T. portulacastrumTrianthema portulacastrume0weed
- Outcome
- T. portulacastrume0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“that of T. portulacastrum from 44.0 to 14.5, 9.4 and 7.8 plants/0.25 m2 with pre-emergence application of 0.75, 1.50 and 2.25 kg pendimethalin/ha”
Claim · model-written summary
Pendimethalin combinations reduced weed dry matter at 60 DAS.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- different combinations of pendimethaline0
- Outcome
- dry matter of weedse0
- Direction
- reducede0
- Value
- 342–1262 kg/hae0
- Comparator
- unweeded checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“Mean dry matter of weeds recorded 60 DAS was reduced from 3035 kg/ha in unweeded check to a range of 342–1262 kg/ha with different combinations of pendimethalin”
Claim · model-written summary
Pendimethalin combinations increased seed cotton yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- different combinations of 0.75, 1.50 and 2.25 kg pendimethalin/hae0
- Outcome
- seed cotton yielde0
- Direction
- increasede0
- Comparator
- unweeded checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“seed cotton yield increased from 1411 kg/ha in unweeded check to 2061, 2129 and 1991 kg/ha with different combinations of 0.75, 1.50 and 2.25 kg pendimethalin/ha thus registering an increase of 46, 51 and 41 per cent”
Claim · model-written summary
The authors recommend 1.5 kg/ha pendimethalin followed by hoeing for annual weed control in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- pre-mergence application of pendimethalin @ 1.5 kg/ha followed by one hoeing 30 DASe0
- Outcome
- control of annual broad leaf and grassy weedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton (Gossypium hirsutum L.)”
e0“pre-mergence application of pendimethalin @ 1.5 kg/ha followed by one hoeing 30 DAS is effective for the control of annual broad leaf and grassy weeds like T. portulacastrum and E. indica in American cotton”
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1 paper in the same direction as this paper
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herbicide · Trianthema portulacastrum · Gossypium hirsutum (cotton)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.