Abstract
A field study was conducted at research field of Spices Research Sub-Centre (SRSC), Faridpur, Bangladesh to find out the efficacy of weed management practices on the growth, yield, quality and economics of onion with the variety BARI Piaz-6. Thirteen treatments such as: T1-control as check (no weeding), T2-weed free, T3-one hand weeding (HW) at 45 days after transplanting (DAT), T4-two HW at 25 and 45 DAT, T5-three HW at 25, 45 and 65 DAT, T6-pre-emergence (PE) spray of pendimethalin 33 EC @ 330g a.i/litre + one HW at 45 DAT, T7- PE spray of pendimethalin 33 EC @ 330g a.i/litre + two HW at 45 and 65 DAT, T8- post emergence (POE) spray of pendimethalin 33 EC @ 330g a.i/litre at 25 DAT + one HW at 65 DAT, T9- PE spray of oxyfluorfen 23.5 EC @ 235g a.i./litre + one HW at 45 DAT, T10- PE spray of oxyfluorfen 23.5 EC @ 235g a.i./litre + two HW at 45 & 65 DAT, T11- POE spray of oxyfluorfen 23.5 EC @ 235g a.i./litre at 25 DAT + one HW at 65 DAT, T12- PE spray of pendimethalin 33 EC @ 330g a.i/litre + POE spray of oxyfluorfen 23.5 EC @ 235g a.i./litre at 45 DAT + one HW at 65 DAT and T13- PE spray of oxyfluorfen 23.5 EC @ 235g a.i./litre + POE spray of pendimethalin 33 EC @ 330g a.i/litre at 45 DAT + one HW at 65 DAT were compared by randomized complete block design with three replications. The study revealed that the weed management treatments under the study significantly influenced all parameters except total soluble solid content of onion bulb. Weed density had reverse effect on growth, development and yield of onion. Among the weed’s infestation, Cyperus rotundus (55-60%), Echinochloa crusgalli (10-15%) and Chenopodium album (8-10%) were predominant. The highest weed density (137.25 weeds/m2) were recorded from the T1. The lowest weed density (15.24 weeds/m2) were observed from T13. The T3 had the least weed control efficacy (23.56%). The maximum fresh yield (19.49 t/ha) of onion bulb were obtained from T2 followed by T13 (19.31 t/ha). The highest benefit-cost ratio (2.19) was calculated from the T13 closely followed by T12 (2.18). From this study it was concluded that Pre-emergence application (PE) application of oxyflourfen or pendimethalin + post-emergence (POE) application of oxyflourfen or pendimethalin at 45 DAT (days after transplanting) + once HW (hand weeding) at 65 DAT and also PE of oxyflourfen or pendimethalin + twice HW at 45 & 65 DAT exhibited good performance to control weeds in onion field.
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Claims 14
Claim · model-written summary
Weed management treatments did not significantly influence total soluble solid content of onion bulb.
- Taxon
- onion (Allium cepa L.)
Allium cepat0 - Treatment
- weed management treatmentse0
- Outcome
- total soluble solid content of onion bulbe0
- Direction
- excepte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“The study revealed that the weed management treatments under the study significantly influenced all parameters except total soluble solid content of onion bulb”
Claim · model-written summary
Weed management treatments significantly influenced all onion parameters.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- weed management treatmentse0
- Outcome
- all parameterse0
- Direction
- significantly influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e0“The study revealed that the weed management treatments under the study significantly influenced all parameters except total soluble solid content of onion bulb”
Claim · model-written summary
Weed density had a reverse effect on growth, development and yield of onion.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- Weed densitye1
- Outcome
- growth, development and yielde1
- Direction
- reverse effecte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e1“Weed density had reverse effect on growth, development and yield of onion”
Claim · model-written summary
Cyperus rotundus was a predominant weed with 55-60% infestation in onion.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Interactor
- Cyperus rotundus
Cyperus rotunduse2weed - Outcome
- infestatione2
- Value
- 55-60%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e2“Among the weed’s infestation, Cyperus rotundus (55-60%), Echinochloa crusgalli (10-15%) and Chenopodium album (8-10%) were predominant”
Claim · model-written summary
Echinochloa crusgalli was a predominant weed with 10-15% infestation in onion.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Interactor
- Echinochloa crusgalli
Echinochloa crus-gallie2weed - Outcome
- infestatione2
- Value
- 10-15%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e2“Among the weed’s infestation, Cyperus rotundus (55-60%), Echinochloa crusgalli (10-15%) and Chenopodium album (8-10%) were predominant”
Claim · model-written summary
Chenopodium album was a predominant weed with 8-10% infestation in onion.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Interactor
- Chenopodium album
Chenopodium albume2weed - Outcome
- infestatione2
- Value
- 8-10%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e2“Among the weed’s infestation, Cyperus rotundus (55-60%), Echinochloa crusgalli (10-15%) and Chenopodium album (8-10%) were predominant”
Claim · model-written summary
The control with no weeding had the highest weed density, 137.25 weeds/m2.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- control as check (no weeding)e4
- Outcome
- weed densitye3
- Direction
- higheste3
- Value
- 137.25 weeds/m2e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e3“The highest weed density (137.25 weeds/m2) were recorded from the T1”
e4“T1-control as check (no weeding)”
Claim · model-written summary
T13 had the lowest weed density, 15.24 weeds/m2.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- T13e4
- Outcome
- weed densitye4
- Direction
- loweste4
- Value
- 15.24 weeds/m2e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e4“The lowest weed density (15.24 weeds/m2) were observed from T13”
Claim · model-written summary
T3 had the least weed control efficacy, 23.56%.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- one hand weeding (HW) at 45 days after transplanting (DAT)e4
- Outcome
- weed control efficacye5
- Direction
- leaste5
- Value
- 23.56%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e5“The T3 had the least weed control efficacy (23.56%)”
e4“T3-one hand weeding (HW) at 45 days after transplanting (DAT)”
Claim · model-written summary
T2 gave the maximum fresh onion bulb yield, 19.49 t/ha.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- T2e6
- Outcome
- fresh yielde6
- Direction
- maximume6
- Value
- 19.49 t/hae6
- Comparator
- T13e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e6“The maximum fresh yield (19.49 t/ha) of onion bulb were obtained from T2 followed by T13 (19.31 t/ha)”
Claim · model-written summary
T13 gave a fresh onion bulb yield of 19.31 t/ha, following T2.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- T13e6
- Outcome
- fresh yielde6
- Value
- 19.31 t/hae6
- Comparator
- T2e6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e6“The maximum fresh yield (19.49 t/ha) of onion bulb were obtained from T2 followed by T13 (19.31 t/ha)”
Claim · model-written summary
T13 had the highest benefit-cost ratio, 2.19.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- T13e7
- Outcome
- benefit-cost ratioe7
- Direction
- higheste7
- Value
- 2.19e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e7“The highest benefit-cost ratio (2.19) was calculated from the T13 closely followed by T12 (2.18)”
Claim · model-written summary
T12 had a benefit-cost ratio of 2.18, closely following T13.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Treatment
- T12e7
- Outcome
- benefit-cost ratioe7
- Value
- 2.18e7
- Comparator
- T13e7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e7“The highest benefit-cost ratio (2.19) was calculated from the T13 closely followed by T12 (2.18)”
Claim · model-written summary
The authors recommend pre- or post-emergence oxyfluorfen or pendimethalin with hand weeding for good weed control in onion.
- Taxon
- onion (Allium cepa L.)Allium cepat0
- Outcome
- good performance to control weedse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion (Allium cepa L.)”
e3“exhibited good performance to control weeds in onion field”
The same questions in other papers
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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.