Abstract
A field experiment was conducted to investigate the allelopathic effects of sorghum, sunflower, brassica and rice combined with low rates of pendimethalin for weed management in canola (Brassica napus L.) field. Crop water extracts at 15 L ha-1 each in combination with pendimethalin at 400 and 600 g active ingredient (a.i.) ha-1 were sprayed immediately after sowing. Full dose of pendimethalin 1200 g a.i ha-1 was used as standard. A weedy check was also maintained for comparison. Sorghum and rice water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 showed maximum (67.58 & 66.21%) reduction in total weed density at 40 and 60 days after sowing (DAS), respectively. All the treatments offered more than 80% reduction in total weed dry weight over control at 40 DAS, while 44.93 to 63.99% reduction in total weed dry weight over control at 60 DAS was recorded in all the treatments. The plots treated with sorghum and sunflower water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 pendimethalin recorded maximum seed yield (2.604 Mg ha-1), which was 39.99% greater as compared to control. Herbicide dose may be reduced by 50-67% in combination with allelopathic water extracts for effective weed control and higher yields in canola field.
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Claims 7
Claim · model-written summary
Sorghum extract with pendimethalin reduced weed density 67.58% at 40 days.
- Taxon
- canola
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Brassica napus var. napust0 - Treatment
- Sorghume0
- Outcome
- total weed densitye0
- Direction
- reductione0
- Value
- 67.58e0
- Qualifier
- 40e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Sorghum and rice water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 showed maximum (67.58 & 66.21%) reduction in total weed density at 40 and 60 days after sowing (DAS), respectively”
t0“canola”
Claim · model-written summary
Rice extract with pendimethalin reduced weed density 66.21% at 60 days.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- rice water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1e0
- Outcome
- total weed densitye0
- Direction
- reductione0
- Value
- 66.21%e0
- Qualifier
- 60 days after sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum and rice water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 showed maximum (67.58 & 66.21%) reduction in total weed density at 40 and 60 days after sowing (DAS), respectively”
t0“canola”
Claim · model-written summary
All treatments reduced total weed dry weight by more than 80% at 40 days versus control.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- All the treatmentse0
- Outcome
- total weed dry weighte0
- Direction
- reductione0
- Value
- more than 80%e0
- Qualifier
- 40 DASe0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the treatments offered more than 80% reduction in total weed dry weight over control at 40 DAS”
t0“canola”
Claim · model-written summary
All treatments reduced weed dry weight 44.93 to 63.99% at 60 days versus control.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- all the treatmentse0
- Outcome
- total weed dry weighte0
- Direction
- reductione0
- Value
- 44.93 to 63.99%e0
- Qualifier
- 60 DASe0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“44.93 to 63.99% reduction in total weed dry weight over control at 60 DAS was recorded in all the treatments”
t0“canola”
Claim · model-written summary
Sorghum extract plus pendimethalin yielded 2.604 Mg ha-1 seed, 39.99% above control.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- sorghume0
- Outcome
- seed yielde0
- Direction
- greatere0
- Value
- 2.604 Mg ha-1e0
- Qualifier
- 39.99%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plots treated with sorghum and sunflower water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 pendimethalin recorded maximum seed yield (2.604 Mg ha-1), which was 39.99% greater as compared to control”
t0“canola”
Claim · model-written summary
Sunflower extract plus pendimethalin yielded 2.604 Mg ha-1 seed, 39.99% above control.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- sunflower water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 pendimethaline0
- Outcome
- seed yielde0
- Direction
- greatere0
- Value
- 2.604 Mg ha-1e0
- Qualifier
- 39.99%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plots treated with sorghum and sunflower water extracts each at 15 L ha-1 combined with 600 g a.i. ha-1 pendimethalin recorded maximum seed yield (2.604 Mg ha-1), which was 39.99% greater as compared to control”
t0“canola”
Claim · model-written summary
The authors recommend reducing herbicide dose 50-67% when combined with allelopathic extracts.
- Taxon
- canolaBrassica napus var. napuse0
- Outcome
- Herbicide dose may be reduced by 50-67%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Herbicide dose may be reduced by 50-67% in combination with allelopathic water extracts for effective weed control and higher yields in canola field”
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