Abstract
[Aims]With the increase of area of machine-transplanted rice fields,occurrence of weeds was also increasingly serious.Field efficacy of different spraying time and spraying doses to major weeds was evaluated in machine-transplanted fields in Tonglu county of Zhejiang province during the years of 2008 to 2009 in order to effectively control the damage of weeds.[Results] Field efficacy of the mixture of butachlor 5% GR 750 g a.i./ha and bensulfuron methyl 10% WP 30 g a.i./ha,and acetochlor·bensulfuron-methyl 20% WP 90 g a.i./ha sprayed on the 3rd day after machine-transplanting on fresh weight of total weeds were significantly higher than those on the 7th day after machine-transplanted for 50 days after machine-transplanting.On the 5th day spraying after machine-transplanted,control efficacy of bensulfuron methyl·mefenacet 53% WP at different doses(318,477,636 g a.i./ha) to C.difformis,broadleaved weeds and total weeds were different for 30 and 50 days after herbicide-spraying.While control effects of bensulfuron methyl·butachlor·isoproturon 50% WP at different doses(450,600 g a.i./ha) had no obvious difference to E.crusgalli,C.difformis,broadleaved and total weeds.Stem and fresh-weight control effect of the two herbicides treated with different doses to total weeds was more than 93 and 99% for 50 days after spraying respectively,and the increase of rice yield was 8.2-14.4%.Other herbicides above were safety to machine-transplanted rice plants,except acetochlor·bensulfuron-methyl 20% WP 90 g a.i./ha had some negative effect on rice for 15 days after spraying.[Conclusions] On the 3rd to 5th day after machine-transplanting,butachlor GR 750 g a.i./ha+bensulfuron methyl WP 30 g a.i./ha,or bensulfuron methyl·mefenacet WP 318-636 g a.i./ha,or bensulfuron methyl·butachlor·isoproturon WP 450-600 g a.i./ha applied using toxic clay could effectively control the damage of weeds in machine-transplanting rice fields,and be safety to machine-transplanted rice plants.
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Claims 9
Claim · model-written summary
Spraying the butachlor plus bensulfuron methyl mixture and acetochlor-bensulfuron-methyl on the 3rd day after machine-transplanting gave significantly higher control of total weed fresh weight than spraying on the 7th day, 50 days after transplanting.
- Taxon
- Rice
Oryza sativat0 - Treatment
- mixture of butachlor 5% GR 750 g a.i./ha and bensulfuron methyl 10% WP 30 g a.i./ha,and acetochlor·bensulfuron-methyl 20% WP 90 g a.i./ha sprayed on the 3rd day after machine-transplantinge1
- Interactor
- weedse1weed
- Outcome
- fresh weight of total weedse1
- Direction
- highere1
- Comparator
- 7th day after machine-transplantede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“Field efficacy of the mixture of butachlor 5% GR 750 g a.i./ha and bensulfuron methyl 10% WP 30 g a.i./ha,and acetochlor·bensulfuron-methyl 20% WP 90 g a.i./ha sprayed on the 3rd day after machine-transplanting on fresh weight of total weeds were significantly higher than those on the 7th day after machine-transplanted”
Claim · model-written summary
With bensulfuron methyl-mefenacet 53% WP at 318, 477 and 636 g a.i./ha sprayed on the 5th day, control efficacy on C. difformis, broadleaved weeds and total weeds differed among doses at 30 and 50 days after spraying.
- Taxon
- RiceOryza sativat0
- Treatment
- bensulfuron methyl·mefenacet 53% WP at different doses(318,477,636 g a.i./ha)e1
- Interactor
- broadleaved weedse1weed
- Outcome
- control efficacye1
- Comparator
- different dosese1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“control efficacy of bensulfuron methyl·mefenacet 53% WP at different doses(318,477,636 g a.i./ha) to C.difformis,broadleaved weeds and total weeds were different for 30 and 50 days after herbicide-spraying”
Claim · model-written summary
Bensulfuron methyl-butachlor-isoproturon 50% WP at 450 and 600 g a.i./ha showed no obvious difference in control effect on E. crusgalli, C. difformis, broadleaved and total weeds.
- Taxon
- RiceOryza sativat0
- Treatment
- bensulfuron methyl·butachlor·isoproturon 50% WP at different doses(450,600 g a.i./ha)e1
- Interactor
- E.crusgallie1weed
- Outcome
- control effectse1
- Direction
- no obvious differencee1
- Comparator
- different dosese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“control effects of bensulfuron methyl·butachlor·isoproturon 50% WP at different doses(450,600 g a.i./ha) had no obvious difference to E.crusgalli,C.difformis,broadleaved and total weeds”
Claim · model-written summary
Stem control effect of the two herbicides at different doses on total weeds exceeded 93% at 50 days after spraying.
- Taxon
- RiceOryza sativat0
- Treatment
- the two herbicides treated with different dosese1
- Interactor
- total weedse1weed
- Outcome
- control effecte1
- Direction
- more thane1
- Value
- more than 93e1
- Qualifier
- Steme1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“Stem and fresh-weight control effect of the two herbicides treated with different doses to total weeds was more than 93 and 99% for 50 days after spraying respectively”
Claim · model-written summary
Fresh-weight control effect of the two herbicides at different doses on total weeds exceeded 99% at 50 days after spraying.
- Taxon
- RiceOryza sativat0
- Treatment
- the two herbicides treated with different dosese1
- Interactor
- total weedse1weed
- Outcome
- control effecte1
- Direction
- more thane1
- Value
- 99%e1
- Qualifier
- fresh-weighte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“Stem and fresh-weight control effect of the two herbicides treated with different doses to total weeds was more than 93 and 99% for 50 days after spraying respectively”
Claim · model-written summary
Rice yield increased by 8.2-14.4% with the two herbicides.
- Taxon
- RiceOryza sativat0
- Treatment
- the two herbicidese1
- Outcome
- rice yielde1
- Direction
- increasee1
- Value
- 8.2-14.4%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“the two herbicides treated with different doses to total weeds was more than 93 and 99% for 50 days after spraying respectively,and the increase of rice yield was 8.2-14.4%”
Claim · model-written summary
The other herbicides tested were safe to machine-transplanted rice plants.
- Taxon
- RiceOryza sativat0
- Treatment
- Other herbicides abovee1
- Outcome
- safety to machine-transplanted rice plantse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“Other herbicides above were safety to machine-transplanted rice plants”
Claim · model-written summary
Acetochlor-bensulfuron-methyl 20% WP at 90 g a.i./ha had some negative effect on rice for 15 days after spraying.
- Taxon
- RiceOryza sativat0
- Treatment
- acetochlor·bensulfuron-methyl 20% WP 90 g a.i./hae1
- Outcome
- negative effect on ricee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“acetochlor·bensulfuron-methyl 20% WP 90 g a.i./ha had some negative effect on rice for 15 days after spraying”
Claim · model-written summary
Authors conclude that applying the listed herbicide treatments on the 3rd to 5th day after machine-transplanting, using toxic clay, effectively controls weed damage and is safe for rice.
- Taxon
- RiceOryza sativat0
- Outcome
- effectively control the damage of weedse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Single Late Rice”
e1“On the 3rd to 5th day after machine-transplanting,butachlor GR 750 g a.i./ha+bensulfuron methyl WP 30 g a.i./ha,or bensulfuron methyl·mefenacet WP 318-636 g a.i./ha,or bensulfuron methyl·butachlor·isoproturon WP 450-600 g a.i./ha applied using toxic clay could effectively control the damage of weeds”
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