Abstract
Rice is commonly used in degraded pasture area renovation. In this process, the rice is set up simultaneously with the forage plants, which increases the difficulty to control post-emerged weeds. Thus, this study aimed to evaluate rice crop development intercropped with Urochloa under the herbicides pendimethalin and trifluralin application. The experimental design used was a 2x3 factorial composed of 1) absence or 2) presence of the herbicides pre-plant incorporated (PPI) x 1) control (no additional herbicides); 2) pendimethalin and 3) trifluralin. For the intercrop with rice, two forage grass were used, Urochloa ruziziensis and U. brizantha. The rice was sowed on the same day as the application of the herbicide. The control level determination was performed by counting the remaining weeds. In the rice crop, were evaluated: tiller number, viable panicle, and grain yield. In the forage grass, was evaluated shoot dry mass yield. An interaction between herbicide application and incorporation was observed. On weed the joyweed (Alternanthera tenella) control was affected by treatments, under herbicide incorporation, the weed was better controlled. Thus, the improved control provided better conditions for shoot dry weight biomass production. The highest rice yield was observed under intercrop with U. ruziziensi and pendimethalin application. The trifluralin incorporation decreased the shoot biomass of the forage grass plants. The use of pre-emergence herbicides provide weed control and increased rice yield without reducing the grass dry weight and not affecting the intercropping system.
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Claims 7
Claim · model-written summary
Herbicide incorporation improved joyweed control.
- Treatment
- herbicide incorporatione0
- Interactor
- Alternanthera tenella
Alternanthera ficoideae0weed - Outcome
- joyweed (Alternanthera tenella) controle0
- Direction
- better controllede0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On weed the joyweed (Alternanthera tenella) control was affected by treatments, under herbicide incorporation, the weed was better controlled.”
Claim · model-written summary
Improved weed control provided better conditions for shoot biomass production.
Not reportedTaxon
Verbatim
e0“Thus, the improved control provided better conditions for shoot dry weight biomass production.”
Claim · model-written summary
Rice yield was highest with U. ruziziensi intercropping and pendimethalin.
- Taxon
- rice
Oryza sativae0 - Treatment
- intercrop with U. ruziziensi and pendimethalin applicatione0
- Interactor
- U. ruziziensie0other
- Outcome
- rice yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest rice yield was observed under intercrop with U. ruziziensi and pendimethalin application.”
Claim · model-written summary
Incorporated trifluralin decreased forage grass shoot biomass.
Not reportedComparator
Verbatim
e0“The trifluralin incorporation decreased the shoot biomass of the forage grass plants.”
Claim · model-written summary
Pre-emergence herbicides improved weed control.
- Taxon
- riceOryza sativae0
- Treatment
- pre-emergence herbicidese0
- Outcome
- weed controle0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of pre-emergence herbicides provide weed control and increased rice yield without reducing the grass dry weight and not affecting the intercropping system.”
Claim · model-written summary
Pre-emergence herbicides increased rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- pre-emergence herbicidese0
- Outcome
- rice yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of pre-emergence herbicides provide weed control and increased rice yield without reducing the grass dry weight and not affecting the intercropping system.”
Claim · model-written summary
Pre-emergence herbicides did not reduce grass dry weight.
Not reportedComparator
Verbatim
e0“The use of pre-emergence herbicides provide weed control and increased rice yield without reducing the grass dry weight and not affecting the intercropping system.”
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