Abstract
Rapessed is one of the most important oilseed crops. Weeds, also are most important factors that limit the production of the oil crops and greatly affect the quantity and quality of their extracted oils. To investigate the effect of row spacing and herbicide application on photosynthetic pigments and rapeseed yield, a factorial experiment based on a randomized complete block design with three replications was conducted during 2017-18 at Bayekola Research Station, Neka, Mazandaran. Factors were planting arrangement in two levels )one and two-row plantings( and weed control in 7 levels of application of herbicides consisting of Trifluralin (Treflan) 2.5 l.ha-1 before planting and mixed with soil, Quinmerac + Metazachlor (Butisan Star) 2.5 l.ha-1 pre-emergence, Trifluralin 2.5 l/ha before planting + Quinmerac + Metazachlor 2.5 l.ha-1 pre-emergence, Chlopyralid (lontrel) 1 l.ha-1 + Haloxyfop-R-Methyl (Super Gallant) 0.8 l.ha-1 at 2 to 4 weeds leaf stage, Paraquat (Gramaxon) 2 l.ha-1 at 4 to 6 weeds leaf stages, weed control and without weed control. The results showed that by changing the planting arrangement and using combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture, the rapeseed chlorophyll content increased by 38.06% and 34.11% as compared to without weed control. Also, weed dry weight decreased by 87.16% and 94.97%, and rapeseed grain yield increased by 73.4% and 76.79%, respectively, which resulted in increasing crops,s extracted oil. It can be concluded that by modifying the canola planting pattern we can increase canola,s oil yield, and application of guided herbicide or combination of Trifluralin with Quinmerac + Metazachlor, to control weeds.
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Claims 11
Claim · model-written summary
Two-row cultivation with Trifluralin plus Quinmerac + Metazachlor increased rapeseed chlorophyll by 38.06% relative to no weed control.
Verbatim
e0“The results showed that by changing the planting arrangement and using combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture, the rapeseed chlorophyll content increased by 38.06% and 34.11% as compared to without weed control.”
Claim · model-written summary
Two-row cultivation with guided Paraquat increased rapeseed chlorophyll by 34.11% relative to no weed control.
Verbatim
e0“The results showed that by changing the planting arrangement and using combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture, the rapeseed chlorophyll content increased by 38.06% and 34.11% as compared to without weed control.”
Claim · model-written summary
Two-row cultivation with the combined herbicides decreased weed dry weight by 87.16%.
Verbatim
e0“Also, weed dry weight decreased by 87.16% and 94.97%, and rapeseed grain yield increased by 73.4% and 76.79%, respectively, which resulted in increasing crops,s extracted oil.”
e1“combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
Claim · model-written summary
Two-row cultivation with guided Paraquat decreased weed dry weight by 94.97%.
Verbatim
e0“Also, weed dry weight decreased by 87.16% and 94.97%, and rapeseed grain yield increased by 73.4% and 76.79%, respectively, which resulted in increasing crops,s extracted oil.”
e1“application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
Claim · model-written summary
Two-row cultivation with the combined herbicides increased rapeseed grain yield by 73.4%.
Verbatim
e0“Also, weed dry weight decreased by 87.16% and 94.97%, and rapeseed grain yield increased by 73.4% and 76.79%, respectively, which resulted in increasing crops,s extracted oil.”
e1“combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
Claim · model-written summary
Two-row cultivation with guided Paraquat increased rapeseed grain yield by 76.79%.
Verbatim
e0“Also, weed dry weight decreased by 87.16% and 94.97%, and rapeseed grain yield increased by 73.4% and 76.79%, respectively, which resulted in increasing crops,s extracted oil.”
e1“application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
Claim · model-written summary
The combined herbicides in two-row culture increased extracted oil.
Verbatim
e0“which resulted in increasing crops,s extracted oil.”
e1“combination of Trifluralin with Quinmerac + Metazachlor and/or application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
t0“Rapeseed”
Claim · model-written summary
Guided Paraquat in two-row culture increased extracted oil.
Verbatim
e0“which resulted in increasing crops,s extracted oil.”
e1“application of Paraquat (as a guided herbicide) in two-row culture”
e2“as compared to without weed control”
t0“Rapeseed”
Claim · model-written summary
The authors recommend modifying canola planting patterns to increase oil yield.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Outcome
- modifying the canola planting patterne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“It can be concluded that by modifying the canola planting pattern we can increase canola,s oil yield, and application of guided herbicide or combination of Trifluralin with Quinmerac + Metazachlor, to control weeds.”
Claim · model-written summary
The authors recommend guided herbicide application for weed control.
- Taxon
- canolaBrassica napus var. napuse0
- Interactor
- weedse0weed
- Outcome
- application of guided herbicidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It can be concluded that by modifying the canola planting pattern we can increase canola,s oil yield, and application of guided herbicide or combination of Trifluralin with Quinmerac + Metazachlor, to control weeds.”
Claim · model-written summary
The authors recommend Trifluralin with Quinmerac + Metazachlor for weed control.
- Taxon
- canolaBrassica napus var. napuse0
- Interactor
- weedse0weed
- Outcome
- combination of Trifluralin with Quinmerac + Metazachlore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It can be concluded that by modifying the canola planting pattern we can increase canola,s oil yield, and application of guided herbicide or combination of Trifluralin with Quinmerac + Metazachlor, to control weeds.”
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paraquat · yield · Brassica napus (oilseed rape)Positive and negative results
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- no effect
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See all 5 papers →herbicide · yield · Brassica napus (oilseed rape)Results differ
31 papers in the same direction as this paper · 15 in the opposite direction · 4 reporting no difference from an alternative
- no effect
- negative
- negative
47 papers more in this group
See all 51 papers →herbicide · physiology: pigments · Brassica napus (oilseed rape)Positive and negative results
1 in the opposite direction
- negative
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.