Abstract
The experiment was carried out in the Experimental Area of the Plant Genetic Improvement Sector of the Agricultural Sciences Center of the Federal University of Alagoas (SMGP-CECA-UFAL), in the year 2013, where periods of control and weed coexistence of sweet potatoes were evaluated. The experimental design was carried out in randomized blocks in the 3 x 14 factorial scheme with three replications, with three sweet potato genotypes in 14 periods of interference, and distributed in seven control periods (0, 10, 20, 30, 40, 50 and 60 days after planting - DAP), from which the weeds were controlled, and seven coexistence periods, from which the weeds coexisted with the crop. The evaluations consisted of sweet potato genotype shoot samplings at 30, 60, 90, and 120 days after planting (DAP), using one working area plant per plot in each evaluation stage. In the determination of the leaf area, a mechanical integrator was used, and to obtain the shoot dry mass, the material was taken to a forced air circulation oven at 65 ºC for 72 h, with subsequent weighing. According to the results, it can be observed that, in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled, especially the reduction of the leaf area at 120 DAP, where clone 6 and Sergipana showed a reduction of 89.0% and 88.0%, respectively. As for Clone 14, this reduction occurred at 90 DAP, at about 52.0%, which was less expressive, whereas in relation to the shoot dry mass, clones 6, 14, and the Sergipana variety showed a reduction at 120 DAP of 86%, 51%, and 46%, respectively.
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Claims 7
Claim · model-written summary
Weed coexistence significantly reduced sweet potato shoot growth rates compared with weed-controlled treatments.
- Taxon
- sweet potatoes
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- shoot growth ratese1
- Direction
- reductione1
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
Claim · model-written summary
Under weed coexistence, leaf area of clone 6 was reduced by 89.0% at 120 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- clone 6e2
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- leaf areae2
- Direction
- reductione2
- Value
- 89.0%e2
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e2“especially the reduction of the leaf area at 120 DAP, where clone 6 and Sergipana showed a reduction of 89.0% and 88.0%, respectively”
Claim · model-written summary
Under weed coexistence, leaf area of Sergipana was reduced by 88.0% at 120 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- Sergipanae2
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- leaf areae2
- Direction
- reductione2
- Value
- 88.0%e2
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e2“especially the reduction of the leaf area at 120 DAP, where clone 6 and Sergipana showed a reduction of 89.0% and 88.0%, respectively”
Claim · model-written summary
Under weed coexistence, leaf area of clone 14 was reduced by about 52.0% at 90 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- Clone 14e3
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- leaf areae2
- Direction
- reductione3
- Value
- about 52.0%e3
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e2“especially the reduction of the leaf area at 120 DAP”
e3“As for Clone 14, this reduction occurred at 90 DAP, at about 52.0%, which was less expressive”
Claim · model-written summary
Under weed coexistence, shoot dry mass of clone 6 was reduced by 86% at 120 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- clones 6e4
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- shoot dry masse4
- Direction
- reductione4
- Value
- 86%e4
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e4“whereas in relation to the shoot dry mass, clones 6, 14, and the Sergipana variety showed a reduction at 120 DAP of 86%, 51%, and 46%, respectively”
Claim · model-written summary
Under weed coexistence, shoot dry mass of clone 14 was reduced by 51% at 120 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- Clone 14e3
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- shoot dry masse4
- Direction
- reductione4
- Value
- 51%e4
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e3“As for Clone 14, this reduction occurred at 90 DAP, at about 52.0%, which was less expressive”
e4“whereas in relation to the shoot dry mass, clones 6, 14, and the Sergipana variety showed a reduction at 120 DAP of 86%, 51%, and 46%, respectively”
Claim · model-written summary
Under weed coexistence, shoot dry mass of Sergipana was reduced by 46% at 120 DAP.
- Taxon
- sweet potatoesIpomoea batatase0
- Material
- Sergipana varietye4
- Treatment
- coexisting treatmentse1
- Interactor
- weedse1weed
- Outcome
- shoot dry masse4
- Direction
- reductione4
- Value
- 46%e4
- Comparator
- treatments in which the weeds were controllede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periods of control and weed coexistence of sweet potatoes”
e1“in the coexisting treatments, there was a significant reduction in the shoot growth rates, in comparison to the treatments in which the weeds were controlled”
e4“whereas in relation to the shoot dry mass, clones 6, 14, and the Sergipana variety showed a reduction at 120 DAP of 86%, 51%, and 46%, respectively”