Competitive Ability of Canola Hybrids With Weeds

Galon, Leandro; Agazzi, Luciane Renata; Várgas, Leandro; Nonemacher, Felipe; Basso, Felipe José Menin; Perin, Gismael Francisco; Fernandes, Francis; Forte, César Tiago; Rocha, A. A.; Trevisol, Ricardo; Winter, Fábio Luís

doi:10.1590/s0100-83582015000300004

Cited by 14 publications

(17 citation statements)

References 16 publications

(47 reference statements)

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“…In an experiment carried out comparing the competitive ability of Hyola 61, Hyola 76, Hyola 433 and Hyola 571CL canola hybrids with the turnip, the authors verified that there was mutual injury to the growth of the crop and weed, being observed concave lines for PR of both (Galon et al, 2015). Still in this trial, the authors found PRT lower than 1, indicating that competition between canola and turnip caused mutual injury.…”

Section: Resultsmentioning

confidence: 89%

Competitive Ability of Canola Hybrids Resistant and Susceptible to Herbicides

et al. 2019

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This work aimed to compare the competitive ability of canola hybrids susceptible (conventional) or resistant to triazine or imidazolinone group herbicides, with turnip. The experiments were conducted in greenhouse, in a completely randomized design, with four replicates. The hybrids Hyola 571CL (resistant to imidazolinone), Hyola 555TT (resistant to triazine), and Hyola 61 (conventional) were used. The treatments consisted of ratios (100:0; 75:25; 50:50; 25:75; 0:100%) of canola and turnip plants. The evaluation was performed 44 days after emergence, determining the leaf área (AF), dry matter of aerial part (MSPA), and stature (EST) of the plants. The competitiveness analysis was performed through diagrams and interpretation of the competitiveness indexes. For the canola hybrids, the competition occurred by the same mean resources. There was damage to the crop growth in competition with the turnip. The turnip was not benefited only when in competition with Hyola 571CL hybrid, for the EST variable, and with the conventional canola, for the variable AF. There was significance for the competitiveness indexes, demonstrating that turnip is more competitive then the crop. Greater AF, MSPA, and EST occurred for canola plants in the smallest proportions of turnip and, for turnip plants, in the largest proportions of canola. The ability to compete with turnip is similar among hybrids, with injury to the crop and benefit to the weed, when competing. Interspecific competition is more damaging to canola hybrids; and intraspecific competition is more damaging to turnip.

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Section: Resultsmentioning

confidence: 89%

Competitive Ability of Canola Hybrids Resistant and Susceptible to Herbicides

et al. 2019

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“…The morphological and physiological traits of each canola hybrid influence their competitive ability against weed species. Galon et al (2015) reported that Hyola 433 (used as volunteer hybrid in this study) was more competitive than Hyola 61 in association with turnip; however, in the interaction with ryegrass, Hyola 61 showed the highest competitive ability between all hybrids tested.…”

Section: Resultsmentioning

confidence: 56%

Interference of Brassicaceae and Poaceae on Canola Hybrids

et al. 2019

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The objective of this study was to evaluate the initial competitive ability of canola hybrids against Brassicaceae and Poaceae species in terms of root and shoot resources. Two experiments were conducted in greenhouse, in a completely randomized design with four replications. The treatments consisted of interference conditions by root + shoot interference (root+shoot) and shoot interference (Light); and Brassicaceae and Poaceae weeds competing with hybrid of canola (Hyola 61 and Diamond) with different traits for competitiveness. The plant height, root length, dry matter of shoot and root, number of leaves and leaf area were evaluated. Data were compared using orthogonal contrasts. The turnip and volunteer canola reduced root development of the Hyola 61 in root + shoot interference, and among the Brassicaceas weeds, turnip caused greater losses. Brassicaceas weeds caused largest reductions in Diamond’s hybrid growth compared to Poaceae, mainly under light interference. Brassicaceas and Poaceae weeds cause similar damage to Hyola 61 hybrid, and the injury is higher for root +shoot interference. The black oat induce shoot growth in the Diamond hybrid under shoot interference, while among the Brassicaceae weed species, there were no differences.

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“…The ryegrass is commonly found in the crops of the southern region of Brazil, this species has elevated seed production and easy dispersion, causes losses of wheat production (Agostinetto et al, 2008), in barley (Tironi et al, 2014) and in canola (Galon et al, 2015). It is noteworthy that scarce are the studies that have evaluated the competition effect of turnip and ryegrass on onion culture, thus justifying the present work.…”

Section: Introductionmentioning

confidence: 75%

Competitive Interaction between Weeds and Onion Crop

Franceschetti¹,

Galon²,

Menegat³

et al. 2019

IJAERS

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Among the factors that affect crop productivity are weeds that compete for the resources present in the environment. Then, the objective of this study was to evaluate the competitiveness of turnip and ryegrass infesting the onion crop. The experiment was conducted in a greenhouse, in a randomized complete block design, arranged in a 2x8 factorial scheme, with four replications. In factor A, were allocated the weeds (turnip and ryegrass) and in the B, were allocated populations of these species (0, 1, 2, 3, 4, 5, 6 and 7 pot-1 plants) living with an onion plant. 50 days after transplanting, were evaluated the height, stem diameter, leaf area and dry mass of the aerial part of the onion plants. For the weeds, only the dry mass of the aer ial part was determined. In face of the results, it can be observed that the onion has a low competitive capacity, being the turnip the weed more aggressive in the competition, for all evaluated variables.

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Competitive Ability of Canola Hybrids With Weeds

Cited by 14 publications

References 16 publications

Competitive Ability of Canola Hybrids Resistant and Susceptible to Herbicides

Competitive Ability of Canola Hybrids Resistant and Susceptible to Herbicides

Interference of Brassicaceae and Poaceae on Canola Hybrids

Competitive Interaction between Weeds and Onion Crop

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