COMPETITIVE ABILITY OF WHEAT IN ASSOCIATION WITH BIOTYPES OF Raphanus raphanistrum L. RESISTANT AND SUSCEPTIBLE TO ALS-INHIBITOR HERBICIDES

Costa, Leandro Oliveira; Rizzardi, Mauro Antônio

doi:10.1590/s1413-70542015000200003

Cited by 12 publications

(15 citation statements)

References 33 publications

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“…Therefore, it is observed that interspecific competition is less harmful than intraspecific competition for both species involved. When working with rice and soybean x zigzag jointvetch (Aeschynomene rudis) (Agostinetto et al, 2013), wheat x turnip 8 (Costa and Rizzardi, 2015), rice in competition with zigzag jointvetch (Aeschynomene rudis) (Galon et al, 2015) and wheat in the presence of ryegrass (Rigoli et al, 2008), the same effects denoted in this study were also observed.…”

Section: Resultssupporting

confidence: 84%

“…The knowledge of the dynamics and competitiveness between plants -especially barley and turnip -is essential for decision-making to control the weed in a given population that will not cause negative interference on the culture, even considering that the turnip can produce up to 17,275 seeds m -2 (Reeves et al, 1981) and that this weed is resistant to the herbicides inhibiting ALS (Costa and Rizzardi, 2015), widely used in controlling infesting weed species of barley and wheat.…”

Section: Resultsmentioning

confidence: 99%

“…The turnip has been used also as a plant for ground cover,adoption of no-till system on straw, or as winter forage for animal feed (Costa and Rizzardi, 2015), and this causes the seed bank to increase in each harvest.…”

Section: Introductionmentioning

confidence: 99%

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Competitive Relative Ability of Barley Cultivars in Interaction With Turnip

et al. 2017

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-Among the weeds that cause interference with the growth and development of barley the turnip stands out, especially by the high competitive ability for the resources available in the environment. The research objective with the study was to evaluate the competitive ability of barley cultivars to live with a turnip biotype. Experiments were installed in a greenhouse, in the experimental outlining of randomized blocks designed with four repetitions. The treatments were arranged in replacement series, consisting of proportions of barley plants and turnip: 100: 0, 75:25, 50:50, 25:75 and 0: 100% which was equivalent to 20: 0, 15: 5, 10:10, 5:15 and 0:20 plants per pot. The barley was represented by BRS Cauê, BRS Elis and MN 610 and the competitor by turnip. The competitive analysis was made through diagrams applied in replacement experiments, among with use of relative competitiveness indices. The leaf area (AF) and the dry mass of the aerial part (MS) were evaluated at 50 days after the emergence of the species. The results show that there was competition between barley varieties with the turnip with mutual damage to the species involved in the community. Turnip negatively modified the AF and the MS of BRS Cauê, MN 610 and BRS Elis demonstrating higher competitive ability for the means of the resources. The interspecific competition causes greater damage to the AF and the MS species than the intraspecific competition. Thus, the turnip control is recommended the turnip control even when present at low densities of plants infesting the barley. Keywords:Hordeum vulgare, Raphanus sativus, competitive interaction. : 100:0, 75:25, 50:50, 25:75 e 0:100%, o que equivaleu a 20:0, 15:5, 10:10, 5:15 RESUMO -Entre as plantas daninhas que ocasionam interferência no crescimento e no desenvolvimento da cevada, destaca-se o nabo, em especial por apresentar elevada habilidade competitiva pelos recursos disponíveis no meio. Diante disso, objetivou-se com este trabalho avaliar a habilidade competitiva de cultivares de cevada ao conviverem com um biótipo de nabo. Foram instalados experimentos em casa de vegetação, no delineamento experimental de blocos casualizados com quatro repetições. Os tratamentos foram arranjados em série de substituição, constituídos por proporções de plantas de cevada e do nabo

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

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Competitive Relative Ability of Barley Cultivars in Interaction With Turnip

et al. 2017

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“…For the variable of onion leaf area the competition with turnip was much more aggressive when compared to competition with ryegrass (Figure 3A and 3B). Competitive potential of turnip was observed in relation to ryegrass when these two weeds infested winter cereals (Costa and Rizzardi, 2015). There was a significant reduction in leaf area values of onion in the lowest established competition (one plant pot -1 ).…”

Section: Resultsmentioning

confidence: 96%

“…This fact is due to the high prolificacy, longevity, seed dormancy and germination capacity under adverse conditions of climate and soil. It was found that this species has a competitive capacity of 5 to 10 times greater than ryegrass (Lolium multiflorum) when in competition with winter cereals (Costa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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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Intra- and interspecies competition of blackgrass and wheat in the context of herbicidal resistance and environmental conditions in Poland

Wenda-Piesik

Synowiec

Marcinkowska

et al. 2022

Sci Rep

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Blackgrass (Alopecurus myosuroides Huds.), one of the most aggressive grass weeds in Europe, is also a strong competitor of crops. This study aimed to assess the impact of environmental conditions on the competition between (1) ACC-ase and ALS herbicide-resistant (BR) and herbicide-susceptible (BS) blackgrass biotypes, (2) BR and winter wheat cv. Arkadia (W), and (3) BS and W. In the replacement series model, the experiment was conducted at seven sites across Poland during two seasons (2018/19 and 2019/20). In the BR-BS experiment, the BS biotype was in majority more competitive toward the BR biotype. However, in the regime of optimal hydrothermal conditions and at a higher sand content in the soil we observed a higher competitiveness of BR towards BS. The combined interactions between W and BR or BS were also affected by environmental conditions, i.e., soil texture and hydrothermal coefficient, as explained by PCA and k-means cluster analysis. At most sites, W was more competitive toward both BS and BR, which could result from earlier emergence of W in relation to B in majority of sites. Except for two cases, located on heavy, clay soils, during humid seasons, where B was more competitive toward W. We summarize that blackgrass competitiveness towards other biotypes and wheat depends to some extent on environmental conditions; however, the phenomenon should be explored in more detail.

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COMPETITIVE ABILITY OF WHEAT IN ASSOCIATION WITH BIOTYPES OF Raphanus raphanistrum L. RESISTANT AND SUSCEPTIBLE TO ALS-INHIBITOR HERBICIDES

Cited by 12 publications

References 33 publications

Competitive Relative Ability of Barley Cultivars in Interaction With Turnip

Competitive Relative Ability of Barley Cultivars in Interaction With Turnip

Competitive Interaction between Weeds and Onion Crop

Intra- and interspecies competition of blackgrass and wheat in the context of herbicidal resistance and environmental conditions in Poland

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