Extended pasture forage sward responses to Canada thistle (Cirsium arvense) control using herbicides and fertilization

Bork, Edward W.; Grekul, Chad W.; DeBruijn, Sue L.

doi:10.1016/j.cropro.2007.01.002

Cited by 18 publications

(17 citation statements)

References 22 publications

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“…Successful KBG establishment in pasture may depend on minimizing the influence of competing vegetation, particularly thistle, during early stages of pasture development. Similarly, where competing vegetation is abundant, prompt action may be needed to control unwanted vegetation, such as through broadleaf herbicides (Beck and Sebastian, 2000; Bork et al, 2007). Unfortunately, this action can preclude inclusion of a legume such as WC in the forage mix, as most herbicides effective on CT will also remove legumes (Peterson and Parochetti, 1978; Grekul et al, 2005; Mesbah and Miller, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…One of the mechanisms by which integrated approaches strive to suppress weeds is by altering interspecific competition to the disadvantage of target weeds. For example, both fertilization (Bork et al, 2007) and changes to the intensity and frequency of defoliation (De Bruijn et al, 2010) can enhance forage vigor, in turn reducing weed abundance (Thompson and Saunders, 1986; Grekul and Bork, 2007). Despite this, little is known about the relative competitive influences among specific plant species, including common forage plants and associated pasture weeds.…”

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confidence: 99%

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Interspecific Relationships between White Clover, Kentucky Bluegrass, and Canada Thistle during Establishment

et al. 2013

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Forage establishment on fallow fields may be reduced by re-colonization and associated competition from hard to control perennial weeds that reproduce from residual root fragments. We assessed the competitive relationships between regenerating Canada thistle (Cirsium arvense L.) (CT) root fragments and seedlings of white clover (Trifolium repens L.) (WC), and Kentucky bluegrass (Poa pratensis L.) (KBG). Two greenhouse trials were conducted, each comparing 10 combinations of all three species grown in monoculture, or together (1:1:1 ratio), or in 1:2 and 2:1 binary mixtures in all possible combinations. All treatments were additionally done at two planting densities. After establishment, plants were grown for 70 d and assessed for biomass of all three species, as well as thistle shoot densities. Results from the two trials were similar. Canada thistle consistently produced the greatest biomass, and was more susceptible to intraspecific competition than competition from adjacent forage plants. Seedlings of neighboring WC were more effective competitors than KBG in reducing final thistle biomass and shoot density. White clover was also more likely to maintain shoot and root biomass under increasing weed presence. These results highlight the importance of reducing CT populations before forage seeding, as well as incorporating species such as WC that may be more tolerant of competition from the weed during the initial establishment period.

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Section: Discussionmentioning

confidence: 99%

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Interspecific Relationships between White Clover, Kentucky Bluegrass, and Canada Thistle during Establishment

et al. 2013

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“…Rather, we investigated the qualitative behaviour of five models to assess their abilities to represent the expected behaviour, especially at extreme parameter values. These represent different scenarios and issues raised in the literature (Bork et al, 2007;Jones et al, 2004;Wilkerson et al, 2002). While no experimental data were used as part of the evaluation, the values of the parameters chosen are similar to the parameters estimated by many experimental studies such as Jasieniuk et al (1999) and Cousens (1985).…”

Section: Evaluation Of Behaviour Of Selected Modelsmentioning

confidence: 98%

Assessment of functional forms of crop yield loss models of invasive plant species applied in decision support tools and bioeconomic modelling

Dhakal

Scanlan

2015

Agricultural Systems

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“…For certain parameters, restoration management may have positive effects on pasture health, such as greater root production. Although there may be years when restoration techniques adversely affect production, even management aimed at improving pasture production, such as weed control, sometimes reduces forage quantity and quality (Bork et al, 2007). Balancing plant diversity and production in grasslands is difficult for both farmers and ecologists (Guo, 2007), and if the restoration management results in successful establishment of native grasses, farmers may be willing to accept inconsistencies in production for a few years.…”

Section: Implications For Managementmentioning

confidence: 99%

Effects of Native Grass Restoration Management on Above- and Belowground Pasture Production and Forage Quality

Doll

Brink

Cates

et al. 2009

Journal of Sustainable Agriculture

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Multifunctional agricultural landscapes and the ecosystem services they provide are gaining more attention. One example of this is the reintroduction of native species to cool-season grassland agroecosystems managed for livestock production. While such projects have potential ecological and agronomic benefits, there is little information on how restoration management affects pasture production and quality. The objective of this study was to determine how management to establish native warm-season grasses into temperate pastures affects forage production and quality. We tested this over three years (2004 through 2006) using a field experiment with combinations of disturbance (burning and grazing), soil amendments (ambient, nitrogen, and carbon), and native grass seeding times (fall and spring). We measured aboveground net primary production (ANPP), belowground net primary production (BNPP), and two forage quality parameters-neutral detergent fiber and in vitro neutral detergent fiber digestibility. For ANPP, there was a significant disturbance ´ soil amendment interaction effect in each year, but the nature of the interaction varied by year. In 2005, plots where nitrogen was applied had 513 lower BNPP than carbon and ambient plots. In 2006, burned plots had greater BNPP than grazed plots. For each level of disturbance, over 50% of the variability in the forage quality parameters was attributed to non-management variables, such as season. Our results showed no consistent effect of restoration management on pasture production or quality. They highlight the complexity of grassland agroecosystems and demonstrate the importance of evaluating the variability of treatment effects over time.

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Extended pasture forage sward responses to Canada thistle (Cirsium arvense) control using herbicides and fertilization

Cited by 18 publications

References 22 publications

Interspecific Relationships between White Clover, Kentucky Bluegrass, and Canada Thistle during Establishment

Interspecific Relationships between White Clover, Kentucky Bluegrass, and Canada Thistle during Establishment

Assessment of functional forms of crop yield loss models of invasive plant species applied in decision support tools and bioeconomic modelling

Effects of Native Grass Restoration Management on Above- and Belowground Pasture Production and Forage Quality

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