Above- and belowground interference of wheat (<i>Triticum aestivum</i>) by Italian ryegrass (<i>Lolium multiflorum</i>)

Stone, Martin J.; Cralle, Harry T.; Chandler, James M.; Miller, Travis D.; Bovey, R. W.; Carson, Katherine H.

doi:10.1017/s004317450009086x

Cited by 28 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This corresponds to previous studies that observed Lolium spp. as a strong competitor (Stone et al 1998, Hodge et al 1999, Cralle et al 2003. The depression in L. multiflorum productivity in AMF-inoculated treatments compared to the non-mycorrhizal treatment would suggest AMF supply soil resources toward T. pratense away from L. multiflorum.…”

Section: Competitive Interactions Between Host Plantsmentioning

confidence: 98%

Mycorrhizal fungal identity and diversity relaxes plant–plant competition

Wagg

Jansa

Stadler

et al. 2011

Ecology

244

202

View full text Add to dashboard Cite

There is a great interest in ecology to understand the role of soil microbial diversity for plant productivity and coexistence. Recent research has shown increases in species richness of mutualistic soil fungi, the arbuscular mycorrhizal fungi (AMF), to be related to increases in aboveground productivity of plant communities. However, the impact of AMF richness on plant-plant interactions has not been determined. Moreover, it is unknown whether species-rich AMF communities can act as insurance to maintain productivity in a fluctuating environment (e.g. upon changing soil conditions). We tested the impact of four different AMF taxa and of AMF diversity (no AMF, single AMF taxa and all four together) on competitive interactions between the legume Trifolium pratense and the grass Lolium multiflorum grown under two different soil conditions, showing low and high sand contents. We hypothesized that more diverse mutualistic interactions (e.g. when four AMF taxa are present) can ease competitive effects between plants, increase plant growth and maintain plant productivity across different soil environments. We used quantitative PCR to verify that AMF taxa inoculated at the beginning of the experiment were still present at the end. The presence of AMF reduced the competitive inequality between the two plant species by reducing the growth suppression of the legume by the grass. High AMF richness enhanced the combined biomass production of the two plant species and the yield of the legume, particularly in the more productive soil with low sand content. In the less productive (high sand content) soil, the single most effective AMF had an equally beneficial effect on plant productivity as the mixture of four AMF. Since contributions of single AMF to plant productivity varied between soil conditions, higher AMF richness.CAMERON WAGG ET AL. There is a great interest in ecology to understand the role of soil microbial 21 diversity for plant productivity and coexistence. Recent research has shown increases in 22 species richness of mutualistic soil fungi, the arbuscular mycorrhizal fungi (AMF), to be 23 related to increases in aboveground productivity of plant communities. However, the 24 impact of AMF richness on plant-plant interactions has not been determined. Moreover, 25 it is unknown whether species-rich AMF communities can act as insurance to maintain 26 productivity in a fluctuating environment (e.g. upon changing soil conditions). 27We tested the impact of four different AMF taxa and of AMF diversity (no AMF, 28single AMF taxa and all four together) on competitive interactions between the legume 29Trifolium pratense and the grass Lolium multiflorum grown under two different soil 30 conditions, showing low and high sand contents. We hypothesized that more diverse 31 mutualistic interactions (e.g. when four AMF taxa are present) can ease competitive 32 effects between plants, increase plant growth and maintain plant productivity across 33 different soil environments. We used quantitative PCR to verify that AM...

show abstract

Section: Competitive Interactions Between Host Plantsmentioning

confidence: 98%

Mycorrhizal fungal identity and diversity relaxes plant–plant competition

Wagg

Jansa

Stadler

et al. 2011

Ecology

244

202

View full text Add to dashboard Cite

show abstract

“…This is partly due to the difficulties associated with measuring root traits, particularly when incorporating them into a screening protocol for new cultivars. However, studies have indicated that root competition can be stronger than competition for light, particularly for nitrogen (Exley & Snaydon, ; Satorre & Snaydon, ; Lucas Bueno & Froud‐Williams, ; Stone et al ., ; Lamb et al ., ). Studies on other species have suggested that traits such as root length density, root elongation rate, number of root tips and total root length are determinants of competitive outcomes (Fargione & Tilman, ; Stevanato et al ., ).…”

Section: The Role Of Traits In Competitive Abilitymentioning

confidence: 99%

A review of the potential for competitive cereal cultivars as a tool in integrated weed management

2015

View full text Add to dashboard Cite

SummaryCompetitive crop cultivars offer a potentially cheap option to include in integrated weed management strategies (IWM). Although cultivars with high competitive potential have been identified amongst cereal crops, competitiveness has not traditionally been considered a priority for breeding or farmer cultivar choice. The challenge of managing herbicide‐resistant weed populations has, however, renewed interest in cultural weed control options, including competitive cultivars. We evaluated the current understanding of the traits that explain variability in competitive ability between cultivars, the relationship between suppression of weed neighbours and tolerance of their presence and the existence of trade‐offs between competitive ability and yield in weed‐free scenarios. A large number of relationships between competitive ability and plant traits have been reported in the literature, including plant height, speed of development, canopy architecture and partitioning of resources. There is uncertainty over the relationship between suppressive ability and tolerance, although tolerance is a less stable trait over seasons and locations. To realise the potential of competitive crop cultivars as a tool in IWM, a quick and simple‐to‐use protocol for assessing the competitive potential of new cultivars is required; it is likely that this will not be based on a single trait, but will need to capture the combined effect of multiple traits. A way needs to be found to make this information accessible to farmers, so that competitive cultivars can be better integrated into their weed control programmes.

show abstract

“…Wheat yield reduction exceeding 60% has been reported at Italian ryegrass densities of 93 plants/ m 2 (Appleby et al 1976). The competitive ability of Italian ryegrass contributes to reduced wheat photosynthesis, decreased tiller number, and reduced plant height, resulting in overall wheat yield loss (Carson et al 1999;Stone et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Identification, Distribution, and Control of Italian Ryegrass (Lolium multiflorum) Ecotypes with Varying Levels of Sensitivity to Triasulfuron in Texas

Tucker¹,

Morgan²,

Senseman³

et al. 2006

Weed technol.

Self Cite

View full text Add to dashboard Cite

Texas wheat producers have observed reduced efficacy and failure to control Italian ryegrass with registered rates of sulfonylurea herbicides that were previously effective. Growth chamber studies were conducted to quantify the sensitivity and distribution of Italian ryegrass ecotypes in Texas to triasulfuron and to determine alternative herbicide management options. Italian ryegrass seed samples were collected from over 40 wheat fields in 13 central and north Texas counties where declining Italian ryegrass control was reported by farmers following sulfonylurea herbicide application(s). Two-leaf Italian ryegrass was screened with an application of 150 g ai/ha triasulfuron, a rate five times the registered herbicide use rate. Sensitivity was determined by the response of an ecotype to that of a known susceptible population. Of the 48 Italian ryegrass ecotypes sampled, nine were comparable to susceptible standard, while the remaining 39 ecotypes were less sensitive to triasulfuron. Four of the least sensitive ecotypes to triasulfuron plus the susceptible standard were selected for a subsequent study. Diclofop, clodinafop, and metribuzin reduced fresh weights by at least 69, 71, and 62% across all ecotypes. No imazamox or triasulfuron treatment reduced fresh weights more than 60%.

show abstract

Above- and belowground interference of wheat (Triticum aestivum) by Italian ryegrass (Lolium multiflorum)

Cited by 28 publications

References 12 publications

Mycorrhizal fungal identity and diversity relaxes plant–plant competition

Mycorrhizal fungal identity and diversity relaxes plant–plant competition

A review of the potential for competitive cereal cultivars as a tool in integrated weed management

Identification, Distribution, and Control of Italian Ryegrass (Lolium multiflorum) Ecotypes with Varying Levels of Sensitivity to Triasulfuron in Texas

Contact Info

Product

Resources

About