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Evaluation Of Herbicides For Saltcedar Control In Southwest Kansas, W. H. Fick
Evaluation Of Herbicides For Saltcedar Control In Southwest Kansas, W. H. Fick
IGC Proceedings (1993-2023)
Saltcedar is an invasive species along some of the major rivers and tributaries in Kansas. The objective of this study is to determine control of saltcedar in southwestern Kansas using herbicides applied to individual trees as cut-stump, basal, and foliar treatments. Cut-stump treatments were applied in 2004-2010 during the months of April or May. Basal applications with 10% triclopyr in diesel were applied between 2007-2021 during the months of August through early October. Foliar treatments were applied during 2008-2021 using 467 L/ha spray volumes during August through early October. Chi square analysis at P < 0.05 was used to compare treatments. In initial studies, imazapyr (Arsenal) at 10% v/v in water, triclopyr (Remedy) at 10% v/v in diesel, and undiluted triclopyr (Pathfinder II) provided 80- 100% control of saltcedar, and were more effective than triclopyr + 2,4-D (Crossbow) applied as a 4% v/v solution in diesel (60% control). During 2008-2010, 10% imazapyr, 50% glyphosate, glyphosate + imazapyr (0.5% + 0.5%), triclopyr at 10 or 25%, and a mixture of triclopyr + fluroxypyr (PastureGard) at 25% all provided greater than 91% control of saltcedar. Basal bark control using 10% v/v triclopyr in diesel averaged 72% control. Foliar applications with 0.5 or 1% imazapyr and 0.5% + 1% imazapyr + glyphosate all provided greater than 84% control of saltcedar treated in 2008-2011. Imazapic (Plateau) at 1% was first compared with 1% imazapyr during 2014-2016 with both treatments providing about 80% control. During 2017-2021, 1% imazapyr (82% control), 1% imazapic (79% control), and 0.5% + 0.5% imazapyr + glyphosate (92% control) were all more effective than a combination of aminopyralid (Milestone) + triclopyr applied at 239 g/L + 359 g/L (42% control). Herbicides can be applied as cutstump, basal bark, or foliar treatments for the control of saltcedar.
Assessing The Usefulness Of Senna Obtusifolia, An Invasive Plant Species In West Africa Rangelands, A. Zaré, O. Ouédraogo, A. Linstädter
Assessing The Usefulness Of Senna Obtusifolia, An Invasive Plant Species In West Africa Rangelands, A. Zaré, O. Ouédraogo, A. Linstädter
IGC Proceedings (1993-2023)
Senna obtusifolia is a less appreciated plant species. Its invasion has led to the disappearance of several herbaceous species of interest in West Africa rangelands. As adaptation strategy, people use it to substitute for those that have disappeared. This study aimed to assess the importance of this species for animal and local ethnic groups according to two contrast climate zones in Burkina Faso. Ethnobotanic survey mixed with direct observations on the field were conducted. Three hundred (300) people from height (8) ethnic groups were interviewed. The survey technique was semi-structured interviews using a previously tested semi-structured questionnaire. At the early …
Soil Biology And The Emergence Of Adventive Grassland Ecosystems, T. R. Seastedt
Soil Biology And The Emergence Of Adventive Grassland Ecosystems, T. R. Seastedt
IGC Proceedings (1993-2023)
The last few years have seen an explosion of information on the responses and feedbacks of soil biota to species and environmental changes. Soil biologists, plant ecologists, and biogeochemists have been searching for patterns, generality and predictability in these relationships. A few brave souls have had the courage to assemble comprehensive assessments of soil biology in our rapidly changing world. Several years ago, I reviewed Wardle’s (2002) book emphasising the links between above- and belowground components of ecosystems. That activity – as well as the present one – provided me with the opportunity to survey recent findings in soil biology. …
Feature Papers In Horticulturae, Douglas D. Archbold
Feature Papers In Horticulturae, Douglas D. Archbold
Horticulture Faculty Publications
No abstract provided.
Effects Of Parthenium Hysterophorus On Grassland Community In Nyando Sub-County, Kisumu County, Kenya, B. M. Mutua, W. Chiuri
Effects Of Parthenium Hysterophorus On Grassland Community In Nyando Sub-County, Kisumu County, Kenya, B. M. Mutua, W. Chiuri
IGC Proceedings (1993-2023)
Parthenium hysterophorus is an invasive alien species native to South and Central America. The plant is ranked as one of the most dreaded weeds of the world. Parthenium hysterophorus affects grassland community through the release of allelochemicals that inhibit the germination and growth of grass species. However, little is known about its effects on native grassland community in Nyando sub-county of Kenya. Therefore, this study sought to investigate the effects of P. hysterophorus on grass species, livestock production and its control. A total of 121 farm household heads were interviewed using semi-structured interview schedules. Descriptive analysis and the T-test at …
Unpalatable Perennial Grass Invasion In Central-East Argentina Native Grasslands: Processes, Implications And Recovery, Roberto A. Distel
Unpalatable Perennial Grass Invasion In Central-East Argentina Native Grasslands: Processes, Implications And Recovery, Roberto A. Distel
IGC Proceedings (1993-2023)
In temperate semiarid central-east Argentina, unpalatable perennial grasses (UPG) have been steadily invading native grasslands formerly dominated by palatable perennial grasses (PPG). The objective of this contribution is to provide a synthesis of underlying processes and implications of UPG invasion, as well as recovery strategies. Results have shown that heavy selective grazing on PPG reduces their superior competitive ability. Gaps formed due to reduced competition by PPG provide safe sites for UPG establishment. The development of large, long-lived tussock of UPG, in combination with high standing crop accumulation, impairs PPG establishment even in absence of grazing. UPG produce sclerophyllous tissues, …
Japanese Beetles’ Feeding On Milkweed Flowers May Compromise Efforts To Restore Monarch Butterfly Habitat, Adam M. Baker, Daniel A. Potter
Japanese Beetles’ Feeding On Milkweed Flowers May Compromise Efforts To Restore Monarch Butterfly Habitat, Adam M. Baker, Daniel A. Potter
Entomology Faculty Publications
The eastern North American migratory population of monarch butterflies (Danaus plexippus) is in serious decline. Habitat restoration, including adding millions of host plants to compensate for loss of milkweed in US cropland, is a key part of the international conservation strategy to return this iconic butterfly to sustainable status. We report here that Popillia japonica, a polyphagous, invasive beetle, aggregates and feeds on flowers of Asclepias syriaca, the monarch’s most important larval food plant, reducing fruiting and seed set by >90% and extensively damaging milkweed umbels in the field. The beetle’s ongoing incursion into the monarch’s …
Does Fungal Endophyte Infection Improve Tall Fescue’S Growth Response To Fire And Water Limitation?, Sarah L. Hall, Rebecca L. Mcculley, Robert J. Barney, Timothy D. Phillips
Does Fungal Endophyte Infection Improve Tall Fescue’S Growth Response To Fire And Water Limitation?, Sarah L. Hall, Rebecca L. Mcculley, Robert J. Barney, Timothy D. Phillips
Plant and Soil Sciences Faculty Publications
Invasive species may owe some of their success in competing and co-existing with native species to microbial symbioses they are capable of forming. Tall fescue is a cool-season, non-native, invasive grass capable of co-existing with native warm-season grasses in North American grasslands that frequently experience fire, drought, and cold winters, conditions to which the native species should be better-adapted than tall fescue. We hypothesized that tall fescue’s ability to form a symbiosis with Neotyphodium coenophialum, an aboveground fungal endophyte, may enhance its environmental stress tolerance and persistence in these environments. We used a greenhouse experiment to examine the effects …