Weed Control in Sericea Lespedeza PDF Download

Author: Albert Ernest Smith
Publisher:
ISBN:
Category : Lespedeza cuneata
Languages : en
Pages : 24

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Author: Gale A. Buchanan
Publisher:
ISBN:
Category : Lespedeza cuneata
Languages : en
Pages : 15

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Author: James Daniel Jones
Publisher:
ISBN:
Category : Forage plants
Languages : en
Pages : 310

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Author: Walter J. Guernsey
Publisher:
ISBN:
Category : Lespedeza cuneata
Languages : en
Pages : 36

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Author: Eric Ntiamoah
Publisher: GRIN Verlag
ISBN: 3346113604
Category : Science
Languages : en
Pages : 56

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Master's Thesis from the year 2017 in the subject Biology - Botany, grade: 3.6, Southern Illinois University at Edwardsville (Graduate School), course: Environmental Science, language: English, abstract: Sericea lespedeza is an aggressive invasive plant which can suppress and displace native plant species in grasslands and prairies in the United States. The goal of the study is to determine how large the seed bank of lespedeza might be. Furthermore, the author tries to determine if a pre-emergent herbicide treatment could suppress Lespedeza germination and whether this provided benefits to a typical native species propagated into the site. In the work, the author first characterized the soil seed bank at different invaded sites on SIUE campus using the seedling emergence method. In the second part, the author assessed the success of a pre-emergent herbicide in preventing the germination of lespedeza seed bank after lespedeza removal. The growth of a native grass (Sorghastrum nutans) as a replacement species has also been evaluated. Currently Sericea lespedeza is rapidly spreading throughout the U.S and has been estimated to eventually invade about 61percent of the total land area. Lespedeza has become a successful colonizer because of its ability to tolerate and thrive under a wide range of environmental and soil conditions. Once established, lespedeza is very difficult to remove due to its persistent seed bank which can remain viable for years. To successfully control lespedeza, we must find effective ways to suppress or kill seeds in the soil, but this has received little research attention.

Author:
Publisher:
ISBN:
Category : Lespedeza cuneata
Languages : en
Pages : 2

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Author: Garth Arnold Gatson
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The largest intact remnant of the tallgrass prairie, the Flint Hills ecoregion, is currently under threat from the invasive weed sericea lespedeza (Lespedeza cuneata [Dumont] G. Don; SL). The objectives of this research were to evaluate the efficacy of late-season prescribed burning and fall herbicide application, alone and in concert, for comprehensive control of sericea lespedeza and to assess their broader treatment impacts on native plant communities. A 31-ha native tallgrass pasture with a light to moderate infestation of SL was divided into 16 subunits for this experiment. Each subunit was randomly assigned to 1 of 4 treatments: negative control, spray-only, burn-only, or burn-plus-spray. A prescribed burn was conducted on burn-only and burn-plus-spray subunits in early September 2016. Following the re-emergence of SL, spray-only and burn-plus-spray subunits received a broadcast application of metsulfuron methyl (Escort XP, DuPont, Wilmington, DE) at a rate of 70.1 g ˖ ha−1 in late September. Frequency and vigor of SL, total forage biomass, soil cover, and plant species composition were measured along permanent 100-m transects in each subunit prior to treatment application and again 12 mo later, in 2017 (i.e., 1 YAT). In 30 x 30-cm plots at 1-m intervals along each transect, the presence or absence of SL was noted. Where SL was present, crown maturity and maximum stem length of the SL plant nearest to the transect were recorded. Presence of multiple stems in plots was also recorded. Prior to treatment application, SL comprised 1 ± 2.0% of total basal cover and was not different between treatments (P = 0.38). One YAT, SL was more abundant (P ≤ 0.02) in negative control subunits than in spray-only, burn-only, or burn-plus-spray subunits, which were not different (P ≥ 0.95) from one another. Aerial frequency of SL, abundance of mature SL crowns, and incidence of plots with multiple SL stems were greatest (P ≤ 0.03) for negative controls, although not different (P ≥ 0.50) between the other 3 treatments. The change in forage biomass production 1 YAT did not differ (P = 0.16) between treatments. A tendency (P = 0.06) for a shift from litter cover to bare soil was noted when the spray-only, burn-only, and burn-plus-spray treatments were compared to the negative control. Graminoid basal cover was greater (P

Author: Robert Ruark
Publisher: Macmillan
ISBN: 9780805026696
Category : Fiction
Languages : en
Pages : 320

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Journalist Robert Ruark tells of the friendship between a young boy and his grandfather as they hunt and fish in North Carolina

Author: Eric Lissner Ntiamoah
Publisher:
ISBN:
Category : Grassland restoration
Languages : en
Pages : 46

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Book Description
Sericea lespedeza is an aggressive invasive plant which can suppress and displace native plant species in grasslands and prairies in the United States. Currently is rapidly spreading throughout the U.S and has been estimated to eventually invade about 61% of the total land area. Lespedeza has become a successful colonizer because of its ability to tolerate and thrive under a wide range of environmental and soil conditions. Once established, lespedeza is very difficult to remove due to its persistent seed bank which can remain viable for years. To successfully control lespedeza, we must find effective ways to suppress or kill seeds in the soil, but this has received little research attention. In our work, we first characterized the soil seed bank at different invaded sites on SIUE campus using the seedling emergence method. In the second part of this research, we assessed the success of a pre-emergent herbicide (Preen®) in preventing the germination of lespedeza seed bank after lespedeza removal. We also evaluated the growth of a native grass (Sorghastrum nutans) as a replacement species. The results from the soil seed bank study showed that lespedeza germinates rapidly (

Author: Jennifer N. Smith
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 65

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Sericea (Lespedeza cuneata) is an invasive, perennial legume that suppresses native plant species and threatens native grasslands in the Great Plains. Although much is known about L. cuneata, population demographics (survival, growth, reproduction, and population growth rates) have never been assessed over realistic temporal and spatial scales. Population matrix models and perturbation analyses are useful in investigating underlying demographics and determining targeted management options. For two growing seasons, I quantified L. cuneata vital rates across eight, large-scale ranching operations in the Kansas Flint Hills representing seventeen populations, four cattle management regimes and three soil fertility types. Furthermore, I determined how herbicide application affected the population structure. Though soil fertility had no effect on L. cuneata vital rates, seedling survivorship was significantly higher in pastures with stocker than cow-calf cattle. Survivorship was lower for juveniles (~69%) than mature plants (~93%). When exposed to herbicide, the average survivorship across life stages was reduced by 67%. Reproduction was variable but high and on average comprised of 25 chasmogamous (outcross-pollinated) and 235 cleistogamous (self-pollinated) seeds/stem. The proportion of chasmogamous seeds produced/plant increased with increasing soil fertility under cow-calf grazing only. Population growth rates (?) were variable, ranged from 0.8 to 3.9, and emphasized the need to include multiple populations in demographic studies. Given low juvenile survivorship, preliminary results suggest control efforts focus on mature plants regardless of soil fertility type or cattle management. However, these responses need to be verified over additional years to better predict bioeconomic impacts and guide weed management decisions.