Managing soil nitrogen to restore annual grass-infested plant communities: effective strategy or incomplete framework?

James, Jeremy J.; Drenovsky, Rebecca E.; Monaco, Thomas A.; Rinella, Matthew J.

doi:10.1890/10-0280.1

Cited by 76 publications

(74 citation statements)

References 85 publications

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“…The rate remained higher during growth of D. ciliaris aimed at rapid acquisition of nutrients in environments without limitations is a feature associated with annual grasses in general (James et al, 2011).…”

Section: Resultsmentioning

confidence: 97%

Growth of the crabgrass species Digitaria ciliaris and Digitaria nuda

Souza¹,

Dias

Figueiredo

et al. 2012

Planta daninha

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-The aim of this research paper was to compare the growth of D. ciliaris and D. nuda crabgrass species under non-competitive conditions. To this end, two experiments were conducted, one from March -July 2010 and the other from February -June 2011. The experimental design of both trials was completely randomized making a factorial (2 seasons x 2 species crabgrass x 12 evaluation periods) with four replications. Assessments began at 15 days after sowing (DAS), and repeated weekly until 92 DAS. The variables evaluated were total dry matter (roots+leaves+stems), leaf area, leaf number and tiller. The results were submitted to analysis of variance and the absolute growth rate, relative growth rate and leaf area ratio were calculated using the means, which were adjusted regression models. The crabgrass species were significantly different in leaf area, leaf number, tiller number and dry matter per plant. D. ciliaris for all variables was statistically higher than D. nuda. Regarding the speed at which the growth of the species occurred, the absolute growth rate and relative growth rate of D. ciliaris was also greater than D. nuda. In addition, D. ciliaris also had a lower leaf area ratio indicating greater efficiency in converting light energy into carbohydrates. It can be concluded that D. ciliaris has a higher growth rate in conditions where there is no limitation of nutrients and water availability in relation to D. nuda, mainly due to D. ciliaris have greater leaf area, number of leaves and dry matter accumulation per plant.

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Section: Resultsmentioning

confidence: 97%

Growth of the crabgrass species Digitaria ciliaris and Digitaria nuda

Souza¹,

Dias

Figueiredo

et al. 2012

Planta daninha

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“…A number of investigators have found trends similar to those in our study where nitrogen addition reduced growth of native species and either enhanced or had no effect on non-indigenous, invasive species. In the western United States increases in growth of non-indigenous, annual grasses at the expense of native, perennial grasses is widely attributed to increases in nitrogen (see reviews by James et al 2011 andVasquez 2008). These trends are often found at relatively low levels of nitrogen supplementation; among the studies included in the review conducted by James et al…”

Section: Resultsmentioning

confidence: 99%

“…Increases in soil nitrogen deposition are often positively correlated with non-indigenous and indigenous invasive species fitness, establishment and spread (Abraham et al 2009, Bell and Treshow 2002, Burke and Grime 1996, Hobbs et al 1988, Metcalfe and Fowler 1998, SchererLorenzen et al 2000, Vasquez 2008, Wedin and Tilman 1996, McLendon and Redente 1991, Melgoza and Nowak 1991, Kolb et al 2002, Brooks 2003, Norton et al 2007, Vasquez 2008and references therein, MacKown et al 2009, James et al 2011 and references therein).…”

mentioning

confidence: 99%

Community and Ecosystem Effects of Buffelgrass (Pennisetum ciliare) and Nitrogen Deposition in the Sonoran Desert

Lyons

Maldonado-Leal

Owen

2013

Invasive plant sci. manag.

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Buffelgrass is a non-indigenous, invasive, C4 grass that was introduced throughout much of southern Texas, the Southwestern United States, and northern and central Mexico to improve degraded rangelands. The successful introduction and spread of buffelgrass follows a trajectory similar to that of other invasive C4 grasses in arid and semiarid ecosystems. In the Plains of Sonora of the Sonoran Desert (Mexico) buffelgrass is favored by widespread removal of native vegetation and seeding, but, why, following initial introduction, the species persists remains unclear. In this study, we addressed two concerns associated with buffelgrass invasion in the Plains of Sonora. We hypothesized that under arid rangeland conditions, buffelgrass outcompetes native herbaceous species (1) through rapid acquisition of limiting nutrients (here assumed to be nitrogen) and (2) under conditions with high nitrogen input. In summer 2002, a 2 by 2 factorial experiment was established with buffelgrass removal and nitrogen addition in both intact desert and converted buffelgrass grassland habitats. In winter 2003, we found that, regardless of habitat type, buffelgrass removal had a positive effect on abundance, biomass, and richness of native herbaceous species while addition of nitrogen, as urea (at 50 kg N ha−1yr−1 or 9.18 lbs N ac−1yr−1), and disturbance resulted in reduction in abundance and biomass. Nitrogen addition did not negatively alter buffelgrass cover. Nitrogen addition had the expected result of increasing initial, peak and total NO3 and NH4 mineralization with the exception of NO3 measures in intact desert. Removal of buffelgrass did not result in significant increases in soil NO3 or NH4 with the exception of peak NH4 in intact desert. Results of this study support observations that native herbaceous species are displaced by buffelgrass invasion and that nitrogen pollution will likely favor buffelgrass over the native herbaceous species in this ecosystem.

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“…As plantas daninhas, em geral, apresentam crescimento inicial rápido, com altas taxas de crescimento relativo nos 50 DAS, com objetivo de absorver nutrientes e se desenvolver em ambientes sem limitações, podendo assim se estabilizar no ambiente (RAVINDRA et al, 2008;JAMES et al, 2011;SALEHIAN;ESHAGHI, 2012).…”

Section: Análise De Crescimento De Espécies Daninhas Do Gênero Euphorbiaunclassified

Análise de crescimento de espécies daninhas do gênero Euphorbia

Ferreira

Silva

et al. 2017

AGRO@MBIENTE ON-LINE

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Resumo: Nos canaviais, espécies do gênero Euphorbia são relatadas como plantas daninhas capazes de reduzir a produtividade em até 85%. Para traçar estratégias corretas de controle dessas plantas é necessário o conhecimento tanto da sua biologia quanto do seu crescimento. Assim, objetivou-se com este trabalho avaliar o crescimento de três espécies daninhas do gênero Euphorbia ocorrentes nos canaviais. O estudo foi realizado em casa de vegetação, utilizando delineamento experimental inteiramente casualizado, em esquema de parcela subdividida, com cinco repetições. Os fatores foram três espécies de Euphorbia (E. heterophylla, E. hyssopifolia e E. hirta) e 13 períodos de avaliação: 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91 e 98 dias após a semeadura (DAS). Em cada avaliação foram mensuradas a altura da planta (AP), a área foliar (AF), o número de folhas (NF) e a matéria seca total (MST). Com valores médios de matéria seca da parte aérea (MSPA), MST e AF foram calculadas as taxas de crescimento absoluto (TCA) e relativo (TCR), a razão de área foliar (RAF) e a razão massa foliar (RMF). Os dados foram submetidos à análise de variância e à regressão não-linear. E. heterophylla foi maior em AP até os 63 DAS, a partir desse ponto, E. hyssopifolia ultrapassou obtendo maior altura dentre as espécies estudadas. E. heterophylla destacou-se por ter maior acúmulo de AF, MST e TCA dentre as espécies estudadas, seguida da E. hyssopifolia e E. hirta. O ponto máximo de crescimento das espécies avaliadas ocorreu aos 77 DAS. Dentre as espécies estudadas, E. heterophylla apresenta maior crescimento e desenvolvimento. Palavras-chave: Análise de crescimento. E. heterophylla. E. hyssopifolia. E. hirta. Massa seca.Abstract: In sugarcane plantations, species of the genus Euphorbia are reported as weeds able to reduce productivity by up to 85%. Planning the correct strategies for controlling these plants requires knowledge of their biology and growth. The aim of this work therefore, was to evaluate the growth of three weed species of the genus Euphorbia occurring in sugarcane plantations. The study was carried out in a greenhouse, using a completely randomised experimental design in a scheme of lots subdivided over time, with five replications. The factors were three species of Euphorbia (E. heterophylla, E. hyssopifolia and E. hirta) and 13 periods of evaluation 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91 and 98 days after sowing (DAS). Each evaluation measured plant height (PH), leaf area (LA), number of leaves (NL) and total dry matter (TDM). From the mean values for shoot dry matter (SDM), TDM and LA, the absolute growth rate (AGR) and relative growth rate (RGR), leaf area ratio (LAR), and leaf weight ratio (LWR) were calculated. Data were submitted to analysis of variance and non-linear regression. E. heterophylla displayed greater PH up to 63 DAS, from this point E. hyssopifolia obtained greater height among the species under study. E. heterophylla was noteworthy for having a greater accumulation of LA, TDM and AGR among the ...

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Managing soil nitrogen to restore annual grass-infested plant communities: effective strategy or incomplete framework?

Cited by 76 publications

References 85 publications

Growth of the crabgrass species Digitaria ciliaris and Digitaria nuda

Growth of the crabgrass species Digitaria ciliaris and Digitaria nuda

Community and Ecosystem Effects of Buffelgrass (Pennisetum ciliare) and Nitrogen Deposition in the Sonoran Desert

Análise de crescimento de espécies daninhas do gênero Euphorbia

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