Modeling invasive weeds in grasslands: the role of allelopathy in Acroptilon repens invasion

Goslee, Sarah C.; Peters, Debra P. C.; Beck, Krzysztof

doi:10.1016/s0304-3800(01)00231-9

Cited by 59 publications

(39 citation statements)

References 31 publications

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“…A relationship between soil properties (mostly soil texture) and the spread of the knapweed species has been noted (Goslee et at., 2001;Grant et al, 2003;Hierro and Callaway, 2003). Yet, very little is known about the sorption of (+/-)-catechin and 7,8-benzoflavone in soil.…”

Section: Introductionmentioning

confidence: 98%

Bioavailability of Allelochemicals in Soil

Grossl¹

2008

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Section: Introductionmentioning

confidence: 98%

Bioavailability of Allelochemicals in Soil

Grossl¹

2008

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“…In recent years, about 90% of the natural grassland in Qinghai Province has degenerated to different degrees [7], due to both overgrazing and human activities [8]. Degeneration of grassland caused an increase of toxic grasses in terms of species and quantity, a decrease of pasture productivity, and a decline in stocking capacity [9,10]. The rapid ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

IKONOS Image-Based Extraction of the Distribution Area of Stellera chamaejasme L. in Qilian County of Qinghai Province, China

Liu

et al. 2016

Remote Sensing

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Stellera chamaejasme L. (S. chamaejasme) is one of the primary toxic grass species (poisonous plants) distributed in the alpine meadows of Qinghai Province, China. In this study, according to the distinctive phenological characteristics of S. chamaejasme, the spectral differences between S. chamaejasme in the full-bloom stage and other pasture grasses were analyzed and the red, blue, and near-infrared bands of IKONOS image were determined as the diagnostic bands of S. chamaejasme recognition. Feature indexes related to S. chamaejasme were established using the diagnostic bands, and NDV I blue " pρ nir´ρblue q { pρ nir`ρblue q obtained as S. chamaejasme sensitive index based on the linear regression analysis between the indexes derived from field spectra and the actual cover fraction of S. chamaejasme communities. The distribution area of S. chamaejasme was extracted by using the index NDV I blue derived from IKONOS multispectral image in Qilian County of Qinghai Province, China and the verified result reached an overall accuracy of 90.71%. The study indicated that high resolution multispectral satellite images (such as IKONOS images) had significant potential in remote sensing recognition of toxic grass species.

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“…Its highly competitive nature and broad ecological adaptability make it a persistent weed problem in North America (Goslee et al, 2001). Allelopathy interactions are primarily based on the ability of certain plant species to produce secondary chemical compounds, that exert some sort of biological effects on other organisms, many of which are still unknown (Waller, 2004).…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Effect of Powdered Russian Knapweed (Acroptilon repens L.) on the Growth Parameters of Redroot Amaranth (Amaranthus retroflexus L.)

Пирзад

Jamali²,

Zareh³

et al. 2013

Not Sci Biol

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To evaluate probable allelopathic effect of different parts of Russian knapweed (Acroptilon repens L.) on the growth of redroot amaranth (Amaranthus retroflexus L.) seedling, a factorial experiment was conducted based on randomized complete block design with three replications at the Faculty of Agriculture, Urmia University in 2012 (Iran). In this experiment, treatments were different parts of Russian knapweed (aerial part, flower and root) in different amounts (1, 2, 3 and 4 g/pot). Pots included 300 g of soil. Results showed the significant effect of Russian knapweed plant parts on the seedling emergence percent, root length, ratio of root/shoot length, seedling length, seedling fresh weight, and the significant effect of plant material amounts on the seedling emergence percent, seedling fresh weight and seedling dry weight. Interaction effect between plant material type and amount on the shoot length, root length, ratio of root/shoot length, seedling length was significant, too. The longest shoot (3.51 cm), root (1.75 cm), the highest ratio of root/shoot length (0.49) and seedling length (5.26 cm) belonged to control treatment. The highest seedling emergence percent of Amaranthus retroflexus (34.73%) and seedling fresh weight (0.176 g) were occurred at pots treated by Russian knapweed aerial part. The lowest seedling emergence percent (21.94 %) and seedling fresh weight (0.111 g) were obtained from application of Acroptilon repens powdered root. The maximum seedling dry (0.0126 g) and fresh (0.177 g) weight of Amaranthus retroflexus were obtained from control treatment.

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Modeling invasive weeds in grasslands: the role of allelopathy in Acroptilon repens invasion

Cited by 59 publications

References 31 publications

Bioavailability of Allelochemicals in Soil

Bioavailability of Allelochemicals in Soil

IKONOS Image-Based Extraction of the Distribution Area of Stellera chamaejasme L. in Qilian County of Qinghai Province, China

Allelopathic Effect of Powdered Russian Knapweed (Acroptilon repens L.) on the Growth Parameters of Redroot Amaranth (Amaranthus retroflexus L.)

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