Assessing potential germination period of weeds with base temperatures and base water potentials

Guillemin, J. P.; Gardarin, Antoine; Granger, Sylvie; Reibel, Carole; Munier‐Jolain, Nicolas; Colbach, Nathalie

doi:10.1111/wre.12000

Cited by 98 publications

(113 citation statements)

References 32 publications

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“…The values of t b estimated for batches 1 of a. retroflexus (10.0 ± 1.30°C to 12.3 ± 0.40°C) were slightly lower than those for batches 2 (12.0 ± 1.27°C to 12.9 ± 0.37°C), but no significant differences could be detected. Moreover, all these values were in complete agreement with previous findings obtained on two Italian populations of a. retroflexus (Masin et al 2010) while a significantly lower t b value of about 9°C was reported by Guillemin et al (2013) for a French population. Regarding a. hybridus, no proper value of t b has ever been reported but a previous study observed little germination at 10°C and none at 5°C (Steckel et al 2004), supporting the range of t b estimated in the present experiment (7.6 ± 1.73°C to 9.6 ± 0.25°C).…”

Section: Discussionsupporting

confidence: 92%

Base temperatures for germination of selected weed species in Iran

Loddo¹,

Ghaderi–Far²,

Rastegar³

et al. 2018

Plant Prot. Sci.

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Loddo D., Ghaderi-Far F., Rastegar Z., Masin R. (2018): Base temperatures for germination of selected weed species in Iran. Plant Protect. Sci., 54: 60-66.Weed emergence models require the estimation of base temperature for germination (t b ) that was estimated for abutilon theophrasti, echinochloa crus-galli, amaranthus retroflexus, sorghum halepense, amaranthus albus, and amaranthus hybridus in Iran, to calibrate an existing model called AlertInf. Two statistical procedures were adopted: Model 1 -linear regression of germination rate and Model 2 -probit analysis. Model 1 provided lower t b values. abutilon theophrasti and a. hybridus presented lower t b values (about 4 and 8°C), while the remaining species had values above 10°C. Since the estimated values of t b were in agreement with those adopted for the Alertinf model in Italy, the first step was achieved to adapt AlertInf to Iranian conditions.

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Section: Discussionsupporting

confidence: 92%

Base temperatures for germination of selected weed species in Iran

Loddo¹,

Ghaderi–Far²,

Rastegar³

et al. 2018

Plant Prot. Sci.

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“…Estudo realizado por Guillemin et al (2013) A elevada amplitude dos valores de germinação entre temperaturas encontrada neste estudo pode estar associada ao grau de dormência presente nas sementes, sobretudo nas primeiras épocas de avaliação após a colheita delas. A dormência em sementes é uma característica comum de muitas espécies de plantas daninhas e de grande importância ecológica, destacando-se que a quebra da dormência nas sementes pode ser proporcionada por diversos fatores, principalmente luz, temperatura de incubação, estratificação por frio e nitrogênio (Tang et al, 2008).…”

Section: Resultsunclassified

“…O potencial de germinação da semente e emergência de uma plântula é determinado pela combinação de vários elementos, como temperatura do solo, potencial hídrico, luz, condições gasosas e teor de nitrato (Guillemin et al, 2013). A temperatura é provavelmente o principal fator ambiental que controla a germinação, tanto em culturas quanto em plantas daninhas, atuando diretamente na porcentagem e na taxa de germinação -isso quando outros fatores essenciais para esse processo não estão limitantes no meio (Martinkova et al, 2006).…”

Section: Introductionunclassified

Germinação De Sementes De Capim-Arroz Submetidas a Condições De Luz E Temperatura

et al. 2015

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“…Early emergence of common ragweed likely reflects its specific soil temperature and moisture germination requirements (Guillemin et al 2013). Shepherd's-purse [Capsella bursa-pastoris (L.) Medik.…”

Section: Timings That Resulted In Similar Weedmentioning

confidence: 99%

Timing of Tillage as a Driver of Weed Communities

et al. 2017

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Tillage is a foundational management practice in many cropping systems. Although effective at reducing weed populations and preparing a crop seedbed, tillage and cultivation can also dramatically alter weed community composition. We examined the impact of soil tillage timing on weed community structure at four sites across the northeastern United States. Soil was tilled every 2 wk throughout the growing season (late April to late September 2013), and weed seedling density was quantified by species 6 wk after each tillage event. We used a randomized complete block design with four replicates for each tillage-timing treatment; a total of 196 plots were sampled. The timing of tillage was an important factor in shaping weed community composition and structure at all sites. We identified three main periods of tillage timing that resulted in similar communities. Across all sites, total weed density tended to be greatest and weed evenness tended to be lowest when soils were tilled early in the growing season. From the earliest to latest group of timings, total abundance decreased on average from 428 ± 393 to 159 ± 189 plants m −2 , and evenness increased from 0.53 ± 0.25 to 0.72 ± 0.20. The effect of tillage timing on weed species richness varied by site. Our results show that tillage timing affects weed community structure, suggesting that farmers can manage weed communities and the potential for weed interference by adjusting the timing of their tillage and cropping practices.

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Assessing potential germination period of weeds with base temperatures and base water potentials

Abstract: International audienc

Cited by 98 publications

References 32 publications

Base temperatures for germination of selected weed species in Iran

Base temperatures for germination of selected weed species in Iran

Germinação De Sementes De Capim-Arroz Submetidas a Condições De Luz E Temperatura

Timing of Tillage as a Driver of Weed Communities

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