Longevity of Barnyardgrass, Green Foxtail, and Yellow Foxtail Seeds in Soil

Dawson, J. H.; Bruns, V. F.

doi:10.1017/s0043174500062834

Cited by 73 publications

(61 citation statements)

References 2 publications

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“…1983 for Sorghum halepense. Seed dormancy and survival is consistent up to 18-21 months but from then onwards, replicates of shallow buried and surface seed were very variable, which has been previously pointed oul by other authors (Egley& Chandler, 1978;Dawson & Bruns, 1975).…”

Section: Discussionmentioning

confidence: 51%

Seed survival and patterns of seedling emergence in Sorghum halepense (L.) Pers.

Leguizamón

1986

Weed Research

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Three experiments were done on seed survival and patterns of seedling emergence in Sorglutni halepense (L.) Pers. Seeds in undisturbed soil survived for more than 6 years al a depth of 22-5 cm, but less than 2 years when buried in the upper layers. A rhythmie induced dormancy was detected in seeds placed in shallow layers in contrast to a permanently imposed dormancy exhibited by those buried in deep layers. Seed survival in soil subjected to different soil managements was less than 2-5 years. Seedling emergence was from September lo April, appearing in two main flushes regulated by temperature and rainfall. The short survival of seeds in the soil suggests that a large seed bank ean only be maintained by frequent inputs of seed. Survie des semences el proces.sus tie la levee chez le sorgho d'AlepTrois essais ont ete conduits sur ia survie des semences et le processus de la levee chez Sorghum halepense (L.) Pers. Les graines, dans un sol non travaillc, ont survecu pendant plus de 6 ans a 22,5 em de profondeur mais moins de 2 ans quand elles etaient enfouies dans les couches superieures. Une dormance rythmique induite a ete trouvce pour les graines placees dans les couches superieures, en opposition a une dormanee permanente obligatoire caracterisant les graines enterrees en profondeur. La survie des graines dans des sols soumis a differentes fagons culturales etait inlerieurc a 2.5 ans. La levee a eu lieu de Septembre a Avril, en deux vagues principales en relation avee la temperatureet la pluviometrie. La faible survie des graines dans le so! donne a penser qu'un stock grainier important ne peut etre maintenu que par des apports frequents de graines. Samenvorrai im Boden und Keimierhallen ionSorghum halepense (L.) Pers.

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Section: Discussionmentioning

confidence: 51%

Seed survival and patterns of seedling emergence in Sorghum halepense (L.) Pers.

Leguizamón

1986

Weed Research

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“…4 to the studies in Table 2B would be valid. Comparison of estimates of a for the Dawson and Bruns (1975) data with and without this approximation showed that the error it introduces can be large. However, since fitting persistence data in place of survival data should underesti-'E 100 mate a, the approximation can provide additional information on the lower limit of a in real systems.…”

Section: Curve Depth Referencementioning

confidence: 75%

“…A few studies (Stoller and Wax 1973, Proud-Williams et al 1983a, Moss 1985 provided coordinated information ori emergence and survival that was used to compute the response of seed survival to depth (Tables 2A and 3). In addition, the persistence data of Dawson and Bruns (1975) were adjusted to estimate seed survival by assuming that the total emergence reported all occurred during the 1st yr. Parameters were estimated by fitting Eq. 4 to data using nonlinear least squares regression without weighting.…”

Section: Curve Depth Referencementioning

confidence: 99%

A Model of the Effects of Tillage on Emergence of Weed Seedlings

Mohler¹

1993

Ecological Applications

177

162

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A simple model is developed in which the density of weed seedlings emerging in a field is related to (1) the ability of seedlings to emerge from various depths in the soil, (2) the survival of seeds at different depths, and (3) the depth of seed burial in no tillage, rotary tillage, and plow tillage. Other tillage regimes are considered by analogy. Literature is reviewed to determine biologically reasonable functions describing seedling emergence, seed survival, and distribution of seeds with depth, and parameters of these equations are estimated from data in the literature. Problems related to the mathematical description of these phenomena are discussed, and it is noted that some commonly held beliefs regarding survival of seeds in the soil are mutually incompatible. Although many studies have investigated the persistence of seeds as a function of depth in the soil, few have distinguished death from the production of seedlings. The model indicates that in the first year following input of seeds to the soil, no tillage will have more seedlings than tillage, but in later years no tillage will likely have fewer seedlings unless innate or induced dormancy is high or seed survival near the soil surface is unusually good. If seed return is allowed, no tillage or minimum tillage will have more seedlings perennially. Recovery of good weed control following a year with substantial seed input may be easiest if the soil is plowed deeply to bury the seeds, and then shallow or no tillage is used in subsequent years to avoid returning seeds to the surface. Much of the literature on the effects of tillage on weed density is difficult to interpret because little indication is given of the vertical distribution of seeds in the soil at the beginning of the experiment.

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“…We simulated dynamics of a weed species noted for seedbank persistence (Abutilon theophrasti Medicus, Lueschen and Andersen, 1980) and of a more transientseedbank species (Setaria viridis [L.] Beauv., Dawson and Bruns, 1975). Model parameter values for simulations were developed using data and observations from an ongoing study (Mortensen, 1990) of an experimental 4-yr crop rotation (oat/clover-corn-soybean-corn) established at Mead, Nebraska.…”

Section: Methodsmentioning

confidence: 99%

Simulation Analysis of Crop Rotation Effects on Weed Seedbanks

Jordan

Mortensen

Prenzlow

et al. 1995

American J of Botany

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A population-projection model was developed for a depth-structured weed seed population (employing tywsition matrices to model seed survival, germination, and vertical movement) and plant survival and seed production. Abutflon theophrasti and Setaria viridis seedbank dynamics were simulated in continuous com and in two crop rotations (com-soybean and oatl clover-com-soybean-com). Results suggest that crop rotation can nearly eliminate S. viridis seedbanks, while A. theophrasti seedbanks are less affected. Sensitivity analysis indicated that variation in seed survivorships over winter influenced population dynamics most strongly. Other seed survivorships were also highly influential, while plant survivorships and per-plant seed production had smaller effects. These results highlight the potential value of weed control measures aimed at seed. ApPENDIX 1.

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Longevity of Barnyardgrass, Green Foxtail, and Yellow Foxtail Seeds in Soil

Cited by 73 publications

References 2 publications

Seed survival and patterns of seedling emergence in Sorghum halepense (L.) Pers.

Seed survival and patterns of seedling emergence in Sorghum halepense (L.) Pers.

A Model of the Effects of Tillage on Emergence of Weed Seedlings

Simulation Analysis of Crop Rotation Effects on Weed Seedbanks

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