Weed Seed Rain Dynamics and Ecological Control Ability in Agrophytocenosis

Pilipavičius, Vytautas

doi:10.5772/55972

Cited by 3 publications

(5 citation statements)

References 19 publications

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“…Albrecht (2005) found that the number of weed seeds increased at sites with low crop cover and high density of weed plants at the soil surface. Earlier harvesting of spring barley at the milky stage of maturity essentially decreased the reserves of the soil seed bank (Pilipavičius, 2013).…”

Section: Introductionmentioning

confidence: 99%

Changes in weed seed bank and flora as affected by soil tillage systems

Auškalnienė

Kadžienė

Janušauskaitė

et al. 2018

Zemdirbyste-Agriculture

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Tillage not only changes soil properties but also serves as a weed control means. Different soil tillage systems were investigated in a long-term field experiment conducted during 2003-2012 at Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry. The experiment was carried out in a cereal-based crop rotation. The experimental design included the following tillage treatments: 1) conventional tillage (CT): mouldboard ploughing at 22-24 cm depth; 2) minimum tillage (MT): stubble cultivation at 10-12 cm depth, non-selective herbicide (glyphosate) spray applied after harvesting; 3) no tillage (NT): direct drilling, non-selective herbicide spray applied after harvesting. This paper presents the data from the 2007-2012 experimental period. To determine weed seed bank, soil samples were taken in 2007 after spring barley harvesting and in 2012 after winter oilseed rape harvesting. Samples of weeds for the determination of fresh and dry mass were collected in 2011 and 2012 in winter wheat and winter oilseed rape crops during the growing period. The weed seed bank in the soil significantly decreased over the five-year period. However, significantly the highest number of seeds in the soil was found in the no tillage plots. Significant differences in the weed species composition between the different tillage systems were recorded: no tillage system promoted infestation of some broadleaf weeds, particularly Capsella bursa-pastoris. The lowest weed mass was determined for the conventional tillage plots, compared to minimum tillage, and especially no tillage plots.

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Section: Introductionmentioning

confidence: 99%

Changes in weed seed bank and flora as affected by soil tillage systems

Auškalnienė

Kadžienė

Janušauskaitė

et al. 2018

Zemdirbyste-Agriculture

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“…This relationship was stronger for the granivorous carabids than for the other carabid groups studied, possibly because dominant granivores like H. affinis and H. rufipes consume substantial quantities of P. annua seeds 20,42 , while omnivores such as P. melanarius may consume fewer 43 . The positive association between predation rates and AD of omnivorous, seed-eating and all carabids was only significant during session 2 (Table 3), possibly due to changes in the diet of the carabids over time, and to greater consumption of seeds towards the end of the season 41 . These results suggest that all carabid guilds contribute to seed predation in sampling session 2, in contrast to session 1 where only specialist granivores were found to be related to the predation rate on the seed cards.…”

Section: Discussionmentioning

confidence: 99%

“…We found indication of the regulation of the seedbank by carabids present in session 2, just prior to harvest. Weed seed shed and dispersal intensifies during the course of the crop growing period to harvest 41 . It seems likely that carabid communities would therefore have the greatest effect in the window just prior the harvest, when weed seeds on the soil surface may have accumulated, rather than earlier in the crop-growing period.…”

Section: Discussionmentioning

confidence: 99%

The resilience of weed seedbank regulation by carabid beetles, at continental scales, to alternative prey

Carbonne

Petit

Neidel

et al. 2020

Sci Rep

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Carabids are generalist predators that contribute to the agricultural ecosystem service of seedbank regulation via weed seed predation. To facilitate adoption of this ecosystem services by farmers, knowledge of weed seed predation and the resilience of seedbank regulation with co-varying availability of alternative prey is crucial. Using assessments of the seedbank and predation on seed cards in 57 cereal fields across Europe, we demonstrate a regulatory effect on the soil seedbank, at a continental scale, by groups formed of omnivore, seed-eating (granivore + omnivore) and all species of carabids just prior to the crop-harvest. Regulation was associated with a positive relationship between the activity-density of carabids and seed predation, as measured on seed cards. We found that per capita seed consumption on the cards co-varied negatively with the biomass of alternative prey, i.e. Aphididae, Collembola and total alternative prey biomass. Our results underline the importance of weed seedbank regulation by carabids, across geographically significant scales, and indicate that the effectiveness of this biocontrol may depend on the availability of alternative prey that disrupt the weed seed predation.

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“…Climate of the Lithuanian territory forms in different radiation and circulation conditions. Differences in these conditions hardly cross the boundaries of microclimatic differences; therefore, Lithuania belongs to western region of the Atlantic Ocean continental climatic area [45,52] with average annual precipitation of 675 mm (572-907 mm) and temperature of 6-7 o C [53,54].…”

Section: Methodsmentioning

confidence: 99%

“…Even short-time brief changes of meteorological conditions in crop during vegetation are inducing mechanism of plant/weed adaptivity. Namely, weed seed rain in the crop regularly intensified with increase of temperature and sunlight duration and vice versa [45,46]. Under heavily polluted or dark cloudy skies, plant productivity may decline as the diffuse effect is insufficient to offset decreased surface irradiance [47].…”

Section: Complex Effect Of Uv-b Radiation and Temperaturementioning

confidence: 99%

Influence of Climate Change on Weed Vegetation

Pilipavičius¹

2015

Global Warming - Causes, Impacts and Remedies

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Weed Seed Rain Dynamics and Ecological Control Ability in Agrophytocenosis

Cited by 3 publications

References 19 publications

Changes in weed seed bank and flora as affected by soil tillage systems

Changes in weed seed bank and flora as affected by soil tillage systems

The resilience of weed seedbank regulation by carabid beetles, at continental scales, to alternative prey

Influence of Climate Change on Weed Vegetation

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