velvetleaf (abutilon theophrasti medik.) productivity in competitive conditions
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2017
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Abstract
Velvetleaf (Abutilon theophrasti Medik.) is an invasive alien species in many
countries and one of the major weeds in summer row crops worldwide.
Weed-management techniques that reduce weed production need to be
investigated to provide new approaches. The first step in this process is the
determination of weed productivity in different competitive conditions. Field
experiments were conducted in 2006 and 2008 in an experimental field in
Padinska Skela to quantify growth and seed production of velvetleaf in maize,
as well as in a velvetleaf monoculture. A density of velvetleaf ranging from
1 to 8 plants m-1 was artificially created. In a mixture with maize,
velvetleaf was sown in crop rows. The growth of velvetleaf was estimated
based on plant height, fresh aboveground biomass and leaf area index (LAI).
Velvetleaf fecundity was determined as seed mass plant-1 and seed mass m-2.
Differences between years in plant production were very prominent. In
general, velvetleaf productivity in maize depended on its density.
Intraspecific competition had a major influence on growth and seed production
when velvetleaf density was from 4 to 8 plants m-1 in maize rows. This
information indicates that environmental conditions and weed density can
promote/reduce inter- and intraspecific competition and help in the
construction of population dynamics models to predict population density,
seed bank and competitiveness of weeds and reduce inputs for weed management.
[Projekat Ministarstva nauke Republike Srbije, br. III 46008, br. TR31073 i
br.173018 and EU-FP7-REGPOT-AREA Project No 316004]
| Reference Key |
sava2017archivesvelvetleaf
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|---|---|
| Authors | ;Vrbničanin Sava;Onć-Jovanović Eleonora;Božić Dragana;Sarić-Krsmanović Marija;Pavlović Danijela;Malidža Goran;Jarić Snežana |
| Journal | gastrointestinal endoscopy |
| Year | 2017 |
| DOI |
10.2298/ABS160212092V
|
| URL | |
| Keywords |
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