International Journal of Pest Management (2015) 61, 228-234

Ioanna Kakabouki, Anestis Karkanis, Ilias S. Travlos, Dimitra Hela, Panagiota Papastylianou, Hanwen Wu, Demosthenis Chachalis, Radu Sestras and Dimitrios Bilalis (2015)
Weed flora and seed yield in quinoa crop (Chenopodium quinoa Willd.) as affected by tillage systems and fertilization practices
International Journal of Pest Management 61 (3), 228-234
Abstract: The effects of tillage system and fertilization regimes on weed flora in quinoa (Chenopodium quinoa Willd.) were evaluated by means of two field experiments in 2011 and 2012. The experiments were laid out in a split-plot design with two main plots (conventional and minimum tillage) and four sub-plots (fertilization regimes). The results indicated that weed biomass and density in quinoa were influenced by the different fertilization and tillage treatments. Moreover, seed yield in conventional was 5%–13% higher than that of minimum tillage, probably due to the lower weed density and biomass. Concerning fertilization treatments, total weed density and biomass increased under manure application and inorganic fertilization. Tillage effects on weeds were species specific. The density of perennial weeds such as purple nutsedge (Cyperus rotundus L.) and the density of small-seeded weeds such as redroot pigweed (Amaranthus retroflexus L.) and common purslane (Portulaca oleracea L.) were significantly lower under the conventional tillage than under the minimum tillage system.
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Link to article at publishers website
Database assignments for author(s): Dimitrios Bilalis, Hanwen Wu, Ilias S. Travlos, Demosthenis Chachalis

Research topic(s) for pests/diseases/weeds:
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Amaranthus retroflexus (weed)	Chenopodium (crop)
	Portulaca oleracea (weed)	Chenopodium (crop)
	Cyperus rotundus (weed)	Chenopodium (crop)