Study of weed emergence pattern at potato (Solanum tuberosum L.) in Ardabil region

Subject Areas : Journal of Plant Ecophysiology

Afshar Azadbakht ¹ , Mohammadtaghi Alebrahim ² , Hamid Reza Mohammadduost Chamanabad ³ , Akbar Ghavidel ⁴ , حسین کربلایی خیاوی ⁵

1 - دانشجوی دکتری علوم علف های هرز دانشگاه محقق اردبیلی، اردبیل، ایران
2 - Academic staff
3 - دانشیار گروه زراعت، دانشکده کشاورزی دانشگاه محقق اردبیلی، اردبیل، ایران
4 - استادیار گروه خاکشناسی، دانشکده علوم خاک و مهندسی دانشگاه محقق اردبیلی، اردبیل، ایران
5 - بخش تحقیقات گیاهپزشکی، مرکز تحقیقات کشاورزی و منابع طبیعی استان اردبیل (مغان)، سازمان تحقیقات، آموزش و ترویج کشاورزی، اردبیل، ایران

Received: 2016-08-13 Accepted : 2016-12-08 Published : 2019-05-22

Keywords: Density, weed, Potato, Emergence pattern, Grow degree day,

Abstract :

The present experiment in order to determine the pattern of weed emergence in potatoes was conducted in 2014- 2015 at two places in agricultural research stations Alarogh and Samian in the city of Ardabil- Iran. Each week after potatoes planting emergence weeds in the constant sampling units inside the plots were transported to the laboratory in order to count and separation based on the results of this research, sampled weeds included 10 species and 7 families the highest germination and emergence of weeds occurred on average in 2-4 weeks after potatoes planting that's mean after receiving the 137 to 329 degree-days growth By potato in Samian station and 105 to 254 degree day in Alarogh station but the highest weed density in both stations Alarogh and Samian belonging to the species of Amaranth and after the amaranth in Samian station the highest density belong to the mustard compared to other weeds but also in this test, like amaranth, the lambs quarters in the third week belongs to the highest germination and density and declined from the third week onwards germination of this species. Green foxtail weed density in both studied stations had the highest rates in the third and fourth weeks equivalent to receiving the 233 to 329 degree day for Samian station and 177 to 254 degree day for Alarogh station but perennial weeds, field bindweed maintaining an emergence almost in the entire period...

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