Investigating the competitive ability of different potato varieties with weeds in autumn cultivation
Subject Areas : Weed Research JournalAli Akbar Nouzaei 1 , Saeed Sadeghzadeh Hemayati 2 , Ali Saremirad 3
1 - MSc. Agronomy
2 - Sugar Beet Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
3 - Sugar Beet Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
Keywords: Yield, Early, Sustainable, Tolerance,
Abstract :
The present study was carried out to investigate the competitive ability of different potato cultivars against weeds during the crop year 2016-2017. The experiment was conducted using split plots in a randomized complete block design with three replications. The experimental treatments included five levels of weed control methods and three levels of potato cultivars. The results showed that the presence of weeds caused a decrease in all measured parameters in potatoes, including plant height, the number of main branches, the number and weight of potato tubers with diameters less than 28 mm, 28-35 mm, 35-45 mm, and 45-55 mm, as well as the fresh and dry weight of tubers and yield. This reduction was more significant in the treatment with no weed control (control). Significant differences were observed among the cultivars in terms of the number and weight of tubers and yield. The study determined that there were differences among the cultivars in their ability to compete with weeds. Specifically, the semi-late cultivar Diamant, with a competitive ability of 72.22%, was identified as a strong competitor against weeds. However, the Sante and Arinda semi-early cultivars exhibited a weaker competitive ability (62.50% and 64.70%, respectively) compared to the Diamant cultivar. Based on the study's findings, it is recommended that the Diamant cultivar, due to its higher competitiveness, be used in programs designed to reduce pesticide consumption and promote sustainable agriculture.
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