Document Type : Research Paper

Authors

1 M. Sc. Student, Department of Agricultural Sciences and Food Industries, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Assistant Professor, Department of Agricultural Sciences and Food Industries, Science and Research Branch, Islamic Azad University, Tehran, Iran

3 Assistant Professor , Department of Agricultural Sciences and Food Industries, Science and Research Branch, Islamic Azad University, Tehran, Iran

4 Agricultural Research, Education and Extension Organization, Sanandaj, Kurdistan

Abstract

The present study aimed to increase competition ability of some dryland chickpea cultivars against weeds under different plant densities. Therefore, an experiment was conducted as a split factorial in a Randomized Complete Block Design with four replications in the research farms of the Kurdistan Agricultural and Natural Resources Research and Education Center, Garizeh Agricultural Research Station, Sanandaj, Iran, during the 2020-2021 growing seasons. Experimental treatments included different plant density (30, 36, and 42 plants.m-2) as main plot, seven cultivars (Azad, Jam, Hashem, ILC482, Pirooz, Kaka, and a local variety) and weed management (no weeding and hand weeding during the whole growing season) as subplots. Results indicated that weeding operations were effective in increasing yield and yield components of chickpea cultivars. Also, it was observed that there were significant differences among yield and yield components of the studied cultivars. ILC482 and Kaka cultivars had the highest and lowest number of main branches at 3.82 and 2.58 values, respectively.The highest number of secondary branches obtained at a density of 30 plants.m-2. Furthermore, the highest number of pods per plant registered for Pirooz and Jam cultivars and the lowest number of pods per plant was 7.98 in Hashem cultivar. The highest grain yield, indices of tolerance and competition and the lowest weed density observed for the Jam cultivar. The number of seeds per square meter, grain yield and ability withstand competition index improved with increasing plant density so that the highest values were achieved at the plant density of 42 plants.m-2.

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