The response of corn (Zea mays L.) cultivars to row spacing under weed interference condition


  • Gholamreza MOHAMMADI Dept. of Crop Production and Breeding, Faculty of Agriculture and Natural Resources, Razi University, Kermanshah, Iran. Postal code: 6715685438
  • Mehdi NOOKANI Dept. of Crop Production and Breeding, Faculty of Agricultural Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
  • Hamidreza MOHAMMADDOUST Dept. of Crop Production and Breeding, Faculty of Agricultural Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
  • Danial KAHRIZI Dept. of Crop Production and Breeding, Faculty of Agriculture and Natural Resources, Razi University, Kermanshah, Iran



corn, competition, 'KSC 704', 'Maxima', 'Simon', weed, yield, yield component


This study was carried out in order to study the response of corn cultivars to row spacing and weed interference at the Research Farm of Agricultural and Natural Resources Faculty, Razi University, Kermanshah, Iran in 2011. The experiment was a split block factorial based on a randomized complete block design with three replications. Factors consisted of three corn cultivars ('KSC 704', 'Simon' and 'Maxima') and three plant row spacings (45, 60 and 75 cm) under weeded and un-weeded conditions for all of the growing season. Results indicated that for all three corn cultivars, the highest weed dry mass occurred in the row spacing of 75 cm. Weed interference throughout the growing season reduced corn grain yield by 20 %. This condition also significantly decreased corn yield components except the 100-seed mass. Increasing plant row spacing increased weed density, while decreased corn yield by 16.5 %. Corn cultivars were significantly different in terms of the number of seed per ear and 100-seed mass, as 'KSC 704' and 'Simon' showed the highest values for these yield components, respectively. However, the number of ear per plant and grain yield were not significantly different between the corn cultivars under study.


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12. 12. 2018



Agronomy section

How to Cite

MOHAMMADI, G., NOOKANI, M., MOHAMMADDOUST, H., & KAHRIZI, D. (2018). The response of corn (Zea mays L.) cultivars to row spacing under weed interference condition. Acta Agriculturae Slovenica, 111(3), 525–533.

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