Growth analysis some weed species

ABSTRACT: Wild oat, wild mustard, littleseed canarygrass, hood canary grass and ryegrass are the most important weeds affecting agronomic systems in the Qaemshahr area. Effective species control largely depends on the specific growth parameters of those species. The main goal of this research was to compare growth parameters of the five weed species above mentioned. Seeds were collected in spring, 2010 from fields of the Agriculture College, in Islamic Azad University, Qaemshahr branch. Seeds were then planted in pots, diameter 20 cm and height 28 cm and kept in the university’s greenhouse. Measurements were taken for growth analysis about nine times during a 10-day period. Results demonstrated that wild oat had more height than other weeds. Wild oat and ryegrass had the highest and lowest records for leaf area and dry matter for each plant, respectively. Calculations of specific leaf area ratio, leaf weight ratio and leaf area ratio demonstrated that wild oat had the highest, in the first place, wild mustard was in the second place and there was no meaningful difference between the two phalaris species, and ryegrass had the lowest. This procedure demonstrated plants’ capabilities to compete.