Study of Time and Location Management of Weed Control on Yield and Some Agronomical Traits of Chickpea (Cicer arietinum L.)

In order to evaluate the effect of Time and Location Management of weed control on yield and some agronomical traits of chickpea (Cicer arietinum L.), an experiment was done as a factorial based on randomized complete block design with three blocks in Research Field of Department of Agronomy, Karaj Branch, Islamic Azad University in March 2011. Experiment has two factors that the first factor was different time of weeds control in seven levels (control at 0, 10, 20, 30, 40, 50 and 60 day after chickpea emergence) and second factor was different locations of weed control in three levels (in burrow, in furrow and in burrow and burrow together). Results indicated that effect of weed control time had significant effect (P>0/01) on grain yield, biological yield, harvest index, plant height and 1000 grain weight. Also effect of weed control location had significant effect on grain yield and plant height (P>0/01), and significant effect on biological yield (P>0/05), but had no significant effect on harvest index and 1000 grain weight. Interaction effect of weed control time and weed control location had significant effect (P>0/05) on grain yield, plant height and 1000 grain weight but did not the same effect on biological yield and harvest index. Highest level of grain yield obtained at treatment which controlled in burrow and furrow together at 30 day after chickpea emergence, with average of 946.34 kg/ha and lowest level of grain yield obtained at treatment which controlled in burrow and furrow together at 60 day after chickpea emergence, with average of 393.14 kg/ha. It is needed to attention that on base of this study’s results we can be able to saying; it seems that the best weed control time in chickpea is 30 days after chickpea emergence. Also totally it can be said that there is no difference between the control on furrow and in burrow, but control of burrow and furrow together will be capable to affect yield and most agronomical traits of chickpea plant.