The effect of temperature, salinity and soil burial on canary grass (Phalaris minor) germination

Abdol reza Ahmadi

Abstract


Canary grass (Phalaris minor) is a winter annual weed grown in many crops around the world. P. minor is a prolific and competitive weed especially in wheat crops. Knowledge is needed on weed species germination under natural conditions to make weed management decisions. Thus, the present study was conducted to evaluate the effect of temperature (5/15, 10/20, 15/25, 15/30 and 20/35 ° C night/day), salinity (0, 10, 20, 40, 80, 160 and 320 mM NaCl) and soil burial (0, 1, 2, 3 and 4 cm) on canary grass germination. The results indicated significant effect of different temperatures on the germination percentage, rate and time to reach 50% of maximum germination percentage in P. minor. The highest (95.5%) and lowest (0%) germination percentage occurred under15/25 and 20/35 (day/night), respectively. A decrease pattern was observed in the germination of P. minor as salinity increased. The percentage germination of P. minor at a depth of 0 and 0.5 cm was found to be 94.5 and 92.5, respectively. Overall, P. minor emergence decreased with increasing planting depth. PH treatments had significant effect on germination of canary grass. The maximum (96%) and minimum (30%) germination percentage of canary grass was observed at pH 7 and pH 5, respectively.

Keywords


Acidity, germination temperature, planting depth, Phalaris minor, salinity.

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