بررسي توان دگر آسيبي زيست توده جو بر كنترل علف هاي هرز باريك برگ ماش در منطقه شهر ري

The evaluation of the Allelopatic effects of barley biomass on thin leaves weed suppressing in mung bean (Vigna radiate L.)

In order to evaluate the Allelopatic effects of barley biomass (derived from different phonological stages) on thin leaves weed suppressing in mung bean (Vigna radiate L.) production a field experiment was carried out in Shahr-e Rey the Islamic Azad University training-research field (2005-2006) using factorial experiment based on Randomized complete blocks design with four replications. Experimental treatments obtained from factorials of barley biomass rates (2, 4, 6, and 8 t/ha) and their age (biomass derived from tillering, stem elongation, heading, soft dough stages and straw after barley harvest). Barley biomass incorporated to the soil before seed bed preparation procedures for mung bean. Results showed that biomass age factor had significant effect on thin leaves weed control. Also all levels of barley biomass decreased weed fresh and dry weight. Mung bean seed yield significantly affected by biomass age. The highest amount of seed yield (87.10 g/m2) obtained under the use of heading biomass barley to mung 4 t/h effect. So regarding to environmental pollution of the south of Tehran which created by over the use of chemical fertilizers and pesticides, the application of barley biomass to decrease weed growth is highly recommended.