Abstract
The stimulation of seed germination by smoke and aqueous smoke extracts from the combustion of plant material has recently received a great deal of attention. This study was conducted to assess the effects of smoke on the weed species Echinochloa crus-galli (barnyard grass). Plant-derived smoke was produced from Bauhinia variegata using a newly designed furnace and then applied to the weed species. The results showed that plant-derived smoke solution significantly increased the germination rate (70–92.3%), germination percentage (31–47%), fresh weight (30–69%), shoot and root length (10–14.9%, 35–44%), germination index (50–100%) and vigour index (114–157%) of barnyard grass relative to the control. Treatment with plant-derived smoke solution also significantly reduced the endogenous abscisic acid of seeds, while α-amylase activity increased significantly compared to the control. Overall, these findings indicate that stimulation and quick emergence from a dormant soil seed bank of barnyard grass can be induced by plant-derived smoke solution followed by chemical control through known weedicide/herbicide treatments as an eco-friendly alternative method of weed control.
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Schedule a callMore From: Acta Agriculturae Scandinavica, Section B – Soil & Plant Science
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