Allelopathic effect of aqueous extracts of Anagallis arvensis on Zea mays, Triticum aestivum and Pennisetum glaucum

Abstract

The study was designed to explore the allelopathic effect of Anagallis arvensis on Zea mays under laboratory condition during 2015-2016. The allelopathic influence of aqueous extracts of Anagallis arvensis on the germination, seedling growth, fresh weight and dry weight of Zea mays, Triticum aestivum and pennisetum glaucum have been determined. It was eminent that 20 g aqueous extracts of leaves and 72 h treatment present inhibitory effect on germination percentage, radical length, fresh weight and dry weight and the cause was found significantly higher than that recorded in the control treatment. The inhibitory effects were increased proportionally with increasing extract concentration and soaking duration. Treatment with 10, 20 and 30g extract has increased the germination with time. It is high in 48 h treatment while 20 g extract treatment has decreased the germination at 48h treatment. Overall 72 h treatment decreased the mean germination in all concentration. At very low concentration increased in time has less effect on germination. The result showed that at 24h the germination high with increase in concentration while at 48h the germination high with increase in concentration except 20g concentration and high duration the germination rate was low. The only exception was observed in the 10 g concentration of leaves that increased the plumule length. These findings indicate that Anagallis arvensis sown in fields which had leaf and stem litter of test plant will be adversely affected regarding germination, growth and ultimately resulting in lower yield.