ABSTRACT
This study tested the effect of the extract of Panicum maximum on lettuce, Peltophorum dubium (Spreng.) Taub and Parapiptadenia rigida (Benth.) Brenam. Extracts were prepared of 200 g of fresh aerial parts and 100 g of dry aerial parts for each liter of distilled water resulting in the gross extract (100%) diluted for the remainder concentrations 20, 40, 60 and 80%. The extract of Panicum maximum spoiled lettuce seed germination, however, the only effect on the native species studied was. Hence, the effect exerted on native species in this area cannot be allelopathyc incriminating other effects such as competition.
Keywords:
allelopathy; Peltophorum dubium (Spreng.) Taub; Parapiptadenia rigida (Benth.) Brenam.