Allelochemicals Effect of Aqueous Sweet Basil (Ocimum basilicum L.) on Weed Control in Peanut and Cowpea Crops

Four experiments were conducted during 2019 and 2020 summer seasons at Weed Research Central Laboratory, Giza Ismailia Stations, to exploit of the allelochemicals potential aqueous extract derived from aboveground parts Ocimum basilicum on controlling some annual weeds growth cowpea peanut crops. Aqueous applied 40% concentration as pre-emergence and/or apportionment 30%+10%, 20%+10%+10% 10%+10%+10%+10% starting with one week interval for estimation effective periods. The main findings showed that essential oils aerial 41 compounds which analyzed by GC-MS. major Eugenol, phenol, 2methoxy-3-(2-propenyl), 1,3,6,10-Cyclotetra decate traene, 14-Isopropyl-3,7,11-trimethyl(+), genranyl-a-terpinene, Retinol, acetate, 3-ethyl-3-hydroxy drostan, 2-(7-hepta decynyloxy) tetrahydro 2h-pyran M&P-Camphorene. These have allelopathic effect weeds. On other hand, was superior over treatments increasing characteristics yield plants. Furthermore, treatment pre- emergence same pendimethalin soil-herbicide 4.2 l/ha. results true in pot field experiments.