Maize	is a major staple food	crop widely grown in Nigeria	but its production is constrained by weed-interference. Bio-herbicides are effective and eco-friendly in managing-weeds in some crops, its efficacy on maize have not been adequately documented. Therefore, herbicidal potential of Botanicals (Eucalyptus torreliana-Et, Eucalyptus camaldulensis-Ec and Leuceana leucocephala-Ll) extract in maize field were investigated. The experiment was laid out in CRD (r=3). Phytochemicals	(mg/g)	of the botanicals were	determined using standard procedures. Phytotoxicity of Botanicals at	100%, 75%, 50%, 25% were	assessed on maize (DTMA- Y -STR) seed-germination using distilled-water as control in the Laboratory. Data on Percentage-Seed Germination-PSG (%)	 and Plumule-Length-PL (cm) were assessed. In field, treatments: 100%, 75%, 50%, 25%, 0% of Botanicals and paraquat (5mL/L) were applied before-sowing and five weeks-after-sowing (WAS). Plant-height-PH (cm) and Grain-yield-GY (g/pot) were assessed at intervals of two-weeks starting from 3-WAS. Relative-Important-Values RIV were determined using standard-procedure. Data were	analyzed using descriptive-statistics and ANOVAα 0.05.
The Phytochemical contents in Ec were higher in Total-phenols (32.0), tannins (27.4) and saponins (20.2).	The PSG of maize in Ll was higher, ranged from 100.0±0.6	in 25% to 100.0±1.2 in 75%. The PL	was higher in Ll, ranged from	 3.4±0.3 to 11.3±0.6 at 11-WAS. PH and GY both	in Ec was significantly higher, ranged from 126.7±14.8 to	140.5±12.3, while GY ranged	 from 42.0±5.2 to 94.31±12.0. Mariscus-alternifolius had highest RIV of 48.7 at 3-WAS in Ec-25% and reduced to 18.9 in Ec-25% at 9-WAS.  Eucalyptus camaldulensis extract reduced weeds in maize-field, and enhanced grain-yield.

06 - ASSESSMENT OF HERBICIDAL POTENTIALS OF THREE BOTANICALS LEAVE EXTRACT ON WEED ASSOCIATED WITH MAIZE FIELD IN OYO STATE, NIGERIA