ABSTRACT
The insecticidal properties of
Ocimum gratissimum on Amaranthus spp was investigated in umudike between June
to August 2008. 0. gratissimum was intercropped with Amaranthus in 10
replicates, a control with Amaranthus only was also in place. The insects pests
encountered were of orders Heteroptera, Lepidoptera, Coleoptera and Orthoptera.
The insects included Nezara uiridula, Asp avia armigera (Heteroptera), Sylepta
derogata, Spodoptera littoralis (Lepidoptera), Zonocerus variegatus
(Orthoptera) and Epilachna spp (Coleoptera). N. viridula was most abundant. The
P. gratissimum controlled the population of N. Viridula. The population of N.
viridula recorded on Amaranthus intercropped with 0. gratissimum were 1.25 (±
1.14), 1.67 (± 1.29) and 1.67 (± 1.29) while for Amaranthus only, the values
recorded were 2.98 (± 1.65), 4.76 (± 2.18) and 7.74 (± 2.79). The influence of
0. _gratissimum on population of N. viridula and the larvae of the
Lepidopterans recorded significance (at P < 0.05) as Amaranthus grew on to
maturity. Its influence did not affect seed production as percentage seeds
produced from both replicates recorded 29.6 and 29.3 respectively. This implies
that 0. gratissimum has potentials for the control of the serious pest of
Amaranthus spp in our locality.
ANYAOHA, U (2021). Field Evaluation Of The Insecticidal Properties Of Ocimum Gratissimum On Amaranthus Pest. Mouau.afribary.org: Retrieved Dec 22, 2024, from https://repository.mouau.edu.ng/work/view/field-evaluation-of-the-insecticidal-properties-of-ocimum-gratissimum-on-amaranthus-pest-7-2
UGOCHI, ANYAOHA. "Field Evaluation Of The Insecticidal Properties Of Ocimum Gratissimum On Amaranthus Pest" Mouau.afribary.org. Mouau.afribary.org, 13 Jul. 2021, https://repository.mouau.edu.ng/work/view/field-evaluation-of-the-insecticidal-properties-of-ocimum-gratissimum-on-amaranthus-pest-7-2. Accessed 22 Dec. 2024.
UGOCHI, ANYAOHA. "Field Evaluation Of The Insecticidal Properties Of Ocimum Gratissimum On Amaranthus Pest". Mouau.afribary.org, Mouau.afribary.org, 13 Jul. 2021. Web. 22 Dec. 2024. < https://repository.mouau.edu.ng/work/view/field-evaluation-of-the-insecticidal-properties-of-ocimum-gratissimum-on-amaranthus-pest-7-2 >.
UGOCHI, ANYAOHA. "Field Evaluation Of The Insecticidal Properties Of Ocimum Gratissimum On Amaranthus Pest" Mouau.afribary.org (2021). Accessed 22 Dec. 2024. https://repository.mouau.edu.ng/work/view/field-evaluation-of-the-insecticidal-properties-of-ocimum-gratissimum-on-amaranthus-pest-7-2