Comparative Efficacy of Aqueous Extract of three Botanicals on Corn Earworm (Heliothis armigera)

Ime Udo, Paulinus Titus Ibanga


A field research was conducted at Ikpe Annang, Essien Udim Local Government Area of Akwa Ibom State, Nigeria between March and June, 2015 to evaluate the efficacy of aqueous extract of Azadirachta indica, Moringa oleifera and Ocimum grattissimum on corn earworm (Heliothis armigera). The experiment was laid out in split plot fitted into randomized complete block design with three replicates. Aqueous extracts of the three botanicals were applied at the rates of 0, 100, 200 and 300 l/ha weekly to study the number of punch holes on leaves and the number of cobs attacked by corn earworm at 4, 6 and 8 weeks after planting (WAP), as well as grain yield. Data collected were subjected to analysis of variance (ANOVA) and significant means compared using least significant difference (LSD) at 5% probability (p<0.05). The results from the study showed that application of A. indica and M. oleifera leaf extracts applied at 300 l/ha recorded fewer punch holes than O. grattissimum leaf extract, at different times after planting. At harvest, the application of neem leaf at 300l/ha recorded lesser number (1.49) of insect pest per cob than scent leaf (2.51) and moringa leaf (1.80) while fewer number of cobs were attacked by the insect pest. At harvest, the highest grain yield of 2.31 t/ha was recorded from maize treated with moringa leaf extract while neem leaf recorded 2.25 t/ha, as against scent leaf with the lowest yield of 1.85t/ha. The incorporation of biopesticides particularly neem and moringa for the management of field pests of maize is hereby advocated.


Neem, moringa, scentleaf, efficacy, aqueous extract, corn earworm, maize

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Effa, E. B., Uwah, D. F., Iwo, G. A., Obok, E. E. and Ukoha, G. O. (2012). Yield Performance of Popcorn

(Zea mays L. everta) under Lime and Nitrogen Fertilization on an Acid Soil. Journal of Agricultural

Science, 4 (10): 12- 19.

Farid, A., Khan, M. I. N.,Khan, A., Khattak, S. U. K., Sattar, A. and Sattar, A. (2007). Studies on Maize Stem

Borer, Chilo partellus in Peshawar Valley. Pak. Journal of Zoology, 39 (2): 127-131.

Tena, W. and Beyene, S. (2011). Identification of Growth Limiting Nutrients in Alfisols: Soil Physico-

chemical properties, Nutrient Concentrations and Biomass Yield of Maize. Journal of Sustainable

Tropical Agricultural Research, 24(1): 23-35.

Anon, M. (2012). Maize Supply to Local Industries in Nigeria: the Feasibility Report. Available at in- nigeira/item/146-supplying-maize-to-local industries- in-Nigeria-how-viable. Accessed on 10/10/2015.

Badmus, M. A. and Ariyo, O. S. (2011).Forecasting Cultivated Areas and Production of Maize in Nigeria

using ARIMA Model.Asian. Journal of Agricultural Science, 3 (3): 171-176.

Kamanula J., Sileshi G. W., Belmain S. R., Sola P., Mvumi B. M. and Nyirenda G. K. (2010). Farmers’ Insect

Pests Management Practices and Pesticidal Plant use in the Protection of Stored Maize and Beans in

Southern Africa. International Journal of Pest Management, 57(1): 41-49.

Grzywacz, D.and Leavett, R.(2012). Biopesticides and their Role in Modern Pest Management in West Africa.

African Journal of Agricultural Science, 117: 313-318.

Hellpap, C. (2000). Steps for Developing Botanical Pesticides.Gate Information Service.Available on on 8/12/ 2015.

Udo, I.O. (2005). Evaluation of the Potential of some Local Spices as Stored Grain Protectants against Maize

Weevil Sitophilus zeamais Mots (Coleoptera: Curculionidae). Journal of Applied Science and

Environmental Management, 9 (1): 165–168.

Kasolo, J. N., Bimenya, G. S., Ojok, L., Ochieng, J. and Ogwal-Okeng, J. W.(2010). Phytochemicals and

uses of Moringa oleifera Leaves in Ugandan Rural Communities. Journal of Medicinal Plant

Research, 4(9): 753-757.

UCCDA (1998). Uyo Capital City Development Agency. Meteorological report and weather forecast. Uyo:


Udo, E. J. (1997). Clayed mineralogy of five surface soils under different drainage condition. Nigeria Journal

of Science, 11: 315 – 317.

Loganathan, P. and Sutton, P. M. (1986). Phosphorus fraction and availability in solid form in different

geological deposit in the Niger Delta of Nigeria. Journal of Soil Science, 143:16 – 25

Udo, I.O. (2011). Potentials of Zanthoxylum xanthoxyloides (LAM.) for the Control of Stored Product Insect

Pests. Journal of Stored Products and Postharvest Research 2(3): 40-44.

Isman, M. B. (2006). Botanical Insecticides, Detergents, and Repellants in Modern Agriculture and an

Increasingly Regulated World. Annu. Revised Entomology, 51:45-66.

Elahi, K. M (2008).Social Forestry, Exotic Trees and Moringa. The Daily Star Published 6 sept.

Available at URL: Accessed on 2/3/2016.

Okweche, S. I. and Umoetok, S. B. A. (2012).The Distribution of Maize Stem Borers in Cross River State, Nigeria. International Journal of Animal and Environmental Science. 2(1): 82-86.

Khan, S. M. and Amjad, M. (2000). Chemical Control of Maize Stem Borer (Chilo partellus Swin.). Journal

of Biological Science, 3(12): 2116-2118.



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