Online: ISSN 2784 – 0360 | ISSN – L 2784 – 0360 | Print: ISSN 2784 – 0379 ISSN-L 2784 – 0360

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Izuogu N.B.

Evaluation of the nematicidal and antifungal activity of aqueous extracts of Moringa Oleifera leaves and seed in cucumber field

Oct 3, 2019 |

M.C. Olajide, N.B. Izuogu, R.A. Apalowo, H.S. Baba

ABSTRACT. This aim of the two-year study was to evaluate the nematicidal and antifungal activity of Moringa oleifera extracts against Meloidogyne incognita and fungi infestation in cucumber field. The aqueous extracts of leaves and seeds of M. oleifera were used to treat the plants. The findings of the present study revealed that the plant extracts were active against the test pathogens. All treated plants were significantly higher than the control with respect to number of leaves and branches, vine length, fruit weight, and yield. Of the two varieties of cucumber used, combination of cucumber market with moringa aqueous leaf extracts gave higher results. The phyto-chemical screening revealed the presence of alkaloids, flavonoids, glycosides, saponins, and tannins. These possess nematicidal and antifungal activities. Combination of variety 2, Market More with Moringa leaves aqueous extract is being recommended to farmers for management of nematode and fungal diseases. Organic amendments have the advantage of controlling environmental effluence.

Keywords: Meloidogyne incognita; anti-fungi; phytochemicals; Cucumis sativus.

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Performance of sesame (Sesamum Indicum L.) as influenced by 2,4 – dichlorophenoxyacetic acid and NPK fertilizer

Oct 3, 2019 |

E.K. Eifediyi, F.O. Ogedegbe, N.B. Izuogu, C.A. Adedokun, A. Katibi, S.U. Remison

ABSTRACT. The Guinea savannah zone of Nigeria is beset by increasing population and infrastructural develop-ment, thereby putting pressure on available land with rapidly declining fertility due to low organic matter content, soil erosion, high temperature and seaso-nal bush burning. Sesame is cultivated in this zone and the yield has remained very low, compared to yield in other parts of the world. This could be attributed to poor nutrient status and poor cultural practices used by peasant farmers. A field experi-ment was conducted at the Teaching and Research Farm, University of Ilorin, Nigeria, in a southern Guinea savannah zone in 2015 and repeated in 2016 crop-ping season to determine the effects of 2,4-Dichlorophenoxyacetic acid (2,4-D), a plant growth regulator and NPK fertilizer on the growth and yield of sesame. The experiment was laid out as a factorial arrangement, fitted into a randomized complete block design replicated thrice. The factors imposed were 2,4-D (0, 5 and 10 ppm ha-1) and NPK 15:15:15 (0, 100, 200 and 300 kg ha-1). Data were collected on vegetative traits (plant height, number of leaves, leaf area) and yield components (number of capsules per plant; yield per plant and per hectare). The data were subjected to analysis of variance (ANOVA) using the Genstat statistical package 17th edition and significant means were separated by using the least significant difference at 5% level of probability. The result revealed that using plant growth regulator and NPK fertilizer had significant effects (p<0.05) on plant height (151 cm) and yield per hectare (530 kg/ha). The qualitative and quanti-tative analysis of the seeds further reaffirmed the presence of bioactive compounds, such as saponins, tannins, flavonoids and phenolic compounds, which are important health promoting food in the seeds. Keywords: plant growth regulator (PGR); NPK fertilizer; growth; yield; sesame.

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© by the authors; licensee Journal of Applied Life Sciences and Environment, Iasi, Romania. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)