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Efficacy of three botanicals in cowpea field, Oyo state, Nigeria
Aims: To evaluate the effects of different concentrations of the plant extracts of Eucalyptus camaldulensis (EU), Eucalyptus torreliana (ET) and Leucaena leucocephala (LL) on seedgermination, seedling-growth, weed flora and yield performance of cowpea. Study Design: The study was laid out in a compl...
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2020
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| LEADER | 00000njm a2000000a 4500 | ||
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| 001 | oai:repository.ui.edu.ng:123456789/10701 | ||
| 042 | |a dc | ||
| 720 | |a Isienyi N.C. |e author | ||
| 720 | |a Fadina O.O. |e author | ||
| 720 | |a Fayinminnu O.O. |e author | ||
| 720 | |a Olubode O.S. |e author | ||
| 260 | |c 2020 | ||
| 520 | |a Aims: To evaluate the effects of different concentrations of the plant extracts of Eucalyptus camaldulensis (EU), Eucalyptus torreliana (ET) and Leucaena leucocephala (LL) on seedgermination, seedling-growth, weed flora and yield performance of cowpea. Study Design: The study was laid out in a completely randomized design (CRD) with eighteen ttreatments replicated three (3) times, totaling fifty-four (54) experimental samples. The whole experiments were repeated in two trials. Place and Duration of the Study: This study was carried out on the roof top garden of department of Crop Protection and Environmental Biology, University of Ibadan, Nigeria from 2015 to 2017. Methodology: Leaves of EU, ET and LL were harvested, air-dried, milled and assayed for phytochemicals (mg/g) following standard-procedures. Milled samples (144, 108, 72, 36 and 0 g) of each botanical were dissolved in 1 L distilled-water to obtain Aqueous-Leaf-Extracts (ALE) of 100, 75, 50, 25 and 0% (control) concentrations. Ten seeds of cowpea-Ife brown in petri dishes were treated with the different concentrations. Data were collected on Seed Germination-SG (%). In pots containing 10 kg soil, cowpea-seeds (2 plants/pot) were sown. Each botanical-extract at different concentrations and paraquat (5 mL/L/ha) were applied, before and five Weeks-After-Sowing (WAS). Data were collected on Plant height-PH (cm) at 3,5,7,9 and 11 WAS, while Grain Yield-GY (g/pot) was determined at maturity. Relative Importance Values (RIVs) were determined following standardprocedures. Data were analysed with descriptive-statistics and ANOVA at α0.05. Results: Total phenols (32.04±0.10), tannins (27.40±0.04) and saponins (20.15±0.03) were significantly higher in EU than in ET and LL. Cowpea SG ranged from 80.0±0.5 (50% LL) to 100.0±1.2 (100% LL). Cowpea PH ranged from 18.2±2.0 (100% ET) to 48.5±3.2 (100% EU) both at 9-WAS. Cowpea GY ranged from 0.1±0.1 (25% LL) to 4.2±0.5 (50% LL). Mitracarpus villosus had highest RIV of 52.3 (100% EU at 3-WAS) but reduced to 28.5 (100% EU at 9-WAS). Aqueous-leafextract of Eucalyptus camaldulensis at 100% reduced Mitracarpus villosus populations, while Leucaena leucocephala at 50% improved grain yields. | ||
| 024 | 8 | |a 2457-1024 | |
| 024 | 8 | |a https://repository.ui.edu.ng/handle/123456789/10701 | |
| 653 | |a Bio-herbicide | ||
| 653 | |a Eucalyptus torreliana | ||
| 653 | |a Eucalyptus camaldulensis | ||
| 653 | |a Leucaena leucocephala | ||
| 653 | |a Cowpea | ||
| 245 | 0 | 0 | |a Efficacy of three botanicals in cowpea field, Oyo state, Nigeria |