Okoh et al Greener Journal of Agricultural Sciences Vol. 11(3), pp. 114-122, 2021 ISSN: 2276-7770 Copyright ©2021, the copyright of this article is retained by the author(s) https://gjournals.org/GJAS Effects of Leaf Harvesting Frequencies on Yield and Quality of African Eggplant (Solanum macrocapon) Seeds Okoh, John Ochoche; Iyorkaa, Nater; Etta, Blessing Ojong Joseph Sarwuan Tarka University, PMB 2373 Makurdi – Nigeria. ARTICLE INFO ABSTRACT Article No.: 071521067 Type: Research The experiment was conducted to investigate the effect of leaf harvesting on yield and quality of African eggplant (Solanum macrocapon) seeds. The study was conducted during the 2019 cropping season both at the Teaching and Research Farm and Seed Science laboratory of Federal University of Agriculture, Makurdi. A single factor experiment was laid out in a Randomized Complete Block Design (RCBD) on the field, while the laboratory experiment was laid out in Completely Randomized Design (CRD) in three replications. Germination test was conducted using sand method in plastic containers. One hundred seeds were sown in each container to represent a replicate and covered with fine sand. The treatments are: No leaf harvest throughout the life cycle of the crop; Leaf harvest, once at 4 weeks after transplanting; Leaf harvest at 4 and 6 weeks after transplanting and Leaf harvest at 4, 6 and 8 weeks after transplanting. Data were collected on the following parameters; Fruit diameter, Number of fruit per plant, Number of seeds per fruit and 1000-seed weight. The data collected was subjected to analysis of variance (ANOVA). Treatment means were separated using Fisher Least Significant Difference (FLSD). The result showed that leaf harvesting frequency significantly reduced number of fruits per plant, 1000-seed weight and germination rate. However, it does not affect fruit size, number of seeds per fruit and germination percentage. It is therefore concluded that African eggplant could be harvested as vegetable leaves up to 8 weeks after transplanting without reducing yield and quality of the seeds. Accepted: 15/07/2021 Published: 31/07/2021 *Corresponding Author Okoh, John Ochoche E-mail: johnokoh69@ gmail. com Phone: 08074239171 Keywords: Leaf Harvesting; crop yield; crop quality; African Eggplant; Solanum macrocapon; seeds. Return to Content View [Full Article – PDF] [Full Article – HTML] [Full Article – EPUB] Post-Publication Peer-review Rundown View/get involved, click [Peer-review] REFERENCES 1. Ahmed, H. G., Saidu, Y. I., Aliyu, U., and Bello, M.T. ( 2015) Effects of Defoliation Stages and Defoliation Intensity on Growth and Yield of Garlic (Allium sativum L.) in Sokoto, Nigeria. Journal of Agriculture and Veterinary Science 8 (12) PP 96-99. 2. Akande, S. R., Olakojo, S. A., Ajayi, S. A., Owolade, O. F., Adetumbi, J. A., , O. N., Ogunbodede, B. A. (2012). Planting date effects on cowpea seed yield and quality at Southern Guinea Savannah of Nigeria. Seed Technology 34:979-988. https://stjournal.org/volume-34-no-1-2012/. 3. Al-Mudaris MA (1998). Notes on various parameters recording the speed of seed germination. Journal of Agriculture in the Tropics and Subtropics 99 (2):147-154 https://www.jarts.info/index.php/tropenlandwirt/article/view/1495 4. Animashaun, T. T., Oluwaghemi, O., Okewale M. O.and Opabode, J. T. (2019). Response of African eggplant (Solanum macrocarpon L.) to foliar application of 6-benzylaminopurine and gibberellic acid. Asian Journal of Biological Science, 12: 911-916. 5. Bahry, A. S., Yahya M. Al-wahaibi, Adbulkadir Elshafie and Ali Al-Bemani (2013) biosurfactant production by bacillus subtills B20 using Date molasses and its application in enhance oil recovery. Doi:10.1016/j.ibiod.2012.01.006. 6. Bahry, C. A., Venske, E., Nardino, M., Zimmer, P. D., Souza, V. Q. S. and Caron, B.O. (2013). Agronomic performance of soybean as a function of defoliation in vegetative stages. Tech. Science Agropec. 7(4):19-24. 7. Bonsu, K. O., Fontem, D. A., Nkansah, G. O., Iroume, R. N., Owusu, E. O., Schippers, R. R. (2002). Diversity within the Gboma eggplant (Solanum macrocarpon), an indigenous vegetable from West Africa. Ghana Journal of Horticulture, 1:50–58. 8. Eletta, O. A. A; Orimolade, B. O; OluwaniyI, O. O; DOSUMU, O. O. (2017). Evaluation of Proximate and Antioxidant Activities of Ethiopian Eggplant (Solanum aethiopicum L) and Gboma Eggplant (Solanum macrocarpon L). Journal of Applied Science, Environment and Management. Vol. 21 (5) 967-972 9. Fontoura, T. B, Costa, J. A. and Daros, E. (2006). Effect of levels and epochs and defoliation on yield and yield components of soybean grains. Science. 7:49-54. 10. Ghobary, H. M. M. 2010. Study of relationship between yield and some yield components in garden pea (Pisum sativum L.) by using correlation and path analysis. J. Agric. Res. 36, 351–360. 11. Grubben, GJH; Denton, OA (2004). Plant Resources of Tropical Africa II: Vegetables (Leiden, Wageningen: Backhuys Publishers) 35-198. 12. Heidari (2013). Effect of irrigation with contaminated water by cloth detergent on seed germination trait and early growth of sunflower (Helianthus Annuus L.) Notulae Scientia biologicae 5(1) Doi:10.15835/nsb.5.1.9003 13. Heidari, H., 2012. Effect of defoliation intensity on maize yield, yield components and seed germination. Life Science Journal, 9 (4): 1587-1590. 14. Heidari, H., 2013. Yield, yield components and seed germination of maize (Zea mays L.) at different defoliation and tassel removal treatments. Philippine Agricultural Scientists, 96 (1): 42-47. 15. Heidari, H., 2015. Effect of defoliation based on leaf position on maize yield, yield components and produced seed germination. Bulg. J. Agric. Sci., 21 801–80. 16. Heidari, H., S. Bahraminejad, G. Maleki and A. H. Papzan, 2009. Response of cumin (Cuminum cyminum L.) to sowing date and plant density. Research Journal of Agriculture and Biological Sciences, 5 (4): 597-602. 17. Ibrahim, U., Auwal, B.M., Udom, G. N. (2010). Effect of Stage and Intensity of Defoliation on the Performance of Vegetable Cowpea (Vigna unguiculata (L.) Walp). African J. Agric. Res. 5(18): 2446-2451. 18. Idowu, M. K., Oyedele, D. J., Adekunle, O. K.; Akinremi, O. O. and Eilers, B. (2014). Effects of Planting Methods and Seed Density on Vegetable Yield and Nutrient Composition of Solanum macrocarpon and Solanum scabrum in Southwest Nigeria. Food and Nutrition Sciences. 5, 1185-1195 http://www.scirp.org/journal/fns http://dx.doi.org/10.4236/fns.2014.513129. 19. ISTA (2020). International Rules for Seed Testing. The Germination tests. Volume 2020(1):1-14 https://doi.org/10.15258/istarules.2020.05. 20. Koptur, S., Smith, C.L.,and. Lawton, J. H. (1996) Effects of artificial defoliation on reproductive allocation in the common vetch Vicia sativa (fabaceae; papilionoideae). American Journal of Botany, 83 (7): 886-889. 21. Lawlor, D. W. (2001) Annals of botany photosynthesis. 3rd ed. 386 PP. Oxford: Bio 22.99 (soft back). Issue 6, June 2001 pages 852-853. https://doi.org/10.1000/anbo.2001.1418. 22. Moura, A., Nielsen, C. A. S., Bilstrup, J., & Jose, V. M. M. (2014). Recent diversification of a marine genus (tursiop Spp) tracks habitat preference and environmental change systematic biology. 62(6) Doi:10.1093/sysbio/syt051. 23. Ojo, O.D., Olufolaji, A.O. (1997). Optimum NPK fertilizer rates for growth and yield of Solanum macrocarpon. Journal of Vegetable Crop Production, 3(1), 73-77. 24. Pal, A. K. and Singh, S. (2012). Correlation and path analysis in garden pea (Pisum sativum L. var. hortense). The Asian Journal of Horticulture. 7(2): 569-573. 25. Quitela (2009) Genetic analysis redraws the management boundaries for the European sprout. 3 March, 2020. https//doi.org/10.1111/eva12942. Cite this Article: Okoh, JO; Iyorkaa, N; Etta, BO (2021). Effects of Leaf Harvesting Frequencies on Yield and Quality of African Eggplant (Solanum macrocapon) Seeds. Greener Journal of Agricultural Sciences 11(3): 114-122.
