keywords: Bulb yield, growth, onion, potting media
A trial was conducted in the screen house at the Department of Crop Science, Faculty of Agriculture, University of Benin, Benin City, Nigeria to investigate the effect of different potting media on the growth and yield of Allium cepa L. Five sources of growing media: burnt rice husk (BRH), oil palm refuse bunch (OPRB), cattle dung (CD), poultry manure (PM) and river sand (RS) were used. River Sand and the other four sources were combined in ratios of 1:1, 1:2 and 2:1 to make 12 treatment [RS + PM (1:1); RS +PM (1:2); RS +PM (2:1); RS + OPRB (1:1); RS + OPRB (1:2); RS + OPRB (2:1); RS + BRH (1:1); RS + BRH (1:2); RS + BRH (2:1) RS + CD (1:1); RS + CD (1:2); and RS + CD (2:1)]. Together with the five main media sources, made up a total of seventeen (17) treatments. These treatments were laid out in polybags in a completely randomized design with three replications. Data were collected on leaf length, number of leaves, number of bulbs, weight of fresh bulb, bulb girth and bulb yield. Results obtained indicated that potting media influenced growth and yield of onion significantly. The best yield was obtained from OPRB potting media with 30.00 g fresh bulb per plant, bulb girth (11.83 cm) and bulb yield (19.80 t ha-1). In the urban and sub-urban areas constrained with polluted and inadequate land space, potting medium with OPRB could be an innovative approach to good quality, enhanced and sustained onion production.
Cakmak I, Hengeler C &Marschner H 1994.Partitioning of shoot and dry matter and carbohydrates in bean plants suffering from phosphorus, potassium and magnesium deficiency.J. Experim. Botany, 4 (12): 45-50. Dewayne L, Richard I & Thomas HY 2003. Growth media for container grow ornamental plants. The environmental Horticulture Department, Florida Cooperative Extension Service. Fitz Patrick GE, Duke ER &Klock-Moore KA 1998. Use of compost products for ornamental crop production: Research and growers experiences: Hortscience 33: 941- 944. Gambo BA, Magaji MD, Yakubu AL &Dikko AU 2008. Effect of farmyard manure, nitrogen and weed interference on growth and yield of onion (Allium cepa L) at Sokoto river valley. J. Sustainable Devt. inAgric&Envt., 3(2): 87-92. Hussain UA, Rahaman AA, Aliyu L, Ahmed A &AmansEB 2000. Yield, bulb size distribution and storability of onion (Allium cepa L.) under different levels of nitrogen fertilization and soil moisture regime.Nig. J. Horticul. Sci., 5: 45-50. Khan MM, Khan AM, Abbas M, Muhammed J, Jaskani M, Ali A &Haider 2006. Evaluation of potting media for the production of Rough lemon nursery stock.Pak J. Botany, 38(3): 623-629. Mylavarapus, R. S and Kennelley, D. E. (2002).UF//IFAS extension soil testing laboratory(ESTL): Analytical procedures and training manual. Institute of Food and Agricultural Science, University of Florida, Gainsville, USA 55 pp. NIHORT 1986. National Horticultural Research Institute, Jericho, Ibadan. Annual Report. NwokwuGN&Ekwu LG 2015. Influence of planting techniques and potting media on the growth and yield of onion (Allium cepa L.). Int. J. Agric Sci. Res., 4(7): 140-145. Osaigbovo AU & Law-OgbomoKE 2012.Effect of seed size, potting media and watering frequencies on the growth of Daliumguineense (Black Velvet Tamarind) seedlings.Adamawa State University J. Agric Sci., 2(2): 117- 123. Singh PP&Verma AB 2001.Response of Onion (Allium cepaL.) to potassium application.JournalAgronomy, 46(1): 182-185.