Growth and Yield Response of Red Onion (Allium ascalonicum L.) Grown in Different Potting

摘要

An experiment was conducted to evaluate the growth and yield response of red onion ( Allium ascalonicum L.) grown in different potting media. Potting materials were sandy soil, cattle manure, coir dust and paddy husk ash. The media such as medium 1 used as control (sandy soil: cattle manure at ratio (v/v) of 6:2), medium 2 (sandy soil: cattle manure: coir dust at ?? ratio of 6:2:1), medium 3 (sandy soil: cattle manure: paddy husk ash at ratio of 6:2:1) and medium 4 (sandy soil: cattle manure: coir dust : paddy husk ash at ratio of 12:4:1:1) were prepared two weeks before planting. Bulbs were planted in each pot and other agronomic practices were done as recommended by Department of Agriculture, Sri Lanka. Plant height and number of leaves per plant were recorded at two week intervals. At the time of harvesting, fresh and air dry weights of plant, number of bulbs per plant, bulb diameter, bulb length, weight of bulbs per plant and nutrient (P and K) contents were measured and data were analyzed. The results indicated that potting materials have significant (p Key words: Cattle manure, Coir dust, Nutrient contents, Onion, Paddy husk ash, Yield N. Suthamathy and Thayamini. H Seran. Growth and Yield Response of Red Onion ( Allium ascalonicum L.) Grown in Different Potting. J Phytol 3/1 (2011) 50-58