Response of Growth and Yield of Shallot (Allium ascalonicum L.) to Application of Biofertilizer and Fungicide

Abstract

Allium ascalonicum L. (shallot) cultivar Bima is one of the leading horticultural commodities in Brebes region, which has high economic value. Shallots have excellent development prospects in terms of various fields, but there is a decreasing rate in shallot yields and it caused by several factors, including low levels of soil fertility and high intensity of disease attacks. The application of biofertilizers and fungicides is expected to be one solution for increasing shallot yields. The purpose of this study was to analyze the growth response and yield of shallots as a result of the application of biofertilizers and fungicides. This research was conducted at Baros Village, Ketanggungan District, Brebes, Central Java. The experimental design used was a randomized complete block design with 16 treatments and 2 repetition. The treatment that given is a combination of biofertilizer concentration (0 ml/l, 4 ml/l, 8 ml/l, 12 ml/l) and fungicide concentration (0 g/l, 0.25 g/l, 0.50 g/l, 0.75 g/l). Observational data were analyzed using ANOVA and followed by Duncan's Multiple Range Test at 5% level. The application of 8 ml/l biofertilizer and 0.75 g/l fungicide showed significant results on the variables of disease attack intensity, plant height, number of leaves, plant growth rate, bulb diameter, fresh weight of bulbs and dry weight of bulbs, and resulted in a dry weight value of 5.03 kg / plot or equivalent to a productivity value of 11.66 tons / hectare.