Growth Response and Yield Performance of Green and Bulb-type Multiplier Onion (Allium cepa gr. aggregatum) Applied with Foliar Organic Concoctions

Abstract

This study aimed to evaluate the effects of different foliar organic concoctions on the growth and yield of multiplier onions (Allium cepa var. aggregatum). The treatments included a Farmers’ practice (Control) and four foliar organic concoctions: Oriental Herbal Nutrient, Fermented Plant Juice, Fermented Fruit Juice and Kuhol Amino Acid. Key parameters measured were plant height, number of leaves, leaf length, bulb diameter, neck diameter, and yield, both in terms of average and total weight. The results demonstrated that Fermented Fruit Juice consistently produced the greatest plant height, number of leaves, and leaf length in green type onions, indicating robust vegetative growth. Similarly, Fermented Plant Juice and Fermented Fruit Juice showed superior performance in bulb onions. Fermented Fruit Juice also resulted in the highest bulb number and diameter, contributing to the greatest average and total weight of both green and bulb onions. The control group provided a useful baseline but was generally outperformed by the organic treatments across most parameters. Fermented Fruit Juice emerged as the most effective treatment, followed closely by Oriental Herbal Nutrient and Fermented Plant Juice. Kuhol Amino Acids showed potential but delivered mixed results, suggesting the need for further optimization. Overall, the study highlights the significant benefits of using organic nutrient solutions in multiplier onion cultivation, offering sustainable and productive alternatives to conventional practices.

Keywords: Bulb-type multiplier onion, Fermented Fruit Juice, Fermented Plant Juice, Green-type multiplier onion, Kuhol Amino Acid, Oriental Herb Nutrient