Role of seaweed extract and NPK on the growth and yield of onion (Allium wakegi L. Varaggregatum)

¹ Tadulako University, Department of Horticulture, Faculty of Agriculture, Palu, Indonesia
² Tadulao University, Study Program of Agribusiness, Faculty of Agriculture, Palu, Indonesia

^* Corresponding author: ryusufus@untad.ac.id

Abstract

Onion is one of the primary commodities of growing in Central Sulawesi and is a raw material for the fried shallot processing industry cv. lembah palu. This study aimed to determine the effect of seaweed extract and NPK on the growth and yield of the onion. This research was performed at the Faculty of Agriculture farm, Tadulako University. This research was prepared using a Randomized Block Design (RBD) consisting of seven treatments, with the following details: (A1) = Caulerpa sp Extract 100 ml/pot; (A2) = Sargassum sp Extract 100 ml/pot; (A3) = Ulva sp. Extract 100 ml/pot; (A4) = 0.25 g NPK fertilizer per plant; (A5) = 100 ml of Caulerpa sp. Seaweed Extract and 0.25 g NPK per pot; (A6) = Sargassum Sp Extract 100 ml and 0.25 g NPK per pot; (A7) = Ulva sp. Extract 100 ml and 0.25 g NPK per pot. Thus, there are seven treatments. Each treatment is repeated three times so that there are 21 experimental units. The results showed that the treatment of seaweed extract and NPK obtained better number of leaves, plant height, fresh plant weight, fresh tuber weight, plant dry weight, and number of tuber clumps.