Optimization of Potato Cuttings of Granola Kembang Cultivars with the Application of Auxin and Paclobutrazol for Tuber Production

¹ Faculty of Agriculture and Animal Science, University of Muhammadiyah Malang, Jl. Raya Tlogomas No 246, Malang 65144, East Java, Indonesia
² Faculty of Agriculture, University of Brawijaya, Jl. Veteran, Malang 65145, East Java, Indonesia
³ Faculty of Science, The Hashemite University, 13115 Zarqa, Jordan

^* Corresponding author: syarifhusen.hasan@gmail.com

Abstract

Every year the need for potatoes continues to increase, both for the industry as processed potatoes and vegetable potatoes. One of the important things in potato cultivation is the use of potato seeds, quality seeds are the key to potato crop productivity. The purpose of this study was to determine the optimal concentration of different auxin and paclobutrazol on the growth of cuttings and the production of potato tubers (tubers for seeds). This study used a Randomized Block Design (RBD) with two treatment factors, namely the concentration of auxin (Rootone F) with three levels and the concentration of paclobutrazol (three levels), and repeated three times. The results showed that additional treatments were able to inhibit plant height at 42 DAP (Day After Planting). The concentration of 200 mg L^-1 auxin and 100 mg L^-1 Paclobutrazol were more effective on tuber production. The combination of 200 mg L^-1 auxin and 100 mg L^-1 Paclobutrazol treatment resulted in an average number of tubers 12 tubers per plant and tuber classification based on tuber weight obtained an average number of bulbs grade S 6.83, grade M 2.33, and grade L 0.5.