Pertumbuhan dan Hasil Kentang G1 Melalui Modifikasi Media Tanam dan Aplikasi Zat Pengatur Tumbuh

Abstract

Success in cultivating potatoes is the use of good quality potato seeds. Good quality potato seeds are produced through several stages starting from in vitro culture to extension seed production. One of the important stages in potato seed production is the production of first generation (G1) potato seeds. Efforts to increase the yield of G1 tubers can be made through modifying the planting media and applying growth regulators. This research aims to produce G1 potato tubers by adjusting the composition of the planting media and applying a growth inhibitor. The research consisted of two series of experiments. Each experiment was carried out using a Completely Randomized Design with six treatments, each repeated four times. Experiment 1: a. Cocopeat (CP) 100% + charcoal husk (CH) 0%; b. CP 20% + CH 80%; c. CP 40% + CH 60%; d. CP 60% + CH 40%; e. CP 80% + CH 20%; f. CP 0% + CH 100%. Experiment 2: a. Daminozide 0 ppm; b. Daminozide 500 ppm; c. Daminozide 1000 ppm; d. Daminozide 1500 ppm). From the research results it can be concluded: (1) Composition treatment CP 60% + CH 40% is the best treatment for the growth and number of G1 potato tubers; and (2) The best concentration of daminozide for the growth and production of G1 potato seed tubers is 3500 ppm.