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Pertumbuhan dan Produksi Selada (Lactuca sativa L.) Akibat Pupuk Organik Cair dan konsentrasi GA3 yang Berbeda dalam Hidroponik Sistem Wick

*R. A. Nisa  -  Department of Agriculture Science, Universitas Diponegoro, Indonesia
S. Sutarno  -  Department of Agriculture Science, Universitas Diponegoro, Indonesia
F. Kusmiyati  -  Department of Agriculture Science, Universitas Diponegoro, Indonesia

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Abstract

The nutrient solution plays an important role in hydroponic, the addition of liquid organic fertilizer and GA3 is expected to support plant growth and production. The research was held on 20 July – 8 December 2022 in Selokaton, Sukorejo, Kendal Regency, as well as the Plant Ecology and Production Laboratory, Faculty of Animal and Agriculture Science, Diponegoro University. The experiment was arranged in a 3 x 4 Factorial Completely Randomized Design with 3 replications, 12 combinations, and 36 experimental units. The first factor was the type of liquid organic fertilizer (LOF), namely P0 = without fertilizer, P1 = LOF of tofu waste, P2 = LOF of Leucanea leucocephala leaves. The second factor was the concentration of GA3, namely G0 = 0 ppm, G1 = 25 ppm, G2 = 50 ppm, G3 = 75 ppm. The type of liquid organic fertilizer treatment has a significant effect on all parameters. Interactions between treatments significantly affected leaf area, and fresh weight of plant. The treatment of liquid organic fertilizer made from tofu waste and Leucanea leucocephala leaves, as well as a concentration of 50 ppm GA3 gave the best growth and production of the LE 873 variety of lettuce in the wick system.

Keywords: Hormone, Leucanea leucocephala, Tofu waste
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Funding: Universitas Diponegoro under contract MetMu123456

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