Novianti, Sindi (2023) Ekstrak Bawang Merah Terhadap Pertumbuhan dan Produksi Tanaman Rosella (Hibiscus Sabdariffa L.). Other thesis, Universitas Islam Riau.

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Abstract

The aim of the study was to determine the interaction effect and main effect of Hydrilla verticillata and the concentration of ZPT Shallot Extract soaking on the growth and production of rosella plants. The research was carried out at the Experimental Garden of the Faculty of Agriculture, Riau Islamic University. The research was carried out for 6 months starting from July to December 2021. The design used in this study was a factorial Completely Randomized Design consisting of 2 factors. The first factor was Hydrilla verticillata consisting of 4 levels namely 0, 62.5, 125, 187.5 g/polybag and the second factor was shallot extract zpt consisting of 4 levels namely 0, 200, 500 and 750 ml/l water. Each treatment consisted of 3 replications and 48 experimental units were obtained. In the experimental unit there were 8 plants and 4 plants used as observation samples which were taken randomly to obtain 384 plants. The results of the study showed that the combination of giving hydrilla verticillata and the concentration of ZPT soaking in shallot extract had a significant effect on all parameters. The best treatment was the dose of hydrilla verticillata 187.5 g/polybag and the concentration of zpt onion extract 750 ml/l of water. The main effect of Hydrilla verticillata is significant on all observation parameters. The best treatment was the dose of 187.5 g/polybag hydrilla verticillata. The main effect of zpt immersion concentration of shallot extract was significant on all observation parameters. The best treatment was the zpt concentration of shallot extract 750 ml/l water.

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