Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Vol. 15 No. 3 (2026): June 2026

Effect of Shade Intensity and Soil Types on the Vegetative Growth and Chlorophyll Content of Javanese Pepper (Piper retrofractum Vahl.) Seedlings

Reo Sambodo (Universitas Mercu Buana Yogyakarta)
Angki Intan (Universitas Gunung Kidul)
Wafit Dinarto (Universitas Mercu Buana Yogyakarta)
Dian Astriani (Universitas Mercu Buana Yogyakarta)



Article Info

Publish Date
30 Jun 2026

Abstract

Javanese pepper is an indigenous Indonesian spice with high economic value and widely utilized as a traditional medicinal plant. Efforts to increase Javanese pepper production require cultivation optimization, particularly during the nursery stage, which is a key factor in the success of on-farm cultivation. This study aimed to determine the optimal nursery conditions for Javanese pepper in terms of shading intensity and soil type. The study employed a two-factor factorial Randomized Complete Block Design (RCBD). The first factor was shading intensity: N1 = 0%, N2 = 50%, N3 = 70%, and N4 = 90%. The second factor was soil type: T1 = Vertisol, T2 = Regosol, and T3 = Latosol. There were 12 treatment combinations replicated three times, resulting in 36 experimental units. Each unit consisted of five plants, totaling 180 polybags. The selection of soil types was based on the dominant soil distribution in the Special Region of Yogyakarta. Observation data were analyzed using Analysis of Variance (ANOVA) followed by Duncan’s Multiple Range Test (DMRT) at the 5% significance level when significant effects were observed. The results showed that the best growth of Javanese pepper seedlings was obtained in Regosol soil under 50–90% shading intensity.

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Journal Info

Abbrev

JTP

Publisher

Subject

Agriculture, Biological Sciences & Forestry Engineering

Description

Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural ...