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Journal : Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)

Study of Paclobutrazol Dosage and Seed Size on Growth and Yield of Porang (Amorphophallus onchophyllus P.) Sefti Nurul Hidayah; Ramdan Hidayat; Nova Triani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.574-588

Abstract

The konjac plant (Amorphophallus oncophyllus Prain.) contains high glucomannan with many benefits.  This experiment aimed to study effect of paclobutrazol dose and seedling size on the growth and yield of konjac plants.  The research was arranged factorially based on a Completely Randomized Design with two factor.  The first factor (paclobutrazol dose) consisted of P0: 0.0 g/plant, P1: 0.05 g/plant, P2: 0.10 g/plant, P3: 0.15 g/plant, P4: 0.20 g/plant.  The second factor (seed size) consisted of U1: 20-50 g/seed, U2: 100-150 g/seed, U3: 200-250 g/seed. Observation parameters included plant height, canopy diameter, stem diameter, stem sturdiness, number of buds, weight and diameter of tubers.  Results showed that paclobutrazol dose of 0.20 g/plant had a significant effect on stem sturdiness, weight and diameter of the tubers. The maximum of tuber weight obtained by paclobutrazol application of 0.2 g/plant was estimated to be 1,533 g with tuber diameter of 167 mm.  Small size seed (20-50 g) produced the largest number of buds and did not differ markedly from those of medium size seed (100-150 g).  Large size seed (200-250 g) produced the best konjac plants in term of canopy diameter, stem sturdiness, weight and diameter of tubers. Keywords : Dosage, Konjac, Paclobutrazol, Seed Size, Tuber Size
The Effect of Rootone F Concentration and Planting Media Composition on the Growth of Fig (Ficus carica L.) Cuttings Samodro, Intan Febriana; Sutini, Sutini; Hidayat, Ramdan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 4 (2025): August 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i4.1189-1198

Abstract

Fig cuttings often face problems with failure of the roots to grow from the cuttings, so efforts are needed to encourage root induction by administering auxin growth regulators. Rootone F is an exogenous PGR from the auxin group which can stimulate root growth. In order for the roots to grow, develop and function well, plants need an ideal planting medium. The ideal planting medium to support good growth of plant seeds is a proportional composition of physical, chemical and biological elements. The aim of the research was to examine the combined effect of Rootone F concentration and planting media composition on the vegetative growth of fig cuttings. The research consisted of two treatment factors, namely the concentration of Rootone F (0 ppm (Control), 100 ppm, 150 ppm and 200 ppm) and the composition of the planting media (soil: husk charcoal: cow manure) with a ratio (1:1:1), (2:1:1), and (3:1:1). The best treatment combination is 150 ppm Rootone F and planting media mixed with soil: roasted husks: organic cow fertilizer with a ratio of 3:1:1 which has a significant effect on shoot length, root length, fresh weight of roots and percentage of live cuttings (%). A concentration of 100 ppm Rootone F gave the best results when the first shoots appeared (DAT), a concentration of 150 ppm Rootone F gave the best results on the number of leaves. A planting medium composition of (3:1:1) gives the best results when the first shoots appear (DAT).   Keywords: Auxin, Growth regulator, Influence, Nutrient, Vegetative.
Study of Paclobutrazol Dosage and Seed Size on Growth and Yield of Porang (Amorphophallus onchophyllus P.) Hidayah, Sefti Nurul; Hidayat, Ramdan; Triani, Nova
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 11 No. 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.574-588

Abstract

The konjac plant (Amorphophallus oncophyllus Prain.) contains high glucomannan with many benefits.  This experiment aimed to study effect of paclobutrazol dose and seedling size on the growth and yield of konjac plants.  The research was arranged factorially based on a Completely Randomized Design with two factor.  The first factor (paclobutrazol dose) consisted of P0: 0.0 g/plant, P1: 0.05 g/plant, P2: 0.10 g/plant, P3: 0.15 g/plant, P4: 0.20 g/plant.  The second factor (seed size) consisted of U1: 20-50 g/seed, U2: 100-150 g/seed, U3: 200-250 g/seed. Observation parameters included plant height, canopy diameter, stem diameter, stem sturdiness, number of buds, weight and diameter of tubers.  Results showed that paclobutrazol dose of 0.20 g/plant had a significant effect on stem sturdiness, weight and diameter of the tubers. The maximum of tuber weight obtained by paclobutrazol application of 0.2 g/plant was estimated to be 1,533 g with tuber diameter of 167 mm.  Small size seed (20-50 g) produced the largest number of buds and did not differ markedly from those of medium size seed (100-150 g).  Large size seed (200-250 g) produced the best konjac plants in term of canopy diameter, stem sturdiness, weight and diameter of tubers. Keywords : Dosage, Konjac, Paclobutrazol, Seed Size, Tuber Size
Physical and Physiological Quality of Rice Seeds of Inpari 32 Variety Under Different Harvest Ages, Packaging Types, and Storage Durations Fathoni, Arif; Hidayat, Ramdan; Santoso, Juli
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1869-1881

Abstract

This study aimed to determine the optimal harvest time and packaging type to preserve the quality of Inpari 32 rice seeds during storage. Conducted at the Food and Horticultural Plant Seed Supervision and Certification Unit in East Java from November 2023 to April 2024, the research used a factorial experiment in a completely randomized design (CRD) with three replications. Harvest age treatments were 110, 120, 130, and 140 days after seedling (DAS), while packaging types included plastic sacks, polyethylene (PE) sacks, polypropylene (PP) sacks, and aluminium foil. Data were analyzed using ANOVA and Duncan's Multiple Range Test (DMRT) at a 5% significance level. Results showed that harvesting at 120 DAS with PP sacks yielded the highest starch content, while 140 DAS with aluminium foil resulted in the lowest reducing sugar content. Optimal germination and growth speed were achieved at 130 DAS, which also minimized electrical conductivity. Harvesting at 140 DAS produced the highest 1000-grain weight. Aluminium foil packaging maintained the lowest moisture content and significantly improved germination and growth speed compared to other packaging types. These findings suggest that optimizing harvest age and packaging type can significantly improve seed viability and storage performance.
Growth and Yield Response of Sunflower (Helianthus annuus L.) Plants to Paclobutrazol Dosage and Application Time Fitriyah, Fitriyah; Hidayat, Ramdan; Widiwurjani, Widiwurjani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1819-1828

Abstract

Sunflower (Hellianthus annuus L.) has high economic value due to its great potential in industry. High market demand causes the need for intensification in sunflower cultivation to increase production and seed quality. This study aims to determine the right dosage and time of paclobutrazol application in suppressing growth and increasing the yield of sunflower plants. The research was conducted in Dohoagung Village, Balongpanggang District, Gresik Regency from May to September 2024. This research used a Factorial Completely Randomized Design (CRD) with 2 factors, namely dose and application time. The two treatments resulted in 12 combinations, each of which was repeated three times. The results of the analysis of variance were further tested with the 5% HSD test.  The results show that the combination of paclobutrazol dosage of 0.3 g/plant and application time of 4 WAP gives the best results on plant growth (plant height and stem diameter). The single treatment of paclobutrazol dosage of 0.2 g/plant gave the best results on flower diameter, number of seeds, total seed weight and 100 seed weight. A single treatment of paclobutrazol application time at 4 WAP produced the best plant growth and increased flower diameter.