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All Journal Agrikultura Planta Tropika Kultivasi
Amalia Tetrani Sakya, Amalia Tetrani
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Agriculture, Biological Sciences & Forestry

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Comparison between the electrical conductivity method and radicle emergence test as a rapid test of sorghum seed vigor Nugraheni, Nugraheni; Pujiasmanto, Bambang; Samanhudi, Samanhudi; Sakya, Amalia Tetrani
Kultivasi Vol 22, No 2 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i2.46547

Abstract

Sorghum (Sorghum bicolor L. Moench) belongs to multipurpose crops. All parts of sorghum can be used both as main products and derivative products; some derivative products produced from the sorghum plant consist of sugar, bioethanol, biomass, handicraft raw materials and starch. This study aims to determine the time required for testing the vigor and viability of sorghum seeds using the electrical conductivity and radicle emergence methods. The study was conducted in two experimental stages using a completely randomized design. The first experiment consisted of two factors: the number of sorghum seeds (40, 70 and 100 grains) and the volume of soaking water (75, 100, 125, and 150 ml). The second experiment consisted of two factors: research method (germination/control method, electrical conduction method, and radicle emergence method) and varieties (consisted of Numbu, Kawali, Suri 3, and Suri 4). The first experiment's results showed that the best electrical conductivity method on Suri 4 varieties were 40 seeds and 150 ml water volume. The electrical conductivity value is negatively correlated with Germination capacity, vigor index, growth of speed, maximum growth potential, and sprout growth rate. Time needed for Electrical Conductivity method in this study was three days. The germination period of 96 hours gives the best results on the radicle emergence of sorghum seed varieties. Vigor index, growth of speed, germination capacity, and maximum growth potential are positively correlated with the value of radicula emergence.Keywords: Electrical Conductivity, Radicle emergence, Vigor, Viability, Germination
Physiological Response of Two Amaranth Varieties (Amaranthus tricolor L.) to Urea Applications Sari, Fevi Catur Wulan; Purwanto, Edi; Rahayu, Muji; Sakya, Amalia Tetrani
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.20933

Abstract

Amaranth, a highly nutritious leaf vegetable, requires adequate nutrients, especially nitrogen fertilizers, to grow well and produce an optimal yield. Urea is commonly used to promote the growth of amaranth plants. This study examined the physiological responses of two varieties of amaranth to the application of urea fertilizer. This study examined the physiological responses of two varieties of amaranth to the application of urea fertilizer. This investigation was conducted in July - August 2023 in Sukosari Village, Jumantono, Karanganyar. The study utilized a completely randomized design (CRD) with two treatment variables. The first variable consisted of a variety of amaranth, including green (B1) and red (B2) varieties. The second variable in the study was the dosages of urea, including 0, 50, 100, 150, 200, 250, and 300 kg.ha-1. The study observed no correlation between various varieties of amaranth and the dose of urea applied in terms of plant growth and physiological activities. There was no discernible impact on the growth or physiological activity of both varieties of amaranth when urea fertilizer was applied. Both varieties of amaranth showed similar physiological responses to urea fertilization. However, the effect of adding urea fertilizer was to enhance the vegetative growth of amaranth plants.
Effects of Biochar and Organic Fertilizer Application on Soybean Growth Under Melaleuca cajuputi Stand Nurmalasari, Aprilia Ike; Rahayu, Muji; Sakya, Amalia Tetrani; Purnomo, Djoko; Arviana, Annisa Dian
Agrikultura Vol 36, No 1 (2025): April, 2025
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v36i1.50692

Abstract

The production of agricultural commodities is affected by the reduction of productive land, whichis due to the land conversion into residential and industrial areas. Maximizing the potential of dry land with biochar and organicfertilizerapplication can potentiallybecome the solution to overcome it. Biochar functions to retain water and hold nutrients, while organic fertilizer can enhance soil fertility. The research aims to analyze the effects of biochar and organic fertilizers application on soybean growth in agroforestry planting areas. This research was conducted at Menggoran Forest Resort, Playen, Gunungkidul, Yogyakarta, from March to June 2022. The experiment was designed in a factorial randomized complete block design (RCBD) with two factors. The First factor was types of biochar (without biochar, rice husk biochar, coconut shell biochar), and the second factor was types of organic fertilizer (without organic fertilizer, chicken manure, cow manure, and goat manure). The observed variables were leaf area index (LAI), specific leaf weight (SLW), leaf area ratio (LAR), specific leaf area (SLA), crop growth rate (CGR), net assimilation rate (NAR), and soil N-total percentage. The data were analyzed using analysis of variance (ANOVA), and if the treatment showed significant differences, Duncan’s Multiple Range Test (DMRT) at a 5% significance level was performed. The results showed no interaction between the type of biochar and the type of organic fertilizer. The application of biochar and organic fertilizers tested did not increase any of the observed growthparameters.The application of organic fertilizer independently has an effect on the percentage of soil N-total, and cow and goat manure application resulted in significantly higher final soil N-total percentages compared to without organic fertilizer treatment.
Co-Authors Arviana, Annisa Dian Bambang Pujiasmanto Djoko Purnomo Edi Purwanto Muji Rahayu Nugraheni Nugraheni Nurmalasari, Aprilia Ike Samanhudi Samanhudi Sari, Fevi Catur Wulan