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Journal : AGRIC

EKSTRAKSI BETASIANIN DARI KULIT UMBI BIT(Beta vulgaris) SEBAGAI PEWARNA ALAMI Martinus Andree Wijaya Setiawan; Erik Kado Nugroho; Lydia Ninan Lestario
Agric Vol. 27 No. 1 (2015)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2015.v27.i1.p38-43

Abstract

The aim of this research was to know most effective solvent comparison (ethanol, ethanol:HCL, ethanol: Citric Acid) on the betacyanin extract properties from Beet Peel. The characteristic of Beet Peel contain 82,85 percent water, fiber 5,95 percent, ash 1,33 percent, and lipid 0,31 percent. The research was also aimed to know potential of Beet Peel for narutal dyes. This research was conducted only to compare effectivity of three different solvent that use to extract Beet Peel, temperature that use for extraction are the same at 30oC for 40 minute. The bestcharacteristic of extract was obtained from the ethanol:HCL with betalain of 2,4535 mg/100g.
Effect Of Led Light Source Variation Toward Curly Lettuce (Lactuca sativa Var. Crispa L) Growth And Yield In Antonius Novinanto; Andree Wijaya Setiawan
Agric Vol. 31 No. 2 (2019)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2019.v31.i2.p191-204

Abstract

In conventional curly lettuce cultivation there are several obstacles such as altitude, temperature, humidity, nutrient availability and light intensity that caused lettuce can not grow optimally. Indoor cultivation is one way to overcome problems that occurred in conventional cultivation, one of which is the intensity of light that is not suitable for the growth of lettuce plants. This study aims to determine the optimal LED electrical power and the effect of white LED lights and grow light on growth of lettuce plants with floating raft hydroponic cultivation system. This research has been carried out at Satya Wacana Christian University’s Faculty of Agriculture and Business seed laboratory. The study used a randomized block design with six treatments: 100 watt grow light; 200 watt grow light; 300 watt grow light; 100 watt white light; 200 watt white light; 300 watt white light, which will be repeated four times. Parameters to be measured include the number of leaves, canopy diameter, crown wet weight, root wet weight, chlorophyll b, total chlorophyll and leaf area. Light intensity treatment carried out with a box with a size of 1x1 m placed in a dark room. The results showed that the 300 watt grow light treatment gave the best results, with canopy diameter (45.10 cm), number of leaves (18.25 strands), canopy wet weight (225,967 g), heavy dry canopy weight (9.90 g), canopy dry weight (4.75 g), and leaf area 6195,378 (mm).
PENGARUH KONSENTRASI DAN FREKUENSI PEMBERIAN GIBERELIN TERHADAP PERTUMBUHAN TANAMAN ARTEMISIA ANNUA Linn Fransisca Mareta Kurnia Sari; Maria Marina Herawati; Endang Pudjihartati; Martinus Andree Wijaya Setiawan
Agric Vol. 34 No. 1 (2022)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2022.v34.i1.p15-22

Abstract

Artemisia is one of the plants that can be used as an alternative medicine for malaria. The Artemisia plant contains secondary metabolites in the form of artemisinin compounds that function as antimalarials. One of the efforts that can be done to increase the growth of Artemisia annua. plants is by using a growth regulator of gibberellins (GA3). Using a Randomized Block Factorial Designs (RBFD) with the first factor being the concentration of 50 mg.L-1 (K1), mg.L-1(K2), 150 mg.L-1 (K3), 200 mg.L-1 (K4). The second factor has 3 frequencies, 1 time giving 7HSPT (F1), 2 times giving 7HSPT and 14HSPT (F2), and 3 times giving 7HSPT, 14HSPT and 30HSPT (F3). In addition, there were plants that were not given GA3 control (without treatment). Parameters observed were plant height, leaf area, glandular trichome density, and plant dry weight. The results showed that the administration of gibberellins (GA3) with different concentrations and frequencies on plant height, leaf area, glandular trichome density, and dry weight of A. annua plants had no significant effect. Plants have not been able to grow properly because the provision of gibberellins that have not been active stimulates all plant tissues and directly seeps through the roots, stems and leaves.
SAFEGUARDING INDONESIA'S CASSAVA INDUSTRY: CRITICAL RESPONSE TO SLCMV'S ADVANCE IN SOUTHEAST ASIA Setiawan, Andree Wijaya; Kusuma, Asista Fatma
Agric Vol. 36 No. 2 (2024)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2024.v36.i2.p329-339

Abstract

Sri Lankan Cassava Mosaic Virus (SLCMV) has emerged as a significant threat to cassava production in Southeast Asia since its initial detection in Cambodia in 2015, with recent outbreaks in Vietnam and Thailand and its first detection in Australia in 2024. This viral disease, transmitted by the whitefly Bemisia tabaci and infected planting materials, poses a substantial risk to Indonesia's cassava industry. Studies from affected countries demonstrate yield losses of 16-33% and starch content reductions of 22-38% in infected plants. This review analyzes SLCMV's current status and potential impacts on Indonesian cassava production and proposes management strategies based on regional experiences. We identify critical risk factors, including widespread vector presence and informal planting material exchange networks. Recommended preventive measures include strengthening quarantine systems, implementing enhanced surveillance programs, developing rapid diagnostic capabilities, and establishing clean seed certification systems. Our findings emphasize the urgent need for coordinated action to protect Indonesia's cassava industry from this emerging pathogen.
PESTS INTENSITY IN POTATO (Solanum tuberosum) AND FABA BEAN (Vicia faba) INTERCROPPING IN SALARAN, GETASAN DISTRICT, SEMARANG REGENCY Setiawan, Andree Wijaya; Simanjuntak, Bistok Hasiholan; Andhika, Gideon Febby Prima
Agric Vol. 36 No. 1 (2024)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2024.v36.i1.p113-130

Abstract

Tropical regions face threats from pests, leading to significant losses in the global potato supply. Intercropping potatoes with faba beans is being explored to control pest infestations in tropical areas. This study aims to provide insights into pest dynamics and improve pestmanagement strategies for sustainable potato cultivation. The research evaluates five cropping systems, each replicated across seven beds: potato monoculture, alternating growth of potatoes and faba beans at a 2:1 ratio, planting faba beans between the rows of potatoes at a 1:1 ratio, growing faba beans between two beds of potatoes, and cultivating solely faba beans. The study looked at various factors such as the type and intensity of pest attacks on potatoes. It found that planting faba beans alongside potatoes can help reduce aphid (Homoptera: Aphididae) and mirid bug (Hemipetra: Miridae) attacks, but may not affect grasshopper (Orthoptera: Acrididaeand Pyrgomorphidae) attacks. The distance between potato beds and the population of faba bean plants can also influence pest interactions. Understanding these dynamics offers important information for sustainable pest management practices in intercropping systems.