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Komalasari
Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry

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THE EFFECT OF GUANO FERTILIZER APPLICATION ON THE GROWTH OFTOMATO PLANTS (Solanum lycopersicum L.) Komalasari; Ukky Maghfiroti; Cindy Fatika Sari; Chikal Santi Andarista
AGRIBUSINESS JOURNAL Vol. 19 No. 1 (2025): AGRIBUSINESS JOURNAL
Publisher : Syarif Hidayatullah State Islamic University Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/aj.v19i1.48586

Abstract

The high market demand for tomatoes is driven by increasing public consumption from year to year. This high market demand encourages farmers to increase tomato production with superior quality. Guano fertilizer has strategic value for increasing productivity and quality of tomatoes. The use of environmentally friendly and easily accessible guano fertilizer will reduce farmers' dependence on relatively expensive chemical fertilizers, thereby increasing production cost efficiency. This study not only aims to identify the optimal dose of guano fertilizer for tomato growth, but also contributes to the development of a productive, efficient, and environmentally friendly agribusiness production system. This study used a Completely Randomized Block Design with a single factor: guano fertilizer dosage (0, 26, 51, and 71 g per pot), with nine replications, totaling 36 experimental units. The experiment was conducted in a greenhouse using soil media in 19 cm pots diameter, from March 13 to May 8, 2023. Guano fertilizer was applied once 10 days after planting (DAP). Observations on plant height, number of leaves, and leaf area were taken biweekly from 14 to 56 DAP. Data were analyzed using Analysis of Variance in SPSS, followed by Duncan's Multiple Range Test at a 5% significance level. The results showed that the dose of guano fertilizer that significantly affected the increase in plant height, leaf area and number of leaves of tomato plants was dose 2 of 51 grams.
FROM DETECTION TO DECISION: THE ROLE OF HOYER’S SOLUTION IN MANAGING IMPORT RISKS OF SOYBEAN COMMODITIES Ukky Maghfiroti; Komalasari
AGRIBUSINESS JOURNAL Vol. 19 No. 2 (2025): AGRIBUSINESS JOURNAL
Publisher : Syarif Hidayatullah State Islamic University Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/aj.v19i2.48895

Abstract

Soybean production in Indonesia in 2022 will only be able to meet 5% of soybean consumption needs. Import traffic for this commodity increases the risk of Peronospora manshurica. P. manshurica is a quarantine plant pest organism that causes downy mildew epidemics. Hoyer's solution is known to increase the shelf life of characterization results, thereby increasing time and energy efficiency in quarantine activities. The problem formulation for this activity is how to characterize the results of imported soybeans using Hoyer's solution. This activity aims to analyze the results of the characterization of imported soybeans using Hoyer's solution. Characterization of imported soybeans is done by direct test with the following stages: 1) administrative inspection, 2) sampling of imported soybean seeds, and 3) direct test. The observation results showed the presence of P. manshurica. The imported soybeans were proven to be infected with P. Manchuria, which visually had greyish-white crusty seed coats. Hoyers' solution effectively extends the life of preparations and is efficient because P. Manchuria is difficult to identify and cannot be grown on culture media. The discovery of fungi-like white crust symptoms on imported soybeans became the basis for the Animal, Fish, and Plant Quarantine Center's decision to provide fumigation or heating treatment to 80°C before distributing the commodity.
FLOW OF QUARANTINE REQUIREMENTS AND CHARACTERIZATION OF Tilletia sp. ON WHEAT IN DETERMINING IMPORT APPROVAL Komalasari; Ukky Maghfiroti
AGRIBUSINESS JOURNAL Vol. 19 No. 2 (2025): AGRIBUSINESS JOURNAL
Publisher : Syarif Hidayatullah State Islamic University Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/aj.v19i2.48897

Abstract

The high volume of wheat imports in 2022, which reached 9.35 million tons, increases the risk of entry of the quarantine plant pest organism Tilletia sp., classified as Group 1 Category A1. These groups and categories cannot be treated and do not yet exist in Indonesia. Therefore, monitoring the fungus Tilletia sp. must be severe and handled appropriately. This activity aims to understand the flow of quarantine requirements and characterization of Tilletia sp. as a determinant of import approval at the Animal, Fish, and Plant Quarantine Center. The flow of quarantine requirements is implemented when the importer prepares the application file online, Phytosanitary Certificate, Invoice, Bill of Lading, Shipping Instruction, Prior Notice, Certificate of Analysis, Health Certificate, and Application for Import. Wheat commodities, if infected with Tilletia sp., will be detained, and a detention warrant will be issued; if treatment is not given, a destruction order and an extermination report will be issued. Characterization of Tilletia sp. was determined based on the frequency of washing test results. Wheat samples with Tilletia sp. >10 times must be treated with heat treatment to kill the development of spores.  
Co-Authors Chikal Santi Andarista Cindy Fatika Sari Ukky Maghfiroti