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All Journal JOURNAL AGRIBUSINESS
Chikal Santi Andarista
Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry

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CHARACTERIZATION OF QUARANTINE PLANT PEST IN IMPORTED POTATO SEEDS AND ITS IMPLICATIONS FOR QUARANTINE MEASURES Cindy Fatika Sari; Chikal Santi Andarista
AGRIBUSINESS JOURNAL Vol. 20 No. 1 (2026): AGRIBUSINESS JOURNAL
Publisher : Syarif Hidayatullah State Islamic University Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/aj.v20i1.50334

Abstract

The high accessibility of potato imports increases the risk of carrying quarantine plant pest organisms. Characterization of pathogenic fungi on potato seedlings is not only identified visually. Several tests  need to be carried out to get accurate results. The blotter test method has become the standard for testing seeds for the Animal, Fish, and Plant Quarantine Center because it is practical, does not require complicated and expensive laboratory equipment, and fungi can be identified effectively. The problem formulation of this research is how the characterization results of potato seed commodities imported from Australia in July 2023 can ensure that the commodities are free from pathogenic fungi. Characterizing imported potato seeds aims to reduce the risk of spreading pathogenic fungi Helminthosporium solani that can harm the agricultural sector. Characterization using the blotter test method goes through 4 stages, 1) sample preparation, 2) sample sterilization, 3) sample incubation, and 4) observation and identification. The characterization results showed that pathogenic fungi were not found in imported potato seed samples from Australia. The fungus found was the species Cephalotrichum brevistipitatum, which is an endophytic fungus, not Helminthosporium solani. The results of this characterization imply that the Animal, Fish, and Plant Quarantine Center released the potato seeds and allowed them to enter Indonesian territory.
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.
Co-Authors Cindy Fatika Sari Komalasari Ukky Maghfiroti