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All Journal Plantropica: Journal of Agricultural Science Journal of Tropical Plant Protection AGRIVITA, Journal of Agricultural Science Jurnal HPT (Hama Penyakit Tumbuhan)
Tita Widjayanti
Unknown Affiliation
Agriculture, Biological Sciences & Forestry

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The Influence of Trap and Refugia Plants on Populations and Attacks of Leaf-Miner Flies Liriomyza sp. on Shallots Cultivation Setiawati, Lia; Mudjiono, Gatot; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 4 No. 1 (2023)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2023.004.1.1

Abstract

Leaf miners (Liriomyza sp.) are one of the pests affecting shallot plants. Attacks by Liriomyza sp. on shallot plants lead to tuber rot and leaves drying out, resembling burn damage. One control method is to utilize trap plants and refugia. Trap plants are specific species that attract pests, diverting them from the main crop. Refugia, on the other hand, are areas where pests can seek shelter, reducing their impact on the main crop. This study aimed to assess the impact of trap plants and refugia on the population and attacks of Liriomyza sp. in shallot crops. The research was conducted from June to September 2021 at the experimental field of the Faculty of Agriculture in Jatimulyo Village, Lowokwaru District, Malang City, East Java. Observation parameters included the population of Liriomyza sp., damage intensity, population of natural enemies, plant height, and number of leaves. The results indicated that different types of trap plants significantly influenced the population of Liriomyza sp. and damage intensity compared to the control treatment. However, different trap plant types did not significantly affect the population of natural enemies. The natural enemies identified included Vespidae, Coenosia sp., and Opius sp. Additionally, various trap plant types did not significantly impact plant height and the number of leaves.
The Effectiveness Test of Trichoderma harzianum, Mycorrhiza and Bacteria B8 on the Growth of Phytophthora nicotianae in Pineapple Plants (Ananas comosus L. Merr) at PT.Great Giant Pineapple Larasati, Candra Violita; Syamsulhadi, Mochammad; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 4 No. 2 (2023)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2023.004.2.5

Abstract

This study aims to determine the potential of biological agents to inhibit the pathogen P.  nicotianae that causes liver rot and the effect of biological agents on the growth of pineapple plants at PT. Great Giant Pineapple. The research was carried out at the Experimental Field and Research and Development Protection Laboratory of PT. Great Giant Pineapple, Terbanggi Besar, Central Lampung from September to November 2022. The research was carried out in several stages, namely the preparation stage and the implementation stage. The preparation stage includes land preparation, breeding and application of T. harzianum, preparation of liquid culture of T. harzianum and B8 bacteria, dipping crowns, and selection of crowns and tagging. While the implementation phase includes planting, application of T. harzianum, mycorrhiza, and B8 bacteria, observation of disease occurrence level, antagonist test, observation of new leaf growth, and plant observation. The data obtained were analyzed using the T-test, which compared the control plot with the treatment plot (T. harzianum, mycorrhiza, and B8 bacteria). The results showed that the application of the biological agent T. harzianum had a significant effect on suppressing the pathogen P. nicotianae that causes heart rot in pineapple plants in vitro. In addition, the application of T. harzianum, mycorrhiza, and B8 bacteria significantly affected the growth of the number of tillers, d-Leaf height, and d-Leaf index.
Co-Authors Akhmad Rizali Bambang Tri Rahardjo Eva Febriyanti Fitriyah, Vebriyanti Gatot Mudjiono Hastawulan, Anastassia Wita Aryandini Joko Siswanto Julia Putri Pramudita Larasati, Candra Violita Mahendra, Niko Prayogo, Bagas Agung Restikasari, Viera Annisa Rina Rachmawati Rosandy, Devia Fitri Septiani, Rohma Wulan Setiawati, Lia Sri Karindah Syamsulhadi, Mochammad Taufiqurrahman, Achmad Fitriadi Yolla Frinsiska Rama