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All Journal Jurnal Agrotropika JURNAL HUTAN TROPIS
Yusnita Yusnita
Jurusan Agronomi dan Hortikultura, Fakultas Pertanian, Universitas Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Pengaruh perbedaan jenis benih dan priming terhadap pertumbuhan dan intensitas penyakit bulai pada tanaman jagung Zakiah Selviani; Titik Nur Aeny; Suskandini Ratih Dirmawati; Yusnita Yusnita; Agustiansyah Agustiansyah
JURNAL AGROTROPIKA Vol. 25 No. 1 (2026): Jurnal Agrotropika Vol 25 No 1, Mei 2026
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v25i1.11494

Abstract

This study evaluated the effects of seed type and seed priming on the growth of mays (Zea mays L.) and the intensity of downy mildew disease. The experiment used a factorial Randomized Complete Block Design (RCBD) with a 2 x 4 arrangement, comprising two main factors: seed source (standard seeds and high-zinc content seeds) and priming treatments (no priming, zinc priming, actinomycetes priming, and triple foliar zinc application). The variables observed included plant height, number of leaves, chlorophyll content, and the severity and incidence of downy mildew throughout the growth period. Statistical analysis revealed a significant interaction between seed type and priming treatment on plant growth variables. This interaction had a positive effect on plant growth, indicating that specific combinations of these two factors worked synergistically. Meanwhile, priming treatments using zinc and actinomycetes significantly increased plant height and chlorophyll content, and reduced downy mildew severity, especially during the early growth stages (2–4 weeks after planting). Although seed source alone did not show a significant effect on the observed variables, combinations with certain priming treatments proved effective in enhancing maize plant growth.   KATA KUNCI: Aktinomisetes, penyakit bulai jagung, pertumbuhan tanaman, priming benih, seng
KEANEKARAGAMAN ANGGREK SPESIES DI TAMAN NASIONAL BUKIT BARISAN SELATAN, RESORT SEKINCAU LAMPUNG BARAT Wahyudi Wahyudi; Yoga Handi Sukma; Yusnita Yusnita
Jurnal Hutan Tropis Vol 13, No 3 (2025): Jurnal Hutan Tropis Volume 13 Nomer 3 Edisi September 2025
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v13i3.21916

Abstract

Bukit Barisan holds thousands of species of flora including orchids. However, the existence of orchid species in nature is not widely known. There needs to be exploration and identification regarding the existence of orchid species. The purpose of this study is to identify the types of orchids that grow in the Bukit Barisan Selatan Resort Sekincau National Park area. The method used is the exploration method, the data is analyzed descriptively regarding morphology, way of life and environmental conditions. The results showed that 32 species of orchids were found belonging to 17 genera with habitats growing epiphytic, saprophytic and terrestrial. The environment where it grows is dominated by a humid environment with little sunlight.Bukit barisan menyimpan ribuan spesies flora termasuk anggrek. Namun keberadaan spesies anggrek di alam belum banyak diketahui. Perlu adanya eksplorasi dan identifikasi mengenai keberadaan anggrek spesies. Tujuan penelitian ini adalah mengidentifikasi jenis-jenis anggrek yang tumbuh di kawasan Taman Nasional Bukit Barisan Selatan Resort Sekincau, Kecamatan Sekincau, Lampung Barat. Metode yang digunakan metode jelajah dengan panjang jalur ±10,4 km dengan luas area jelajah sepanjang jalur adalah 5 m² (kanan-kiri jalur jelajah). Data dianalisis secara deskriptif mengenai morfologi, cara hidup dan kondisi lingkungan. Hasil menunjukkan ditemukan 32 spesies anggrek yang tergolong kedalam 17 genus yang didominasi oleh genus Dendribium. Habitat tumbuh anggrek yang ditemukan berupa secara epifit, saprofit dan terestrial. Lingkungan tempat tumbuh berupa berada pada vegetasi lumut, pada lingkungan yang lembab/kering dengan penyinaran matahari penuh dan penyinaran matahari sedikit.
Co-Authors Agustiansyah Agustiansyah Suskandini Ratih Dirmawati Titik Nur Aeny Wahyudi Wahyudi Yoga Handi Sukma Zakiah Selviani