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All Journal Jurnal Fitopatologi Indonesia Journal of Tropical Soils Jurnal Ilmu-Ilmu Pertanian Indonesia AGRIVITA, Journal of Agricultural Science Jurnal Agro Jurnal Perlindungan Tanaman Indonesia JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Agrin : Jurnal Penelitian Pertanian Biofarm : Jurnal Ilmiah Pertanian Jurnal Proteksi Tanaman Tropis Jurnal Ilmiah Media Agrosains
Heru Adi Djatmiko
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Agriculture, Biological Sciences & Forestry Environmental Science Medicine & Pharmacology

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Dynamics of Soil Moisture under Different Water Levels and Various Dosages of Organic Fertilizer Nur, Subandi; Suwarto, Suwarto; Saparso, Saparso; Djatmiko, Heru Adi
JOURNAL OF TROPICAL SOILS Vol. 25 No. 3: September 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i3.157-164

Abstract

The study aimed to determine the dynamics of soil moisture in various standing water levels and dosages of organic fertilizer. The experiment was arranged in a Completely Randomized Block Design (CRBD) with a 3 × 3 factorial treatment in 3 replicates. The first factor was 3 different water levels, namely 10 cm (T1), 20 cm (T2), and 30 cm (T3). The second factor was 3 levels of dosages of organic fertilizer, namely 0 g pot-1(P1), 35 g pot-1 (P2), and 70 g pot-1 (P3). The highest of soil moisture was obtained in the 10 cm water levels and 70 g organic fertilizer (T1P3) and the lowest in the 30 cm water levels and without organic fertilizer (T3P1). The highest infiltration rate was obtained in the 30 cm water levels and 70 g pot-1 organic fertilizer (T3P3), the 30 cm water levels and 35 g pot-1 organic fertilizer (T3P2), the 20 cm water levels and 70 g pot-1 organic fertilizer (T2P3), and the lowest in the combination of the 10 cm water levels and without organic fertilizer (T1P1). The highest capillary rate was obtained in the combination of the 30 cm water levels and 70 g organic fertilizer (T3P3) and the lowest in the combination of the 30 cm water levels and without organic fertilizer (T3P1).
MEKANISME ANTAGONIS LIMA ISOLAT Bacillus subtilis TERHADAP Colletotrichum capsici DAN C. gloeospoiroides IN VITRO Wulansari, Nur Kholida; Prihatiningsih, Nur; Djatmiko, Heru Adi
Agrin Vol 21, No 2 (2017): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2017.21.2.371

Abstract

Colletotrichum capsici dan C. gloeospoiroides adalah jamur patogen penting pada cabai merah yang dapatmenurunkan produktivitas. Upaya untuk mengatasi permasalahan ini yaitu dengan pengendalian hayatimenggunakan Bacillus subtilis. Penelitian ini dilakukan untuk mengetahui daya hambat lima isolat B.subtilis yaituB46, B209, B211, B298, dan B315 terhadap patogen C. capsici dan C. gloeospoiroides asal tanaman cabai.Percobaan laboratorium dilakukan berdasarkan Rancangan Acak Lengkap dengan 5 ulangan. Pengujian in vitrodilakukan menggunakan teknik dual culture pada medium PDA. Hasil penelitian menunjukkan efektifitaspenghambatan C.capsici paling baik pada isolat B209 sebesar 34,25%. Efektifitas penghambatan C.gloeospoiroides pada isolat B211 sebesar 28,89%. Efektifitas penghambatan berpengaruh pada bobot keringmisellium dan morfologi hifa C. capsici dan C. gloeospoiroides. Morfologi hifa C. capsici dan C. gloeospoiroidesmengalami lisis, menebal, dan membengkak.Kata kunci: C. capsici, C. gloeospoiroides, B. subtilis, antagonistik, daya hambatABSTRACTColletotrichum capsici and C. gloeospoiroides are an important pathogen on red chili pepper and causedproductivity losses. Biological control using B. subtilis is an attempt to solve the problem. The objectives of thisstudy is to determines the inhibition ability of five B. subtilis isolates, i.e. B46, B209, B211, B298, dan B315against C. capsici and C. gloeospoiroides pathogens from chili pepper. Laboratory experinments arranged incomplete randomized design with five replication. Dual culture method used PDA medium on in vitro test. Resultshowed the best inhibition effectiveness of C.capsici on B209 isolates at 34.25%. The best inhibition effectivenessof C. gloeospoiroides on B211 isolates at 28,89%. The inhibition effectiveness affects mycellium dry weight andhypha morphology of C. capsici and C. gloeospoiroides. Hypha morphology of C. capsici and C. gloeospoiroidesis lysis, thickening, and swelling.Key words: C. capsici, C. gloeospoiroides, B. subtilis, antagonistic, inhibitor ability
Applications of Potassium Fertilizer and Bacillus Sp. Biopesticide for Increasing Tomato Resistance to Bacterial Wilt Disease Prihatiningsih, Nur; Djatmiko, Heru Adi; Rochminarsi, Eny
AGRIVITA Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v33i1.33

Abstract

Bacterial wilt on tomato caused by Ralstonia solanacearum is a crucial disease, because it can reduce yield until 50%. The aims of this research were: 1) to find out biopesticide formula for Bacillus sp.growth, 2) to test Bacillus sp. against R. solanacearum in vitro, 3) to test potassium fertilizer combined with Bacillus sp. for enhancing tomato resistance to the bacterial wilt disease. The research was conducted in 2 steps i.e to test the persistence of Bacillus sp. In biopesticide formula, and to test the best combination of both potassium and the Bacillus sp. biopesticide. The results showed that Bacillus B298 was the best isolate in its persistence on the biopesticide formula of organic growth medium+CaCO3+CMC 1%+mannitol 1%, and in inhibiting R. solanacearum. The best biopesticide formula for the Bacillus sp. persistence was growth organic media+ CaCO3+CMC 1%+mannitol 1%. Bacillus sp. was able to increase tomato resistance to the bacterial wilt disease from the category of susceptible to be tolerant and becoming resistant.Keywords: tomato, Ralstonia solanacearum, potassium and Bacillus sp.
Efektivitas Formula Cair Air Cucian Beras dan Formula Padat Tepung Tapioka Berbasis Bacillus sp. BM1 dan BM3 dalam Meningkatkan Pertumbuhan Bawang Merah Varietas Bima Brebes : Effectiveness of Liquid Rice Washing Water Formulation and Solid Tapioca Flour Formulation Based on Bacillus sp. BM1 and BM3 in Enhancing the Growth of Shallot (Allium ascalonicum L.) Variety Bima Brebes Fitri, Syabila Nurul; Prihatiningsih, Nur; Djatmiko, Heru Adi
Biofarm : Jurnal Ilmiah Pertanian Vol. 21 No. 1 (2025): BIOFARM JURNAL ILMIAH PERTANIAN
Publisher : Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/biofarm.v21i1.6179

Abstract

ABSTRAK Penelitian ini bertujuan untuk mengetahui efektivitas formula cair air cucian beras dan formula padat tepung tapioka berbasis Bacillus sp. BM1 dan BM3 dalam meningkatkan pertumbuhan bawang merah varietas Bima Brebes. Lokasi penelitian di Desa Linggasari, Kecamatan Kembaran, Kabupaten Banyumas. Data yang digunakan berupa data primer yang diambil selama waktu penelitian berlangsung dari bulan Mei 2024 – Oktober 2024. Penelitian ini dilakukan dengan menggunakan rancangan acak kelompok (RAK) non faktorial yang terdiri atas 5 perlakuan, yaitu K (kontrol), A (formula cair air cucian beras Bacillus sp. BM1), B (formula cair air cucian beras Bacillus sp. BM3), C (formula padat tepung tapioka Bacillus sp. BM1), dan D (formula padat tepung tapioka Bacillus sp. BM1). Setiap perlakuan akan diulang sebanyak 5 kali, sehingga terdapat 25 petak perlakuan. Jumlah tanaman sampel setiap perlakuan adalah 15, sehingga terdapat 375 tanaman. Data yang berdistribusi normal dan homogen dianalisis dengan uji ragam atau analysis of variance (ANOVA). Apabila berpengaruh nyata diuji lanjut dengan BNT pada taraf 5%. Menggunakan aplikasi Ms. Excel Office 2021, SPSS 27, dan aplikasi DSAASTAT 1.101. Hasil penelitian ini menunjukkan bahwa formula biopestisida Bacillus sp. BM1, BM3 baik formula cair air cucian beras dan padat tepung tapioka mampu sebagai pemacu pertumbuhan pada tanaman bawang merah Bima Brebes. Kata kunci: Air Cucian Beras; Tepung Tapioka; Bacillus sp.; Bawang Merah
Co-Authors Andri Sugito DARINI SRI UTAMI Dhadhang Wahyu Kurniawan Eny Rochminarsi Erminawati erminawati Fitri, Syabila Nurul Loekas Soesanto Nur Prihatiningsih Nur Prihatiningsih Nur, Subandi Nurwijayanti Resti Fajarfika Saparso Saparso Saputra, Alil Saridewi, Larasati Puspita Suwarto Suwarto Tamrin Khamidi Totok Agung Dwi Haryanto Wulansari, Nur Kholida