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All Journal Plumula : Berkala Ilmiah Agroteknologi Agrienvi : Jurnal Ilmu Pertanian
Herry Nirwanto
Program Studi Agroteknologi, Fakultas Pertanian, UPN “Veteran” Jawa Timur
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Immunology & microbiology Materials Science & Nanotechnology

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KEANEKARAGAMAN MIKROORGANISME RHIZOSFER DALAM MENEKAN TINGKAT SERANGAN PENYAKIT BULAI PADA TANAMAN JAGUNG DI KABUPATEN JOMBANG Paramitha Pasaribu; Herry Nirwanto; Wiwik Sri Harijani
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 1 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (690.802 KB) | DOI: 10.33005/plumula.v7i1.21

Abstract

One of the most constraint factors among corn farmers, which can cause enormous losses to corn farmers in Indonesia is the downy mildew disease. Losses due to this disease can achieve a loss of up to 90%, controlling of plant pathogens is currently still based on the use of synthetic pesticides, whereas the use of synthetic pesticides on a continuous basis can cause various negative impacts. The negative impact of the use of synthetic pesticides is large enough for the environment one of them is the killing of non-target microorganisms such as fungi and antagonistic bacteria located on the ground especially in the rhizosphere of plants.Therefore need to be followed up research on antagonistic fungus/non parasite for plants derived from rooting corn plant, as a control against pathogen infection. The diversity of microorganisms is important in the balanciation of soil ecosystems. This research aimed to find out the relationship of diversity of microorganisms with the level of maize crop disease, and to know the difference the diversity of rhizosphere microorganisms in corn plantations on different land. The relationship between the diversity of microorganisms and the level of maize crop disease attacks the greater the diversity of microorganisms in the corn crop area, the lower the incidence rate of gallbladder disease. Conversely, the lower the number of microorganisms diversity in the corn crop area will be the higher the rate of bouts disease. The highest diversity index was found in Caruban Village of 1.0983, while the lowest diversity index was found in Sumbersari village of 0,5505, and the lowest level of seizure disease was found in Caruban Village 0.96%, while the highest rate of disease was in Desa Sumbersari by 50%.
MODEL PERKEMBANGAN PENYAKIT BULAI PADA BERBAGAI VARIETAS DI KABUPATEN MOJOKERTO Khansa Amara; Herry Nirwanto; Wiwik Sri Harijani; Latief Imanadi
Plumula : Berkala Ilmiah Agroteknologi Vol 8 No 1 (2020): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1158.646 KB) | DOI: 10.33005/plumula.v8i1.33

Abstract

Peronosclerospora spp. is one of the problems in the cultivation of maize in Indonesia. Damage caused by the fungus Peronosclerospora spp. can reach 90-100% especially in susceptible varieties. Abiotic environmental conditions such as low temperatures and high humidity accompanied by a layer of water on the leaf surface can increase the occurrence of disease. Disease management techniques are still dominated by the application of synthetic fungicides that have several negative impacts, such as killing non-target organisms, increasing pathogen resistance and environmental pollution. However, these impacts can be suppressed through monitoring activities that play a key role in integrated disease management programs. Monitoring activities facilitate the process of epidemiological analysis through a mathematical model approach so that it can be known patterns of development of plant diseases and the rate of infection as a basis in developing disease management strategies. Therefore, it is necessary to conduct research on disease development models ranging from maize varieties in the improvement of maize plants in Mojokerto Regency. The results showed a model that was able to represent the development of downy mildew in Mojokerto was monit. The highest infection rate was on land using P35 variety from other land using NK 6172 variety.
MODEL PERKEMBANGAN PENYAKIT BULAI DENGAN VARIABEL BUDIDAYA DI KECAMATAN PURI KABUPATEN MOJOKERTO Nindias Oktavia Wulandari; Herry Nirwanto; Wiwik Sri Harijani; Latief Imanadi
Plumula : Berkala Ilmiah Agroteknologi Vol 8 No 1 (2020): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (775.652 KB) | DOI: 10.33005/plumula.v8i1.34

Abstract

Downy mildew is a major disease in maize plants in Indonesia. It was reported that yield losses due to downy mildew ranged from 50%-80% in some areas of maize production center. Efforts are made to control downy mildew disease by conducting tillage, crop rotation, intercropping, use of fungicides, and irrigation affect the development of downy mildew. Therefore, efforts to deterimine the most effective control of downy mildew need to be carried out more extensive research, one of which is by looking at the downy mildew development models based on different cultivation variables that aim to find out the variables that influence the high and low incidence of downy mildew in Mojokerto. the results show that the model that is able to represent the development of downy mildew in Mojokerto was monomolecular. The incidence of the disease using varieties P35, NK 7328, NK 6172, NK 212 shows the category of mild attacks and varieties of Bisi 18 shows the category moderate attacks. Tillage is a way of cultivation that influences the low incidence and infection rate of downy mildew in Puri, Mojokerto.
PENGARUH JENIS DESINFEKTAN TERHADAP INFEKSI CENDAWAN PADA BENIH JAGUNG (Zea mays) PEMASUKAN DARI BEBERAPA DAERAH Fatimah Nabila Zahra; Arika Purnawati; Herry Nirwanto
Agrienvi: Jurnal Ilmu Pertanian Vol. 16 No. 1 (2022): Agrienvi : Jurnal Ilmu Pertanian
Publisher : Agrienvi: Jurnal Ilmu Pertanian

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Abstract

Jagung (Zea mays) merupakan salah satu bahan pangan penting di Indonesia karena merupakan sumber karbohidrat kedua setelah beras, sebagai bahan baku industri dan pakan ternak sehingga penting untuk menjaga kualitas benih utamanya terhadap keberadaan cendawan patogen. Penelitian ini bertujuan untuk mengetahui pengaruh jenis desinfektan terhadap infeksi cendawan patogen terbawa benih jagung. Deteksi cendawan patogen pada benih jagung dilakukan menggunakan metode standar pengujian kesehatan benih International Seed Testing Association (ISTA 1996) yaitu metode blotter test. Sterilisasi permukaan dilakukan menggunakan 3 desinfektan yaitu sodium hipoklorit (NaOCl) 1% (10 menit), alkohol 70% (10 menit), dan campuran sodium hipoklorit (NaOCl) 1% dengan alkohol 70% (10 menit). Metode penelitian adalah melakukan pembandingan efektivitas penggunaan desinfektan, dan setiap sampel menggunakan ±200 butir benih. Pengamatan dilakukan terhadap homogenitas jumlah benih terinfeksi dan indeks keragaman cendawan. Hasil menunjukkan bahwa semua perlakuan desinfektan menekan infeksi cendawan patogen pada benih jagung yaitu masing-masing NaOCl 1% sebesar 84%, alkohol 70% sebesar 64%, campuran NaOCl 1% dengan alkohol 70% sebesar 61%, indeks keragaman cendawan yaitu masing-masing NaOCl 1% (1,15 temasuk sedang), alkohol 70% (0,62 termasuk rendah), campuran NaOCl 1% dengan alkohol 70% (0,55 termasuk rendah).
POLA DISTRIBUSI PENYAKIT KRESEK PADA PERTANAMAN PADI DI LAHAN DENGAN TINGKAT KEASAMAN BERBEDA BERBASIS CITRA FOTO UDARA Maria Rodhya Alfa; Herry Nirwanto; Arika Purnawati
Plumula : Berkala Ilmiah Agroteknologi Vol 10 No 2 (2022): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v10i2.81

Abstract

Rice (Oryza sativa L.) is one of the most important food crops in the world after maize and wheat. Rice production has decreased due to one of the limiting factors, namely bacterial leaf blight (BLB). The purpose of this study was to determine the effect of soil acidity/alkalinity(pH) on the pattern of BLB disease distribution on rice fields in Sidoarjo through direct observation and observations through aerial photography. The research was conducted by observing rice plants that were attacked by bacterial diseases on an area of ​​800 m2. Direct observations were made to obtain the incidence of disease and the edaphic factor of the pH value of the water in field. Observations through aerial photography were carried out to obtain digital images of rice fields with BLB disease. Disease incidence data is processed descriptively, pH value data is compared with distribution pattern data, while digital images are processed using the RGB method with the MATLAB R2018a. The pattern of BLB disease distribution based on direct observations on the ground and through aerial photography was cluster distribution at weeks 1 and 2, then random distribution at weeks 4 to 6. Week 3 was detected as random distribution on direct observation but was detected as cluster distribution on observations through aerial photography. Observations through aerial photography are rated higher in validity than direct observations on the ground. The distribution pattern of bacterial diseases in rice fields is not affected by the pH value.
POTENSI BAKTERI Bacillus spp. DALAM MENGHAMBAT Colletotrichum capsici PENYEBAB ANTRAKNOSA PADA CABAI MERAH SECARA IN VITRO Sasiska Rani; Endang Triwahyu Prasetyawati; Herry Nirwanto
Plumula : Berkala Ilmiah Agroteknologi Vol. 10 No. 1 (2022): Plumula : Berkala Ilmiah Agroteknologi
Publisher : Agrotechnology Study Program, UPN "Veteran" Jawa Timur

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Abstract

Colletotrichum capsici merupakan jamur patogen penting penyebab penyakit antraknosa pada cabai merah. Salah satu upaya untuk mengatasi permasalahan ini yaitu dengan penggunaan agens hayati bakteri Bacillus spp.. Penelitian ini bertujuan untuk mengetahui potensi lima isolat bakteri Bacillus spp. yaitu Ba-6, Ba-9, Ba-12, Ba-15, dan Ba-17 dalam menghambat patogen C. capsici Penelitian laboratorium dilakukan menggunakan Rancangan Acak Lengkap dengan 4 ulangan. Pengujian in vitro dilakukan dengan teknik dual culture pada media PDA dan detach fruit test pada buah cabai.Hasil penelitian menunjukkan efektifitas perhambatan C. capsici paling baik pada pengujian in vitro media PDA yaitu Bacillus sp. isolat Ba-9 dengan penghambatan sebesar 23,04%. Selanjutnya dalam uji detach fruit, Bacillus sp. isolat Ba-9 mampu menekan pertumbuhan C. capsici sebesar 21,25% dibandingkan kontrol.
POLA DISTRIBUSI PENYAKIT KRESEK PADA PERTANAMAN PADI DI LAHAN DENGAN TINGKAT KEASAMAN BERBEDA BERBASIS CITRA FOTO UDARA Maria Rodhya Alfa; Herry Nirwanto; Arika Purnawati
Plumula : Berkala Ilmiah Agroteknologi Vol. 10 No. 2 (2022): Plumula : Berkala Ilmiah Agroteknologi
Publisher : Agrotechnology Study Program, UPN "Veteran" Jawa Timur

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Abstract

Tanaman padi (Oryza sativa L.) merupakan salah satu tanaman pangan paling penting di dunia setelah jagung dan gandum. Produksi padi mengalami penurunan dikarenakan salah faktor pembatasnya yaitu hawar daun bakteri (HDB) / kresek. Tujuan penelitian ini adalah mengetahui pengaruh derajat keasaman/kebasaan(pH) tanah pada pola sebaran penyakit kresek dan pada lahan pertanaman padi di Sidoarjo melalui pengamatan langsung pada tanaman dan pengamatan melalui foto udara. Penelitian dilakukan dengan mengamati pertanaman padi yang terserang penyakit bakteri pada lahan seluas 800 m2. Pengamatan langsung dilakukan untuk mendapatkan insidensi penyakit dan faktor edafik nilai pH genangan air. Pengamatan melalui foto udara dilakukan untuk memperoleh citra digital lahan padi yang berpenyakit kresek. Data insidensi penyakit diolah secara deskriptif, data nilai pH dibandingkan dengan data pola sebaran, sedangkan citra digital diolah menggunakan metode RGB dengan aplikasi MATLAB R2018a. Pola sebaran penyakit kresek berdasarkan pengamatan langsung di darat dan melalui foto udara adalah mengelompok pada minggu 1 dan 2, lalu acak pada minggu 4 hingga 6. Minggu 3 terdeteksi acak pada pengamatan langsung namun terdeteksi mengelompok pada pengamatan melalui foto udara. Pengamatan melalui foto udara dinilai lebih tinggi validitasnya daripada pengamatan langsung di darat. Pola sebaran penyakit bakteri pada lahan padi tidak dipengaruhi nilai pH.
Co-Authors Arika Purnawati Endang Triwahyu Prasetyawati Fatimah Nabila Zahra Khansa Amara Latief Imanadi Maria Rodhya Alfa Nindias Oktavia Wulandari Paramitha Pasaribu Sasiska Rani Wiwik Sri Harijani