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All Journal MAPETA Plumula : Berkala Ilmiah Agroteknologi AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Pertanian Terapan JURNAL AGROHITA Agro Bali: Agricultural Journal Agrienvi : Jurnal Ilmu Pertanian Jurnal Agrotropika Biofarm : Jurnal Ilmiah Pertanian Nusantara Science and Technology Proceedings Journal of Applied Agricultural Science and Technology

Herry Nirwanto

Program Studi Agroteknologi, Fakultas Pertanian, UPN “Veteran” Jawa Timur

Author-ID : 330915

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Other

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KORELASI PENYAKITVIRUS TUNGRO DENGAN BERBAGAI JENIS WERENG PADA TANAMAN PADI (Oryza sativa) Di JAWA TIMUR Hamid, Abdul; Nirwanto, Herry
MAPETA Vol 12, No 1 (2009): MAPETA
Publisher : MAPETA

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ABSTRACTThe objective of research is to know the correlation between Tungro disease and various leafhopper at paddy crop in some sub-province East Java. Making ofepidemic model conducted by using obtained data of laboratory Perception of Pest and Disease of Crop Food and Horticulture and also Report Observer of Pest Disease . Data analysis was based on the intensity of tungro disease, the frequency of rainy day and rainfall per month, pattern of planting, population of green leafhopper, as well as competitor insect as natural enemy. Correlation and multiple regression analysis was used to make epidemic model. The results of this study indicated that epidemic model of tungro disease with linear regression was Y= 641.659 + 1.925 ( Rainfall + 17.815 (Green leafhopper)) + 30.014 ( Brown leafhopper) + 60.493 ( Zigzag leafhopper) - 59.444 ( spider) - 122.425 ( Rain day) ( R = 0.988). This model significantly can explain correlation between rainfall, rainy day, vector insect to the severity of tungro disease at paddy crop. Keyword: Model, Tungro disease, green leafhopper

KAJIAN ASPEK SPASIAL PENYAKIT BERCAK UNGU (A lternaria porri Cif. (Ell) PADA TANAMAN BAWANG MERAH Nirwanto, Herry
MAPETA Vol 10, No 3 (2008): MAPETA
Publisher : MAPETA

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The research was conducted at ex-rice field farm in countryside of Klerek, district of Junrejo, Batu. The research took place in rainy season from October until December 2005. Research location resided at height 800 m above sea level. To understand the distribution of purple blotch disease at each observation time, data was obtained from the amount of leaf infection at every crop clump of sample from each experiment plot. The result of the research showed that at age 49 and 52 days after planting, patogen distributed randomly. At the time of early observation 49 days after planting, the distribution of disease followed theory distribution, that is, poisson distribution (p== 0,57). Hereinafter, at age 52 and 55 days, pathogen disseminate aggregately, by increasing age until age 61 days after planting, the distribution of patogen reverse to have random character. The development of disease in the early observation was linear and at age 58-61 days after planting, it started in fonn of curvilinier. Key words: Alternaria porri, bawang merah, distribusi, laju infeksi

Biodiversity of Endophytic Bacteria from Egg Plant in Lowland Purnawati, Arika; Nirwanto, Herry
Nusantara Science and Technology Proceedings 5th International Seminar of Research Month 2020
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.0934

Endophytic bacteria are a group of microbes that live in plant tissues without causing negative effects and don’t cause sick on plants, are found in various plants, and can be isolated from all parts of the plant: roots, stems, and seeds. Endophytic bacteria in nature, have high diversity because in a single plant can be found more than one kind of endophytic bacteria, so many plants found many kinds of endophytic bacteria. Endophytic bacteria that have been isolated and identified from eggplants. This study aimed to isolate endophytic bacteria from eggplants in lowland Kandat Kediri. Crop sampling was conducted using a systematic random method. The research stages are surveys and microbial isolation of endophytes. Isolation is done from the stems of a healthy eggplant around the sick eggplant. The crop samples were then washed with running water and cut 1-3 cm. The cutting was sterilized by ethanol 70% (30 sec), sodium hypochlorite 5% (5 min), ethanol 70% (30 sec) and rinsed with sterile water (3 minutes). The results are from the stem get 10 isolates of endophytic bacteria that have different characteristics.

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

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%.

FORMULASI BIOFERTILIZER GRANULAR BERBAHAN MIKROBA Trichoderma sp. Rizky Nur Affandy; Herry Nirwanto; Wiwik Sri Harijani
Plumula : Berkala Ilmiah Agroteknologi Vol 7 No 2 (2019): Plumula : Berkala Ilmiah Agroteknologi
Publisher : UPN VETERAN JAWA TIMUR

Granular formulation of Trichoderma sp. is a fertilizer containing live microorganisms that are given to plants useful in providing nutrients needed in plant growth and as biological agents. This study aims to determine the effect of giving granular formulations of Trichoderma sp. as a biofertilizer in chili plants. This study used a completely randomized design (CRD) with 4 treatments repeated 6 times. This test uses the shelf life of the Granular Trichoderma sp. Formulation. 7 weeks old. The stages of the study included making suspension of Trichoderma sp., making granular formulations of Trichoderma sp., The preparation of the application of granular formulations on chili plants. The results showed that the granular formulation of Trichoderma sp. the compost carrier can act as the most effective biofertilizer in influencing the height, number of leaves, and dry weight in chili plants.

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

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

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.

MARSSONINA LEAF BLOTCH ON THE APPLE ORCHARD IN BATU, INDONESIA Ika Rochdjatun Sastrahidayat; Hery Nirwanto
AGRIVITA, Journal of Agricultural Science Vol 38, No 2 (2016): JUNE
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.v38i2.635

In Indonesia, apple orchards are decreasing because of leaf blotch disease. Marssonina leaf blotch has not been widely known and the problems are associated with the incidence of the epidemic so they need to be studied. Research aimed to investigate the biological aspect of Marssonina leaf blotch, the resistance of apple varieties and the alternative host of Marssonina coronaria, and the interactions between Marssonina leaf blotch and weather factors. The research was conducted in laboratory, greenhouse and on apple orchard respectively. There are three results in this research. First, fruit bodies (apothecia) are not produced by fungus, but only conidia (imperfect form) are. Second, based on bioassay, pathogen survives only on the apple. Finally, there are three formula can be used to predict the leaf blotch disease, such as:1) Y=-37.91+19.98X6 (population of spores in the air),2) Y = -438.13 + 25.71X1 (temperature) -3.05X2 (humidity) + 41.07X3(wind speed) -2.07X4 (sunlight) + 19.25X5 (rainfall), and 3) Y = -43.86-1.61 22.60 X5 (rainfall) + X6 (population of spores).

KAJIAN POLA SEBARAN PENYAKIT BULAI DENGAN ANALISIS CITRA DRONE M Rifqi Haikal; Herry Nirwanto; Tri Mujoko
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 7, No 2 (2022): JURNAL AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v7i2.6105

Jagung merupakan tanaman pangan yang penting di Indonesia dengan menjadi sumber pangan pokok ketiga setelah padi dan gandum. Penurunan produksi jagung dapat diakibatkan oleh Peronosclerospora spp. penyebab penyakit bulai yang merupakan penyakit utama yang meyerang tanaman jagung di Indonesia. Upaya pengendalian penyakit bulai harus diikuti dengan melakukan survei atau pemantauan di lahan pertanaman untuk melihat gejala kerusakan dan pola sebaran penyakit tersebut. Pemantauan di lapangan secara langsung terdapat banyak kekurangan seperti hasil yang bersifat subjektif dan membutuhkan waktu dan tenaga yang lebih banyak. Penelitian ini bertujuan untuk mendapatkan informasi mengenai penggunaan drone untuk mendeteksi gejala dan pola sebaran penyakit bulai sehingga lebih efektif dan efisien. Penelitian ini dilaksanakan di lahan tanaman jagung di Desa Sumbertebu, Kecamatan Bangsal, Kabupaten Mojokerto. Pengamatan dilakukan selama enam minggu dengan dua metode yakni pengamatan secara langsung dan melalui hasil analisis citra drone. Hasil penelitian menunjukkan bahwa pola sebaran penyakit bulai adalah acak. Citra drone dapat mendeteksi gejala serta menunjukkan pola sebaran penyakit bulai dengan memerhatikan ketinggian, intensitas cahaya matahari, dan objek di sekitar tanaman jagung.

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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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).

Co-Authors Alfa, Maria Rodhya Arika Purnawati Endang Triwahyu Prasetyawati Fatimah Nabila Zahra Hamid, Abdul Hani Septikahady Ika Rochdjatun Sastrahidayat Khansa Amara Khansa Amara Latief Imanadi M Rifqi Haikal Maria Rodhya Alfa Nabila Alysia Multazam Nindias O. Wulandari Nindias Oktavia Wulandari Nisa, Isnaini Lailatun Noni Rahmadhini Paramitha Pasaribu Prasetyo, Dandy Putra, Dandi Rahmansyah Ramadhini, Noni Rizky Nur Affandy Sarah Hikmah Marieska Sarah Hikmah Marieska Sasiska Rani Sri Wiyatiningsih Sutikno Sutikno Taufik Hidayat Tri MUJOKO Umam, Amirul Widajati, Wiludjeng Windriyanti, Wiwin Wiwik Sri Harijani Wiwik Sri Harijani Yenny WURYANDARI

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