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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu-Ilmu Pertanian
Pitri Ratna Asih
Departemen Agronomi dan Hortikultura, Fakultas pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti Kampus IPB Darmaga 16680, Indonesia
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Kombinasi Naa Dan Tdz Dengan Berbagai Taraf Konsentrasi Dalam Kultur In Vitro Tanaman Pisang Cavendish (Musa Acuminata C.) Wisesa , Cindekia Purba; Asih, Pitri Ratna; Farmia, Asih
Jurnal Ilmu-Ilmu Pertanian Vol. 29 No. 1 (2022): Jurnal Ilmu Ilmu Pertanian
Publisher : Politeknik Pembangunan Pertanian Yogyakarta-Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55259/jiip.v29i1.6

Abstract

The objective of the study is to obtain best composition of Plant Growth RegulatorTDZ and NAA for 1.) shoot multiplication, 2.) root formation of cavendish banana using in vitro methods. This research was conducted at Biotechnology Laboratory of Agriculture Development Polytechnic Yogyakarta-Magelang Department of Agriculture. This research was carried out from 27th January to 20th April 2022. The experimental design was factorial design that consisted of two factors and arranged in Completely Randomized Design with five replicates. The first factor was medium containing TDZ with four levels of concentration, these are 0 ppm, 0,1 ppm, 0,2 ppm, and 0,3 ppm. The second one was medium containing NAA with four levels of concentration, these are 0 ppm, 0,4 ppm, 0,8 ppm, and 1,2 ppm. The data were analysed using analysis of variance (ANOVA) and tested for significancy using DMRT 5%. The result indicated that medium which containing TDZ 0,3 ppm and NAA 0,4 ppm have the best effect for shoot multiplication in cavendish banana comparing to other treatment. Furhermore, medium that containing NAA 1,2 ppm have the best effect for root formation in cavendish banana comparing to other treatment.
STRATEGI PENUMBUHAN PENANGKAR BENIH PADI (Oryza sativa L.) BERSERTIFIKAT DI DESA MULYODADI KECAMATAN BAMBANGLIPURO KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA Sukadi, Sukadi; Wartapa, Agus; Asih, Pitri Ratna; Febriani, Dian Putri
Jurnal Ilmu-Ilmu Pertanian Vol. 27 No. 1 (2020): Juli
Publisher : Politeknik Pembangunan Pertanian Yogyakarta-Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55259/jiip.v27i1.76

Abstract

Kajian ini bertujuan untuk mengetahui faktor internal dan eksternal yang dihadapi petani dalam menumbuhkan penangkar benih padi bersertifikat, serta merumuskan alternatif strategi dan prioritas strategi yang dapat direkomendasikan untuk petani di Desa Mulyodadi. Kajian dilaksanakan pada bulan Februari-Juni 2020 di Desa Mulyodadi, Kecamatan Bambanglipuro, Kabupaten Bantul, Daerah Istimewa Yogyakarta. Metode yang digunakan dalam kajian ini yaitu metode kombinasi. Penentuan sampel petani dilakukan dengan proportional random sampling. Hasil dari kajian yaitu analisis faktor internal dan eksternal yang kemudian diidentifikasi dengan matriks IFE dan EFE. Data dari matriks IFE dan EFE digunakan untuk dasar penyusunan alternatif strategi dengan analisis matriks IE dan SWOT, sehingga didapatkan 8 alternatif strategi. Tahapan untuk menentukan prioritas strategi yang dapat direkomendasikan menggunakan analisis QSPM. Hasil dari prioritas strategi yaitu menumbuhkan penangkar benih padi bersertifikat secara berkelompok dengan melakukan penyuluhan SOP perbenihan. Selanjutnya dilakukan penyuluhan tentang penumbuhan penangkar benih padi bersertifikat secara berkelompok. Hasil penyuluhan menunjukkan bahwa aspek pengetahuan dan sikap mengalami peningkatan sebesar 45,5% dan 31,2%
Seed Coating Sebagai Pengganti Fungsi Polong pada Penyimpanan Benih Kacang Tanah Sari, Maryati; Widajati, Eny; Asih, Pitri Ratna
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 41 No. 3 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.872 KB) | DOI: 10.24831/jai.v41i3.8099

Abstract

ABSTRAKPenelitian ini bertujuan untuk mencari alternatif pengganti fungsi polong dalam melindungi viabilitas benih kacangtanah selama penyimpanan, sehingga dapat menekan volume dan bobot dalam penyimpanan dan distribusi. Penelitiandilakukan pada benih kacang tanah varietas Kelinci. Percobaan dilaksanakan dengan rancangan petak terbagi. Petakutama adalah periode simpan, yaitu 0, 4, 7, 10, 13, dan 16 minggu. Anak petak adalah perlakuan pelapisan benih, yangterdiri atas benih dalam polong, benih kupas tanpa coating, benih kupas dengan coating arabic gum, coating arabic gum+ 0.5 g benomil L, coating arabic gum + 100 ppm, 150 ppm, dan 200 ppm tepung kurkuma, coating arabic gum + asamaskorbat 150 ppm, 250 ppm, dan 350 ppm. Hasil penelitian menunjukkan perlakuan coating + 0.5 g benomil L-1  danperlakuan coating + 350 ppm asam askorbat mampu mempertahankan daya berkecambah dan indeks vigor terbaik selamapenyimpanan. Kedua perlakuan tersebut nyata memberikan nilai indeks vigor yang lebih baik (setelah disimpan selama 16minggu, masing-masing memiliki nilai indeks vigor 40.2% dan 45.8%) dibandingkan perlakuan benih kupas tanpa coating(32.9%) dan perlakuan penyimpanan benih dalam polong (28.2%).Kata kunci: Arachis hypogaea L., pelapisan benih, penyimpanan benih, viabilitas benih
Isolasi Rhizobakteri dan Pengaruh Aplikasinya dengan Pupuk N-P terhadap Mutu Benih dan Pertumbuhan Bibit Tetua Betina Jagung Asih, Pitri Ratna; Surahman, Memen; Giyanto, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 3 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.512 KB) | DOI: 10.24831/jai.v45i3.13138

Abstract

Increased productivity of maize can be done with the use of high quality seeds from improved varieties such as hybrid seed. The objectives of this study were Increasing productivity of maize female parent is important in order to reduce the price of hybrid seed. The objectives of this study were to determine the nitrogen fixing bacteria compatible with phosphate solubilizing bacteria (PSB), and using those bacteria to increase physiological seed quality and seedling growth of maize female parent. The research consisted of laboratory and field experiments. Laboratory experiment for the isolation and identification of rhizobacteria resulted in 25 Azotobacter and 29 Actinomycetes non-pathogenic isolates capable of fixing nitrogen and PSB selected for compatibility tests were AB3, B28, P12, P14, P24, and P31. The compatibility test showed 25 pairs of BPF with Azotobacter and 16 pairs of BPF with Actinomycetes were mutually compatible. The BPF pair with Azotobacter or Actinomycetes P24-AzL7, P24-AzL9, B28-AcCKB4, P24-AcCKB9, P24-AcCKB20, and P24-AcCKW5 were able to increase the vigor index of hybrid maize female parent seed. Field experiment was arranged in a split plot design with three replications. The main plot was dosage of N-P fertilizer (0%, 25%, 50%, 75%, and 100% of recommendation dosage), and the subplot was 12 rhizobacteria treatments selected from 25 compatible pairs of BPF with Azotobacter and 16 pairs of BPF with Actinomycetes and 1 control. The application of compatible pairs of bacteria had a significant effect on plant height, the number of leaves at 3 and 4 weeks after planting and plant dry weight. However, the best treatment i.e. B28-AcCKB4 was not significantly different with the nutrient broth treatment (as control).
Co-Authors Agus Wartapa, Agus Asih Farmia Eny Widajati Febriani, Dian Putri Giyanto, dan Maryati Sari Memen Surahman Sukadi Sukadi Wisesa , Cindekia Purba