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All Journal Jurnal Ilmu Pertanian Indonesia Vegetalika Biogenesis: Jurnal Ilmiah Biologi Jurnal Agrotek Lestari
Diah Rachmawati
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Pertumbuhan Tiga Kultivar Padi (Oryza sativa L.) Terhadap Aplikasi Pupuk Bio Cair dan Kondisi Tanah Pertanian Pasca Erupsi Merapi 2010 Umi Siswanti, Dwi; Rachmawati, Diah
Biogenesis Vol 1, No 2 (2013)
Publisher : Jurusan Biologi UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The eruption of Mount Merapi at the end of 2010, which resulted in the destruction of land and crops are changing wetland into dry land. Sleman which is located south of Mount Merapi became one of the areas that most affected by the eruption of Merapi in 2010. It is necessary to improve the processing of soil physical properties of degraded areas and efforts to restore agricultural soil nutrient. Returning soil nutrients can be cultivated with the addition of organic material or the addition of microbes. The research aims to analyze the growth of three cultivars of rice (Oryza sativa L.) againstthe application of biofertilizer in paddy fields were affected by the eruption of Merapi in 2010. These three rice cultivars are Situbagendit, Inpari 20 and Ciherang. This research was conducted by applying the biofertilizer as much as 10 liters / ha were given three times during the vegetative phase, ie: 7, 21and 35 days after planting. The results of this research indicate that the three rice varieties ie: Situbagendit, Ciherang and Inpari 20 have an optimal growth and an increase in soil nutient content in biofertilizer application.Keywords: biofertilizer, degraded land, Merapi eruption, rice
Pengaruh Asam Humat terhadap Produktivitas dan Serapan Nitrogen pada Tanaman Kangkung Darat (Ipomoea reptans Poir.) Deris Trian Rahmandhias; Diah Rachmawati
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 2 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.791 KB) | DOI: 10.18343/jipi.25.2.318

Abstract

An uncertain climate and infertile soils are factors that cause fluctuations in crop yields. In addition, improper application of fertilizers causes kangkong plants to not absorb nutrients optimally. The application of humic acid as a biostimulant can be used to improve soil structure and optimize the productivity of kangkong through the absorption of nutrients from fertilizers or elements around plants. This study aims to study the effect of application of humic acid on growth, productivity, and nitrogen uptake in kangkong (Ipomoea reptans). This research was carried out with completely randomized design (CRD) with a single factor including 7 treatments, namely control, application of humic acid through leaves at a dose of 5 mg.L-1, 20 mg.L-1, and mg.L-1 and through roots a dose of 5 mg.L-1, 20 mg.L-1, and 35 mg.L-1. Planting media used without the addition of basic fertilizers to see the most effective effect of the application of humic acid. The results showed that application of humic acid dose of 20 mg / L through leaves and roots caused an increase in plant height, stem diameter, number of leaves, biomass and nitrogen uptake of kangkong. The highest chlorophyll level of kangkong plants was produced in the treatment of humic acid dose of 35 mg.L-1 through leaves. Based on the research it can be concluded that the application of humic acid through leaves and roots increase growth, productivity and nitrogen uptake in kangkong. Keywords: humic acid, Ipomoea reptans, nitrogen, productivity
Pertumbuhan Tiga Kultivar Padi (Oryza sativa L.) Terhadap Aplikasi Pupuk Bio Cair dan Kondisi Tanah Pertanian Pasca Erupsi Merapi 2010 Dwi Umi Siswanti; Diah Rachmawati
Biogenesis: Jurnal Ilmiah Biologi Vol 1 No 2 (2013)
Publisher : Department of Biology, Faculty of Sci and Tech, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/bio.v1i2.456

Abstract

The eruption of Mount Merapi at the end of 2010, which resulted in the destruction of land and crops are changing wetland into dry land. Sleman which is located south of Mount Merapi became one of the areas that most affected by the eruption of Merapi in 2010. It is necessary to improve the processing of soil physical properties of degraded areas and efforts to restore agricultural soil nutrient. Returning soil nutrients can be cultivated with the addition of organic material or the addition of microbes. The research aims to analyze the growth of three cultivars of rice (Oryza sativa L.) againstthe application of biofertilizer in paddy fields were affected by the eruption of Merapi in 2010. These three rice cultivars are Situbagendit, Inpari 20 and Ciherang. This research was conducted by applying the biofertilizer as much as 10 liters / ha were given three times during the vegetative phase, ie: 7, 21and 35 days after planting. The results of this research indicate that the three rice varieties ie: Situbagendit, Ciherang and Inpari 20 have an optimal growth and an increase in soil nutient content in biofertilizer application.Keywords: biofertilizer, degraded land, Merapi eruption, rice
PENGARUH KETERSEDIAAN AIR BERBEDA TERHADAP PERTUMBUHAN DAN HASIL TIGA KULTIVAR BAWANG MERAH (Allium cepa L.) Nana Ariska; Diah Rachmawati
Jurnal Agrotek Lestari Vol 3, No 2 (2017): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (89.039 KB) | DOI: 10.35308/jal.v3i2.609

Abstract

The availability of water is an important factor that greatly affects the growth and yield at the onions. The objective of this research was to study the growth content of three cultivars of onions (Allium cepa L.) on different water availability condition. This research was conducted in the Sawit Sari Greenhouse, Laboratory of Plant Physiology Faculty of Biology and the Laboratory of Chemistry, Faculty of MIPA, University Gadjah Mada in September-December 2015. The design used in this experiment was a Complete Random Design (CRD) with two factors, cultivar and frequency of watering. The cultivars used were Biru Lancor (V1), Crok Kuning (V2), Tiron (V3) using differences watering frequency: 2 times daily watering (P1), once a day watering (P2), once a watering in 2 days (P3), once a watering in 3 days (P4). Each treatment combination was done with 5 replication. Water treatment was done in second week until eight week after planting. The observed parameters included leaves length, number and fresh weight of the leaves, the length and weight of roots, fresh weight and dry weight of tubers which measured by digital scales and tape measure. Data were analyzed using Analysis of Variant (ANOVA). The results showed the differences in frequency of watering influences the growth, and yield content of three cultivars of onions. Leaves length, fresh weight, and number of leaves decreased with the reduction of the frequency of watering. Root length and fresh weight of root, fresh and dry weight of tuber increased with the reduction of the watering frequency. Keywords: Onion (Allium cepa L.), drought,
Respons Pertumbuhan dan Kadar Kapsaisin Tanaman Cabai Merah (Capsicum annuum L.) terhadap Kekeringan dan Pemberian Mikoriza Arbuskular Diah Rachmawati; Dewi Utari; Diah Rachmawati
Vegetalika Vol 11, No 1 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.66916

Abstract

Kondisi iklim dan unsur hara sangat berpengaruh pada produksi cabai merah (Capsicum annuum L.). Ketersediaan unsur hara dipengaruhi oleh beberapa faktor salah satunya yaitu mikoriza. Mikoriza membantu tanaman dalam penyerapan air dan unsur hara. Penelitian ini bertujuan untuk mempelajari respons pertumbuhan tanaman cabai merah (Capsicum annuum L.) dan kadar kapsaisin buah cabai terhadap interval penyiraman dan pemberian mikoriza. Penelitian Ini menggunakan metode eksperimental dengan rancangan acak lengkap (RAL) yang terdiri atas dua faktor yaitu interval penyiraman dan pemberian mikoriza. Perlakuan interval penyiraman terdiri atas 2 kelompok yaitu penyiraman setiap hari dan tiga hari sekali. sedangkan perlakuan pemberian mikoriza terdiri atas 3 kelompok yaitu tanpa pemberian mikoriza, mikoriza 10 g/tanaman dan 15 g/tanaman. Parameter yang diamati yaitu tinggi tanaman, jumlah daun, kadar klorofil, jumlah buah, berat buah dan kadar kapsaisin buah cabai. Data yang diperoleh kemudian dianalisis menggunakan analisis variansi dan pengujian lanjut DMRT dengan α = 0,05. Hasil yang diperoleh yaitu kombinasi perlakuan mikoriza+interval penyiraman berpengaruh nyata terhadap jumlah daun, kadar klorofil, jumlah buah, berat buah dan kadar kapsaisin buah. Pemberian mikoriza meningkatkan kadar kapsaisin baik pada interval penyiraman setiap hari maupun tiga hari sekali. Interval penyiraman setiap hari menunjukkan berat buah lebih tinggi daripada interval penyiraman 3 hari sekali, namun kadar kapsaisin yang lebih rendah.  Berdasarkan hasil penelitian yang telah dilakukan  dapat disimpulkan bahwa perlakuan pemberian mikoriza 15g+interval penyiraman setiap hari menunjukkan hasil tertinggi pada jumlah daun, tinggi tanaman, jumlah buah, berat buah, serta kadar klorofil daun.
Pengaruh Pemberian Kalsium Silikat terhadap Pertumbuhan dan Struktur Anatomi Akar Tanaman Padi (Oryza sativa L. ‘IR64’) pada Kondisi Cekaman Salinitas Diah Rachmawati; Aliya Nadira Irsyad; Diah Rachmawati
Vegetalika Vol 11, No 2 (2022): In Publish
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.66507

Abstract

Salinitas merupakan salah satu cekaman abiotik yang umum terjadi di lahan persawahan. Salinitas dapat menyebabkan produktivitas padi menurun akibat terhambatnya pertumbuhan tanaman padi. Salah satu cara untuk mengurangi dampak negatif cekaman salinitas yaitu dengan aplikasi pupuk silikat.  Pupuk silikat sebagai sumber silikon (Si) dapat meningkatkan pertumbuhan serta toleransi tanaman padi saat berada pada kondisi cekaman biotik maupun abiotic, salah satunya salinitas. Tujuan penelitian ini adalah untuk mempelajari pengaruh kalsium silikat terhadap pertumbuhan, dan struktur anatomi akar tanaman padi ‘IR64’ pada kondisi cekaman salinitas. Penelitian dilakukan menggunakan Rancangan Acak Lengkap dengan dua faktor yaitu kalsium silikat dan salinitas. Konsentrasi yang digunakan pada perlakuan kalsium silikat 0, 1, dan 2 mM serta untuk perlakuan salinitas 0, 37.5, dan 50 mM NaCl. Data yang diperoleh dianalisis dengan menggunakan analisis varian (ANOVA) dan jika terdapat pengaruh maka dilanjutkan dengan menggunakan uji DMRT dengan tingkat kepercayaan 95%. Hasil penelitian menunjukkan bahwa aplikasi kalsium silikat meningkatkan pertumbuhan tanaman padi ‘IR64’ pada kondisi cekaman salinitas. Pada kondisi cekaman salinitas, aplikasi kalsium silikat mampu meningkatkan diameter akar, tebal eksodermis, tebal korteks, dan diameter stele tanaman padi ‘IR64’. 
Co-Authors Aliya Nadira Irsyad Ariska, Nana Deris Trian Rahmandhias Dewi Utari Diah Rachmawati Diah Rachmawati Dwi Umi Siswanti