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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Pertanian Agros Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Agroista: Jurnal Agroteknologi

Yohana Theresia Maria Astuti

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Author-ID : 435188

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Health Professions Medicine & Pharmacology Public Health

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PERTUMBUHAN Mucuna bracteata PADA BERBAGAI KOMPOSISI MEDIA TANAM DAN VOLUME PENYIRAMAN Titin Setyorini; Mangihut Tua Raja; Yohana Theresia Maria Astuti
AGROISTA : Jurnal Agroteknologi Vol. 1 No. 1 (2017): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Mucuna bracteata is a cover crop that is commonly used in oil palm plantations. It has many advantages, such as rapidly growing, preventing erosion on open land and suppressing weed growth. The research aims to determine the effect of various compositions planting medium with addition of organic and inorganic fertilizers and watering volume on the growth of Mucuna bracteata. The research was conducted in Kebun Pendidikan dan Penelitian (KP2) Institut Pertanian STIPER Yogyakarta, from April to July 2016. Completely Randomized Design (CRD) factorial consisting of two factors was applied as experimental design. The first factor was growing media consisting of four levels, namely P0 (regosol, without fertilizer), P1 (regosol + NPK), P2 (regosol + manure), P3 (regosol + compost). The second factor was watering volume consisting of three levels, namely V1 (200 ml/day), V2 (400 ml/day), and V3 (600 ml/day). Analysis of variance (ANOVA) and Duncan's Multiple Range Test (DMRT), both with significance level of 5%, were then used to find out whether significant differences among treatments, were existed. Regression was used if ANOVA showed no significant differences among treatment. The result showed that there was no interaction between treatment, growing media and watering volume on Mucuna bracteata’s growth. Regosol and manure was the best media to support plant growth Mucuna bracteata, while the watering volume was not. Keywords : Growth, Mucuna bracteata, growing medium, watering volume

INCREASING LATEX PRODUCTION OF RUBBER TREE (Hevea brasiliensis) BY NUTRIENT INFUSION Candra Ginting; Yohana Theresia Maria Astuti
AGROISTA : Jurnal Agroteknologi Vol. 1 No. 2 (2017): NOVEMBER
Publisher : Program Studi Agroteknologi INSTIPER

Penelitian bertujuan untuk mengetahui pengaruh pemberian nutrisi secara infus pada batang karet terhadap produksi latex. Penelitian dilaksanakan di Perkebunan karet milik PTPN VIII di Garut, Tasikmalaya pada bulan April sampai Agustus 2015. Larutan nutrisi terdiri dari unsur ara makro dan mikro yaitu: N-NH2 + : 0,2 %, N-NO3 - : 2,3 %, P2O5 total: 1,0%, total K2O : 2,4%, total Ca : 0,08 %, total Mg : 0,07 %; total SO4 2- : 0,28 %.; total Fe :67,9 mg.kg-1 , total Cu : 28,9 mg.kg-1 , total Mn : 38,7 mg.kg-1 , total Zn : 16,4 mg.kg1 . Larutan nutrient diencerkan 100 x sebelum aplikasi, dengan nilai electrical conductivity 3,83 mS/cm dan pH 5,52. Larutan tersebut diaplikasikan dengan cara infus batang karet. Hasil yang diperoleh menunjukkan adanya peningkatan berat latex dan kadar karet kering. Tanaman karet yang telah mengalami kering sadap akibat penggunaan stimulan sebelumnya, setelah dilakuakan aplikasi infus nutrisi, dapat memproduksi latex kembali.

SISTEM PENANAMAN LEGUME COVER CROP PADA LAHAN REPLANTING PERKEBUNAN KELAPA SAWIT Yohana Theresia Maria Astuti; Tri Nugraha Budi Santosa; Andi
AGROISTA : Jurnal Agroteknologi Vol. 2 No. 1 (2018): MEI
Publisher : Program Studi Agroteknologi INSTIPER

The objectives of this study were to determine the effectiveness of LCC planting methods on replanting areal and to determine the best growth of LCC between lining, digging and broadcasting methods. This research was conducted in Ukui sub-district, Pelalawan district, Riau. This research was conducted by experimental method which was arranged in Randomized Complete Block Design (RCBD). The first factor is the method of planting which consists of lining system, digging system and broadcasting system. The second factor is land condition which consists of hilly area, flat area and low area. Each treatment combination with 3 replications. The data of the research were analyzed by analysis of variance at level of 5%. If there is a real difference, then tested by DMRT at 5% confidence level. The results showed that planting system gave the same effect to LCC growth. While the best condition of land for LCC growth is on flat area and low area than hilly area. Keywords : Lining, digging, broadcasting, hilly area, flat area, low area, LCC

RESPON PERTUMBUHAN DAN PRODUKSI KELAPA SAWIT PADA APLIKASI PUPUK PELEPAH Yohana Theresia Maria Astuti; Tri Nugraha Budi Santosa; Dimas Deworo Puruhito; Latif Wrestiawan; Eddy Sugiharto; Y. Sugiyanto
AGROISTA : Jurnal Agroteknologi Vol. 2 No. 2 (2018): NOVEMBER
Publisher : Program Studi Agroteknologi INSTIPER

The study objective was to determine the response of growth and production of oil palm on frond fertilizer application. The duration experiment, from June 2017 to April 2018 at the Educational and Experimental Garden of the Stiper Agriculture Institute, Stiper Edu Agro Tourism (SEAT), Ungaran, Central Java, Indonesia. This study used an experimental method with a completely randomized factorial design. The first factor was the age of plants consisting of 2 levels for 6 years old plants and 12 years old plants. The second factor was the dose of frond fertilizer application with 3 levels of application. As control (5 kg/plant/year NPK fertilizer), 2 kg/plant/year frond fertilizer, 4 kg/plant/year frond fertilizer. The experiment using 7 replications for each combination treatment. The result on vegetative growth of oil palm showing the same effect on control and frond fertilizer applications. However, significant increase of production shown in the frond fertilizer application. The total weight of fresh bunches based on harvest observations in January, February, March and April 2018, the highest at the age of 6 years old oil palm which was given 2.0 kg/plant/year frond fertilizer (63.2 kg FFB/4 months). Oil palm productivity with an application of 2.0 kg/plant/year frond fertilizer showing result of 18.96 tons of FFB/ha/year. Compared this to the productivity of control with gain of 6 tons of FFB/ha/year. The highest average weight of fresh bunch in oil palm age 12 years in 4.0 kg frond fertilizer application, with average weight of fresh bunch was 14 kg. Keywords: oil palm, frond fertilizer, vegetative growth, productivity

PERTUMBUHAN BIBIT KELAPA SAWIT PRE NURSERY DENGAN MODIFIKASI NUTRISI DAN BERBAGAI MACAM MEDIA TUMBUH PADA SISTEM HIDROPONIK Yohana Theresia Maria Astuti; Retni Mardu Hartati; Tejo Triwaluyo
AGROISTA : Jurnal Agroteknologi Vol. 3 No. 1 (2019): MEI
Publisher : Program Studi Agroteknologi INSTIPER

The aimed of this study was to determine the growth of oil palm seedlings at pre nursery in the nutrition modification and various types of media on hydroponic systems. The research was conducted at the education and research garden of the Stiper Agricultural Institute Yogyakarta, Maguwoharjo Village, Depok District, Sleman Regency, Yogyakarta Special Region in March to June 2016. The study used a split plot design. Main plot is a modification of nutrition consisting of three levels, namely nutrition A (15 g gandasil, 15 g hyponex, 0.78 g ZA, 7.5 g dolomite), nutrition B (15 g gandasil, 15 g hyponex, 1.17 g ZA, 11.25 g dolomite), and nutrition C (15 g gandasil, 15 g hyponex, 1.56 g ZA, 15 g dolomite). While the sub plot is a planting medium consisting of three types, namely rockwool, husk charcoal, and cocopeat. Observation data were analyzed by variance. To find out the significan difference between treatments is done by Duncan Multiple Range Test (DMRT) at a 5% significan level. The results of the analysis showed that nutrient modification had an effect on the number of leaves and leaf area, nutrients B and C were better than nutrition A, however, nutrition A, nutrition B, and nutrition C had the same effect on the growth of pre-nursery of oil palm with hydroponic systems. Various types of planting media influence the growth of pre-nursery oil palm seedlings, best on rockwool media. Keyword : oil palm, hydroponic, nutrition modification, planting media.

ANALISIS FAKTOR FAKTOR YANG MEMPENGARUHI PRODUKTIVITAS TANAMAN CENGKEH DI BEBERAPA KECAMATAN DI KABUPATEN TRENGGALEK Duta Mangku; Erick Firmansyah; Yohana Theresia Maria Astuti
AGROISTA : Jurnal Agroteknologi Vol. 4 No. 1 (2020): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Penelitian yang bertujuan untuk mengetahui faktor biotik, faktor abiotik dan faktor managemen yang mempengaruhi produktivitas tanaman cengkeh serta untuk mengetahui pengaruh masing-masing faktor biotik, faktor abiotik dan faktor managemen terhadap produktivitas tanaman cengkeh, telah dilaksanakan pada bulan Desember 2019 di 3 kecamatan, yaitu Kecamatan Munjungan, Kecamatan Panggul dan Kecamatan Pule. Kabupaten Trenggalek Provinsi Jawa Timur. Penelitian ini merupakan kegiatan survey berdasarkan judul yang akan di teliti. Pengamatan dilakukan untuk memperoleh data primer dan sekunder. Data primer diperoleh dari wawancara dengan petani dengan menggunakan quisioner. Data sekunder adalah data yang sudah tercatat pada dinas terkait berupa data-data produksi dan data pendukung lain seperti, data curah hujan dan iklim 5 tahun terakir, data produksi cengkeh selama 5 tahun terakir, luas areal tanam cengkeh 5 tahun terakir, peta wilayah, monografi desa dan kecamatan. Analisis yang digunakan dalam penelitian ini adalah dengan menggunakan analisis regresi linier berganda yang di formulasikan sebagai berikut, Yi = β0 + β1X1 + β2X2 + E, Dimana: Y = Produktifitas Cengkeh, X1 = Luas Lahan (Ha), X2 = Curah hujan, E = error. Hasil penelitian Produktivitas tanaman cengkeh dipengaruhi faktor biotik berupa hama penyakit tanaman, dan faktor abiotik berupa luas lahan. Factor biotik berupa hama penyakit tanaman secara langsung menyerang tanaman hingga tanaman mati, sedangkan faktor abiotik berupa luas lahan menyebutkan semakin luas lahan maka semakin rendah produktivitas tanamam cengkeh atau sebaliknya. Kata kunci : produktivitas tanaman cengkeh, faktor biotik dan abiotik.

HUBUNGAN TINGKAT PENGETAHUAN TEKNIK BUDIDAYA PETANI PLASMA DENGAN PRODUKTIVITAS KELAPA SAWIT DI DESA LUBUK KEMBANG SARI KECAMATAN UKUI Azys Surya Setya; Herry Wirianata; Yohana Theresia Maria Astuti
AGROISTA : Jurnal Agroteknologi Vol. 4 No. 2 (2020): NOVEMBER
Publisher : Program Studi Agroteknologi INSTIPER

Penurunan produktivitas kelapa sawit dapat terjadi karena adanya kesalahan penerapan teknik budidaya yang dipicu kurangnya pengetahuan petani dalam teknis budidaya kelapa sawit. Pengetahuan bisa menjadi hal vital dalam mempengaruhi perilaku seseorang dalam menjaga mutu lingkungannya, termasuk petani sawit dalam menghadapi penurunan produktivitas. Karakteristik internal petani berkaitan dengan tingkat pengetahuan petani. Penelitian ini bertujuan untuk mengetahui hubungan tingkat pengetahuan teknik budidaya pada petani plasma dengan produktivitas kelapa sawit di Desa Lubuk Kembang Sari, Kecamatan Ukui. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan desain penelitian menggunakan pendekatan cross-sectional. Metode pengambilan data menggunakan teknik purposive sampling dengan jumlah responden sebanyak 86 orang. Instrumen yang digunakan dalam penelitian ini adalah kuesioner. Uji korelasi yang digunakan untuk mengetahui tingkat pengetahuan petani dengan produktivitas kelapa sawit adalah Spearman Rank Test. Hasil penelitian dengan uji Spearman Rank Test menunjukkan bahwa nilai p value 0,021 (p<0,005) yang artinya terdapat hubungan yang signifikan antara tingkat pengetahuan teknik budidaya petani plasma dengan produktivitas kelapa sawit di Desa Lubuk Kembang Sari, Ukui. Kesimpulannya terdapat hubungan yang bermakna antara tingkat pengetahuan teknik budidaya petani plasma dengan produktivitas kelapa sawit di Desa Lubuk Kembang Sari, Ukui. Kata Kunci : Pengetahuan Teknik Budidaya, Produktivitas Kelapa Sawit, Petani Plasma

Co-Authors Aji Setiawan Andi Andi . Azys Surya Setya Candra Ginting Dimas Deworo Puruhita Dimas Deworo Puruhito Duta Mangku Eddy Sugiharto Erick Firmansyah Fani Ardiani Githa Noviana Herry Wirianata Latif Wrestiawan Mangihut Tua Raja Neny Andayani Retni Mardu Hartati Swandari, Tantri Tejo Triwaluyo Titin Setyorini Tri Nugraha Budi Santosa Y Sugiyanto Y. Sugiyanto

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