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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura Indonesia (JHI) Journal of Tropical Soils AGRIVITA, Journal of Agricultural Science JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Agrotek Tropika Jurnal Agrotropika Journal of Industrial System Engineering and Management Jurnal Pengabdian Fakultas Pertanian Universitas Lampung
Agus Karyanto
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Transportation

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PENGARUH PENGGUNAAN PACLOBUTRAZOL, KNO3 DAN ETEFON PADA PEMACUAN PEMBUNGAAN TANAMAN MANGGIS (Garcinia mangostana L.) Syafitri, Novalia; Karyanto, Agus; Rugayah, Rugayah; Widagdo, Setyo
JURNAL AGROTROPIKA Vol 19, No 2 (2020): JURNAL AGROTROPIKA VOL.19 NO. 2, Oktober 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v19i2.4545

Abstract

Mangosteen (Garcinia mangostana L.) is a tropical plant that bears seasonal fruit and is one of Indonesia's leading export commodity.  Mangosteen production in Indonesia is still low and not continuous, because there are several factors that influence it.  One of them is the character of biennial bearing in mangosteen one year produce high fruit load followed by a next year of very low production.  Therefore it is necessary to induce off season mangosteen flowering.  This study aims to determine: (1) the effect of Paklobutrazol on the flowering of mangosteen plants, (2) the effect of adding KNO3 and Etefon on the acceleration of mangosteen flowering.  This research was conducted in Mulangmaya Village, Kota Agung Timur District, Tanggamus, Lampung.  Regency at an altitude of 250 m above sea level from September 2018 to April 2019.  This research used a Randomized Block Design (RBD) with a single factor consisting of 3 treatments, namely P1 ( manure 10 kg/plant + NPK Nitrophonska 1 kg/plant, P2 (Paclobutrazol 2 ml/l + KNO3 20 g/l + manure 10 kg/plant + NPK Nitrophonska 1 kg/plant), and P3 (Paclobutrazol 2 ml/l + Etefon 40 ml/l + manure 10 kg/plant + NPK Nitrophonska 1 kg/plant).  The data obtained were analyzed by analysis of variance and the mean separation was carried out by orthogonal contrast test at the 5% significance level.  The results showed that the treatment of P2 (Paclobutrazol 2 ml/l + KNO3 20 g/l + manure 10 kg/plant + NPK Nitrophonska 1 kg/plant) on mangosteen plants was able to spur flowering faster with a difference of 12 days (8.70% ), and increased the total number of fruits per plant by a difference of 41 fruit (38.80%).  The P3 treatment (Paclobutrazol 2 ml/l + Etefon 40 ml/l + manure 10 kg/plant + NPK Nitrophonska 1 kg/plant), unexpectedly causing significant leaf drop 3 days after Ethephon spray, and new leaves were formed a month later.  Keywords : Ethephon, KNO3, Paclobutrazol, and mangosteen flowering
Pengaruh Pemberian Ekstrak Bawang Merah dan Kecambah dengan Pemberian Pupuk Cair Hayati terhadap Pertumbuhan Seedling Manggis (Garcinia mangostana L.) ., Rugayah; Karyanto, Agus; ., Ermawati; Suselawati, Dewi
JURNAL AGROTROPIKA Vol 20, No 2 (2021): Oktober 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v20i2.5373

Abstract

Mangosteen (Garcinia mangostana L) seeds from seed, or commonly called seedling, have relatively few lateral roots and are poor in root hairs so that their growth is slow (having a long juvenile period of up to 10-15 years). For this reason, it is necessary to make efforts so that mangosteen seedlings can have a good root system through the addition of natural growth regulators. The purpose of this study was to determine the effect of red onion extract, a mixture of onion extract and mung bean sprouts combined with biological liquid fertilizer on the growth of mangosteen seedling. This research was carried out in the Horticulture FP greenhouse in March 2020–July 2020. This study was arranged in a factorial (3 x 2) in a Randomized Block Design (RAK) with three replications. The first factor was natural ZPT treatment: without extract, red onion extract 400 g/L, and mixed extract of onion 200 g/L and green bean sprouts 200 g/L. The second factor is the provision of biological fertilizers, namely without biological fertilizers and 15 ml/L). The results showed that the administration of mixed extracts of shallots and mung bean sprouts tended to have better growth which could be seen from the highest average value for the variable plant height 6.04 cm, stem diameter 2.93 mm, and the number of secondary roots. The mixed extract treatment of shallots and mung bean sprouts also increased the widest leaf area by a difference of 3.5 cm² compared to the control. Keywords :  extract of shallot/ green bean sprout, growth regulator, mangosteen
Populasi dan Keanekaragaman Fungi Mikoriza Arbuskular pada Rizosfir Tanaman Lada Monokultur dan Polikultur Sari, Oktafia; Rini, Maria Viva; Evizal, Rusdi; Karyanto, Agus
JURNAL AGROTROPIKA Vol 23, No 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.8593

Abstract

Arbuscular mycorrhizal fungi (AMF) is a type of fungus that comes from the endomycorrhizal group, these fungi have the ability to form symbiosis with almost 90% of higher plant species. Population and diversity of AMF are influenced by biotic factors and abiotic factors. This research aims to determine the differences in population, diversity and dominant types of AMF in the rhizosphere of pepper planted in monoculture and pepper in polyculture. The soil samples were taking from monoculture and polyculture pepper plantations in Air Naningan District, Tanggamus Regency. The AMF population was tested using the One way Annova test. Culture trapping was done using a factorial treatment with the first factor being the origin of the soil sample (K) and the second actor being the type of host plant (T). Treatments design used was randomize design (CRD). The results showed that the AMF population in polyculture pepper plantation soil samples was higher than monoculture pepper, based on the Shannon-Wiener Diversity Index, AMF diversity in monoculture pepper and coffee intercropping pepper plantations was higher than in cocoa intercropping pepper plantations, and the type of AMF was dominant. from the results of trapping culture with monoculture pepper garden soil samples, namely spores of the species code S7, in samples of coffee intercropping pepper plantations the code S7 is dominant, while in cocoa intercropping pepper plantations it is dominated by code S6. Keywords: Arbuscular mycorrhizal fungi, diversity, population.
Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.) Azizah, Nur; Widyastuti, R. A. Diana; Karyanto, Agus; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol 22, No 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7697

Abstract

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia.  Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing.  The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)
Pengaruh Metode Aplikasi dan Konsentrasi Gibberellic Acid (GA3) terhadap Fase Pertumbuhan Vegetatif Tanaman Nanas (Ananas comosus [L.] Merr) Maraaini, Ajeng; Widyastuti, R. A. Diana; Warganegara, Hayane Adeline; Karyanto, Agus
JURNAL AGROTROPIKA Vol 23, No 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.7698

Abstract

Increasing the production of pineapple fruit can be done by manipulating the plant using Gibberellic Acid Growth Regulatory Substance (ZPT).  The purpose of this study was to determine the effect of GA3 concentration and application method, as well as its interaction in increasing the vegetative growth of pineapple plants.  Data collection was carried out in November 2022- February 2023 at a pineapple plantation company in Central Lampung. Treatments were arranged factorial (3x2) using a randomized block design with 3 replications. The first factor was Gibberellin (A) which consisted of three levels, (A1) 0 ppm GA3, (A2) 200 ppm GA3, and (A3) 400 ppm GA3.  The second factor is the application method (B) which consists of 2 levels, namely (B1) Application on the top of the leaf (B2) Application on the bottom of the leaf. The observed variables included plant height, stem diameter, number of leaves, D-leaf length, D-leaf width, number of roots, root length, fresh weight of roots, fresh weight of plants. Homogeneity of variance between treatments was tested by Barlett's test and additivity using Tukey's test and then analysis of variance was carried out.  Separation of the mean was carried out using the least significant difference test (LSD) at the 5% level. The results showed that 400 ppm GA3 was better than the control in affecting plant fresh weight with a difference of 630,7 g, the treatment of the application method on the leaves was better than the bottom leaf in affecting plant fresh weight with a difference 201,4 g. Treatment with a concentration of 40 ppm using the leaf application method was better than the control treatment. It is suggested to do further research related to the effect of giving GA3 on the generative phase of pineapple plants.Keywords : Gibberellic Acid, application method, pinneaple
PENGARUH PEMBERIAN PAKLOBUTRAZOL PADA PERTUMBUHAN DAN PEMBUNGAAN SPATIFILUM (Spathiphyllum wallisii) PERIODE KEDUA Sapitri, Desi; Rugayah, Rugayah; Karyanto, Agus; Ardian, Ardian
Jurnal Agrotek Tropika Vol 11, No 4 (2023): JURNAL AGROTEK TROPIKA VOL 11, November 2023
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v11i4.8007

Abstract

Tanaman Spathiphyllum populer untuk digunakan sebagai dekorasi dalam ruang yang tampilannya akan menarik apabila setiap anakan memiliki bunga dan tumbuh serempak. Salah satu cara untuk membuat penampilan tanaman Spathiphyllum memiliki bunga yang serempak adalah penggunaan zat pengatur tumbuh paklobutrazol. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian paklobutrazol terhadap pertumbuhan dan pembungaan Spathiphyllum periode kedua serta mengetahui konsentrasi paklobutrazol yang terbaik dalam mempengaruhi pertumbuhan dan pembungaan Spathiphyllum periode kedua. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan tunggal 6 taraf konsentrasi paklobutrazol yaitu 0 ppm, 100 ppm, 200 ppm, 300 ppm, 400 ppm, dan 500 ppm dengan 3 kali ulangan. Homogenitas ragam diuji dengan uji Barlett dan aditivitas diuji dengan uji Tukey, lalu diujkan F-htung. Selanjutnya, diuji dengan uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian paklobutrazol pada fase vegetatif efektif dalam menekan laju pertumbuhan tinggi tanaman, waktu muncul kuncup daun, jumlah daun, jumlah anakan, dan lebar tajuk. Pada fase generatif, paklobutrazol mampu meningkatkan jumlah bunga, namun masa mekar bunga cenderung sama. Konsentrasi paklobutrazol yang terbaik untuk tanaman Spathiphyllum belum ditemukan pada kisaran 0-500 ppm karena polanya masih linier. Namun berdasarkan hasil kuisioner pada tanaman Spathiphyllum yang menunjukkan penampilan yang terbaik terlihat pada pemberian paklobutrazol konsentrasi 400 ppm
PENGARUH BERBAGAI JENIS AUKSIN DENGAN BEBERAPA KONSENTRASI TERHADAP PENGAKARAN SETEK MELADA (Piper colubrinum) Hanum, Farida; Yusnita, Yusnita; Hapsoro, Dwi; Agustiansyah, Agustiansyah; Karyanto, Agus
Jurnal Agrotek Tropika Vol 10, No 1 (2022): JURNAL AGROTEK TROPIKA VOL 10, JANUARI 2022
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v10i1.5253

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh berbagai jenis auksin terhadap beberapa konsentrasi terhadap pengakaran Piper colubrinum. Percobaan dilaksanakan di Rumah Kaca  Fakultas Pertanian Universitas Lampung dari bulan Mei 2018 sampai Desember 2018. Percobaan menggunakan rancangan acak lengkap dengan 3 ulangan. perlakuan yang mengaplikasikan: kontrol, IBA 1500 ppm, IBA 2000 ppm, NAA 2000 ppm, NAA 750 ppm + IBA 750 ppm, NAA 1000 ppm + IBA 1000 ppm. Hasil penelitian menunjukkan bahwa pada variabel jumlah akar primer di buku pada perlakuan NAA 750 ppm + IBA 750 ppm nilai rata-rata meningkat yaitu 21 helai dibandingkan kontrol 2,5 helai. Pada perlakuan NAA 750 ppm + IBA 750 ppm berpengaruh pada peningkatan  jumlah akar primer di penampang batang yaitu 14 dibandingkan dengan kontrol 11 helai. Demikian perlakuan NAA 750 ppm + IBA 750 ppm berpengaruh pada peningkatan  jumlah akar primer yaitu 34,3 helai dibandingkan dengan kontrol 13,5 helai. Untuk variabel bobot basah akar nilai rata-rata NAA 750 ppm + IBA 750 ppm yaitu 11,8 g, nilai rata-rata ini lebih tinggi dibandingkan semua perlakuan.
PEMBUNGAAN TANAMAN SPATIFILUM (Spathiphyllum wallisii Regel) AKIBAT PENGARUH RESIDU PEMBERIAN BENZILADENIN (BA) PADA PERIODE KEDUA Rugayah, Rugayah; Warganegara, Hayane Adeline; Karyanto, Agus; Ardanti, Ade Novia
JURNAL AGROTROPIKA Vol 24, No 1 (2025): Jurnal Agrotropika Vol 24 No 1, Mei 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i1.9675

Abstract

Spatifilum is classified as a shade plant that can survive in environments with minimal sunlight or shading Spatifilum plants are known to absorb toxins or clean indoor air from pollutants such as benzene and formaldehyde. Efforts to stimulate flowering and the emergence of spatifilum seedlings include using a growth regulator in the form of benzyladenine (BA). The aim of this research was to determine the difference in the effect of residual BA with and without BA on the flowering of spatifilum plants in the second period. Data collection was carried out in August – November 2022 at the Horticulture Greenhouse, Faculty of Agriculture, University of Lampung. This research used a Complete Randomized Block Design (RAKL) with a single treatment. The treatment consisted of 5 BA concentration treatments, namely 0 ppm, 20 ppm two applications, 20 ppm four applications, 40 ppm two applications, and 40 ppm four applications with four repetitions. The data from this research were analyzed using the barlet test and the additivity test was carried out using the Tukey test. Then the data was analyzed using variance (Anara) and orthogonal contrast tests. The results of the research showed that there were significant differences in the variables of increasing the number of seedlings and increasing the number of flowers. BA concentration of 20 ppm was significantly able to increase the number of offspring compared to a concentration of 40 ppm, meanwhile, a concentration of 40 ppm with a frequency of giving 2x significantly increased the number of flowers compared to a frequency of giving 4x
In Vitro Growth and Development of Progenies Derived from Crossings of Several Dendrobium Accessions Under Different Media Maulida, Desi; Yusnita, Yusnita; Hapsoro, Dwi; Agustiansyah, Agustiansyah; Karyanto, Agus; Hamiranti, Rahmadyah; Nugroho, Rizki Bagus
AGRIVITA Journal of Agricultural Science Vol 47, No 2 (2025)
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.v47i2.4505

Abstract

The objective of plant hybridization is to generate alternative superior phenotypes with the aim of decreasing the dependence on wild orchid exploitation in nature. Although interspecies crosses in Dendrobium are very likely to occur and there is a low chance of experiencing bud depression, interspecies crosses have the potential to encounter several problems, including failure of embryo development resulted to the seeds unable to germinate. Media formulation is the most essential component in the success of in vitro culture of orchid seeds. Therefore, this study aimed to obtain new Dendrobium hybrids and the best media formulation for germination and seedling growth. A total of three experiments were conducted including hybridization, the impacts of basic media namely (1) MS, (2) VW, and (3) foliar fertilizer both with and without the addition of tryptone, on seedling germination. The results showed that there was no compatibility barriers observed in all crosses. Foliar fertilizer + tryptone media was recommended for orchid seedlings because it produced better growth and roots up to 8 months after planting (MAP). For best results on Dendrobium hybrid seedlings, MS + tryptone media up to 6 MAP was used followed by deflasking into VW + tryptone to stimulate optimal root growth before hardening.
Percontohan Penerapan Teknologi Bujangseta pada Pertanaman Jeruk di Pekon Giham Sukamaju, Kecamatan Sekincau Lampung Barat Rugayah, Rugayah; Karyanto, Agus; Sembodo, Dad; Warganegara, Hayane Adeline
Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 4, No 1 (2025): Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 4 No 1, Maret 2025
Publisher : Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpfp.v4i1.10788

Abstract

Pekon Giham Sukamaju termasuk dalam wilayah dataran tinggi di Kecamatan Sekincau Lampung Barat yang cocok untuk usaha pertanian, khususnya tanaman hortikultura. Beberapa petani di Pekon Giham, Sukamaju mulai tertarik  menanam  jeruk  sebagai  komoditas  unggulan baru, tetapi pemahaman dalam budidaya jeruk masih minim dan belum sesuai dengan kaidah GAP (good agricultural practices) untuk dapat menghasilkan panenan yang sehat, bermutu tinggi, dan berdaya saing sehingga mampu meningkatkan  pendapatan  petani.  Pengamatan di lapang menunjukkan  bahwa petani menanam jeruk seadanya terutama dalam pemeliharaan tanaman jeruk meliputi pemupukan dan pemangkasan. Tujuan kegiatan ini adalah (1) memberikan pengetahuan teoritis tentang teknik budidaya jeruk di dataran tinggi menurut kaidah GAP, (2) agar petani mengetahui dan mampu menerapkan teknologi bujangseta pada pertanaman jeruk. Hasil kegiatan menunjukkan bahwa terjadi peningkatan pengetahuan pemeliharaan jeruk dengan penerapan teknologi bujangseta sebesar 43,3%, terutama dalam hal pemangkasan dan pemupukan. Pemahaman dalam praktik penerapan teknologi bujangseta hanya terlihat pada lima orang peserta dari 13 anggota petani jeruk. Ketrampilan teknis budidaya jeruk yang dikuasai terutama pemupukan dan sebagian pemangkasan. Manajemen pengendalian OPT kurang dipaham petani.
Co-Authors , Agustiansyah Afriliyanti, Rizki Ahistasari, Asih Ainin Niswati, Ainin Ardanti, Ade Novia Ardian Ardian Arlina Theresa Manurung Aulia, Fathia Nur Bayu Lesmana, Bayu Berlintina, Duta Cahya Ginting, Yohannes Dermiyati, . Desi Maulida Desi Sapitri, Desi Dwi Asmono DWI HAPSORO Eko Pramono Ermawati . Farida Hanum Fauzan, Naufal Dani Fembriarti Erry Prasmatiwi Ginting, Yohannes Cahya Hamiranti, Rahmadyah Harini, Nyang Vania Ayuningtyas Hayane Adeline Warganegara, Hayane Adeline Kukuh Setiawan Kuswanta Futas Hidayat Lukmi, Farida Lumban Raja, Jamalam Maraaini, Ajeng Maria Viva Rini Masniar Masniar, Masniar Mohammad Arief Nur Wahyudien Muhammad Kamal Nugroho, Rizki Bagus Nur Azizah Olivia Cindowarni Pratiwi, Bela Ayu Prayogi, Adi Noor Purnomo Purnomo Raden Ajeng Diana Widyastuti Rafika, Eni Ramadiana, Sri Rosma Hasibuan, Rosma Rugayah Rugayah Rugayah Rusdi Evizal Sadiyah, Nyimas Sandi Asmara Sari, Oktafia Sembodo, Dad Setiya Wati, Tri Agus Setyo Widagdo Solikhin Solikhin Sri Yusnaini Sugeng Triyono Sugiatno Sugiatno Suherni, Desi Suselawati, Dewi Suskandini Ratih Suskandini Ratih Dirmawati Syafitri, Novalia Tajuddin, Tamrin Tumiar Katarina Manik Utomo, Muhajir Widyastuti, R. A. Diana YUSNITA YUSNITA