Article Per Year (5 Year)
p-Index From 2021 - 2026
4.175
P-Index
This Author published in this journals
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
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Transportation

Published : 33 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 33 Documents
Search

 1   2   3   4 
Activity of Soil Microorganisms During the Growth of Sweet Corn (Zea Mays Saccharata Sturt) in the Second Planting Time with the Application of Fertilizers and Biochar Dermiyati, .; Karyanto, Agus; Niswati, Ainin; Lumban Raja, Jamalam; Triyono, Sugeng; Harini, Nyang Vania Ayuningtyas
JOURNAL OF TROPICAL SOILS Vol. 22 No. 1: January 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i1.37-45

Abstract

Efforts to increase the production of sweet corn can be done with the application of fertilizers, either inorganic, organic orits combination. In addition, the application of soil amendments such as biochar is also expected to improve soil fertility that will indirectly increase the production of sweet corn.Organonitrophos fertilizer is an organic fertilizer developed by lecturers of Faculty of Agriculture, University of Lampung. The research was aimed to study effect the combination of organonitrophos, and inorganic fertilizers, biochar and the interaction between fertilizer combination and biochar on soil respiration and soil microbial biomass.The research was conducted in the Integrated Field Laboratory of Lampung University using 6x2 factorial in a Randomized Block Design with 3 replications. The first factor was six levels combination of organonitrophos and inorganic fertilizers (P0, P1, P2, P3, P4, and P5). The second factor was two levels of biochar dosage (B0 and B1). Data was analyzed by Analysis of Variance and followed by the Least Significant Difference (LSD)Test at 5% level. The observed variables were soil microorganism activity likely soil respiration and soil microbial biomass. The results showed that P3B1treatment (300 kg Urea ha-1, 125 kg SP-36 ha-1, 100 kg KCl ha-1 + 2500 kg organoitrophos ha-1) was the highest soil respiration at of 60 days after planting (DAP). P5 treatment (5000 kg Organonitrophos ha-1) has the highest soil microbial biomasscompared to other treatments at 60 and 90 DAP. B1 treatment (5000 kg biochar ha-1) has higher soil respiration and soil microbial biomasscompared to treatment (0 kg biochar ha-1. There was an interaction between combination of organonitrophos and inorganic fertilizers and biochar on soil respiration at 90 DAP. However, there was no interaction between fertilizer combination and biochar on soil microbial biomass.Keywords: Biochar, Fertilizer Combination, Organonitrophos, Soil Microbial Biomass Carbon and Soil Respiration
Effect of long-term Tillage and Nitrogen Fertilization Residue on Soil Biochemical Properties and Cowpea Yield Afriliyanti, Rizki; Yusnaini, Sri; Karyanto, Agus; Hapsoro, Dwi; Niswati, Ainin; Utomo, Muhajir
JOURNAL OF TROPICAL SOILS Vol. 26 No. 3: September 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i3.141-147

Abstract

Sustainable soil management practices must enhance or maintain soil quality and crop yields. The objective of this experiment was to study the effect of long-term (32 years) tillage system and nitrogen fertilization residue on soil biochemical properties and cowpea (Vigna unguiculata) yields. This research was conducted using four replications, a factorial experiment arranged in a randomized block design. The first factor was tillage systems consisting of intensive tillage (T1) and no-tillage (T2) and the second factor was nitrogen fertilization residue (N) consisting of N1 (0 kg N ha-1) and N2 (200 kg N ha-1). Data were analyzed using analysis of variance; if there was a significant difference will be continued with the Least Significant Difference (LSD) test at 5%. Principal Component Analysis (PCA) determined the relationship among observed variables. The results showed that no-tillage could give better results on soil respiration and soil bacteria and fungi population than intensive tillage. Lower soil pH was found at 200 kg N ha-1 fertilizer residue than control (without N fertilizer). The cowpea growth and yields were high at long-term N1T2 and N2T1 treatment. Principal component analysis showed an interrelationship among soil biochemical properties, growth, and yield of cowpea.
Insecticide application effect on ground dwelling arthropods in edamame crops Hasibuan, Rosma; Cindowarni, Olivia; Kamal, Muhammad; Purnomo, Purnomo; Karyanto, Agus
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.225262-274

Abstract

Ground-dwelling arthropods play many important roles in agroecosystems. This experiment was conducted to assess the effects of botanical and synthetic insecticides on soil arthropods in edamame crops. The study included six treatments: soursop leaf extract at concentrations of 1% and 2%, diflubenzuron at concentrations of 0.05% and 0.1%, a common synthetic insecticide (chlorantraniliprole 0.15%), and a control (untreated plants), each with three replications. Pitfall traps were used to sample soil arthropods. A total of 2222 soil arthropods were collected, consisting of 1443 (64.94%) predatory arthropods and 778 (35.06%) detritivorous arthropods. The dominant orders of predators and detritivores were Araneae (61.5%) and Coleoptera (40.2%), respectively. The highest numbers of predatory and detritivorous arthropods were found on edamame plants sprayed with soursop extract, while the lowest numbers were recorded on plants treated with the common synthetic insecticide chlorantraniliprole. These results indicate that chlorantraniliprole negatively impacts the presence of ground-dwelling arthropods in edamame agroecosystems. In contrast, the application of the botanical insecticide (soursop leaf extract) and the synthetic insect growth regulator (diflubenzuron) did not reduce the abundance or diversity of ground-dwelling arthropods in edamame fields.
APLIKASI CAMPURAN AUKSIN NAA DAN IBA PADA PERTUMBUHAN DAN HASIL UBIKAYU Setiya Wati, Tri Agus; Yusnita, Yusnita; Asmara, Sandi; Karyanto, Agus; Widyastuti, Raden Ajeng Diana
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.10801

Abstract

The growth and production of cassava can be increased through various efforts, including the use of superior varieties, fertilization, the addition of organic materials, and the application of growth regulators (PGR). Naphthaleneacetic acid (NAA) and indole-3-butyric acid (IBA) are PGRs that have been widely documented to stimulate root initiation and development in cuttings. The application of aauxin mixtures on cassava cuttings followed by fertilization and the addition of organic materials is expected to improve the growth and yield of cassava. The aim of this experiment is to study the effects of the application of an NAA and IBA mixture (1:1) and the type of fertilizer on the growth and yield of the Garuda variety of cassava. This research is designed using a clustered randomized block method with three replications. The design used is factorial 2x3, consisting of two main treatment factors. The first factor is the combination of growth regulators NAA and IBA in a 1:1 ratio at three concentration levels, namely 0 ppm, 500 ppm, and 1,000 ppm. The second factor includes the type of fertilizer used, which is a single inorganic fertilizer and a combination of inorganic fertilizer with cow manure. Each experimental unit in this study consists of 10 cassava cuttings planted in an orderly manner with a planting distance of 1 meter x 1 meter between plants. The results of the experiment showed that the application of inorganic fertilizer produced plant growth and the number of productive roots equivalent to the use of inorganic fertilizer + cow manure. The application of a mixture of auxins NAA and IBA (1:1) at concentrations of 500 ppm and 1,000 ppm significantly increased the growth of shoots, the number and weight of productive roots of the Garuda variety cassava, but both treatments resulted in cassava growth and yield that were not different. Key words: Cassava, cow manure, growth, IBA, NAA, yield
RESPON PERTUMBUHAN DAN HASIL PADI VARIETAS IR NUTRIZINC TERHADAP APLIKASI BIOCHAR DAN BENZILADENIN Rafika, Eni; Yusnita, Yusnita; Karyanto, Agus; Hapsoro, Dwi; Pramono, Eko
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.10895

Abstract

Rice growth and yield can be increased through various efforts, including the use of "high-yielding varieties, fertilization, soil conditioners with application of plant growth regulators (PGRs). Soil conditioners namely as biochar are carbon products that can enhance plant productivity through enhancing the physical, chemical, and biological characteristics of the soil, while cytokinine benzyladenine (BA) is a PGR that has been widely documented to stimulate cell growth, cell division, and differentiation in rice plants. The purpose of this study was to determine the effect of biochar and benzyladenine (BA) on the growth and yield of the IR Nutrizinc rice variety. Data collection was carried out in October 2024 - February 2025 in Kampung Payung Rejo, Pubian District, Central Lampung Regency. The treatments were arranged factorially (2x3) using a completely randomized design with 3 replications. Factor I was without biochar and given 20 tons/ha of biochar. The second factor was 3 benzladenin (BA) concentrations, namely 0 ppm, 50 ppm, and 100 ppm applied by spraying on the surface of the plant at 20, 30, and 40-days after transplanting, while the biochar application was implemented 2 weeks before transplanting. Observed variables included plant height, maximum tillers per clump, count of productive tillers, length of panicles, and grains per panicle, percentage of empty grains per panicle, dry harvested grain yield, dry harvest grain yield, 1000 grain weight and dry weight of the crownThe Bartlett test was employed to assess the homogeneity of variance among treatments then analysis of variance was carried outIf a notable difference existed between treatments, the BNT test was carried out at the 5% significance level. The findings indicated that applying 20 tons/ha of biochar enhanced the yield components in terms of dry harvested grain, dry milled grain, and dry shoot weight The application of 50 ppm BA was able to increase the growth and yield of grain compared to without benzyladenine (BA). The combination of biochar and BA enhanced the growth and yield of grain in terms of the number of grains per panicle, dry harvested grain, and dry milled grain. The use of 20 tons/ha biochar combined with 50 ppm BA enhanced the yield of the IR Nutrizinc
SELEKSI DURA ANGOLA DIDASARKAN ANALISIS VARIASI FENOTIPE Lesmana, Bayu; Setiawan, Kukuh; Hapsoro, Dwi; Asmono, Dwi; Karyanto, Agus
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11259

Abstract

Indonesia remains the world’s leading producer of palm oil, contributing substantially to the national economy. Sustaining productivity growth requires the development of superior varieties characterized by high oil yield, reduced trunk height increment, and enhanced oil quality. Dura Angola, a germplasm originating from Africa and introduced by PT Binasawit Makmur in 2010, offers the potential to broaden the narrow genetic base of Dura while providing valuable agronomic traits. This study aimed to identify promising genotypes and select superior Dura Angola populations based on phenotypic variation and genetic parameters. The research was conducted at Mesuji Estate, PT Aek Tarum, South Sumatra, on 1,029 Dura Angola palms planted in 2012. Traits evaluated included yield components (bunch number, fresh fruit bunch weight, average bunch weight), vegetative growth (annual trunk height increment, rachis length, leaf area, frond production), and oil yield components (fruit-to-bunch ratio, mesocarp-to-fruit ratio, oil-to-wet mesocarp ratio, oil-to-bunch ratio, and oil extraction rate). Data were analyzed using an Unbalanced Incomplete Block Design within a General Linear Model framework, followed by estimation of heritability, genetic and phenotypic coefficients of variation, and trait correlations. Significant phenotypic variation was observed for most traits, with high heritability detected in bunch number, fresh fruit bunch weight, rachis length, leaf area, fruit-to-bunch ratio, and oil-to-bunch ratio. Based on the integration of genetic estimates and phenotypic performance, ten elite individuals were identified from accessions A074/20, A040/22, A040/12, A095/05, A041/26, A041/22, and A075/08. These individuals are recommended as potential female parents for introgression with elite Dura lines or to produce commercial D×P hybrids. The utilization of these selected Dura Angola individuals is expected to broaden the genetic base of Dura, improve breeding efficiency, and support the development of superior oil palm varieties for sustainable intensification.
PENGARUH PEMOTONGAN BIJI DAN APLIKASI GA3 TERHADAP PERKECAMBAHAN TANAMAN ALPUKAT (Persea americana Mill.) SEBAGAI UPAYA PENYEDIAAN ROOTSTOCK YANG BERADAPTASI LUAS Pratiwi, Bela Ayu; Yusnita, Yusnita; Hapsoro, Dwi; Karyanto, Agus; Ramadiana, Sri
Jurnal Agrotek Tropika Vol. 13 No. 1 (2025): JURNAL AGROTEK TROPIKA VOL 13, FEBRUARI 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i1.6802

Abstract

Batang bawah (rootstock) yang digunakan dalam perbanyakan alpukat melalui grafting umumnya berasal dari biji sehingga menghasilkan perakaran yang kuat dan dapat beradaptasi luas. Namun, biasanya beberapa biji mengalami perkecambahan dan pertumbuhan yang terhambat sehingga rootstock yang diperlukan untuk dilakukan penyambungan menjadi tidak seragam dalam pertumbuhannya. Upaya yang dapat dilakukan untuk mengatasi hal ini yaitu dengan cara pemotongan biji bagian bawah dan aplikasi zat pengatur tumbuh (GA3). Penelitian ini dilakukan bertujuan untuk mempelajari pengaruh pemotongan biji bagian bawah, perendaman biji dalam beberapa konsentrasi GA3, dan kombinasi antara pemotongan biji bagian bawah dan perendaman biji dalam beberapa konsentrasi GA3 terhadap perkecambahan dan pertumbuhan seedling alpukat yang beradaptasi luas. Percobaan ini dilaksanakan dengan rancangan acak lengkap dengan perlakuan yang disusun secara faktorial (2x3) dan tiga ulangan. Faktor pertama yaitu pemotongan biji bagian bawah yang terdiri dari dua taraf yaitu tanpa pemotongan dan pemotongan, sedangkan faktor kedua yaitu perendaman dalam beberapa konsentrasi GA3 yang terdiri dari 3 taraf yaitu 0, 250, dan 500 ppm. Data pengamatan yang diperoleh dilakukan uji F dan uji lanjut menggunakan beda nyata terkecil dengan taraf 5%. Hasil penelitian menunjukkan bahwa pemotongan biji bagian bawah mampu mempercepat tercapainya semua biji berkecambah (100%) dalam 4 minggu setelah tanam (MST) pada semua perlakuan GA3, sedangkan tanpa pemotongan biji belum semuanya berkecambah kecuali pada perlakuan aplikasi GA3 500 ppm. Perendaman biji dalam GA3 250 atau 500 ppm mempercepat perkecambahan biji dan meningkatkan pertumbuhan seedling alpukat.
Effects of Organic Matters as Source of the Plant Growth Regulator on Seedling Growth of Mangosteen (Garcinia mangostana L.) Berlintina, Duta; Karyanto, Agus; Rugayah; Hidayat, Kuswanta Futas
Jurnal Hortikultura Indonesia (JHI) Vol. 11 No. 2 (2020): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.11.2.110-119

Abstract

Mangosteen (Garcinia mangostana L.) is one of the fruits that have a high potential in the market compared with other tropical fruit, mangosteen, but production is still very low. The main obstacle in the cultivation of mangosteen is slow growth due to lack of lateral roots, especially of plant origin mangosteen seeds. Therefore, efforts should be made to accelerate the growth of mangosteen seedling. This research aims to optimize the growth of mangosteen seedling, growth regulator technology using natural extracts of onion and sprouts extract with a different frequency of administration. The research was conducted in the greenhouse of Faculty of Agriculture, University of Lampung from October 2018 to March 2019. This study uses treatments arranged as factorial (2x3) in a randomized complete block design were repeated three times. The first factor is the type of extracts of onion and sprouts, and the second factor is the frequency of 1, 2, and 3 times. Data were analyzed by analysis of variance and the separation of the middle values ​​with orthogonal contrasts test at 5% significance level. The results showed that the giving of organic matter from the ZPT source one better in improving the mangosteen seedling fresh weight compared to the frequency of two or three times with the difference in weight of 0.47 g (12.71%). Mangosteen seedling root development is increased when treated with one application of sprout extract, but when using shallot extract two or three applications would be required.
The Effect of Shallot and Tomato Extract Consentrations on the Growth of Mangosteen Seedling (Garcinia mangostana L.) Rugayah; Suherni, Desi; Cahya Ginting, Yohannes; Karyanto, Agus
Jurnal Hortikultura Indonesia (JHI) Vol. 12 No. 1 (2021): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.12.1.42-50

Abstract

Kendala utama dalam budidaya tanaman manggis adalah lambatnya pertumbuhan fase seedling karena minimnya akar yang terbentuk. Untuk mengatasi masalah tersebut salah satu upaya yang dapat dilakukan yaitu dengan pemberian zat pengatur tumbuh pemacu pertumbuhan akar, salah satunya menggunakan ZPT alami dari ekstrak bawang merah dan tomat. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi ekstrak bawang merah dan ekstrak tomat yang terbaik pada pertumbuhan seedling manggis. Kedua bahan ini dipilih sebagai sumber zpt karena bawang merah sering digunakan untuk pemacuan akar pada setek dan tomat sering digunakan sebagai bahan addenda pada media kultur jaringan. Penelitian ini disusun secara faktorial (3×2) menggunakan rancangan acak kelompok (RAK) dengan perlakuan ekstrak bawang merah konsentrasi 0 g L-1, 400 g L-1, dan 800 g L-1, dan ekstrak tomat konsentrasi 0 g L-1 dan 100 g L-1 yang diulang sebanyak tiga kali. Data dianalisis dengan sidik ragam dan uji lanjut BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian ekstrak bawang merah konsentrasi 400 g L-1 dapat meningkatkan diameter batang, bobot segar tanaman, dan menunjukkan kecenderungan perlakuan yang terbaik pada jumlah akar sekunder seedling manggis. Pemberian ekstrak tomat 100 g L-1 dapat meningkatkan bobot segar tanaman dan terjadi interaksi antara pemberian ekstrak bawang merah dengan ekstrak tomat pada luas daun. Pada perlakuan ekstrak bawang merah konsentrasi 400 g L-1 tanpa penambahan ekstrak tomat atau perlakuan ekstrak tomat 100 g L-1 tanpa ekstrak bawang merah menghasilkan luas daun yang lebih tinggi dibandingkan dengan penggunaan kedua campuran ekstrak tersebut.
Successful Grafting of Two Indonesian Clones of Piper nigrum L. with P. colubrinum Link.: Effects of IBA and NAA on Rooting and Effects of BA on Grafting Yusnita, Yusnita; Hapsoro, Dwi; Prayogi, Adi Noor; Agustiansyah, Agustiansyah; Karyanto, Agus
AGRIVITA Journal of Agricultural Science Vol 46, No 1 (2024)
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.v46i1.3899

Abstract

This study aimed to investigate the effects of auxin types and their concentrations on rooting of the rootstock cuttings and BA on grafting. First, IBA, NAA or IBA+NAA, each at 0, 1000, 2000, and 3000 ppm were used as treatments to study rooting of Piper colubrinum. In the second experiment, BA (0 and 50 ppm) was applied to P. nigrum scion clones of Natar-1 and Petaling-2, before being grafted to the rootstocks. Results showed, that all types of auxins (IBA, NAA or IBA+NAA) induced rooting and shoot growth, and the increase of auxin concentrations led to the increase of rooting. However, their effectiveness was different. NAA and IBA+NAA were superior to IBA, and at 2000 ppm, IBA+NAA resulted in the best plant growth, as indicated by higher values of both rooting and shoot growth parameters. Compared to control, BA treatment on scions resulted in higher grafting success (80% vs. 93%) for Natar-1, and (73% vs.100%) for Petaling-2 clones.  BA treatment on scions also induced more calluses in the graft union and better shoot growth. To our knowledge, this is the first report on the use of BA to increase success of grafting between P. nigrum and P. colubrinum.
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