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All Journal Jurnal Natur Indonesia Jurnal Penelitian Pertanian Terapan Jurnal Agrotek Tropika Jurnal Agrotropika
Kukuh Setiawan
Universitas Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

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KELIMPAHAN ARTHROPODA TANAH PADA PERTANAMAN UBIKAYU YANG DIPERLAKUKAN DENGAN PUPUK MIKRO Tanjung, Rioga N; Susilo, F.X.; Hariri, Agus M; Setiawan, Kukuh
Jurnal Agrotek Tropika Vol 6, No 3 (2018)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (767.615 KB) | DOI: 10.23960/jat.v6i3.2923

Abstract

Penambahan pupuk mikro merupakan salah satu upaya dalam pemenuhan nutrisi bagi tanaman untuk dapat tumbuh dengan optimal. Tanaman yang sehat akan cenderung lebih tahan terhadap serangan hama. Hal ini dapat diketahui dari keberadaan organisme yang ada pada tajuk tanaman tersebut. Kelimpahan arthropoda tanah menjadi indikator keterkaitan antara organisme yang berada di atas dan di bawah tajuk tanaman. Penelitian ini bertujuan untuk mengetahui kelimpahan arthropoda tanah pada lahan pertanaman ubikayu yang diperlakukan dengan pupuk mikro. Penelitian dilakukan pada pertanaman ubikayu di DesaBumi Aji, Kecamatan Anak Tuha, Kabupaten Lampung Tengah pada November 2016 – Mei 2017. Rancangan percobaan disusun menggunakan nested design dengan tiga perlakuan yaitu tanpa pupuk mikro (A0), pupuk mikro 20 kg/Ha (A1), danpupuk mikro 40 kg/Ha (A2). Sampling arthropoda tanah dilakukan dengan pitfall trap. Data yang diperoleh dianalisis ragam. Pemisahan nilai tengah dilakukan dengan Uji BNT pada taraf 0,05. Hasil penelitian menunjukkan bahwa sepuluh ordo arthropoda tanah ditemukan pada pertanaman ubikayu di Desa Bumi Aji, yaitu Collembola, Hymenoptera, Orthoptera, Coleoptera, Hemiptera, Diptera, Isoptera, Diplura, Araneae, dan Diplopoda. Adapun dari sepuluh ordo arthropoda tersebut, terdapat dua ordo yang dominan, yakni Collembola dan Hymenoptera. Pupuk mikro tidak berpengaruh pada kelimpahan Collembola, namun menurunkan kelimpahan Hymenoptera (semut). Pupuk mikro tidak berpengaruh pada kelimpahan Orthoptera, Coleoptera, Hemiptera, Diptera, Isoptera, Diplura, Araneae, dan Diplopoda.
Pewarisan Sifat Densitas Stomata dan Laju Kehilangan Air Daun (rate leaf water loss RWL) pada Kacang Tanah (Arachis hypogaea L.) Adisyahputra, Adisyahputra; Sudarsono, Sudarsono; Setiawan, Kukuh
Jurnal Natur Indonesia Vol 14, No 1 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.975 KB) | DOI: 10.31258/jnat.14.1.73-89

Abstract

The aim of this research is to analyze and examine the inheritance of stomatal density trait and RWL as a variable in drought tolerance ofpeanut. The experiment was conducted by using cv. Kelinci that is sensitive genotype as female parent and US 605 which is tolerantgenotype as male parent, including population off spring from hybrid cv. Kelinci (P1) with US 605 (P2). Stomatal density was determinedby making leaf imprint and by observing leaf imprint under microscope. Relative water loss was determined by dipping peanut leaf in PEG40% for 48 hours. Result of the analysis showed that stomatal density and RWL were not only controlled by qualitative characters of majorgene, but also controlled by quantitative character of minor gene by polygenic with the complex gene action. Both characters seem toinfluence more as genetic factor and have high level fixation additive varians which can give the opportunity to obtain the tolerant offspring.
PENGARUH APLIKASI BEBERAPA KONSENTRASI PACLOBUTRAZOL DAN KOH TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN UBI KAYU (MANIHOT ESCULENTA CRANTZ) Aritonang, Prasasti Dame; Ardian, Ardian; Setiawan, Kukuh
Jurnal Penelitian Pertanian Terapan Vol 19, No 3 (2019)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v19i3.1047

Abstract

This study aimed to evaluate the effect of paclobutrazol and KOH application through leaf togrowth and production of cassava.  This study was conducted from March 2017 to October 2018 in an Integrated Field Universityof Lampung. The treatmens was arranged factorially (4 x 4) in a complete randomized block design with 4 replications be avowed as group.  The main factor were paclobutrazol consist of P1 = 0 ppm (control, no treatment), P2 = 400 ppm, P3 = 500 ppm and P4 = 600 ppm.  The second factor were KOH consist of K1 = 0% (control, no treatment), K2 =0,5%, K3 = 1% and K4 = 1,5 given a week after paclobutrazol?s application.  This study used cassava cutting varieties of kasesart.  Observation variables were plant height, number of books, number of fresh leaves, fresh weight of leaves, dry weight of leaves, fresh weight of stem, dry weight of stem, fresh weight of tubers, dry weight of tubers.  Data of each treatments were calculated its mean value and tested homogeneity.  Homogeneous data were analyzed variance and followed by the smallest real difference testat level 5%.The study?s result showed that paclobutrazol application had inhibited effect the vegetative growth of plant height, number of nodes, fresh and dry weight of stem cassava plants.  Application of KOH had a significant effect only on number of fresh leave at 13 week after planted.  The interaction of paclobutrazol and KOH treatment had a significant effect on leaf dry weight.   
Pengaruh Irigasi terhadap Pertumbuhan dan Produksi Kelapa Sawit Evizal, Rusdi; Sari, Rina Yunika; Saputra, Hidayat; Setiawan, Kukuh; Prasmatiwi, Fembriarti Erry
JURNAL AGROTROPIKA Vol 20, No 1 (2021): Jurnal Agrotropika Vol 20 No 1, Mei 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v20i1.4848

Abstract

Growth and yield of oil palm is largely determined by climatic conditions especially in the dry season.  The purpose of this study was to determine the effect of planting date and irrigation in the dry season of 2015 on the growth and production of palm oil in 2016.  The data collecting was conducted from June to October 2016 at a plantation company, Southern Lampung.  Treatments were arranged by factorial (3x2) in randomized block design with 7 replications.  The first factor was age categories consisted of mature trees planted 2001 (TD 2001), young trees planted 2009 (TM 2009), and young trees planted 2010 (TM 2010).  The second factor was irrigation (no irrigation and with irrigation). The irrigation used was bulk irrigation with rotation of once in a weeks during dry season (September-October).  Observed variables were number of broken frond, spear frond, dried frond, female inflorencence, and bunches yield.  Data was analyzed by analysis of the variance (ANOVA), and the differences of the mean were analyzed by Tuckey at 5% level of significant difference.  Irrigation decreased number of broken frond and dry frond. Irrigation increased fresh fruit bunch yield of certain months in current and next year. Age categories (young and mature) had no signicantly effect on number of bunch and fresh fruit bunch per tree. However there was interaction between age categories and irrigation on the average of bunch weight. Keywords : growth, oil palm, rainfall, water deficit, yield
Co-Authors Adisyahputra Adisyahputra, Adisyahputra Ardian Ardian Aritonang, Prasasti Dame F.X. Susilo, F.X. Fembriarti Erry Prasmatiwi Hariri, Agus M Hidayat Saputra, Hidayat Rusdi Evizal Sari, Rina Yunika Sudarsono Tanjung, Rioga N