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All Journal JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Neo-Bis INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Dinamika Sosial Budaya Jurnal Riset Ekonomi dan Bisnis Menara Perkebunan Indonesian Journal of Clinical Pathology and Medical Laboratory (IJCPML) Jurnal Ilmiah Edunomika (JIE) SOLUSI Jurnal Tanah dan Iklim Jurnal Bingkai Ekonomi (JBE) Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Jurnal Informasi dan Komunikasi Administrasi (JIKAP) Unisia Sustainable Business Journal
Djoko Santoso
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PENGARUH PERSEPSI DUKUNGAN ORGANISASI DAN KOMITMEN ORGANISASI TERHADAP ORGANIZATIONAL CITIZENSHIP BEHAVIORAL VS Ariyanto; Christantius Dwiatmadja; Djoko Santoso
Sustainable Business Journal Vol 2, No 1 (2023): MARET
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/sbj.v2i1.7007

Abstract

The success of an institution is not only determined by many resources but also the human resources’ qualities and behaviours in the institution. Desired behaviour is the behaviour that can enhance the organizational quality that is Organizational Citizenship Behaviour (OCB). The purpose of this research is to test the impact of Perceived Organizational support, organizational commitment toward organizational citizenship behaviour (OCB) with servant leadership as a moderating variable. This research is a quantitative study using a survey with 52 respondents from Maria Mediatrix Middle School Semarang City, Central Java. Hypothesis testing uses the MRA (Moderated Regression Analysis) regression model. The result of the research shows that organizational support perception and commitment has different impact toward organizational citizenship behaviour (OCB) in Maria Mediatrix Junior High School, where the organizational commitment has significant impact while the organizational support perception is not. Servant leadership significantly affects organizational support perception relationship and organizational commitment toward organizational citizenship behaviour (OCB) in Maria Mediatrix Junior High School.  Keberhasilan sebuah lembaga bukan hanya ditentukan oleh banyak sumber daya salah satunya adalah  sumber daya manusia (SDM) dengan kualitas dan perilaku-perilaku yang timbul didalam lembaga tersebut. Perilaku yang diharapkan adalah perilaku yang dapat meningkatkan kualitas organisasi yaitu Organizational Citizenship Behavior(OCB). Tujuan dari penelitian ini adalah menguji pengaruh persepsi dukungan organisasi, komitmen organisasional terhadap organizational citizenship behavior (OCB) dengan servant leadership sebagai variabel moderating.  Penelitian ini merupakan penelitian kuantitatif menggunakan survei dengan responden seluruh pegawai SMP Maria Mediatrix Kota Semarang, Jawa Tengah yang berjumlah 52 orang. Pengujian hipotesis menggunakan regresi model MRA (Moderated Regression Analysis). Hasil penelitian menunjukkan bahwa persepsi dukungan organisasi dan komitmen organisasi memiliki pengaruh yang berbeda terhadap organizational citizenship behavior (OCB) di SMP Maria Mediatrix, dimana komitmen organisasi memiliki pengaruh yang signifikan sementara persepsi dukungan organisasi tidak. Servant leadership secara signifikan mempengaruhi hubungan persepsi dukungan organisasi dan komitmen organisasi terhadap organizational citizenship behavior (OCB) di SMP Maria Mediatrix.   
PENGARUH KOMPETENSI, KARAKTERISTIK INDIVIDU DAN BUDAYA ORGANISASI TERHADAP KEPUASAN KERJA DENGAN MOTIVASI SEBAGAI VARIABEL INTERVENING Roesalia Anggraenie; Christantius Dwiatmadja; Djoko Santoso
JURNAL ILMIAH EDUNOMIKA Vol 8, No 1 (2024): EDUNOMIKA
Publisher : ITB AAS Indonesia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/jie.v8i1.11163

Abstract

This research aims to analyze the influence of competency, individual characteristics, organizational culture, and motivation on job satisfaction, as well as analyze the influence of competency, individual characteristics, and Organizational Culture on Job Satisfaction with the intervening variable Motivation.This research method uses a type of research with a quantitative explanatory approach. The population and sample used were all Temanggung Regency Satpol PP and Fire Department contract employees, totaling 70 respondents. The sampling technique used was the census technique. Data analysis uses linear regression analysis by testing the t-test and Sobel test.The results of the analysis in this study show that the competency variable partially has a positive and insignificant effect on job satisfaction, the individual characteristic variable partially has an insignificant negative effect on job satisfaction, the organizational culture and motivation variables partially have a significant positive effect on job satisfaction, the influence of competence through motivation does not have a significant influence on job satisfaction and the influence of individual characteristics and organizational culture through motivation has a significant influence on job satisfaction.
Literasi Pengaruh Digital Lingkungan Kerja Dan Budaya Organisasi Terhadap Produktivitas Kerja Karyawan Melalui Kepuasan Kerja : Studi Pada Karyawan PT.EUDE Indonesia Bambang Wahyudiyono; Yuli Budiati; Djoko Santoso
Jurnal Bingkai Ekonomi (JBE) Vol 9 No 1 (2024): Januari 2024: Jurnal Bingkai Ekonomi (JBE) Januari 2024
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) - Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jbe.v9i1.358

Abstract

This type of research is explanatory research. The population of this study were employees of the production department of PT. EUDE Indonesia, Semarang. The sample taken was 80 employees. The sampling technique used was a simple random sample. The data collection method used was a questionnaire. The analysis technique used is PLS (Partial Least Square). Research results show that:The work environment has a positive and significant effect on job satisfaction, Organizational culture has a positive and significant effect on job satisfaction,Job satisfaction has a positive and significant effect on work productivity,The work environment has a positive and significant effect on work productivity,Organizational culture has a positive and significant effect on work productivity.The work environment has a positive and significant effect on employee work productivity with job satisfaction as a mediating variable,Organizational culture has a positive and significant effect on employee work productivity with job satisfaction as a mediating variable.
PKM PENGENALAN DASAR-DASAR AKUNTANSI SEBAGAI ALAT BANTU MENYUSUN LAPORAN KEUANGAN (Usaha Mikro Kecil Menengah/ UMKM): PKM AKUNTANSI Wyati Saddewisasi; Djoko Santoso; Indarto
Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Vol. 2 No. 1 (2022): April : Jurnal Pengabdian Kepada Masyarakat Indonesia (JPKMI)
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkmi.v2i1.175

Abstract

The purpose of this community service is to provide training and let the trainees understand the process of preparing financial reports with the accounting system. The benefits of training that MSME entrepreneurs and participants can take are 1) Making accounting-based financial reports, 2) The possibility of participants being able to transmit their knowledge to MSME business owners who do not take part in the training, 3) Giving information about basic accounting knowledge which can be applied to the financial application reports with computer-based software, 4) Skills in making financial reports are increasing, 5) It is easy to enter financial data with accounting-based software.
Studi Pemodelan Respon Polarisasi Terinduksi dalam Kawasan Waktu (TDIP) terhadap Kandungan Mineral Logam, Sebuah Hasil Awal Yatini Y; Djoko Santoso; Agus Laesanpura; Budi Sulistijo
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4984

Abstract

Modelling studies of Time Domain Induced Polarization (TDIP) performed to obtain the relationship between parameters responses to metallic mineral content. This study includes mathematical, forward, physical and inversion modelling. Mathematical modelling is done by solving the Laplace equation to obtain the IP responses. Forward modelling is done by developing a numerical workflow to generate theoretical curves. Physical modelling obtained the data from various parameters of target measurement. TDIP responses that compared with the theoretical curves are the results of mathematical modelling. The best response of IP can be obtained by inversion modelling. TDIP responses measurement by varying target’s metallic mineral content is done for understanding the relationship between them. The amplitude of IP responses in forward modelling is determined by target’s radius and depth ratio, and ratio of background resistivity and target’s resistivity. The higher target’s radius and depth ratio, the higher the amplitude. There is a good correlation between TDIP responses to the presence of the target and the possibility of metallic mineral content in target.
PENGARUH PENGETAHUAN PERPAJAKAN, KUALITAS PELAYANAN DAN SANKSI PAJAK TERHADAP KEPATUHAN WAJIB PAJAK BADAN MENGIKUTI TAX AMNESTY DENGAN KONDISI KEUANGAN SEBAGAI VARIABEL MODERATINGNYA CITRA ANDRIANI KUSUMAWAI; Indarto SE; Djoko Santoso
Solusi Vol. 20 No. 3 (2022): July
Publisher : Fakultas Ekonomi, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/slsi.v20i3.5749

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh pengetahuan perpajakan, kualitas pelayanan dan sanksi pajak terhadap kepatuhan wajib pajak badan mengikuti tax amnesty dengan kondisi keuangan sebagai variabel moderatingnya. Sampel yang digunakan sebanyak 200 wajib pajak badan di Kota Semarang sebagai client konsultan pajak yang mengikuti program tax amnesty. Metode pengumpulan sampel menggunakan purposive sampling. Penelitian ini berhasil membuktikan secara empiris bahwa (1) pengetahuan perpajakan berpengaruh positif terhadap kepatuhan wajib pajak mengikuti tax amnesty, (2) Kualitas Pelayanan berpengaruh positif terhadap kepatuhan wajib pajak mengikuti tax amnesty, (3) Sanksi perpajakan berpengaruh positif terhadap kepatuhan wajib pajak mengikuti tax amnesty, serta (4) Kondisi keuangan dapat memoderasi pengaruh pengetahuan perpajakan, kualitas pelayanan dan sanksi pajak terhadap kepatuhan wajib pajak badan mengikuti tax amnesty.Kata kunci :       Kepatuhan wajib pajak, Kondisi Keuangan, Pengetahuan Perpajakan, Kualitas Pelayanan, Sanksi Pajak
Penggunaan biostimulan Orgamin untuk efisiensi pemupukan dan peningkatan produktivitas kelapa sawit di dataran tinggi Application of Orgamin biostimulan to enhance fertilizer efficiency and productivity of oil palm grown in highland Happy WIDIASTUTI; Djoko SANTOSO; Soekarno Mismana PUTRA; Memed WIRAMIHARDJA; Aida FARIDA; B. MARAHIMIN MARAHIMIN; K. PANJAITAN PANJAITAN; Jisman SINAGA
Menara Perkebunan Vol. 81 No. 2: 81 (2), 2013
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v81i2.37

Abstract

AbstractThe extension of oil palm area has been expanded tomarginal land such as the highland regions. However, theproductivity of the oil palm became the main demand for theplanters. Increasing of oil palm productivity can be done byapplication of growth regulators. Growth regulators aresmall molecules in a relatively very small amount that affectthe growth and development of plant. This study wasconducted to asses the efectiveness of plant growth regu-lators (Orgamin and Orgamin plus) in improving fertilizerefficiency and productivity of mature oil palm (TM 7). Theexperiments were conducted at Marjandi oil palm plantationat an altitude of 700 m above sea level in a total area of 16 ha. Six treatments tested were 1). 100% inorganicfertilizer (control), 2). 50% inorganic fertilizer + Orgamin(50K+O), 3). 75% inorganic fertilizer + Orgamin (75K+O),4). 50% inorganic fertilizer + Orgamin plus (50K+OP), 5).75% inorganic fertilizer + Orgamin plus (75K+OP), and 6).100% inorganic fertilizer + Orgamin plus (100K+OP)arranged in a randomized block design (RBD) with threereplications. Orgamin (O) and Orgamin plus (OP) wereapplied in the hole around the oil palm along with inorganicfertilizers. The results showed that application of O and OPimproved the efficiency of inorganic fertilizers by 50% basedon vegetative variables and increased the concentration ofN, P, and K of leaf and soil compared to those of 100%inorganic fertilizer. In addition to the height and leaf numberof plant parameters, the leaf of the plant treated with O andOP showed more greenish compared to those of control.There is an indication that the O application increased thepercentage of female flowers. In addition the application ofOrgamin also produced the highest oil content in oil palmfruit particularly in the treatment of 75% of inorganicfertilizer + orgamin harvested in October compared to thosein March. Moreover, application of OP increased both thetotal weight and weight per bunch of FFB.AbstrakPengembangan kelapa sawit mengharuskan pengguna-an lahan suboptimal seperti daerah dataran tinggi. Produk-tivitas kelapa sawit menjadi tuntutan utama bagi pekebun.Peningkatan produktivitas kelapa sawit di dataran tinggididuga dapat dilakukan dengan aplikasi zat pengatur tumbuh.Zat pengatur tumbuh merupakan molekul “kecil” (small molecules) yang dalam jumlah relatif sangat sedikit mem-pengaruhi pertumbuhan/perkembangan tanaman. Penelitiandilakukan untuk menguji formula zat pengatur tumbuh(Orgamin dan Orgamin plus) dalam meningkatkan efisiensipemupukan dan produktivitas kelapa sawit TM 7. Percobaandilakukan di kebun Marjandi dengan ketinggian 700 dpl padaareal seluas 16 ha. Enam perlakuan yang diuji adalah 1).pupuk anorganik 100% (100K), 2). pupuk anorganik 50% +Orgamin (50K+O), 3). pupuk anorganik 75% + Orgamin(75K+O), 4). pupuk anorganik 50% + Orgamin plus (50K+OP), 5). pupuk anorganik 75% + Orgamin plus (75K+OP),dan 6). pupuk anorganik 100% + Orgamin plus (100K+OP)yang disusun dalam rancangan acak kelompok (RAK)dengan tiga ulangan. Orgamin (O) dan Orgamin plus (OP)diberikan dalam lubang di piringan pokok bersamaan denganpupuk anorganik. Hasil pengamatan menunjukkan bahwapemberian O dan OP dapat meningkatkan efisiensi pemupuk-an anorganik hingga 50% dilihat dari beberapa peubahvegetatif dan menghasilkan kadar N, P, dan K daun dantanah lebih tinggi dibandingkan dengan pemberian pupukanorganik 100%. Selain pada parameter tinggi tanaman danjumlah daun, peningkatan juga terlihat pada tingkatkehijauan daun. Terdapat indikasi bahwa pemberian Orgaminmeningkatkan persentase jumlah bunga betina. PemberianOrgamin juga menghasilkan kadar minyak tertinggi khusus-nya pada pemberian Orgamin + pupuk anorganik 75% padabuah yang dipanen bulan Oktober dibandingkan dengan buahyang dipanen bulan Maret. Baik data bobot per tandanmaupun bobot TBS menunjukkan bahwa pemberian OPdapat meningkatkan kedua peubah tersebut. 
Kloning cDNA lengkap penyandi ACCase subunit biotin carboxylase dari mesokarp kelapa sawit (Elaeis guineensis Jacq.) Cloning of full length cDNA encoding ACCase subunit biotin carboxylase from mesocarp of oil palm (Elaeis guineensis Jacq.) Asmini BUDIANI; Antonius SUWANTO; Hajrial ASWIDINNOO; Djoko SANTOSO; Basil J NIKOLAU
Menara Perkebunan Vol. 81 No. 2: 81 (2), 2013
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v81i2.43

Abstract

AbstractAcetyl-CoA Carboxylase (ACCase) is considered to beone of the key enzymes in palm oil biosynthesis. Availabilityof genes encoding this enzyme would give some advantagesin the molecular breeding of oil palm. Over expression ofthe genes in the oil palm mesocarp might increase the oilproduction in this tissue. On the other hand, downregulating of ACCase could divert the central metaboliteAcetyl-CoA to other product such as PHB (Polyhydroxy-butyrate), one of the known biodegradable plastic. Thispaper reported the work of cloning of the full length codingsequence of biotin carboxylase (BC), one subunit of theACCase. Based on the DNA sequence of the BC conservedregion that had cloned previously, primers pairs weredesigned to amplify 5’- and 3’- cDNA ends of BC usingRACE-PCR. The RACE products of 5’- and 3’- cDNA endsof BC were cloned into E.coli, and the DNAs weresequenced and analysed. The full cDNA of BC was obtainedby reisolation of the cloned 5’- and 3’- cDNA ends followedby digestion using KpnI, ligation into pGEM-T vector andcloning into E.coli. Colony PCR was carried out to confirmthat the target gene has been cloned. The recombinantplasmid containing full cDNA of BC was then isolated forDNA sequencing. The results showed that the 5’-BC (1367bp), 3’- BC (1032 bp), and the full length cDNA encodingBC (2182 bp) had been successfully cloned, and the DNAsequence had been confirmed as gene encoding ACCasesubunit biotin carboxylase.AbstrakAcetyl-CoA Carboxylase (ACCase) merupakan salahsatu enzim kunci dalam biosintesis minyak sawit. Keter-sediaan gen penyandi enzim ini sangat berguna dalampemuliaan kelapa sawit secara molekuler. Over-ekspresi genpenyandi ACCase pada mesokarp dapat meningkatkan pro-duksi minyak pada jaringan tersebut. Sebaliknya ekspresiACCase dapat ditekan melalui mekanisme down regulation sehingga metabolit central Acetyl-CoA dapat diarahkanuntuk menghasilkan produk lain seperti PHB (polyhydro-xybutyrate), salah satu jenis biodegradable plastik yangtelah banyak dikenal. Penelitian ini bertujuan untukmengklon cDNA lengkap penyandi ACCase subunit biotincarboxylase (BC) dari mesokarp kelapa sawit. Berdasarkansekuen DNA daerah konservatif BC yang telah diklon darimesokarp kelapa sawit pada penelitian sebelumnya, duapasang primer dirancang untuk mengamplifikasi daerahujung 5’- dan 3’- cDNA BC dengan RACE-PCR. Produk5’-RACE dan 3’-RACE diklon dan disekuen. cDNAlengkap penyandi BC diperoleh dengan jalan mengisolasikembali fragmen 5’- dan 3’- cDNA terklon, dilanjutkandengan digesti menggunakan enzim restriksi KpnI, ligasikedua fragmen ke vektor kloning pGEM-T, dan introduksike dalam E. coli. Setelah dilakukan PCR koloni untukmenguji keberhasilan kloning, plasmid rekombinan yangmengandung cDNA lengkap dari BC diisolasi untuk analisissekuen DNA. Dari penelitian ini fragmen cDNA 5’-BC(1367 pb) dan 3’- BC (1032 pb), serta cDNA lengkappenyandi BC berukuran 2182 pb telah diperoleh dan diklondalam E. coli. Analisis sekuen DNA mengkonfirmasi bahwacDNA terklon adalah benar gen penyandi ACCase subunitbiotin carboxylase.
Respons awal pemberian biostimulan Orgamin pada kelapa sawit (Elaeis guineensis Jacq.) di Kebun Marjandi PTPN IV Early response of Orgamin biostimulan application in oil palm (Elaeis guineensis Jacq.) at PTPN IV Marjandi plantation Soekarno Mismana PUTRA; Djoko SANTOSO; Happy WIDIASTUTI; A. H. SARAGIH SARAGIH; M. A. GHONI GHONI; B. MARAHIMIN MARAHIMIN; K. PANJAITAN PANJAITAN
Menara Perkebunan Vol. 81 No. 1: 81 (1), 2013
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v81i1.51

Abstract

AbstractEffort to increase the production of oil palm can beconducted through application of plant growth regulator(PGR). Orgamin biostimulan is a natural PGR formulathat has been tested to improve the vegetative growths ofcorn and oil palm in the glass house. Assessment ofOrgamin and Orgamin plus (Orgamin + micro nutrient)applications at commercial scale was carried out inMarjandi oil palm plantation of PTPN IV usingrandomized block design with three treatments, i.e. K =100% recommended dose of inorganic fertilizer(control), O= Orgamin (1.5 kg/tree) + 50% dose ofinorganic fertilizer, OP = Orgamin plus (1.5 kg/tree)without inorganic fertilizer. The parameters ofobservation at 2.5 months after the treatments were soiland leaf nutrient contents (N, P, K, Mg), percentage offemale flower, mesocarp oil content, and harvested freshfruit bunches (FFB). The observation showed that therewas an increased in oil yield, weight of FFB and leafnutrient content, while the percentage of female flowerand nutrient content of soil were not significantlydifferent compared to the control.AbstrakUpaya untuk meningkatkan produksi kelapa sawitdapat dilakukan antara lain melalui pemberian zatpengatur tumbuh (ZPT). Biostimulan Orgamin merupa-kan formula ZPT alami yang telah diuji di rumah kacapada tanaman jagung dan bibit kelapa sawit. Uji cobaaplikasi Orgamin dan Orgamin plus (Orgamin yangdiperkaya hara mikro) pada skala lapang dilakukan dikebun kelapa sawit Marjandi PTPN IV denganmenggunakan Rancangan Acak Kelompok (RAK) untukmenguji tiga perlakuan, yaitu 1) K (kontrol) = 100%dosis anjuran pupuk kimia (APK = kontrol), 2) O = 50%dosis APK + Orgamin (1,5 kg/pohon), 3) OP = Orgaminplus (1,5 kg/pohon) tanpa pupuk kimia. Peubah yangdiamati pada 2,5 bulan setelah perlakuan adalah kan-dungan hara tanah dan daun (N, P, K, Mg), persentasebunga betina, rendemen minyak mesokarp, dan produksitandan buah segar (TBS). Hasil yang diperoleh menunjukkan terdapat peningkatan rendemen minyak, bobotTBS dan kandungan hara daun, sedangkan persentasebunga betina dan kandungan hara tanah tidak menunjuk-kan perbedaan yang nyata antara perlakuan dan kontrol.
The effects of seaweed fertilizer on the growth and productivity of upland rice, maize and oil palm grown in green house Pengaruh pupuk rumput laut terhadap pertumbuhan dan produktivitas padi gogo, jagung dan kelapa sawit di rumah kaca Djoko SANTOSO; Tetty CHAIDAMSARI; . SYAFARUDDIN; Dedi Soleh EFFENDI
Menara Perkebunan Vol. 79 No. 2: 79 (2), 2011
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v79i2.61

Abstract

AbstrakSebagai negara kepulauan di daerah tropis, Indonesiakaya akan sumberdaya alam untuk swasembada pangan.Berjuta-juta hektar lahan di Indonesia ditanami tanamanperkebunan, tanaman tahunan yang memiliki masa juvenilyang relatif lama, terutama tanaman kelapa sawit dan karet.Sementara itu, upaya untuk meningkatkan produksi panganterkendala oleh terbatasnya lahan subur. Penelitian yangmengeksplorasi bioregulator alami mampu meningkatkanproduktivitas tanaman, menemukan bahwa Sargasum sp.,rumput laut tipe liar yang di sepanjang pantai beberapawilayah Indonesia, menunjukkan kemampuannya meningkat-kan pertumbuhan dan produktivitas tanaman seperti padi,jagung, tomat dan pertumbuhan kelapa sawit tanpapenambahan pupuk kimia. Percobaan pada padi gogovarietas Batutegi yang ditanam di rumah kaca, menunjuk-kan bahwa bioregulator alami tersebut meningkatkanproduktivitasnya 50% lebih tinggi daripada kontrolnya.Percobaan menggunakan jagung var. Arjuna, tanaman yangtelah diperlakukan dengan bioregulator tersebut mem-produksi dua hingga tiga tongkol, sementara pada tanamankontrol hanya satu tongkol. Percobaan pada tanamankelapa sawit di rumahkaca memperlihatkan bahwa bio-regulator tersebut menginduksi pertumbuhan vegetatifnyasecara signifikan, lebih baik daripada kontrol dengan atautanpa pupuk kimia. Intercropping tanaman kelapa sawitTBM dengan tanaman pangan seperti padi gogo ataujagung, diharapkan lebih menguntungkan bagi usahaperkebunan.AbstractBeing a tropical archipelago, Indonesia is rich withnatural resources enabling more production for food.Millions hectares of Indonesian lands is now planted withestate crops, perennial crops with relatively lengthenjuvenile phase mainly oil palm and rubber. Meanwhile,attempts to increase national food production have beenlimited by availability of fertile lands. Our researchexploring natural bioregulator capable of improving cropproductivity, found that Sargasum sp., a wild sea weedgrown mostly along the coast line in Indonesia, indicated itsability to improve the growth and productivity of crops likerice, maize, tomato and oil palm even though with nochemical fertilizers added. The experiment on upland rice oflocal variety Batutegi planted in greenhouse, demonstratedthe natural bioregulator has increased the rice productivityby at least 50% over the control. The experiment usingmaize var. Arjuna, the bioregulator treated plants has madetwo to three corncobs instead of only one corncob on thecontrol plants. The experiment on the oil palm grown in thenursery showed that the bioregulator has significantlyinduced vegetative growth better than the control with orwithout chemical fertilizers. Intercropping the food crops,rice or maize in the juvenile phase of the oil palmplantations, should be beneficial to the productivity of theplantation.
Co-Authors . Mansyurdin . SAMANHUDI . SYAFARUDDIN A. H. SARAGIH SARAGIH A.R. PURBA PURBA Abdul Mollah S. JAYA Agus Laesanpura Agustina A. HANDAYAN Aida Farida Ajeng Nuzulia H Antonius Suwanto Anwar, Aswaldi Aprih Santoso Asmini Budiani Auzar SYARIEF B. MARAHIMIN MARAHIMIN Bambang S PURWOKO Bambang Wahyudiyono Basil J NIKOLAU Budi Sulistijo Candra Auromiqo Christantius Dwiatmadja CITRA ANDRIANI KUSUMAWAI Deden Dewantara ERIS DEDI SOLEH EFFENDI Dini Astika SARI Efendi, Darda F NURILMALA Fauziatul FITRIYAH GALUH WENING PERMATASARI Hajrial ASWIDINNOO HAJRIAL ASWIDINNOOR Hanny Hafiar Happy Widiastuti HAPPY WIDIASTUTI Hayati Minarsih Hayati MINARSIH I GEDE PUTU WIGENA Imron Riyadi Indarto Indarto Indarto Indarto SE Irma KRESNAWATY Isnu Irwantoro Jayawarsa, A.A. Ketut Jisman SINAGA K. PANJAITAN PANJAITAN M. A. GHONI GHONI Mayta Novaliza Isda Memed WIRAMIHARDJA Muhammad Jusuf Muhammad Munir Musliar Kasim Niyyah FITRANTI Niyyah FITRANTY Oktaviany Ferry TRIASTANTO Patni Ninghardjanti R.D.B LEFROY Rita Hayati Riza A PUTRANTO Riza A. PUTRANTO Roedhy Poerwanto Roesalia Anggraenie SATRIYAS ILYAS Soekarno Mismana Putra Suharyanto Sukarti Moeljopawiro Tetty CHAIDAMSARI Tri Panji Umi Rochayati VS Ariyanto Wyati Saddewisasi Yatini Y Yora FARAMITHA Yuli Budiati Yuniarti Anis Pramukawati