Hidayat Pujisiswanto
Pascasarjana Universitas Gadjah Mada, Yogyakarta

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INCIDENCE DYNAMIC OF POD ROT DISEASE OF COCOA CLONES IN LAMPUNG, INDONESIA Evizal, Rusdi; ,, Sugiatno; ,, Ivayani; Pujisiswanto, Hidayat; Wibowo, Lestari; Erry Prasmatiwi, Fembriarti
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.117 KB) | DOI: 10.23960/j.hptt.218%p

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Incidence dynamic of pod rot disease of cocoa clones in Lampung, Indonesia. The declining of production and productivity of cocoa in Indonesia might due to pests and diseases attacks and planting unselected clones. Dynamic of pod rot incidence was important to plan pest controlling. To study dynamic incidence of some cocoa clones, a research was conducting in Pesawaran District, a centre of cocoa production in Lampung. A farmer cocoa plot under agro-forestry system was selected which had been upgrading in 2014 by pruning and side-grafting with national clones including Sul 1, MCC 1, MCC 2, ICCRI 7 and selected local clone named T1, T2, and T3. The results showed that pod rot incidence occurred along the year of observation. For immature pod, pod rot incidence was dynamic and varied among months and clones. There was high pod rot incidence every months for particular clone. National clone Sul1 and local clone T3 exhibited more tolerant to pod rot disease than other clones. Clones Sul1 and T3 also produced more pod than others. High incidence of pod rot occurred on fruit stage of cherelle (incidence 38.7%) and small pod (incidence 18.8%) that well known as cherelle wilt symptom.
Growth Performance of Mature Trees Resulted from Intra and Inter-specific Grafting on Robusta Coffee Evizal, Rusdi; Sugiatno, Sugiatno; Utomo, Setyo Dwi; Pujisiswanto, Hidayat; Widagdo, Setyo; Prasmatiwi, Fembriarti Erry; Stiawan, Aresta Dwi
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 2 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.707 KB) | DOI: 10.18196/pt.2018.083.77-83

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To improve yield and cup quality, mature coffee tree as rootstock could be grafted with scion of selected genotype. This research aimed to study growth performance of mature trees resulted from intra and inter-specific grafting on Robusta coffee. The research was arranged in Randomized Complete Block Design with 3 replications. There were 12 treatments of entrees/under-stump genotype for coffee grafting including 8 treatments of intraspecific local Robusta/Robusta grafting and 4 treatments of interspecific coffee grafting of Robusta/Liberica and Arabica/Robusta. The results showed that intraspecific grafting of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta resulted in grafting mortality of 9.8%, 10.9%, and 24.8%, respectively. Until 28 weeks after grafting, branch growth variables were significantly affected by scion/rootstock of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta grafting. Grafted Arabica/Robusta coffee showed the poor growth performance. In second year of Robusta/Robusta and Robusta/Liberica growth, generative growth of cherry inflorescence per branch and number of cherries per inflorescence were not affected by scion and rootstock genotypes. Leaf and branch growth were very important variables correlating with other variables.
Analisis Pertumbuhan Gulma, Tanaman dan Hasil Jagung dengan Berbagai Populasi Kacang Tanah dan Kacang Hijau dalam Sistem Tumpangsari Pujisiswanto, Hidayat; Hidayat, Kuswanta Futas
Jurnal Agrista 2008: Edisi Khusus Nomor 1 November 2008
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (585.264 KB)

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Weed-Crop Growth Analysis and Yield of Corn with Groundnut and Mungbean of Varying Plant Population in Intercropping SystemABSTRACT. The present experiment is designed to evaluated the weed-crop growth of intercrop between corn with mungbean and groundnut of varying plant populations. The experimental used the single factor field experiment that arranged with randomized completely block design with three block as replication. Intercropping followed additive series system, i.e.: (A) corn 100% + mungbean 25%, (B) corn 100% + mungbean 50%, (C) corn 100% + mungbean 75%, (D) corn 100% + groundnut 25%, corn 100% + groundnut 50%, (F) corn 100% + groundnut 75%. Experimental result showed that: Intercropping corn with groundnut and mungbean of able to weed growth suppressed of sedges, and Intercropping crop with groundnut at 75% rate of recommended population weed growth suppressed of total weeds compared to the other three mungbean populations. Intercropping corn with groundnut at 25% of recommended rate gave the highest sweet corn yield per hectare.
Effect of Acetic Acid as Pre-Emergence Herbicide on Maize Germination Pujisiswanto, Hidayat; Yudono, Prapto; Sulistyaningsih, Endang; Sunarminto, Bambang Hendro
Jurnal Penelitian Pertanian Terapan Vol 15, No 1 (2015)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.136 KB) | DOI: 10.25181/jppt.v15i1.113

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Profitable crop production starts with a weed control program that includes pre-emergence herbicides to deliver long-lasting, residual weed control. Pre-emergence herbicides are applied to prevent the germination of weed seeds. The study was conducted to determine the effect of acetic acid as a pre-emergence herbicide on maize germination. Pots experiment was conducted on August until September 2012. The experimental design used was Completely Randomized Design (CRD) single factor in four replicates. The application of pre-emergence acetic acid at several concentration, i.e. control (no acetic acid) 0%, 10% acetic acid and 20% acetic acid. The result showed that the pre-emergence aplication at 10% and 20% of the glacial acetic acid solution lowered pH were 5,12 and 5,43 respectively at one week after application, so that inhibited maize germination. No shoots and roots were grew. This was due to the increase of electrical conductivity (EC) or electrolyte leakage caused by the high permeability of the damaged membrane of seed. The EC of control treatment was 11μS/cm g, compared to 10 and 20% treatment of acetic acid were 36 μS / cm g and 55 μS / cm g EC respectively. Increasing concentration of acetic acid caused the higher of protein content leaked, i.e. 7,95%, 7,32% and 7,03% respectively for without acetic acid treatment, 10% and 20% acetic acid. Acetic acid also inhibited respiration rate of maize seed, where the higher concentration of acetic acid produced the lower respiration rate, i.e. 31.63 mg/g/hour, 12.38 mg/g/hour and 2,75 mg/g/hour respectively for without acetic acid treatment, 10% and 20% acetic acid. Keywords : Acetic Acid, Maize (Zea mays L.), Germination, Pre-Emergence Herbicide
Pengaruh Fermentasi Limbah Cair Pulp Kakao terhadap Tingkat Keracunan dan Pertumbuhan Beberapa Gulma Berdaun Lebar Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 12, No 1 (2012)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.691 KB) | DOI: 10.25181/jppt.v12i1.193

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The research was conducted to determine the effect of fermentation liquid waste cocoa pulp on the level of toxicity and growth some broad-leaved weeds. Experiments conducted in Way Halim, Sukarame, Bandar Lampung. The timing of the trial starting from June to July 2011. The design used was Randomized Design Group (RAK) with one factor, namely the time of fermentation of cocoa pulp effluent, namely: 1 week, 2 weeks, and 3 weeks. Each treatment was repeated thrice. Weed seeds used are young or vegetative phase. The results showed: (1) The Liquid waste cocoa pulp on the fermentation 2 and 3 weeks are able to control the growth of broad leaf weeds up to 4 MSA, visible from suppression the dry weight of weeds and levels of toxicity. (2) Fermentation 1-3 weeks to control weed growth Cleome rutidospermae DC and Agerotum conyzoides, while the other weeds that can be controlled with Asystasia gangética fermentation 3 weeks and Synedrella nudiflora able to be controlled by the fermentation of 2 and 3 weeks up to 4 MSA (3) Toxicity caused by the fermentation of cocoa pulp liquid waste is contact to visible blotches and burning weeds on the affected part. Keywords: broadleaf weeds, cocoa pulp, fermentation
PENGGUNAAN MULSA ALANG - ALANG PADA TUMPANGSARI CABAI DENGAN KUBIS BUNGA UNTUK MENINGKATKAN PENGENDALIAN GULMA, PERTUMBUHAN DAN PRODUKSI TANAMAN Pujisiswanto, Hidayat
Agrin : Jurnal Penelitian Pertanian Vol 15, No 2 (2011): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2011.15.2.122

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Percobaan lapangan untuk mengetahui pengaruh ketebalan mulsa alang-alang dan pola tanamtumpangsari terhadap pertumbuhan gulma dan produksi tanaman. Waktu pelaksanaan percobaan dimulai daribulan Juli sampai dengan November 2010. Rancangan yang digunakan adalah Rancangan Petak Jalur dengandua faktor dan tiga ulangan. Faktor pertama adalah mulsa alang-alang, yaitu M0: Tanpa mulsa ; M1: Mulsaketebalan 5 cm M2: Mulsa ketebalan 10 cm, Faktor kedua adalah pola tanam tumpangsari yaitu: P1: 100% cabai+ 25% kubis bunga ; P2: 100% cabai + 50% kubis bunga ; P2: 100% cabai + 75% kubis bunga. Hasil penelitianmenunjukkan bahwa (1) Penggunaan mulsa alang-alang 5 dan 10 cm dengan tumpangsari cabai 100% + kubisbunga 50% dan 75% mampu menekan pertumbuhan gulma dan menghasilkan pertumbuhan tanaman tertinggi.(2) Perlakuan ketebalan mulsa alang-alang 10 cm dan tumpangsari cabai 100% + kubis bunga 50%menghasilkan produksi buah cabai dan kubis bunga tertinggi.Kata kunci: cabai, gulma, kubis bunga, mulsa alang-alang, tumpangsari.ABSTRACTThe field experiment to find out the effect thickness of reed mulch and the planting pattern intercroppingon the growth of weed and crop production. The experiment was conducted from July until November 2010. TheStrip Plot Design was used with two factors and three replications. The first factor was reed mulch, i.e : withoutmulch, mulch thickness of 5 cm and mulch thickness of 10 cm. The second factor was Intercropping croppingpattern, i.e.: chili 100% + Cabbage Flowers 25%, chili 100% + Cabbage Flowers 50%, chili 100% + CabbageFlowers 75%. Experimental results showed that; (1 ) treatment reed thickness mulch treatment 5 and 10 cm withintercropping 100% chili + 50% and 75% Cabbage Flowers able to suppressed of total weeds growth andproduce the highest crop growth . (2) treatment reed thickness mulch of the 10 cm with intercropping 100%chili + 50% Cabbage Flowers yield of chili and cabbage Flowers production of highest interest.Key words: chili, weed, cabbage flowers, reed mulch, intercropping.
KAJIAN DAYA RACUN CUKA (ASAM ASETAT) TERHADAP PERTUMBUHAN GULMA PADA PERSIAPAN LAHAN Pujisiswanto, Hidayat
Agrin : Jurnal Penelitian Pertanian Vol 16, No 1 (2012): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2012.16.1.126

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Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi cuka (asam asetat) terhadap pertumbuhangulma pada persiapan lahan. Penelitian dilakukan di Politeknik Lampung, Lampung dari bulan Juli sampaidengan September 2011. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok Lengkapsatu faktor, yaitu : konsentrasi cuka dengan empat taraf : 0%, 5%, 10% dan 20% dengan empat ulangan. Hasilpenelitian menunjukkan bahwa (1) konsentrasi cuka 10% - 20% mampu mengendalikan pertumbuhan gulmasampai dengan 4 MSA, terlihat dari tertekannya bobot kering dan persentase penutupan gulma total. (2)konsentrasi cuka 10% - 20 % mampu mengendalikan pertumbuhan gulma daun lebar Asystasia gangética,sedangkan gulma daun lebar lain yaitu kacangan (LCC) dan Mikania micrantha mampu dikendalikan dengankonsentrasi 20% sampai dengan 4 MSA. (3) Gulma golongan rumput yaitu Digitaria longiflora tidak mampudikendalikan oleh cuka sampai 8 MSA.Kata kunci : Cuka (asam asetat), Konsentrasi, gulmaABSTRACTThe objective of this research was to think the effect concentrations of vinegar (acetic acid) on growth ofweeds at land preparation. The experiments conducted in Politeknik Lampung, Lampung from July toSeptember 2011. The research design was used Completely Randomized Design (CRD) with one factor, i.e :concentration of vinegar with four levels : 0, 5%, 10%, and 20% with four replications. The results showed that:(1) vinegar concentration of 10% - 20% are able to control weed growth to 4 MSA, seen from the suppression ofthe dry weight and percentage of total weeds. (2) vinegar concentration of 10% - 20% are able to control thegrowth of broad leaf weeds Asystasia gangética, while the other broad leaf weeds are nuts (LCC) and Mikaniamicrantha able to be controlled by the concentration of 20% up to 4 MSA. (3) Type of grass weed i.e Digitarialongiflora is not able to be controlled of vinegar to 8 MSA.Key words : Vinegar (Acetic acid), concentration, weeds
EFIKASI HERBISIDA METIL METSULFURON UNTUK MENGENDALIKAN GULMA PADA TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) MENGHASILKAN Koriyando, Virgio; Susanto, Herry; Sugiatno, Sugiatno; Pujisiswanto, Hidayat
Jurnal Agrotek Tropika Vol 2, No 3 (2014)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.051 KB) | DOI: 10.23960/jat.v2i3.2049

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Salah satu faktor yang harus diperhatikan dalam meningkatkan produksi tanaman kelapa sawit adalah faktor lingkungan terutama masalah keberadaan gulma yang dapat menekan pertumbuhan dan hasil. Aplikasi herbisida merupakan pengendalian gulma secara kimiawi dan herbisida metil metsulfuron berpotensi efektif mengendalikan gulma pada piringan tanaman kelapa sawit. Penelitian bertujuan untuk mengetahui pengaruh herbisida metil metsulfuron terhadap gulma total dan gulma dominanpada lahan tanaman kelapa sawit menghasilkan, dosis herbisida metil metsulfuron yang efektif untuk mengendalikan gulma total dan gulma dominan pada lahan tanaman kelapa sawit menghasilkan, dan perubahan komunitas gulma akibat perlakuan herbisida metil metsulfuron pada lahan tanaman kelapa sawit menghasilkan. Penelitian dilakukan di areal perkebunan kelapa sawit di Desa Mujimulyo, Natar, Lampung Selatan dan di Laboratorium Gulma, Fakultas Pertanian, Universitas Lampung, Bandar lampung. Penelitian menggunakan rancangan kelompok teracak sempurna (RKTS) yang terdiri atas 7 perlakuan yaitudosis metil metsulfuron 15,75, 21,00, 26,25, dan 31,50 g ha -1 , metil metsulfuron pembanding (20,00 g ha -1 ), penyianganmekanis, dan tanpa pengendalian (kontrol). Penelitian diulang 4 kali dan setiap satuan percobaan terdiri atas 3 piringantanaman kelapa sawit. Homogenitas ragam diuji dengan uji Bartlet dan aditivitas data diuji dengan uji Tukey. Data dianalisisragam dan perbedaan nilai tengah diuji dengan Uji BNT pada taraf nyata 5%. Hasil penelitian menunjukan bahwa aplikasiherbisida metil metsulfuron dosis 15,75 – 31,50 g ha -1 efektif mengendalikan gulma total pada 4, 8, dan 12 MSA. Herbisida metilmetsulfuron dosis 15,75 – 31,50 g ha -1 efektif mengendalikan Ageratum conyzoides dan Synedrella nodiflora pada 8 dan 12MSA, Axonopus compressus pada 12 MSA, dan Cyperus kyllingia pada 8 MSA dan terjadi perubahan komunitas gulmaakibat aplikasi herbisida metil metsulfuron.
PENINGKATAN EFEKTIVITAS CUKA DENGAN PENAMBAHAN LARUTAN BUAH LERAK TERHADAP GULMA Cyperus rotundus, Eleusine indica, DAN Synedrella nodiflora Gemilang, Muhammad Reza; Pujisiswanto, Hidayat; Sriyani, Nanik
Jurnal Agrotek Tropika Vol 5, No 2 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.408 KB) | DOI: 10.23960/jat.v5i2.1831

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Gulma merupakan tumbuhan pengganggu yang dapat menghambat pertumbuhan dan hasil produksi tanaman. Cuka dapat dimanfaatkan sebagai herbisida karena memiliki mekanisme kerja mirip paraquat dan buah lerak mengandung saponin yang diduga dapat meningkatkan efektivitas cuka. Penelitian ini bertujuan untuk 1). Menguji larutan buah lerak (Sapindus rarak) sebagai ajuvan herbisida untuk meningkatkan efektivitas cuka dalam mengendalikan gulma; 2). Mendapatkan kombinasi campuran cuka dan larutan buah lerak pada konsentrasi cuka yang lebih rendah dari 20% tanpa mengurangi efektivitas dalam mengendalikan gulma. Penelitian ini dilakukan di Laboratorium Lapang Terpadu Fakultas Pertanian Universitas Lampung pada bulan April hingga bulan Mei 2016. Penelitian ini merupakan percobaan faktorial yang disusun dalam Rancangan Acak Kelompok dengan 4 ulangan. Faktor pertama adalah cuka dengan konsentrasi 0, 5, 10, 15, dan 20%. Faktor kedua adalah konsentrasi larutan buah lerak yaitu 0, 2,5, dan 5%. Perlakuan sebanyak 15 perlakuan diulang sebanyak 4 kali dengan 3 jenisgulma sasaran sehingga diperoleh 180 satuan percobaan. Uji Beda Nyata Terkecil (BNT) pada taraf 5% digunakan untuk menguji nilai tengah antar perlakuan. Hasil penelitian menunjukkan bahwa 1). Penambahan larutan buah lerak 2,5% dan 5% kedalam cuka sebagai ajuvan mampu meningkatkan keracunan terhadap gulma C. rotundus dan E. indica pada konsentrasi cuka 15% ; 2). Kombinasi cuka dan larutan buah lerak dibawah 20% yang memiliki efektivitas yang sama dengan cuka 20% adalah 15% + 2,5% pada gulma C. rotundus dan S. nodiflora yang ditandai dengan menurunnya tingkat kehijauan daun dan bobot kering gulma.
EFIKASI HERBISIDA NABATI 1,8-CINEOLE TERHADAP GULMA PADA PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq.) MENGHASILKAN Kurniastuty, Citra Bara; Sembodo, Dad Resiworo J.; Rini, Maria Viva; Pujisiswanto, Hidayat
Jurnal Agrotek Tropika Vol 5, No 1 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.668 KB) | DOI: 10.23960/jat.v5i1.1843

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Gulma menjadi salah satu kendala yang dapat menghambat pertumbuhan tanaman kelapa sawit. Pengendalian gulma yang dilakukan adalah menggunakan herbisida nabati berbahan aktif 1,8-cineole. Penelitian ini bertujuan untuk menentukan dosisherbisida nabati 1,8-cineole yang efektif mengendalikan gulma di perkebunan kelapa sawit menghasilkan, mengetahui efektivitas herbisida nabati 1,8-cineole dibandingkan herbisida paraquat dalam mengendalikan gulma di perkebunan kelapa sawit menghasilkan, dan mengetahui pengaruh herbisida nabati 1,8-cineole terhadap tanaman kelapa sawit menghasilkan. Penelitian ini dilaksanakan di Desa Sidomukti, Kecamatan Natar, Kabupaten Lampung Selatan, dan Laboratorium Gulma Fakultas Pertanian Universitas Lampung pada bulan Februari – Mei 2016. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 9 perlakuan yaitu 1,8-cineole dengan dosis (3,0; 4,5; 6,0; 7,5; 9,0; 10,5 g/ha), herbisida paraquat dengan dosis 900 g/ha, penyiangan mekanis, dan kontrol (tanpa pengendalian) dengan 3 ulangan. Homogenitas ragam diuji dengan menggunakan uji Bartlett dan additivitas data diuji dengan uji Tukey. Perbedaan antar nilai tengah diuji menggunakan uji BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa Herbisida 1,8-cineole pada dosis 3,0 – 10,5 g/ha efektif mengendalikan gulma total, gulma golongan daun lebar, dan gulma golongan rumput sampai 8 MSA, bahkan pada dosis yang sama efektif mengendalikan gulma golongan teki sampai 12 MSA. Herbisida 1,8-cineole pada dosis 9,0 – 10,5 g/ha mampu mengendalikan gulma setara dengan tingkat pengendalian dengan herbisida paraquat 900 g/ha sampai 8 MSA. Aplikasi herbisida 1,8-cineole pada dosis 3,0 – 10,5 g/ha tidak meracuni tanaman kelapa sawit menghasilkan.