Baru saja dipublikasikan
Paling banyak dilihat
Efektivitas Ekstrak Metanol Daun Salam (Eugenia Polyantha) Dan Daun Jeruk Purut (Cytrus Histrix) Sebagai Antijamur Pada Pertumbuhan Fusarium Oxysporum Image
Journal article

Efektivitas Ekstrak Metanol Daun Salam (Eugenia Polyantha) Dan Daun Jeruk Purut (Cytrus Histrix) Sebagai Antijamur Pada Pertumbuhan Fusarium Oxysporum

The Effectiveness of Methanol Extract of Bay Leaf(Eugenia polyantha) and Kaffir Lime Leaf (Cytrushistrix) as Antifungal on Growth of F. oxysporumEssential oils extracted from many plants have been investigated forbotanical pesticide source. There are several commercial pesticidescontaining essential oil. Kaffir lime containing citronella is known asantifungal material. Many research showed that bay leaf has antifungal andantibacterial activity. The objective of this research was to find out theeffect of metanol extracts of bay and kaffir lime leaves on F. oxysporumgrowth. The experiment was conducted from January to February 2008 atPhytopathology Laboratory of Indonesian Medicinal and Aromatic CropsResearch Institute (IMACRI). The experiment was consisted of 3activities : (1) Test of methanol extract of bay leaf and kaffir lime leaf onvegetative growth of F. oxysporum in solid media. Fungal colony diameterwas recorded each day. (2) Test of methanol extract of bay and kaffir limeleaves on generative growth of F. oxysporum in liquid media. Conidiaproduction and hifa weight were observed. (3) Test of methanol extract ofbay and kaffir lime leaves on inhabitation of conidia germination of F.oxysporum. The germination of conidia was observed at 0, 2, 4 hours aftertreatment. Experiment was designed using completely randomized designwith three replications. The result showed that methanol extract of bay leafinhibited the growth of F. oxysporum in solid media. The highest growthinhibition was 57.16% at 5% extract. In liquid media, methanol extract ofbay leaf decreased conidia production and hifa weight significantly.Methanol extract of bay leaf inhibited conidia germination. The percentageof inhibition of conidia germination was 84.67% at 3% extract. Methanolextract of Kaffir lime leaf inhibited the growth of F. oxysporumsignificantly. The percentage of inhibition was 95.6% at 5% extract. Inliquid media, methanol extract of kaffir lime leaf decreased conidiaproduction and hifa weight at all of concentration of extract. Methanolextract of kaffir lime leaf inhibited conidia germination. The percentage ofinhibition of conidia germination was 77.00% at 3% extract.
Pengaruh Komposisi Media Terhadap Pertumbuhan Kalus Dan Kadar Tannin Dari Daun Jati Belanda (Guazuma Ulmifolia Lamk) Secara in Vitro Image
Journal article

Pengaruh Komposisi Media Terhadap Pertumbuhan Kalus Dan Kadar Tannin Dari Daun Jati Belanda (Guazuma Ulmifolia Lamk) Secara in Vitro

West Indian Elm ( Guazuma ulmifolia Lamk.) is one of potentialplant producing tannin which is useful for controlling obesity. Tannin canbe produced through in vitro and this compound could be increased bycalli culture. The medium composition for calli induction was necessary toproduce the optimal calli. The aim of this research was to obtain themedium composition for calli induction through in vitro. Young leaves ofWest Indian Elm from glass house were used as explants. Murashige andSkoog (MS) medium enriched with B vitamin group was used as basicmedium. The experiments were arranged in completely randomized designin factorial pattern with ten replications. For calli induction, variousconcentration of 2,4-D (0.1; 0.3; and 0.5 mg/l) and its combination withBenzyl Adenin of 0.1 and 0.3 mg/l were used as treatments. Parametersobserved were calli diameter, structure, colour, fresh weight andperformance during culture. Analysis of tannin was conducted by usingdried samples both (in vitro and leaves from glass house) and thenextracted. The result showed that there was interaction between 2,4-D 0.3mg/l and Benzyl Adenin 0.1 mg/l on calli diameter (28.7 mm), the biggestcalli diameter after sub culture (31.9 mm), and fresh calli weight (5.02 g)eight weeks after treatments. Tannin content obtained from all of the invitro treatments (3.72 – 4.27%) was higher than tannin from leaves(2.24%).
Karakteristik Fisiologis Ralstonia Solanacearum Penyebab Penyakit Layu Bakteri Nilam Image
Journal article

Karakteristik Fisiologis Ralstonia Solanacearum Penyebab Penyakit Layu Bakteri Nilam

Karakteristik Fisiologis Isolat Sclerotium SP. Asal Tanaman Sambiloto Image
Journal article

Karakteristik Fisiologis Isolat Sclerotium SP. Asal Tanaman Sambiloto

Disarankan Untuk Anda
Pemanfaatan Limbah Sagu sebagai Pengendalian Gulma pada Lada Perdu Image
Journal article

Pemanfaatan Limbah Sagu sebagai Pengendalian Gulma pada Lada Perdu

Limbah sagu di samping dapat dimanfaatkan sebagai sumber bahanorganik juga potensial digunakan sebagai amelioran dan herbisida nabati.Penelitian bertujuan untuk mengetahui pengaruh limbah sagu dan carapenyiangan gulma terhadap populasi gulma dan pertumbuhan ladaperdu. Penelitian dilaksanakan di Kebun Percobaan (KP) Institut PertanianBogor (IPB) dan Laboratorium Balai Penelitian Tanaman Obat danAromatik Balittro) dari bulan Mei 2003 sampai April 2004. Penelitianmenggunakan rancangan petak terbagi yang disusun secara faktorial. Carapenyiangan gulma (S) sebagai petak utama dan komposisi limbah sagu(L) sebagai anak petak. Susunan perlakuan sebagai berikut: S 1 =penyiangan bersih dan S 2 = penyiangan terbatas. Komposisi limbahsagu terdiri dari L 0 = tanpa bahan organik; L 1 = 100% limbah sagu, L 2= 100% limbah sagu, dekomposisi 1 bulan, L 3 = 100% limbah sagudekomposisi 2 bulan; L 4 = 75% limbah sagu + 25% kompos; L 5 = 75%limbah sagu + 25% kompos, dekomposisi 1 bulan; L 6 = 75% limbahsagu + 25% kompos, dekomposisi 2 bulan; L 7 = 50% limbah sagu +50% kompos; L 8 = 50% limbah sagu + 50% kompos, dekomposisi 1bulan; L 9 = 50% limbah sagu + 50% kompos, dekomposisi 2 bulan;L 10 = 25% limbah sagu + 75% kompos; L 11 = 25% limbah sagu + 75%kompos, dekomposisi 1 bulan; dan L 12 = 25% limbah sagu + 75%kompos, dekomposisi 2 bulan. Hasil penelitian menunjukkan bahwakandungan limbah sagu 75% limbah sagu + 25% kompos dekomposisi2 bulan meningkatkan pertumbuhan dan produktivitas lada perdu.Limbah sagu dengan 100% dalam bentuk segar dan dekomposisisampai 2 bulan efektif dalam menekan populasi gulma.
Baca artikel lainnya