Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal Agrotrop : Journal on Agriculture Science Buletin Udayana Mengabdi Journal of Agricultural Science and Biotechnology E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Indonesian Journal of Mathematics and Natural Sciences Advances in Tropical Biodiversity and Environmental Sciences
I Ketut Siadi
Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana, Denpasar
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Environmental Science Mathematics Veterinary

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
EKSTRAK BUNGKIL BIJI JARAK PAGAR (Jatropha curcas) SEBAGAI BIOPESTISIDA YANG EFEKTIF DENGAN PENAMBAHAN LARUTAN NaCl Siadi, K.
Jurnal MIPA Vol 35, No 1 (2012): April 2012
Publisher : Jurnal MIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pestisida alami merupakan bahan yang mudah terurai di lingkungan, sehingga tidak dikhawatirkan menimbulkan bahaya dan efek samping terhadap lingkungan. Salah satu tanaman yang dapat digunakan sebagai bahan dasar pembuatan biopestisida yaitu bungkil biji jarak pagar (Jatropha curcas). Penelitian ini dilaksanakan untuk mengetahui efektifitas kerja formula biopestisida bungkil biji jarak pagar dari limbah pengolahan industri biodiesel dengan penambahan larutan NaCl. Penelitian diawali dengan ekstraksi serbuk bungkil jarak pagar, diikuti pembuatan formula campuran ekstrak bungkil jarak pagar dengan larutan NaCl, uji fitokimia, aplikasi terhadap tanaman bayam dan uji toksisitas. Hasil uji fitokimia menunjukkan bahwa dalam ekstrak bungkil jarak pagar terdapat senyawa terpenoid yang diduga forbol ester, ditandai terbentuknya warna merah-ungu bila direaksikan dengan reagen Liebermann-Burchard. Biopestisida ekstrak bungkil jarak pagar dengan larutan NaCl 0,1% bila diaplikasikan pada tanaman bayam menunjukkan hasil yang baik yakni pada formula biopestisida: NaCl 0,1% dengan perbandingan 1:1, 2:1 dan 3:1. Uji toksisitas terhadap mencit yang dilakukan menghasilkan LD50 2000 mg/kg pada formula biopestida ekstrak bungkil jarak pagar: larutan NaCl 0,1 %  sebesar 2:1. Formula ini terbukti paling efektif dalam mengendalikan hama dan meningkatkan kesuburan tanaman bayam. Natural pesticide is a substance that is easy to decompose in the environment, so people do not concern about its dangerous effect to the environment. One of plants that can be used as materials for biopesticide manufacturing is Jatropha seed (Jatropha curcas). The study was conducted to determine the effectiveness of Jatropha seed biopesticide formula made from biodiesel industry processing waste by adding NaCl solution. The study was started by extracting Jatropha powder, then followed by creating mixture of Jatropha seed extract and NaCl solution formula, phytochemical testing, applying it to spinach and toxicity testing. The result of phytochemical testing showed that Jatropha seed extracts contain terpenoid compound which is suspected as forbol ester, because it showed red-purple color when it was reacted with Liebermann-Burchard reagent. The result of Biopesticides Jatropha extract with 0.1% NaCl solution applied to spinach showed good result on biopesticide formula: NaCl 0.1% with a ratio of 1:1, 2:1 and 3:1. Toxicity testing on mice showed that it produced LD50 2000 mg / kg in the formula of biopestida Jatropha extract: NaCl solution 0.1% of 2:1. This proves that this formula is the most effective formula to control pests and increase fertility of spinach.
EKSTRAK BUNGKIL BIJI JARAK PAGAR (Jatropha curcas) SEBAGAI BIOPESTISIDA YANG EFEKTIF DENGAN PENAMBAHAN LARUTAN NaCl Siadi, K.
Indonesian Journal of Mathematics and Natural Sciences Vol 35, No 1 (2012): April 2012
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pestisida alami merupakan bahan yang mudah terurai di lingkungan, sehingga tidak dikhawatirkan menimbulkan bahaya dan efek samping terhadap lingkungan. Salah satu tanaman yang dapat digunakan sebagai bahan dasar pembuatan biopestisida yaitu bungkil biji jarak pagar (Jatropha curcas). Penelitian ini dilaksanakan untuk mengetahui efektifitas kerja formula biopestisida bungkil biji jarak pagar dari limbah pengolahan industri biodiesel dengan penambahan larutan NaCl. Penelitian diawali dengan ekstraksi serbuk bungkil jarak pagar, diikuti pembuatan formula campuran ekstrak bungkil jarak pagar dengan larutan NaCl, uji fitokimia, aplikasi terhadap tanaman bayam dan uji toksisitas. Hasil uji fitokimia menunjukkan bahwa dalam ekstrak bungkil jarak pagar terdapat senyawa terpenoid yang diduga forbol ester, ditandai terbentuknya warna merah-ungu bila direaksikan dengan reagen Liebermann-Burchard. Biopestisida ekstrak bungkil jarak pagar dengan larutan NaCl 0,1% bila diaplikasikan pada tanaman bayam menunjukkan hasil yang baik yakni pada formula biopestisida: NaCl 0,1% dengan perbandingan 1:1, 2:1 dan 3:1. Uji toksisitas terhadap mencit yang dilakukan menghasilkan LD50 2000 mg/kg pada formula biopestida ekstrak bungkil jarak pagar: larutan NaCl 0,1 %  sebesar 2:1. Formula ini terbukti paling efektif dalam mengendalikan hama dan meningkatkan kesuburan tanaman bayam. Natural pesticide is a substance that is easy to decompose in the environment, so people do not concern about its dangerous effect to the environment. One of plants that can be used as materials for biopesticide manufacturing is Jatropha seed (Jatropha curcas). The study was conducted to determine the effectiveness of Jatropha seed biopesticide formula made from biodiesel industry processing waste by adding NaCl solution. The study was started by extracting Jatropha powder, then followed by creating mixture of Jatropha seed extract and NaCl solution formula, phytochemical testing, applying it to spinach and toxicity testing. The result of phytochemical testing showed that Jatropha seed extracts contain terpenoid compound which is suspected as forbol ester, because it showed red-purple color when it was reacted with Liebermann-Burchard reagent. The result of Biopesticides Jatropha extract with 0.1% NaCl solution applied to spinach showed good result on biopesticide formula: NaCl 0.1% with a ratio of 1:1, 2:1 and 3:1. Toxicity testing on mice showed that it produced LD50 2000 mg / kg in the formula of biopestida Jatropha extract: NaCl solution 0.1% of 2:1. This proves that this formula is the most effective formula to control pests and increase fertility of spinach.
PELATIHAN PENGENDALIAN PENYAKIT BUSUK BERAIR PADA BUAH SALAK DI DESA DUDA TIMUR, KECAMATAN SELAT KABUPATEN KARANGASEM W. Adiartayasa; I.N. Wijaya; I.G.N. Bagus; I.M.M. Adnyana; I.K. Siadi
Buletin Udayana Mengabdi Vol 17 No 3 (2018): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (424.807 KB) | DOI: 10.24843/BUM.2018.v17.i03.p03

Abstract

Salak (Salacca edulis Reinw.) merupakan tanaman asli Indonesia dan buah salak mempunyai nilai yang cukup tinggi dan disukai oleh konsumen Indonesia. Salak Bali mempunyai pasar yang cukup baik di kota besar di Jawa seperti Surabaya, Solo, Semarang dan Jakarta. Desa Sibetan dan Duda Timur merupakan penghasil buah salak yang terbanyak. Umur simpan buah salak Bali berkisar antara 6-7 hari pada suhu penyimpanan 29oC, selama penyimpan bobot buah salak mengalami penurunan 20 persen. Kekerasan daging buah salak cenderung mengalami penurunan ditandai dengan makin melunaknya daging buah. Kerusakan buah salak dapat terjadi sejak berada pada pertanaman, waktu panen, pasca panen sampai ke pemasaran berkisar 40%. Kerusakan buah salak dapat terjadi akibat luka, memar, pencoklatan, buah pecah kulit, dan penyakit busuk berair. Menurut Adiartayasa (2004) kerusakan buah salak disebabkan oleh jamur yaitu Ceratocystis sp. dan Botryodiplodia sp. yang menyebabkan kulit buah salak menjadi berwarna coklat kehitaman dan berair, kulit buah mudah pecah dan terkelupas, serta daging buah busuk dan berair serta berwarna coklat. Lebih lanjut ekstrak daun sirih yang diperoleh dari solven metanol 5-15% memiliki daya hambatan yang tinggi terhadap pertumbuhan Botrydiplodia sp. pada media PDA. Sedang ekstrak daun sirih mempunyai kemampuan yang lebih rendah dalam menghambat pertumbuhan Botrydiplodia sp. Pengendalian penyakit Busuk Berair pada buah salak dilaksanakan pada Kelompok Tani dan Ternak Tabu Nandini di Desa Duda Timur, Kecamatan Selat, Kabupaten Karangasem pada hari Senen, 14 Agustus 2017. Kegiatan pelatihan dilaksanakan pada Wantilan Kelompok Tani dan Ternak Tabu Nandini dan pemaparan pelatihan dibantu dengan alat bantu LCD serta dihadiri oleh 35 orang petani dan 6 orang dosen. Peserta mampu mengidentifikasi dan menunjukkan gejala penyakit Busuk Berair pada buah salak. Lebih dari 100 persen peserta dapat menunjukkan gejala penyakit Busuk Berair pada buah salak. Pengendalian penyakit Busuk Berair pada buah salak dalam penyimpanan dan pemasaran dapat menggunakan ekstrak daun sirih.
PELATIHAN BUDIDAYA TANAMAN JERUK BEBAS PENYAKIT CVPD DI DESA KERTA GIANYAR W. Adiartayasa; I.N. Wijaya; I. G.P. Wirawan; N.N. Darmiati; I K. Siadi
Buletin Udayana Mengabdi Vol 16 No 1 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (204.123 KB)

Abstract

Penyakit CVPD (citrus vein phloem degeneration) merupakan penyakit penting pada tanaman jeruk. Penyakit menyebar melalui bibit tanaman jeruk yang telah terinfeksi CVPD dan ditularkan melalui serangga vektor D. citri. Tanaman jeruk yang terserang CVPD memperlihatkan gejala daun menguning atau klorosis, warna tulang daun tetap hijau, ukuran daun menjadi kecil dan daun menjadi tebal dan kaku. Hasil pengamatan tanaman secara morfologi di Kecamatan Kintamani didapatkan 10 jenis tanaman jeruk yaitu jeruk Siam, Selayar, Besakih, Tejakula, Manis, Nipis, Purut, Lemo, dan jeruk Bali. Gejala penyakit CVPD pada masing-masing jenis tanaman jeruk mempunyai gejala klorosis bervariasi. Pelatihan ini bertujuan untuk menambah pengetahuan budidaya tanaman jeruk bebas penyakit CVPD. Pelatihan ini telah dilaksanakan di Kantor Desa Kerta, pada hari Rabu tanggal 10 Agustus 2016. Kegiatan ini diikuti oleh 20 orang petani dan lima orang dosen Fakultas Pertanian Unud. Hasil evaluasi yang didapatkan 15 orang menguasi 90 persen materi, dan 5 orang menguasai 60 persen materi. Petani mengharapkan adanya pelatihan dan pendampingan yang berkelanjutan mengenai budidaya tanaman jeruk.
PENGARUH DRY HEAT TREATMENT TERHADAP DAYA SIMPAN BENIH CABAI RAWIT (Capsicum frutescens L.) I Gusti Ngurah Raka; Anak Agung Made Astiningsih; I Dewa Nyoman Nyana; I Ketut Siadi
Journal of Agricultural Science and Biotechnology Volume 1, No 1, Tahun 2012
Publisher : Journal of Agricultural Science and Biotechnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (204.585 KB)

Abstract

The aims of this experiment were to compare the shelf life of chili pepper seeds given dry heat treatment (DHT) and non dry heat treatment (NT). This experiment was conducted in Laboratory of Seed Technology Faculty of Agriculture, Udayana University. The study consisted of two experiments that attempt to use lots of chili seeds treated with dry heat treatment (DHT) and experimental use a lot of chili seeds without dry heat treatment (NT). This experiment uses a randomized completely design (RCD) with 10 replications.  Each type of chili pepper seeds tested each power shelf with 10 replications. Storage treatment performed at room temperature, which consists of non-storage (T0), storage for 2 weeks (T2), storage for 4 weeks (T4), storage for 6 weeks (T6) and storage for 8 weeks (T8). Thus, for each lots of chili pepper there are 50 experimental units. Treatment until 8 weeks of storage time did not affect the viability and vigor of pepper seeds either DHT or NT with value up to 80%, so they do not affect seed longivity.  The dry heat treatment (DHT) showed the values of seed and seedling vigor are higher compared to that of no dry heat treatment (NT).
Uji Efektifitas Bakteri Antagonis Untuk Pengendalian Penyakit Layu pada Tanaman Stroberi SHAH KANIGARA ASADDIARI; GUSTI NNGURAH ALIT SUSANTA WIRYA; I KETUT SIADI; I MADE SUDANA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.1, Januari 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.195 KB)

Abstract

Effectiveness Test of Antagonistic Bacteria to Control Strawberry Wilt Disease Strawberry (Fragaria sp.) Is a herbaceous fruit plant that was first discovered in Chile, USA. Bali Province is one of the provinces that produce strawberries inIndonesia. The development center for strawberry commodity in the Province of Baliis in the Bedugul area, that is in the Village of Pancasari, District of Sukasada andVillage of Candikuning, District of Tabanan. Since 2016, there have been quiteharmful disorders in strawberry plants in Bali due to wilting caused by the fungusFusarium oxysporum. Research on the effectiveness test of antagonistic bacteria tocontrol strawberry wilt disease was conducted in January 2019 to August 2019. Thepurpose of this study was to determine the ability of antagonistic bacteria to controlthe growth of wilt disease in strawberries in vivo. The method used is the isolation ofbacteria and pathogens, application of bacterial and pathogenic isolates, andobservation. The results of this study are that the P3 bacterial isolate is able to controlthe most effective pathogens with a disease percentage of 20 %.
Pengaruh Dry Heat Treatment Dan Pengokeran Terhadap Pertumbuhan Dan Kesehatan Bibit Cabai Rawit (Capsicum Frutescens L.) NI KADEK AYU WIDAYANTHI; I GUSTI NGURAH RAKA; I KETUT SIADI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.1, Januari 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.49 KB)

Abstract

Effect of Dry Heat Treatment and Container on Seeds Growth and health of Chilli Pepper (Capsicum frutescens L.)The dry heat treatment (DHT) technology had improve that it can inactivation viruses disease on seed, so it have to implement in seedling for production of healty seeds. This study was aims to determine of influense of DHT and container agains chilli papper of seed growth which healty and resistence against environment condition in fields. The design used in this study was completely randomized design with 4 treatments and 6 replications. The treatments were combined clod DHT, DHT combination of polybags, non-dry heat treatment (NDHT) clod or the ability of local farmers, and the NDHT combination polybags. The variables measured in this study include, germination, chlorophyll content, number of leaves, plant height, leaf area, root length, fresh weight and oven dry weight. The results showed that clod DHT most effective in producing healthy chilli papper seeds and able to adapt in the field. While NDHT was not effective in producing healthy chilli seeds and not able to adapt in the field.
Pengaruh Penggunaan Mulsa Plastik Terhadap Kelimpahan Serangga Myzus persicae pada Tanaman Cabai Rawit (Capsicum frutescens L.) KADEK DWI UTAMA; I GUSTI NGURAH BAGUS; I KETUT SIADI; DEWA NYOMAN NYANA; GEDE SUASTIKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.4, No.1, Januari 2015
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.17 KB)

Abstract

ABSTRACT Effect of Plastic Mulch to Myzuspersicae Insect Abundance in Plant Cayenne Pepper (Capsicum frutescens L.)   Cayenne Pepperis one of theimportantvegetablesgrowncommerciallyinthe tropicsandoccupythe mostextensiveacreageamongother vegetablesin Indonesian. There are fivespeciesarecommonly cultivatedchiliCapsicumannuum(red pepper), C.frutescensL(cayenne pepper), andC.chinensis, C.bacctum, C.pubescens(chili gendot). However,theeconomicpotentialis a typeof chiliC.annuumandC.frutescensL. The purposeofthis study wastoknow theeffect of the useof plasticmulchoninsectabundanceMyzus persicaeoncropsandcayenne pepper. There arethree treatmentsbeing testedareplantingchiliusingblackplasticmulch(MH), a silverplasticmulch(MP) andplantingwithoutmulchorcontrol(K).The results showedthat theuse ofblack plasticmulchandsilverplasticmulchcannotpreventaphids andwhiteflyinchillicrop, however the presence ofblackplasticmulchandsilverplasticmulchcanreduceboththe insectpopulation. Key words :Cayenne Pepper,Myzus persicae, plastic mulch
Daya Simpan Benih Tomat (Lycopersicum esculentum mill.) Hasil Beberapa Teknik Ekstraksi I NYOMAN RAGANATHA; I GUSTI NGURAH RAKA; I GEDE KETUT SIADI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.3, Juli 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (72.456 KB)

Abstract

AbstractTomato Seed (Lycopersicum esculentum Mill.) Storability of Some Extraction Techniques Results                 Shelf life tomato seeds produced by different seed extraction techniques studied using completely randomized design ( CRD ) with three treatments of seed extraction technique and nine replicates. Three seed extraction techniques used are: extraction technique with 2 % HCl, washed with water extraction techniques, and extraction techniques with immersion in water for 24 hours. The seeds are dried until the moisture content ranges from 5 %, then stored at room temperature. Observations before storage include: seed moisture content, the amount of seed moisture content of 5 % per 5 g of seeds, seed purity, germination and speed of germination. Observations during storage include: seed moisture content,  germination and speed of germination. The results showed that the extraction technique of soaking seeds with 2 % HCl able to produce seeds with the lowest percentage of impurities so that the absorption of moisture during the storage period was also the lowest. Extraction technique of soaking seeds with 2 % HCl able to maintain the viability of the seed germination above 80 % until the 12 -week storage period at speeds high enough to germinate. While the seeds of other extraction techniques which have a shorter shelf life. Further research on the storage technique that is able to maintain the viability and vigor of tomato seeds for a longer shelf life.   Key words : Tomato seeds, extraction, seed storage, viability, vigor
Pengaruh Umur Panen terhadap Hasil dan Mutu Benih Kacang Panjang (Vignasinensis L.) NI KADEK DWIK PRADNYAWATI; I GUSTI NGURAH RAKA; I KETUT SIADI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.1, Januari 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (87.365 KB)

Abstract

The Effect of Harvesting Age on Seeds Production and Seeds Quality of Long Bean Seeds (Vigna sinensis L.) This research was conducted in January 2018 until May 2018 in Subak Sedang, Angantaka Village, Abiansemal District, Badung, Bali. This research aimedto determine the effects of time of harvesting after flowering on Long Bean seed physiological maturity and quality. This research in a one factor research with 3 differences of age of harvesting. The three age of harvesting : P1 (23 days after flowering), P2 (26 days after flowering), and P3 (29 days after flowering). Theresearch used a randomized block design (RBD) with 9 replications. Observations variables were made on number of pods, number of pithy seeds, weight of seeds per hectare, weight of 1000 seeds, viability and vigor. The results showed that the treatments of age of harvesting P2 (26 DAF) had an effect on the seed production and quality.
Co-Authors ANAK AGUNG MADE ASTININGSIH GEDE SUASTIKA GEDE SUASTIKA GEDE SUASTIKA Gusti Ngurah Alit Susanta Wirya I Dewa Nyoman Nyana I GEDE PUTU WIRAWAN I Gusti Ngurah Bagus I GUSTI NGURAH BAGUS PRANATA PUTRA I GUSTI NGURAH RAKA I GUSTI NGURAH WISNU PURWADI I KADE DARMAWAN I MADE SUDANA I MADE SUDANA I NYOMAN RAGANATHA I NYOMAN WIJAYA I WAYAN SUKADA I.G.N. Bagus I.M.M. Adnyana I.N. Wijaya K.A. Yuliadhi KADEK DWI UTAMA Khamdan Khalimi NI KADEK AYU WIDAYANTHI NI KADEK DWIK PRADNYAWATI Ni Made Puspawati NI NENGAH DARMIATI NI NYOMAN DWI RESPITA NINGSIH NYOMAN AYU TRISNA ARI UTAMI ROBERTO BOBHOPE ARUAN SHAH KANIGARA ASADDIARI TRISNA AGUNG PHABIOLA WAYAN ADIARTAYASA