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INDONESIA
Jurnal Agroteknos
Published by Universitas Halu Oleo
ISSN : 20877706     EISSN : 25274074     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 1, No 1 (2011)" : 8 Documents clear
BIO-MATRICONDITIONING BENIH DENGAN RIZOBAKTERI UNTUK MENINGKATKAN MUTU FISIOLOGIS BENIH SORGUM (Sorghum bicolor L.) Sutariati, Gusti Ayu Kade; Khaeruni, Andi; Madiki, Abdul
Jurnal Agroteknos Vol 1, No 1 (2011)
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Rhizobacteria have been used for plant growth enhancement. The research was aimed on  finding  the  best  method  of  preplant  seed  treatment through  seed  invigoration plus rhizobacteria as biofertilizer to increase physiological quality of preplant sorghum   seed. The research was undertaken in Agronomy Laboratory, Agriculture Faculty, Haluoleo University, Kendari Southeast Sulawesi.    Research results showed that seed bio- matriconditioning with rhizobacteria was effective in enhancing seed quality of sorghum. The most effective treatment was the integration of seed matriconditioning using rice hull charcoal  or  ‘serbuk  bata  merah’  with  rhizobacteria  Pseudomonas  fluorescens  PG01  or Bacillus spp.CKD061. The seed treatment increased seedling growth by 120% compared to untreated seed. Based on this experiment, rhizobacteria P.fluorescens PG01 or Bacillus CKD061 integrated with   rice hull charcoal or ‘serbuk bata merah’ seed matriconditioning can be used as biological agents in improving seed quality of sorghum. Key words:   bio-matriconditioning, rhizobacteria, seed quality, sorghum
PENGARUH MIKORIZA INDIGENOUS GULMA TERHADAP KERAPATAN GULMA PADA TANAMAN JAGUNG Halim, Halim
Jurnal Agroteknos Vol 1, No 1 (2011)
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The research on the effet of mycorrhiza indigenous of weed to weed density   has carried out at Jatinangor West Java on August untill November 20008. The statistical method used in the this research was randomized block design with three replications. The research showed that important value of broads leaves at tillage are Lantana camara (L.) as 2,93 %, Mimosa pudica (L.) as 2,50 %, Ricinus communis (L.) as 2,46 %), Solanum torvum SW as 2,46 %, and Eupatorium odorata (L.) as 2,03 %. The important value of grasses are Imperata cylindrica (L.) Beauv as 1,61 % and Sacciolepis indica (L.) Chase as 1,47 %. Thus important value of sedges is Cyperus rotundus (L.) as 1,90 %. For 14 HST, important value of board leaves are Momordica charantia (L.) as 6,58 %, Ricinus communis (L.) as 3,62 %, Polygonumlongisetum De Br as 3,34 % and Ageratum conyzoides (L.) as 3,34 %. The important value of grasses are Eleusine indica (L.) Gaertn as 1,78 % dan Cynodon dactylon (L.) Pers as 1,37 %. Key words :   mycorrhiza indigenous, weed, important value, , grasses, sedges
PENGARUH STATUS HARA KALIUM TANAH TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN NENAS Safuan, La Ode; Poerwanto, Roedhy; Susila, Anas D; Sobir, Sobir
Jurnal Agroteknos Vol 1, No 1 (2011)
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The  aims  of  the  research  were:  1.  to  investigate  effect  of  potassium  status  on pineapple growth and production and N, P, K nutrient uptake , and 2. to determine the critical level of potassium for pineapple.   The research was conducted using randomized blocked design with five soil K dosages: Ksr = 0 kg K2O ha-1, Kr = 70 kg K2O ha-1, Km = 140 kg K2O ha-1, Kt = 210 kg K2O ha-1 and Kst = 280 kg K2O ha-1. The plant growth, N, P, K nutrient up take and pineapple production were affected by soil potassium status and dosage of potassium application.  The critical level of potassium for  pineapple “D ” leaf was 1.71% of dry matter. Key words:   Growth, production, nutrient status, potassium.
ANALISIS VARIABILITAS GENETIK DAN KOEFISIEN LINTAS BERBAGAI KARAKTER AGRONOMI DAN FISIOLOGI TERHADAP HASIL BIJI DARI KERAGAMAN GENETIK 54 ASESI JAGUNG ASAL INDONESIA TIMUR Boer, Dirvamena
Jurnal Agroteknos Vol 1, No 1 (2011)
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The experiment was conducted to evaluate genetic variability, heritability, genetic gain, genetic and phenotypic correlation using path-coefficient analysis for some agronomic and physiology characters of 54 accessions of maize from East Indonesia.  The experiment was  arranged in  a  randomized completely block  design  with  tree  replications using  54 accesions.   Characters observed were plant high/TTM, number of leaves/JDT, number of leaves  above  ear/JDA,  Length  of  branches  part  of  tassel/PTM, length  of  peduncle/PMA, length of ear/PTO, diameter of ear/DTO, number of kernel rows per ear/JBT, flowering time of  male  flower/UBJ,  flowering  time  of  female  flower/UBB,  maturity  time/UMT,  seed size/UBJ, leaf area index/ILD, and seed yield/BBJ.   The result of the experiment indicated that genetic variability, broadsense heritability and genetic gain for all agronomic and phisiology characters were high.  Maize seed yield improvement can be effectively done by selecting for number of leaves, maturity time and seed size. Keywords:    Genetic variability, heritability, correlation, path-coefficient analysis
POTENSI RIZOBAKTERI INDIGENOUS ULTISOL UNTUK MENGENDALIKAN PENYAKIT BUSUK BATANG PHYTOPHTHORA (Phytophthora capsici) PADA TANAMAN CABAI. Khaeruni, Andi; Sutariati, Gusti Ayu Kade; Rahman, Abdul
Jurnal Agroteknos Vol 1, No 1 (2011)
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The major problems to use the ultisol land in Southeast Sulawesi are low pH, poor nutrients  and  Fusarium  wilt  disease  suppression.      Plant  growth-promoting and bioprotecting rhizobacteria (PGPBR) is one of the few possibilities to overcome these problems. The objectives of this experiment were to evaluate the potency of ultisol indigenous rhizobacteria to control Phytophthora stem rot disease on chili pepper. Evaluation was conducted using five isolates of rhizobacteria (ST17c, ST26c, SS15b, SS16b & SS29a), as biological control agents treatments, compared to control treatment. The results indicated that application of ultisol indigenous rhizobacteria on seed and chili pepper rhizosfer significantly increased plant height and reduced disease incidence and disease severity of Phytophptora stem rot disease in chili pepper, compared to control. The best result was by the application of ST26c isolate, resulted in no disease symptoms developed during this experiment and significant increase in plant height to 32.28 centimeter at six week after planting. Key words: rizobacteria, Phytophthora capsici, Phytophthora stem rot disease
RESPON BIBIT TANAMAN LADA TERHADAP APLIKASI MIKORIZA INDIGENOUS GULMA Hasid, Rachmawati; Halim, Halim
Jurnal Agroteknos Vol 1, No 1 (2011)
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The research on the response of pepper seedlings to the application of mycorrhiza indigenous of weed has been carried out at Sindang Kasih village of Konawe Selatan district on May until September 2008. The aim of this research was to study response of pepper seedlings to the application of mycorrhiza indigenous of weed. The research used randomized complete design with six treatments and three replications. The treatments were control (M0), 10 grams mycorrhiza indigenous of weed/polybag (M1), 15 grams mycorrhiza indigenous of weed/polybag (M2), 20 grams mycorrhiza indigenous of weed/polybag (M3), 25 grams mycorrhiza indigenous of weed/polybag (M4), 30 grams mycorrhiza indigenous of weed/polybag (M5). The parameters were number of leaves, percentage of infection of mycorrhiza to pepper root and relative field mycorrhiza dependency of pepper. The research showed that the highest number of pepper leaves at the end research was M1 with 12.65 leaves, percentage of infection of mycorrhiza to pepper root was M4 with 96.67 % and the lowest relative field mycorrhiza dependency was M2 with 19.74 %. Key words:   mycorrhiza indigenous, weed, pepper, relative field myccorhiza dependency
EXAMINATION OF CHIMERIC GENETIC STRUCTURE OF T0 TRANSFORMED LUPIN SHOOTS Wijayanto, Teguh
Jurnal Agroteknos Vol 1, No 1 (2011)
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Kurang  responsifnya eksplan  terhadap  medium  invitro  dan  efisiensi  transformasi yang relatif rendah merupakan kendala umum yang dihadapi pada transformasi genetik tanaman legum.   Pada tanaman lupin, satu spesies legum, sebagian besar klon yang diperbanyak dari satu tunas transgenik (single transformation event) sering tidak mengandung gen yang ditransfer (transgene), dan menghasilkan keturunan yang tidak transgenik, walaupun awalnya plantlet tersebut terbukti transgenik. Kimera (chimerism) diduga sebagai penyebab dari penyimpangan segregasi gen (reduced transgene segregation) ini.  Penelitian ini mencoba untuk membuktikan isu kimera tersebut. Uji in-situ PCR dan uji histokemikal GUS & lokalisasi selular dari transgen (dalam hal ini gen gus) dilakukan untuk mengetahui apakah dan dimana transgen tersebut terekspresi pada tunas lupin trasngenik generasi T0  tersebut.   Uji in-situ PCR dan histokemikal GUS menunjukkan bahwa GUS umumnya terekspresi pada beberapa bagian dalam batang tunas (plantlet T0) dan tidak tersebar merata. Hasil ini memberikan bukti struktural yang penting bahwa transgen terekspresi  secara  sektorial  pada  tunas  lupin  generasi  T0.    Ini  sekaligus  membuktikan bahwa tunas lupin generasi T0  benar-benar kimera, dan menjadi penyebab penyimpangan segregasi transgen pada generasi T1.   Upaya-upaya perlu dilakukan untuk mengurangi kejadian kimera ini, sekaligus mendapatkan ekspresi gen yang solid pada tunas (plantlet) lupin (solid transformant). Key words:   Chimera, transgene segregation, in-situ PCR, GUS histochemical assay
PENINGKATAN PERTUMBUHAN Pueraria javanica YANG DIINOKULASI FUNGI MIKORIZA ARBUSKULA DAN APLIKASI VERMIKOMPOS Arif, Asrianti
Jurnal Agroteknos Vol 1, No 1 (2011)
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The increase in plant productivity can be achieved by improving the quality of marginal lands (such as dried land, stone land, and mining lands). The efforts of land improvement   include   planting   legume   plant,   application   of   organic   fertilizer   and introducing biological agent like Arbuscular Mycorrhiza Fungi (AMF). The combination of legume plant, AMF inoculation and vermicompost could be an effective method and need to be site tested. A pre-evaluation in finding the compatible AMF type to host and obtaining the best composition of vermicompost to Pueraria javanica growth has been conducted in a green house. This research was factorial experiment in CRD using two factors. The first factor was AMF inoculum type and the second factor was medium formulation. The growth factors measured were plant height, root dry weight, shoot dry weight, total dry weight and AMF propagule number. The research revealed that 20% AMF type of Glomus sp. combined with vermicompost composition treatment + 80% zeolit was the best treatment and capable of  increasing root, shoot and total plant dry weights by 377%, 90%, and 704%, respectively, compared to the control. AMF inoculum type G. etunicatum (selected) and Glomus sp. (endogenous) gave  different  responses  againts  vermicompost addition  in  which  type  G. etunicatum was more tolerant than Glomus sp (endogenous).   The best inoculum were Glomus sp, G.etunicatum and 30 % AMF type Glomus sp combined with vermicompost composition + 70% zeolit treatment, which produced propagule amount 10120 x 104,  308 x10, 77 x 104 per 100 g zeolit, respectively Key words : Pueraria javanica, Arbuscular Mycoriza fungi, vermikompost

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