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EVALUASI KESESUAIAN LAHAN UNTUK PENGEMBANGAN TANAMAN KOPI ROBUSTA (Coffea canephora) BERDASARKAN ANALISIS DATA IKLIM MENGGUNAKAN APLIKASI SISTEM INFORMASI GEOGRAFI Kandari, Aminudin Mane; Safuan, La Ode; Amsil, LM
Jurnal Agroteknos Vol 3, No 1 (2013)
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The aim of the study was to determine the climate type, spatially climate distribution and climate suitability class for robusta coffee crop in the district of Buton. The research was conducted in March to Agsutus 2013 by using Thiessen polygon approach through GIS spatial analyst and climate unit obtained from overlay climate elements, namely temperature, precipitation, humidity, and dry months. Research found that, in Buton, climate type according to the classification Schmidth - Fergusson climate type C in the coverage area of the station rainfall Lawele and Betoambari, and the type climate in the region of Kapontori and Kaisabu rainfall stations based on. Thiessen polygon, the widest distribution was 4 months dry climate, i.e. : 124.257,29 hectares or 59,16 % of the rainfall stations Kapontori, Kaisabu, and Betoambari. While the widest climatology element (temperature, humidity, radiation, and evaporation) were in the climatology station Kapontori : 123.240,42 ha or 58,68 % of the total study area. Actual climatic suitability classes in the study site for the coffee plants were class S2 ( quite appropriate ) area of 69.581,56 hectares or 61,46 % and marginally suitable ( S3 ) area of 43.632,03 hectares or 38,54 % with the toughest obstacles were temperature (t) and humidity (w3). While the potential climatic suitability remained on climate spesific class S2 (quite appropriate) and S3 (marginally suitable). With the results of the evaluation of the climatic suitability , coffee plants can be developed in the research area. Keywords: climate, coffee, land suitability

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

PENGENDALIAN WERENG PUCUK METE (Sanurus indecora) TANAMAN JAMBU METE DENGAN CENDAWAN Synnematium sp. DI LABORATORIUM Rahayu, Mallarangeng; Nurmas, Andi; Asniah, Asniah
Jurnal Agroteknos Vol 1, No 2 (2011)
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Pest is one of the constraints causing the decrease in the productivity of plants. One of the pests known as the most potential in causing the lost of cashew nut yield is Sanurus indecora. Generally, pest control still relies on the use of pesticides, while the other control methods such as biological control have not been applied optimally. The research of isolation, the effect of media and the use of Synnematium sp. to control S. indecora had been carried out from July to November, 2010. The objectives of this research were to know the pathogenic fungi infecting S. indecora in the field and the suitable media for their mass rearing, and to know the pathogenicity of Synnematium sp. on S. indecora. Test of the effects of media on the growth of Synnematium sp. consisted of five treatments and five replicates. Five kinds of media as treatment i.e: (1) PDA; (2) rice; (3) corn; (4) rice straw and (5) sago were arranged in complete randomized design. Test of the effects of spore concentrations of Synnematium sp. on mortality of S. indecora was conducted by using complete randomized design with five treatments and five replicates. Five concentrations of suspension as treatments were: control; 0.025 gml-1; 0.05 gml-1; 0.1 gml-1 and 0.2 gml-1. The results showed that the pathogenic fungus isolated from field infected S. indecora was Synnematium sp. The second experiment showed that the growth medium containing Rice Straw gave the best growth of Synnematium sp. colonies among the other treatments and 0.1 gml-1 of Synnematium sp. mycelium resulted in the highest mortality of S. indecora (57,5%) at 5 days after application. Key word: Cashew, Sanurus indecora, Synnematium sp.

KLASIFIKASI GENOTIP JAGUNG LOKAL ASAL KABUPATEN WAKATOBI DAN KABUPATEN BOMBANA BERDASARKAN KARAKTER FENOTIPNYA Safuan, La Ode; Hadini, Hamirul
Jurnal Agroteknos Vol 2, No 3 (2012)
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The aims of the research were : (1) as resources of morfology data base of local corn of Southeast Sulawesi, and (2) to Classify local corn of Southeast Sulawesi based on fenotypic characters. The research was carried out at Poasia Vilage, District Rahandouna, Kendari, Southeast Sulawesi, from June to September 2011. The study was arranged on Randomized Block Desing (RBD), with 3 replicates. The treatment was local corn varieties. Variabel measured were: cob height (cm) plant height (cm), leaf number per plant, stem diameter (mm), cob length (cm), cob diametter (mm), row number on the cob, seed number on the cob, seed number on the row, seed weight per cob, weight of 100 seed, production per hectar. Data were analysed using ANOVA, multivariat PCA and Cluster Analysis with SAS Software. Result of the Research showed that : (1) analysis of variance, Principal Component Analysis, and cluster analysis showed consistent grouping based on stem and leaf component, cob component, seed component, and production component, and (2) most of corn collection (30 cultivars) had moderate production capability (± 3 tons/ha), 11 cultivars had low production (1.76 to 2.48 tons/ha), and only 4 cultivars (AWT-06, BMB-02, BMB-03 and BMB-04) had high production and moderate age (± 90 days), reaching 4.14 to 4.75 tons/ha. Key Words : genotipe, local corn, caracter, clasification

HUBUNGAN KEKERABATAN AKSESI PISANG KEPOK (Musa paradisiaca Formatypica) DI KABUPATEN MUNA BERDASARKAN KARAKTER MORFOLOGI DAN PENANDA RAPD Wijayanto, Teguh; Boer, Dirvamena; Ente, La
Jurnal Agroteknos Vol 3, No 3 (2013)
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Twenty-four accessions that belong to four groups of kepok banana in Muna Regency have been analyzed for their genetic diversity based on morphological characters (qualitative and quantitative characters), and a few accessions based on RAPD markers. This study aimed to determine the genetic diversity and phylogenetic relationship of accessions of kepok bananas based on 52 qualitative and 12 quantitative morphological characteristics and DNA characteristics. Results of clustering analysis showed the euclidian values ranged between 0.50 to 1.00 for the qualitative data, 0.01 to 0.50 for quantitative data, and 0.83 to 0.88 for DNA profile data. Combined qualitative and quantitative data had similarity coefficient ranged from 0.00 to 2.50. Dendogram of each character produced 2 main groups. The main group 1 formed subgroups. Although the qualitative and quantitative characters resulted in different accession groupings, the combined data analysis of quantitative and qualitative data showed that kepok banana in Muna regency was classified into 4 sub groups namely banana Manuru, Bugisi, Jiwaka and Manuru Lakabu. Keywords: cluster analysis, kepok banana, qualitative and quantitative characters, morphology, RAPD markers.

RESPON KETAHANAN BERBAGAI VARIETAS TOMAT TERHADAP PENYAKIT LAYU BAKTERI (Ralstonia solanacearum) Adriani, Adriani; Rahman, Abdul; Gusnawaty, HS; Khaeruni, Andi
Jurnal Agroteknos Vol 2, No 2 (2012)
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The study was aimed to know the resistance response of some tomato varities to bacterial wilt disease (Ralstonia solanacearum). The study was arranged in a completely randomized design (CRD) with six tomato variety treatmens, namely : Permata, Cosmonot, Idola, Gress, Ratna, and a local Muna variety. Each treatment had three replicates of six plants. The resistance response observed were : the latent period, disease incidence, disease severity, and plant height. The response was observed weekly until 7 weeks after inoculation. The results showed that Cosmonot variety was resistant to bacterial wilt disease, without any disease incedence occured and the disease severity was only 6,66%. Whereas the Local Muna variety as well as Permata, Gress, and Idola were susceptible to bacterial wilt disease. On the other hand, Ratna variety showed slight tolerant response. Keywords : bacterial wilt, Ralstonia solanacearum, resistance reaction, tomato variety

PEMANFAATAN TEKNOLOGI MOLECULAR BREEDING DALAM PEMULIAAN KETAHANAN TANAMAN TERHADAP HAMA DAN PENYAKIT Lukman, Rudi; Afifuddin, Ahmad; Hoerussalam, Hoerussalam
Jurnal Agroteknos Vol 3, No 2 (2013)
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Application of gene for gene hypothesis in breeding resistance to pests and disease should pay attention to genes and gene avirulen resistance of pathogens. The second aspect of this exploration can be facilitated by molecular breeding technology. In addition, molecular marking can also be used to incorporate some resistance genes in an individual plant (gene pyramiding), a markup to the needs of cross-back (Marker Assisted Backcrossing), as well as experimental support for the detection of seed borne diseases. Rapid progress in the field of genomics has revealed some interesting phenomena about the genetics of microbes such as pathogenic effector, studies the genetic identity of an equality and diversity of microbial isolates that have not been explored. Better understanding of the mechanisms of pathogenicity and pathogen interaction between plants and will speed up the process of breeding for resistant plants. Keywords: Molecular Breeding, variability of pathogens, gene resistance

PENGARUH PERUBAHAN PENGGUNAAN LAHAN TERHADAP KONDISI HIDROLOGI DAS KONAWEHA HULU PROVINSI SULAWESI TENGGARA Baco, La; Sinukaban, Naik; Purwanto, Yanuar J; Sanim, Bunasor; Tarigan, Suria Darma
Jurnal Agroteknos Vol 1, No 3 (2011)
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ABSTRACT Phenomena of depleting of water resources and increasing water demand have been occurring in Konaweha watershed. Combine with other conditions, Konaweha watershed have been categorized as priority watershed in Southeast Sulawesi Province. Land use change is presumed to influence hydrology conditions such as the increasing maximum discharge in rainy season, decreasing minimum discharge in dry season and also runoff coefficient increased in rainy season. The objective of this research was to evaluate the effects of land use changes on hydrology conditions such as maximum discharge, minimum discharge and runoff cpeficient. This research was conducted at Konaweha watershed for 10 months from June 2009 to March 2010. The result of this research showed that forest, swamp, plantation and bush area tended to decline exponentially year by year due to population growth. During 1991 to 2010 forest decresed from 66,6 % in 1991 to 48,3 % in 2010. At the same time, plantation, mix garden and bush increased 26,0 % to 39,7 %, 3,0 % to 5,0 %, and 1,7 % to 3,1 % from the total of the watershed area. The decline of forest area have significantly decreased minimum discharge of Konaweha River in dry season from 40 m3/second in 1991 to 24 m3/second in 2010. At the same time, maximum discharge increased from 246 m3/second to 284 m3/second, and runoff coefficient increased from 31,4% to 48,3 %. Key words: watershed, land use change, discharge, runoff coeficient

PROSPEK PENERAPAN BIOTEKNOLOGI DALAM PEMANFAATAN DAN PENGEMBANGAN BIODIVERSITAS PADI LOKAL SULAWESI TENGGARA Wijayanto, Teguh
Jurnal Agroteknos Vol 3, No 1 (2013)
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Biodiversity is high value genetic resources required for the good of human being. Globally, biodiversity has been degraded into a danger level. Identification of problems, alternative solutions to protect, to conserve, and to utilize the biodiversity is a primary priority. The utilization of local rice cultivars, as a source of germplasm for rice breeding programs must get special attentions to protect the germplasm from vanishing. Biotechnology or genetic engineering technology provides an alternative way and a short cut in manipulating and producing improved plant varieties. Different kinds of methods can be used to genetically engineer plant species. Since 1980s and ever since, many achievements and improvements have been made by scientists around the world in the area of genetic engineering, including genetic improvement of rice crops. As an example, scientists have engineered transgenic rice crops that contain pro-vitamin A in the endosperm. Pro-vitamin A is a substance that does not naturally occur in rice, but is urgently required to prefend human’s eye blindness. Another example, recently a group of scientist has developed super- rice strain that defies triple whammy of stresses (drought, salty-soils, and lack of fertilizer) simultaneously. Keywords: Biodiversity, biotechnology, genetic improvement, and local rice cultivars

MORFOLOGI DAN KARAKTERISTIK TANAH DI PUGERAN, YOGYAKARTA Resman, Resman
Jurnal Agroteknos Vol 1, No 2 (2011)
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ABSTRACT The research was conducted in the Pugeran village, Yogyakarta in 2006. The aims of this research were to know the morphology and soil characteristic. Research findings showed that the soil had many alluvial materials with different sizes (granular, rough and rather rough). It was caused the activity of Merapi Mountain’s cold lava that was brought by river flow. Observation and laboratory analysis indicated that some soil characteristics were soil color between 10 YR 2/2 and 10 YR 6/2, soil texture geluhan sand, pH (H20) 5,41-5,68, pH (KCl) 4,95-5,54, pH (NaF) 8,62-9,48 and organic materials 4,11%-9,44%. The soil was dominated by brown and black colors, caused by the high content of organic materials in the inceptisol and entisol. The soil texture” geluhan sand” was caused by the soil development and establishment processes that were not quite intensive. The difference between pH (KCl) and pH (H2O) at all horizons in the profile had a negative value, with an interval of -0.15 to -1.35. The negative value of the pH difference indicated that the soil in the observed area was dominated by negative content. pH (NaF) was decreased by the increase of ”jeluk tanah”. This was caused by the cleansing processes of iron and aluminum amorf in each soil horizon. Organic materials on the top horizon were higher than the other horizons. This was because the top horizon received many organic materials coming from decomposed died plants and animals from higher areas.Keyword: Morphology, alluvial material, soil characteristic

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Kota kendari,

Sulawesi tenggara

INDONESIA