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Fatardho Zudri
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INDONESIA
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
ISSN : 20852916     EISSN : 23373652     DOI : -
Aims and Scope Aims Indonesian of Journal Agronomy (Jurnal Agronomi Indonesia), the official journal of the Indonesian Society for Agronomy, publishes primary research paper, review article, policy analysis and research notes and preliminary results in all areas of agronomy. Manuscripts could be written either in English or in Indonesia. Scope Indonesian of Journal Agronomy (Jurnal Agronomi Indonesia) covers agronomy in broad sense including plant production, genetic and plant breeding, plant physiology, plant ecology, plant biotechnology, modeling, seed science and technology and weeds science on food, horticulture, plantation, and forage crops.
Articles 971 Documents
Kesesuaian Galur-Galur Harapan Kedelai untuk Tumpangsari Jagung + Kedelai Sundari, Titik; Mutmaidah, dan Siti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 46 No. 1 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.878 KB) | DOI: 10.24831/jai.v46i1.14880

Abstract

Intercropping is one way of increasing land productivity. The research was aimed to determine the suitability of soybean promising lines for maize + soybean intercropping based on land productivity assessed by land equivalent ratio (LER). The research was conducted at Kendalpayak Station Research, Malang, in February to May 2016, using factorial randomized block design, repeated three times. The first factor was cropping system (monoculture and intercropping), the second factor was 55 soybean genotypes. Spacing for maize in the intercropping system was 2.2 m x 0.5 m x 0.2 m, and for soybean was 0.35 m x 0.10 m. In monoculture, spacing for maize was 0.75 m x 0.25 m and for soybean was 0.35 m x 0.10 m. The results showed there was five genotypes suitable for intercropping of maize + soybean based LER value, ie G//IT7-3, M0706//MI196-3, M0706//MI197-4, M0706//MI199-1, and M0706//MI199-2, with LER value of more than 1. Intercropping of maize with these soybean lines, gives a higher land productivity than monoculture.Keywords: Glycine max (L.) Merrill genotype, monoculture, land equivalent ratio, Zea mays
Peran Serangga sebagai Vektor Penyakit Karat Puru pada Sengon (Albizia falcataria L. Fosberg) Triyogo, Ananto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.997 KB) | DOI: 10.24831/jai.v40i1.14939

Abstract

Sengon (Albizia falcataria L. Fosberg) forest plantations of community in Wonosobo District, Central Java wereattacked by gall rust disease. The objective of this research was to investigate the role of insects as a vector of gall rustdisease. The attack intensity was measured in the different ages of tree stand (1, 2, 3, 4, and 6 year old) with randomizedcomplete block design (RCBD) consisting of 3 blocks, 3 replications, and 3 sampling plots. The role of insect as a vectorwas tested using two different approaches: observation on the spores in the adult insect integument and artificial investationof insect containing spores on the healthy seedlings. The result of this research showed that the one year old of sengon hadhighest disease intensity (95.5%) and lowest disease incidence (56.96%). The identification showed that the insect belongsto Lepidoptera (Family Heliozelidae) completing the metamorphosis in the gall. Spores were found in the integument ofLepidoptera (Family Heliozelidae) at the average of 2.8 x 104 spore μL-1 insect-1. Artificial innoculation on healthy seedlingdid not show the infection symptoms by Uromycladium tepperianum until 5 weeks after innoculation.
Keragaan Hasil Jarak Pagar (Jatropha curcas L.) pada Berbagai Umur Pemangkasan Yield of Jatropha curcas L. at Different Pruning Time Santoso, Bambang Budi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.271 KB) | DOI: 10.24831/jai.v40i1.14940

Abstract

Seed and oil production of physic nut (Jatropha curcas) is the function of planting material, growing condition, and alsocanopy architecture maintenance. The objective of the research was to determine the effect of pruning time on yield of physicnut. An experiment was conducted from November 2007 to November 2010 in North Lombok, West Nusa Tenggara using WestLombok genotype. The experimental design was randomized block design with three replications. There were four treatmentsi.e. a) without pruning, b) pruning at planting time, c) pruning of 1-year old trees at dormance period (after harvesting), andd) pruning of 2-years old trees at dormancy period (after harvesting). Results showed that development and maintenance ofphysic nut canopy is one of important agronomic practices to obtain high seed production. The best time for pruning during3-years production cycle was at the end of harvest of 1-year old trees which could yield more than 4 tonnes seed ha-1 .
Genetic variations of Amorphophallus variabilis Blume (Araceae) in Java using AFLP Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.373 KB) | DOI: 10.24831/jai.v40i1.14941

Abstract

Amorphophallus variabilis Blume, a member of Araceae, is a native tuber crop in Java, Madura and Kangean Islands,Indonesia. The plant showed high variations in morphology. However, genetic variations at molecular level have not beenwell studied. Amplified fragment length polymorphism (AFLP) was carried out using 8 primers combination of EcoRI andMseI on 78 accessions collected from 28 sites in Java, Indonesia. Results showed that AFLP markers able to generatepolymorphism among accessions. A total of 220 polymorphisms were found. The differences among accessions at the geneticlevel were high, and 5 clusters were constructed. Grouping was independent of geographical origin, similar to clustering ofmorphological characteristic of flowers as in the previous report. Accessions from one site composed of one to four differentcluster groups, showed that variation in single site was observed. Regarding conservation program of the A. variabilis innatural population, it is reasonable to protect one bigger site rather than many small sites, but it should be recommended tomaintain conservation areas in several districts. Further study on population structure should be carried out to explain suchvariability.
In Vitro Shoot Formation on Sugarcane (Saccharum officinarum L.) Callus as Affected by Benzyladenine Concentrations Hapsoro, Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.957 KB) | DOI: 10.24831/jai.v40i1.14942

Abstract

In vitro regeneration of sugarcane (Saccharum officinarum L.) clones can support breeding program of sugarcane. Thisresearch was conducted to study the effect of benzyladenine on in vitro shoot formation from sugarcane callus. Leafrolls werecultured for 8 weeks on callus induction medium containing MS salts, 30 g L-1 sucrose, 150 ml L-1 coconut water, 100 mg L-1myo-inositol, 0.1 mg L-1 thiamine-HCl, 0.5 mg L-1 pyridoxine-HCl, 0.5 mg L-1 nicotinic acid, 2 mg L-1 glycine, and 3 mg L-12,4-D. Callus was then subjected to different concentrations of benzyladenine (BA) (0, 0.5, 1, 2, and 2.5 mg L-1) containedin MS media. The experiment showed that after 8 weeks in culture 2 and 2.5 mg L-1 BA led to the highest percentage of shootformation (100%). The experiment also showed that addition of BA caused an increase in percentage of shoot formation,number of shoot per callus clumps, and average shoot length. In the range of 0-2.5 mg L-1, the higher the concentrationsof BA the more shoots and the longer shoots were produced. Highest number of shoots was recorded at BA 2.5 mg L-1(36.4 shoots per callus clump) and highest average shoot length was obtained at 2 and 2.5 mg L-1 BA, i.e. 2.25 and 2.3 cmrespectively. The shoot formation system was then applied to 12 sugarcane genotypes, resulting in statistically differentresponse and producing substantial number of shoots, ranging from 29 to 41.33 shoots per clump.Keywords: In vitro, sugarcane, leafrolls, benzyladenine, shoot formation
Karakter Morfologi dan Kimia Kultivar Pamelo (Citrus maxima (Burm.) Merr.) Berbiji dan Tanpa Biji Rahayu, Arifah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.041 KB) | DOI: 10.24831/jai.v40i1.14943

Abstract

The objective of this study was to evaluate morphological and chemical characteristics of seeded and seedless pummelofruit. The study was carried out during April 2009 to July 2010. The pummelo fruits were harvested from the productioncenter of Sumedang, Pati, Kudus, Magetan, Bireun (Aceh) and Pangkep (South Sulawesi). Some of seeded cultivars havespherical and ellipsoid form, while the seedless one shown pyriform shape. The edible portion of the fruits (juice vesicles)mainly affected by peel thickness and fruit shape. The edible portion of seedless cultivars (57.22%) were not sigificantlydifferent with seeded (57.07%) and potentially seedless cultivars (59.35%). Generally fruit taste of seedless cultivars weresweet to sweet-bitter, meanwhile seeded and potentially seedless pummelo cultivars have sour-sweet. Pummelo juice tastewas affected by TSS (total soluble solids), TA (titratable acidity), TSS/TA ratio and naringin content. Seedless pummelocultivars have higher pH, TSS, TSS/TA ratio, vitamin C and naringin, but lower in TA content than seeded and potentiallyseedless fruit juice. ‘Jawa 1’ and ‘Bali Merah 2’ pummelos can be further developed as seedless superior cultivars.Keywords: fruit shape, edible portion, TSS/TA, naringin, vitamin C
Pengaruh Pengairan Separuh Daerah Akar terhadap Efisiensi Penggunaan Air dan Produksi Kedelai (Glycine max L.) pada Musim Kemarau Bahrun, Andi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.12 KB) | DOI: 10.24831/jai.v40i1.14944

Abstract

A new method of irrigation was designed for increasing water use efficiency (WUE) and yield of field grown soybeanduring dry season. This experiment consisted of four treatments , namely (1) the whole root zone system was irrigated with4 L m-2; (2) the partial root zone system was irrigated with 4 L m-2; (3) the partial root zone system was irrigated with 3 Lm-2; and (4) the partial root zone system was irrigated with 2 L m-2. Partial root zone irrigation treatments were done bydaily watering one side between two plants row while the other side was allowed to dry and irrigation was shifted to the dryside while the wet side was allowed to dry every 7 days irrigation interval, respectively. The experiment was designed as arandomized complete block design with four replications and a 2.6 m x 2.4 m plot size. The results showed that the partialroot zone irrigation treatment maintained growth, biomass, nodule, relative leaf water content, relative leaf chlorophyllcontent, leaf nitrogen content and yield at the level of fully irrigated treatment and increased leaf ABA content and water useefficiency, but the effect depended on volume of water applied. Partial root zone irrigation with 2 L m-2 and 3 L m-2 irrigationdecreased yield by 2.97% and 16.91%, respectively, however, those treatments increased water use efficiency by 29.97% and23.63%, respectively, compared to those with fully irrigated plots.Keywords: ABA, irrigation, soybean, root zone, water use efficiency
Penurunan Viabilitas Benih Padi (Oryza sativa L.) melalui Beberapa Metode Pengusangan Cepat Belo, Simão Margono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.644 KB) | DOI: 10.24831/jai.v40i1.14948

Abstract

Availability of seed lots with different viabilities is very important as the material for invigoration studies. Acceleratedor rapid aging methods is expected to serve seeds with different viabilities for those studies. The objective of this study was toobtain efficient seeds rapid aging method of rice seeds. The study consisted of three experiments i.e. rapid aging with ethanolgas, soaking seed in liquid ethanol (96%) and exposing seeds to 41 oC temperature and ± 100% relative humidity. Eachexperiment was arranged in a randomized block design with single factor that was length of aging with three replications.There were eight rice varieties used in this study, i. e. three varieties of upland rice, two verieties of lowland rice, and threevarieties of swamp rice. The results showed that the physical aging method could not produce reliable data due to fungusinfection on the treated seed. It was found that generally 60% and 50% viabilities of rice seed could be obtain by ethanol gastreatment for 4.9 and 5.3 hours, as well as by liquid ethanol for 4.0 and 4.4 minutes, respectively. Rapid aging method withliquid ethanol was the fastest and simplest method for decreasing seed viability of rice.Keywords: Ethanol, rapid aging, invigoration, seed viability
Keragaman Waktu Tanam Tanaman Padi di Pulau Kalimantan Runtunuwu, Eleonora
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.723 KB) | DOI: 10.24831/jai.v40i1.14949

Abstract

Rice planting time varied among farming sites. This research was aimed to study the variation in planting time especiallyin rainy season in Kalimantan. ‘Planting time’ was deterimined using assumption as the time when 8% of paddy fields ina sub district had been planted. Analysis was done by using mean ten-days of planting area of each sub-district during theperiod of 2000 to 2009 that was obtained from Statistics Indonesia. The result showed that the farmers in Kalimantan startedplanting rice during the first and second ten-days of September each year. Peak time of rice planting varied among provinces,i.e., on October II/III (West Kalimantan), January I/II and June II/III (East Kalimantan), and March III/April I (South andCentral Kalimantan). Data from this research could be used to calculate planting management at national level.Keywords: paddy crop, planting area, planting time, rain fall
Tingkat Produksi Ratun berdasarkan Tinggi Pemotongan Batang Padi Sawah Saat Panen ,, Susilawati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.564 KB) | DOI: 10.24831/jai.v40i1.14950

Abstract

The objectives of the study was to determine the effect of cutting height of main crop on the yield of rice ratoon, and toselect genotypes with high productivity on tidal swamp land. The method used was a factorial randomized block design withthree replications. The first factor was cutting height of 10 cm, 20 cm and 30 cm from soil surface. The second factor was fivegenotypes selected from previous study, namely Cimelati, Hipa-5, Rokan, IPB106-7-47-DJ-1 and IPB106-F-8-1. The resultsshowed that combination of genotypes and cutting height affected ratoon yield. Cutting height of 20 cm increased the numberof filled grain in almost all genotypes, increased growth rate of ratoon to 1.5 cm day-1 and increased growth uniformity ofratoon of Cimelati, Hipa-5 and Rokan geontypes, with production 3.0 ton ha-1, 2.8 ton ha-1 and 2.2 ton ha-1, equal with 57.2%,60.1%, 52.7%, of the main crop respectively. Cutting height of 10 cm above soil surface showed the best results for IPB106-7-47-DJ-1 and IPB106-F-8-1 genotypes, with the highest yield of ratoon 2.1 ton ha-1 and 1.5 ton ha-1, equal with 45.8% and35.4% of the main crop respectively.Keywords: cutting height, ratoon, yield

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