Prapto Yudono
Fakultas Pertanian, Universitas Gadjah Mada

Published : 41 Documents
Articles

Pengelompokan Genotipe Jarak Pagar Berdasarkan Ketahanannya terhadap Kekeringan pada Fase Pembibitan di Lahan Pasir Pantai Parwata, I Gusti Made Arya; Indradewa, Didik; Yudono, Prapto; Kertonegoro, Bambang Djadmo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 2 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Extension of jatropha planting on coastal sandy soil is an effort to look for an alternatif area to other soil types, this experiment is one of a series experiment aiming to classify jatropha based on their drought resistance, and to determine watering interval causing drought stress. The experiment was arranged using Split Plot Design with watering interval (once in 1, 3, 5, 7, and 9 day (s)) as main plot, and jatropha genotypes (IP-1A, IP-1M, IP-1P, IP-2A, IP-2M, IP-2P, Unggul Lokal (NTB), Gundul and Daun Kuning) as sub plot. The seeds of genotypes were planted in black polybag with coastal sandy soil media. The parameters observed were plant height, stem diameter, number of leaf, leaf width and plant dry weight, and the data collected were analyzed using Analysis of Variance, DMRT, Regrression and Cluster Analysis. The result showed that IP-1A, IP-2M, Gundul and IP-1M are the resistant genotypes, whereas Unggul Lokal, Daun Kuning, IP-2A and IP-2P are the susceptible genotypes. Once in one and three day (s) are optimum watering intervals, and once in nine days is a watering interval causing drought stress. Keywords : jatropha, drought, watering, coastal sandy soil
Correlation of Growth Parameters with Yield of Two Cassava Varieties Amarullah, Amarullah; Indradewa, Didik; Yudono, Prapto; Sunarminto, Bambang Hendro
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

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Abstract

The correlation of major growth parameters with the yield of cassava in different growth phases was investigated in 2013 and 2014. This experiment was conducted to assess the effect of two cassava varieties and the different growth phases to the yield and yield components. In experiment, the varieties as treatment were arranged in a randomized complete block design (RCBD) with three replications. Two varieties consisted of superior Adira-4 and local varieties Singgah were used. The growth parameters (plant height, stem diameter, leaf number) and yield components (number of tuber, weight per tuber and tuber yield) in early growth phase, maximum vegetative growth phase and charging tuber phase, were observed. Based on the correlation results, the growth parameters and the yield highly affected to the final outcome of cassava tubers at different growth phases. In the early growth phase, occurs high demand to assimilate with the expense of storage root. However, from the maximum vegetative phase, growth parameters began to show a significant positive contribution to the tuber weight. Weight of fresh tuber in both varieties increased at the charging of tubers phase and thereafter (enlarged bulb). The early growth phase and maximum vegetative phase might not generate a significant contribution to the final yield of cassava tuber. Making those two periods were not suitable time for optimum harvesting result, and it still depended on the variety and its allocation.
Proline Activity and Growth of Oil Palm affected by Aluminium Toxicity and Silica as Ameliorant Khoiriyah, Annisa; Putra, Eka Tarwaca Susila; Yudono, Prapto
Jurnal Ilmu Pertanian Vol 1, No 1 (2016): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

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Abstract

The research aims to investigate the effects of silica (Si) as an ameliorant on the proline compound concentration and the growth response of oil palm exposed to aluminum toxicity. The research was arranged in a complete randomized block design with 8 blocks as replications. The first factor was Al toxicity which consisted of two levels as without and with Al toxicity. Al toxicity treatment was applied by giving 300 ppm of Al concentrate along with watering activity regularly. The second factor was the application of silica which consisted of four levels as 0, 32, 64 g/plant. Proline and growth activities of leaf area, plant height, number of leaves, and dry weight were observed in the research. The data subjected to analysis of variance (ANOVA) at 5% test level. If the result of ANOVA showed significant differences among treatments, then the data would have been analyzed by Duncan’s Multiple Range Test (DMRT) at 5% test level. The results of the research provide information that Al toxicity increases proline compound in the plant tissues and decreases leaf area, plant height, number of leaves, and dry weight of Oil Palm. Applying Si at the level of 64 g/plant could increase proline concentrate and dry weight of oil palm exposed to A1 toxicity. Proline compound in the plant tissues did not have any correlation with the growth of oil palm. Thus, this case indicated that proline was a product and not a plant tolerant mechanism of Al toxicity.
Root Morphology of Eight Hybrid Oil Palms Under Iron (Fe) Toxicity Nurmalasari, Aprilia Ike; Putra, Eka Tarwaca Susila; Yudono, Prapto
Jurnal Ilmu Pertanian Vol 1, No 1 (2016): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

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Abstract

The research aims to study the change of morphology root characters of eight hybrid oil palms under iron toxicity (Fe). Field experiment done in arranged in a Randomized Complete Block Design (RCBD) two factors and three blocks as replications. The first factor was Fe concentration. It consists of two levels which are concentration 0µ.g-1 and concentration 600 µg.g-1 Fe. The second factor is the hybrid of oil palms which consists of eight hybrid oil palms as Yangambi, Avros, Langkat, PPKS 239, Simalungun, PPKS 718, PPKS 540 and Dumpy. Fe was applied by pouring FeSO4 solvent for 600 µg.g-1 500 ml.-1plant.-1day-1 on two months of plants after transplanting in the main nursery. Data were collected on root morphology and plant dry weight The data were analysis of variance (ANOVA) at 5% significanly, followed by Duncan's multiple range test (DMRT). The relationships by among variables were determined by correlation analysis. The results showed that Fe concentration 600 µg.g-1 inhibits relatively root growth rate, narrows surface area, reduces the diameter, and shrinks root volume of all hybrid oil palms tested. The slowing relatively root growth rate, narrowing of root surface area and root diameter also root volume shrinkage due to Fe stress. It was also shown that the dry weight of plants was inhibit by existing of Fe toxicity.
Permeabilitas dan Perkecambahan Benih Aren (Arenga pinnata (Wurmb.) Merr.) Widyawati, Nugraheni; Tohari, ,; Yudono, Prapto; Soemardi, Issirep
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 2 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The characteristics of seed coat delay the germination of sugar palm seeds. A research was carried out to investigate the permeability of sugar palm seeds and accelerate the germination. The research consists of four experiments with purposes: 1. to investigate the distribution of water content of sugar palm seed (RCBD Factorial between part of seed : whole seed, seed coat, endosperm and embryo under three conditions: control; soaking in water and germinate, 5 replications); 2. to investigate seed permeability (RCD, 6 soaking periods, 4 replications); 3. to investigate the content of lignin and tannin in seed (RCD, 8 seed ages, 4 replications); 4. to accelerate seed germination (RCBD, 6 treatments of scarification, 4 replication).  The results showed that the permeability of sugar palm seeds to water absorption declined with seed maturity because of the increasing in lignin and tannin content. Seed germination can be accelerated with scalding on the operculum site to increase water absorption.   Key words: Sugar palm, seeds, permeability, germination
Respon Pertumbuhan dan Hasil Tanaman Jarak Pagar (Jatropha curcas L.) terhadap Cekaman Kekeringan di Lahan Pasir Pantai pada Tahun Pertama Siklus Produksi Parwata, I Gusti Made Arya; Indradewa, Didik; Yudono, Prapto; Kertonegoro, Bambang Djadmo; Kusmarwiyah, Rukmini
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 1 (2014): JURNAL AGRONOMI INDONESIA
Publisher : Bogor Agricultural University

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Abstract

ABSTRACTDevelopment of Jatropha, an important tropical biofuel crop, to coastal sandy soil is an urgent situation due to more limited of fossil fuel in one side, and high potency of coastal sandy land that has not been utilized yet. Tolerant and sensitive genotypes of Jatropha were treated with drought stress using watering interval, and their responds on the vegetative growth and yield were studied in this reasearch. Drought stress significantly decreased all vegetative growth parameters observed, except the number of branch. Different jatropha genotypes had different number of branch, number of leaf, root surface area, total of root length, root diameter, plant dry weight, shoot root ratio and light absorption. IP-1A genotype had the highest yield, i.e 33.54 g of dry seed plant-1 (equal to 0.15 ton ha-1), in the first year.Keywords: biofuel, sand, watering
Pengaruh Waktu Pemupukan pada Dua Musim Tanam terhadap Karakter Wijen Sbr-1 dan Sbr-3 di Lahan Pasir Pantai Nurhayati, Dewi Ratna; Yudono, Prapto; Taryono, Taryono; Hanudin, Eko
Caraka Tani: Journal of Sustainable Agriculture Vol 33, No 1 (2018): April
Publisher : Universitas Sebelas Maret

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Abstract

Sesame is recognized as healthy potential oil crops because can be used to control several diseases. Sesame can grow properly in light soil structure such as sandy coastal soil, however sandy soil is considered as unfertile one and therefore environmental friendly fertilizer application based on dung manure must be studied. The research toinvestigate the influence of application times of mixed fertilizer on the growth sesame in quality growth in coastal sandy soil both at rainy and dry seasons, therefore the experiment directly to the sandy field at the sandy coastal area of Keburuhan, Purworejo, Central Java. From the first stage, it could be said that the application of mixed fertilizer between chicken manure and inorganic fertilizer increasing tochlorophyll content, net assimilation rate, root volume sesame both in rainy and dry seasons.
Effect of Acetic Acid as Pre-Emergence Herbicide on Maize Germination Pujisiswanto, Hidayat; Yudono, Prapto; Sulistyaningsih, Endang; Sunarminto, Bambang Hendro
Jurnal Penelitian Pertanian Terapan Vol 15, No 1 (2015)
Publisher : Politeknik Negeri Lampung.

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Abstract

Profitable crop production starts with a weed control program that includes pre-emergence herbicides to deliver long-lasting, residual weed control. Pre-emergence herbicides are applied to prevent the germination of weed seeds. The study was conducted to determine the effect of acetic acid as a pre-emergence herbicide on maize germination. Pots experiment was conducted on August until September 2012. The experimental design used was Completely Randomized Design (CRD) single factor in four replicates. The application of pre-emergence acetic acid at several concentration, i.e. control (no acetic acid) 0%, 10% acetic acid and 20% acetic acid. The result showed that the pre-emergence aplication at 10% and 20% of the glacial acetic acid solution lowered pH were 5,12 and 5,43 respectively at one week after application, so that inhibited maize germination. No shoots and roots were grew. This was due to the increase of electrical conductivity (EC) or electrolyte leakage caused by the high permeability of the damaged membrane of seed. The EC of control treatment was 11μS/cm g, compared to 10 and 20% treatment of acetic acid were 36 μS / cm g and 55 μS / cm g EC respectively. Increasing concentration of acetic acid caused the higher of protein content leaked, i.e. 7,95%, 7,32% and 7,03% respectively for without acetic acid treatment, 10% and 20% acetic acid. Acetic acid also inhibited respiration rate of maize seed, where the higher concentration of acetic acid produced the lower respiration rate, i.e. 31.63 mg/g/hour, 12.38 mg/g/hour and 2,75 mg/g/hour respectively for without acetic acid treatment, 10% and 20% acetic acid. Keywords : Acetic Acid, Maize (Zea mays L.), Germination, Pre-Emergence Herbicide
PERTUMBUHAN DAN HASIL DUA KULTIVAR PADI DAN BERBAGAI JARAK TANAM PADA SISTEM PENGAIRAN GENANGAN DALAM PARIT Syamsuddin, Syamsuddin; Indradewa, Didik; Sunarminto, Bambang Hendro; Yudono, Prapto
AGROLAND Vol 18, No 3 (2011)
Publisher : AGROLAND

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Abstract

The experiment was conducted on the Technical Irrigated Rice Field in D.I. Yogyakarta with soil type is Regosol. The study took place in July to December 2010. The research aim was to obtain agronomic characters and optimal planting distance that could increase the productivity of land with furrow irrigation system (FIS). The research used a factorial design (2 x 4+2) with 3 replications. Factor 1 was cultivars (K): K1 (Cimelati) and K2 (Sarinah). Factor 2 was planting distances (J): J1 (20 x 20 cm), J2(20 x 15 : 40 cm; legowo 2:1), J3(20 x 12,5 : 40 cm; legowo 2:1), and J4(20 x 12,5 : 45 cm; legowo 2:1). Controls were Cimelati and Sarinah cultivars grown in wetland rice field. The experimental results showed that the ability of plants to form seedlings in FIS was better than in the rice fields. The ability of plants to form seedlings in FIS at different planting distances was similar. Net assimilation rate (NAR) and relative growth rate (RGR) in the wetland system was better than FIS, but the leaf area index (LAI) and crop growth rate (CGR) was better in FIS. The NAR, RGR, and CGR in both systems were similar. Larger panicle and grain panicle number, 1000 grain weight and percentage of filled grain rice were found in FIS than in the rice field. The growth of rice in FIS was not affected by differences in both cultivars and planting distance. Dry harvested grain weight in FIS was lower than in the rice field. Dry harvested grain weight of Cimelati cultivar (8.04 t/ha) in FIS with planting distance of 20 x 12,5 : 40 cm (legowo 2:1) was comparable with that in the rice field (8.05 t/ha).
The Dynamics of Sesame (Sesamum indicum L.) Growth Type Firmansyah, Firmansyah; Taryono, Taryono; Yudono, Prapto
Jurnal Ilmu Pertanian Vol 15, No 2 (2012)
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

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Abstract

(Sesamum indicumL.) is one of important vegetableoil cropsin theworld. Indonesian local sesame cultivars in use today still have indeterminate growth types that cause simultaneous harvest, narrow adaptability and lower yield. Stage of the research is to see dynamics growth type of sesame due to environmental change and to find morphological and biochemical selection criteria of determinate growth cultivar. This study uses a factorial completely randomized design consisting of three replications. The first factor is six cultivars of sesame, two types of determinate growth type cultivar introduced from Turkey III Det 23, III Det 36 and four indeterminate growth type cultivars Sbr 3, Sbr 4, white local and black local. The second factor is six environments that combine various combinations of temperature and several concentrations of NaCl as salinity stress. The results showed that the environment combined heat stress temperature and salinity affect growth type of sesame. Heat stress makes longer vegetative phase and salinity stress causes black local genotype changed to determinate growth type. III det 23 and III det 36 were considered as stable determinate cultivar and best used as a parent crossing in sesame breeding program.