Jurnal Agroekoteknologi
Not a member yet
269 research outputs found
Sort by
NILAI INDEKS GLIKEMIK PADA BERBAGAI PEMANGKASAN DAUN DAN UMUR PANEN TALAS KIMPUL
Full text linkABSTRACTThe research was conducted from October 2017 to February 2018. The experimental material used in the research was Talas Kimpul. The research was factorial in the form of randomized block design. The aim of the study was to determine whether the treatment of pruning and different harvesting time the glycemic index value in Talas Kimpul. The treatments of leave pruning in this study consisted of; without pruning, pruning by leaving 4 leaves, and pruning by leaving 6 leaves. On the other hand, the harvest times treatment is on 6 months, 7 months, and 8 months. 9 respondents were tested for blood glucose. Fasting blood glucose examination results, 30, 60, 90, and 120 minutes after subjects consumed reference food (pure glucose) and test food (boiled taro from each treatment). Each treatment was given a span of 2 days to avoid bias from each food tested. The results showed that the glycemic index value of Talas Kimpul did not depend on the pruning and harvest times
PENGARUH ABU VULKANIK GUNUNG SINABUNG DAN BATUAN FOSFAT DALAM BENTUK NANOPARTIKEL TERHADAP RETENSI P, DELTA pH, DAN KEJENUHAN BASA PADA ANDISOLS CIATER, JAWA BARAT
Full text linkAndisols is a soil that develops from pyroclastic materials of volcanic eruption with the high P-Retention (85% or more). The aim of this research was to know the effect between the ameliorant of Sinabung volcanic ashes with the ameliorant of phosphate rock in nanoparticle form towards the P-retention, Delta pH and the base saturation on Ciater's Andisols, West Java. A Randomized Completely Block Design as factorial with two factors was used in this research. The first factor was the volcanic ash and the second factor was phosphate rock which consisted of four levels each amount of 0%, 2.5%, 5%, 7.5% with three replications. The result of this research showed that there was an interaction between the giving of volcanic ashes and the phosphate rock in nanoparticle form on the delta pH with the base saturation in the 1st month and also there was an independent effect on the P-retention with the base saturation in the 4th month. Combination of volcanic ashes with phosphate rock in nanoparticle form which is the dose combination of 2,5% each increased the delta pH in the 4th month incubation. The dose combination of volcanic ashes 7,5% with phosphate rock 5% increased the base saturation in the 1st month incubation. Volcanic ashes and phosphate rock each 7,5% decreased the P-Retention in the 1st month incubation.Keywords: Allophane, Andisols, Phosphate rock, Volcanic ashe
PENGARUH BAKTERI ENDOFITIK DAN Azolla pinnata TERHADAP POPULASI BAKTERI ENDOFITIK, KANDUNGAN N, DAN BOBOT KERING P PADI (Oryza sativa L.) PADA TANAH BERSALINITAS
Full text linkNitrogen deficiency is the main problem of rice growth in salt stress condition. Endophytic bacteria has an ability to enhance the number of available N in plant tissue by fixing N from the atmosphere, meanwhile Azolla pinnata has high content of N that can increase the available N in soil. The aim of this research was to know the limit of salinity stress tolerance in rice with application of endophytic bacteria and A. pinnata to enhancing the population of endophytic bacteria, N content, and dry weight of rice on soil with salinity. The research was conducted on March 2016 until March 2017 at the Green House of Ciparanje Universitas Padjadjaran. Samples were analized at the Laboratory of Soil Biology and Laboratory of Soil Fertility and Plant Nutrion, Faculty of Agriculture, Universitas Padjadjaran. The design experiment used was single factor randomized block of 8 treatments and 4 repetitions. The treatments consisted of with and without the application of endophytic bacteria and A. pinnata on soil with salinity of 0, 2, 4, and 6 mmhos cm-1. The results showed that the application of endophytic bacteria and A. pinnata gave the significant difference on the population of endophytic bacteria, N content, and dry weight of rice up to 4 mmhos cm-1.Keywords: Azolla pinnata, endophytic bacteria, rice, salinit
RESPON PERTUMBUHAN TANAMAN KRISAN POTONG (Chrysanthemum indicum L.) VARIETAS RIRIH TERHADAP DOSIS PUPUK KOTORAN SAPI DAN KONSENTRASI BIOURINE
Full text linkABSTRACTNutrients are an important factor in the cultivation of chrysanthemum cut plants.Availability of nutrients is needed during plant growth and in increasing cropproduction, therefore the addition of nutrients in the form of fertilizer is needed by cut chrysanthemum plants. The use of effective and efficient fertilizers is an indicator in the growth of chrysanthemum cut plants. The purpose of this research was to determine the optimal doses of cattle manure and biourine concentration for the growth of chrysanthemum cut plants. This research was designed with a Randomized Complete Block Design consisting of two factors. The first factor is cattle manure dose which consists of three levels, namely 2 kg per m2 (K1), 3 kg per m2 (K2), and 4 kg per m2 (K3). The second factor is the concentration of biourine which consists of 4 levels, namely 0 ml L-1 of water (B1), 250 ml L-1 of water (B2), 500 ml L-1 of water (B3), and 750 ml L-1 of water (B4). All treatments were repeated 4 times, so that a combination of 48 plots was obtained. Observation parameters included plant height, number ofleaves, stem diameter, leaf length, leaf width, chlorophyll number, flower initiation, flower diameter, flower stem diameter, and flower stalk length. The use of cattle manure at a dose of 2 kg per m2 without the addition of biourine has been able to become the optimal input for the growth of chrysanthemum cut plants
PENGARUH PUPUK ORGANIK (Azolla pinnata) TERHADAP C-ORGANIK TANAH, SERAPAN N DAN BOBOT KERING TANAMAN PADI (Oryza sativa L.) PADA TANAH DENGAN TINGKAT SALINITAS TINGGI
Full text linkUtilizing organic fertilizer Azolla pinnata is needed especially for rice commodity which planted in salin soil in coast area for increasing the efficiency of inorganic fertilizer by adding organic matters. This research was aimed to get the best combination of utilizing organic fertilizer Azolla pinnata to increase total organic carbon, nitrogen uptake, and dry weight of rice in saline soil. This research used Randomized Complete Block Design experiment which consisted of eight combinations of treatment. Those are treatment of salinity 0, 2, 4 and 6 mmhos cm-1 + without utilizing organic fertilizer Azolla pinnata and treatment of salinity 0, 2, 4, and 6 mmhos cm-1 + utilizing organic fertilizer Azolla pinnata. The result showed that utilizing organic fertilizer Azolla pinnata can reduce the negative effect from salinity which proven by increased N uptake of rice in treatment of salinity 6 mmhos cm-1.Keywords: Azolla pinnata, Rice (Oryza sativa L.), Soil with high salinity leve
PENGARUH NaCl DAN AMELIORAN ORGANIK Azolla pinnata TERHADAP N-TOTAL, pH TANAH, SERTA BOBOT KERING TANAMAN PADI (Oryza sativa L.) PADA INCEPTISOLS JATINANGOR
No full textThe high content of NaCl in soil may lead to nutrient imbalance and inhibit the Nitrogen uptake by plants. Azolla pinnata can be used as an organic ameliorant to help plant roots in absorbing nutrients and enhancing the number of available N for plants. The aim of this research was to ascertain whether Azolla pinnata as organic ameliorant gave the significant difference on the enhancement of N content of soil, pH of soil, and dry weight of rice plant on various salinity level of soil and also to find out if Azolla pinnata could suppress salinity stress at certain salinity. The experiment was conducted at the Greenhouse of Faculty of Agriculture Universitas Padjadjaran, Jatinangor and also at the Laboratory of Soil Fertility and Plant Nutrion, Departement of Soil Science and Land Resources on November 2016 until March 2017. The experimental design used was Randomized Completely Block Design with 8 treatments and 4 replications. The treatment was consisted of without the organic ameliorant Azolla pinnata, and with the application of Azolla pinnata on salinity level 0, 2, 4, 6 mmhos cm-1. The results showed that the application of NaCl and Azolla pinnata gave the significant difference on soil pH, and dry weight of plant. The application of Azolla pinnata is not able yet to suppress the rice symptom of salinity stress at 2, 4, and 6 mmhos cm-1 on the enhancement of dry weight of plant. The application of Azolla at salinity 6 mmhos cm-1 was equivalent with salinity 2 mmhos cm-1 in producing dry weight of plant.Keywords: NaCl, Organic ameliorant Azolla pinnata, Rice, Salinit
UJI KETAHANAN VARIETAS PADI LOKAL JAWA BARAT DAN RESPONNYA TERHADAP PEMBERIAN GIBERELIN PADA KONDISI CEKAMAN RENDAMAN SEBAGAI UPAYA PENINGKATAN PRODUKSI DI LAHAN RAWAN BANJIR
Full text linkThis research was aimed to examines the effect of gibberellin concentration on germination, growth and yield components of rice varieties in flood prone areas. Based on the objective, the nature of this research was verification by experimental approach in screen house and in the field. The research was conducted in the screen house and in the field of production garden of the Faculty of Agriculture of Winaya Mukti Tanjungsari - Sumedang, with a height of 850 m asl. Experiments used Randomized Completely Block Design as factorial pattern, which consisted of two factors namely four levels of gibberellin concentration and five levels of local rice varieties of West Java. Each treatment was repeated twice, then the total amount: 4 x 5 x 2 = 40 plots. Based on the results of research and discussion that had been described in the previous, it could be drawn conclusions on germination, growth and yield components of flood prone land, including: (1) there was an interaction between the various local rice varieties of West Java and the level of gibberellin concentration to the inundation stress on the ratio of root dump at age 40 day after planting, (2) the concentration of gibberellin 10 mg.L-1 gave the best results on observations for each local varieties of egypt and varieties Mareum on the root-to-dose ratio of 40 days after planting and Varieties of rice plants independently effect the number of sprouts aged day after planting, seed vigor, root length of roots, plant height 40 days after planting, and number of tillers per hump of 40 days after planting.Keywords: Rice varieties, Flooded plains, Giberelin aci
RESPONS HASIL TANAMAN TOMAT (Lycopersicum esculentum Mill.) TERHADAP PEMBERIAN BEBERAPA DOSIS KOMPOS BATANG PISANG DAN KONSENTRASI AIR CUCIAN BERAS
Full text linkABSTRACTThe research was determine yield response of tomato plants (Lycopersicum esculentum Mill.) to the giving of several doses of banana stem compost and theconcentration of rice washing water. This research was conducted in Pasir villageBinangun Waringin Kurung Serang Banten, with used Randomized CompletelyBlock Design as factorial with three repetation. The factor were examined included the compost banana stem: 20 ton ha-1 (60 g polybag-1); 25 ton ha-1 (75 g polybag-1); 30 ton ha-1 (90 g polybag-1), and a dose of rice water, namely: rice water 500 ml+500 ml of water; 750 ml rice water+250 ml of water; 1000 ml rice water. Parameters observed include: number of fruits per plant, fruit diameter and fruit weight per plant. The results showed that the dose of 25 ton ha-1 (75 g polybag-1) compost banana stem gave the best effect to the parameters of number of fruits per plant (4.85 fruits), fruit diameter (2.88 cm), and fruit weight plant-1 (87.51 g ). Provision of rice washing water concentration of 1000 ml of rice washing water tend gave better effect to parameter number of fruit plant-1 (4.24 fruit), fruit diameter (2.87 cm), and fruit weight plant-1 (85.10 g). However Between the use of compost banana stems and rice washing water interactions do not occured on the yield of tomato (Lycopersicum esculentum Mill.)
RESPONS PERTUMBUHAN TANAMAN JARAK PAGAR (Jatropha curcas L.) AKIBAT PEMBERIAN ASAM HUMAT DAN FUNGI MIKORIZA ARBUSKULA
Full text linkCastor oil plant (Jatropha curcas L.) is one of the types of plants that can be alternative energy sources replacement fuel. Plant spacing the Castor oil plant Jatropha curcas belongs to the shrubs that come from Central America, Mexico and spread to Africa and Asia. Process presses the castor bean castor oil can produce Jatropha curcas called crude Jatropha curcas oil and can be used as a substitute for kerosene for household use. This research has been carried out at the experimental Ciparanje, Faculty of Agriculture, University of Padjadjaran. In Jatinangor Sumedang reached places with an altitude of 829 m above sea level in June 2016-January 2017. The goal of the research is to obtain doses of the humic acid and dose of Asrbuskula Mycorrhiza Fungi and effect on plant growth the distance the fence. This research used a Randomized Completely Block Design as Factorial Design Patterns Group consists of two factors and three replicates. The first factor is the second factor of the humic acid and Asrbuskula Mycorrhiza Fungi. The observations were analyzed statistically using test method F. Test Duncan's Multiple Range Test done when F calculate the treatment is greater than F table 5%. The results showed that humic acid was accompanied by Asrbuskula Mycorrhiza Fungi provides high-impact on crops, the diameter of the heading, rate of growing plants, the relative rate of plants, broad leaves, and net assimilation rate. A dose of 20 g humic acid which carries 5 g Asrbuskula Mycorrhiza Fungi was the best dose for plant growth the distance the fence.Keywords: Fences, Humic acid, Mycorrhiza Arbuskula Fung
APLIKASI PUPUK HAYATI BAKTERI ENDOFITIK TERHADAP POPULASI BAKTERI ENDOFITIK, SERAPAN N DAN BOBOT KERING TANAMAN PADI (Oryza Sativa L.) PADA TANAH SALIN
No full textProductivity of rice crops (Oryza sativa) which grown in saline soils can improve due to application endophytic bacteria biofertilizer. Endophytic bacteria lives in plant tissues have an able to fix nitrogen from the air that for supply N to plant tissue more optimal. The research was aimed to know the effects of endophytic bacteria biofertilizer on enhance bacterial populations, nitrogen uptake, and dry weight of rice grown in saline soil. This research was conducted from March 2016 until February 2017 in Soil Biology Laboratory and in Laboratory of Soil Chemistry and Fertility, Soil Science Department and Land Resources, Faculty of Agriculture, Universitas Padjadjaran and Experiment Field of Ciparanje, Faculty of Agriculture, Universitas Padjadjaran with 752 meters above the sea level. This research used Randomized Completely Block Design which consisted of eight combinations: A (salinity of 0 dS m-1), B (salinity of 0 dS m-1 + biofertilizer), C (salinity of 2 dS m-1), D (salinity of 2 dS m-1 + biofertilizer), E (salinity of 4 dS m-1), F (salinity of 4 dS m-1 + biofertilizer), G (salinity of 6 dS m-1), H (salinity of 6 dS m-1 + biofertilizer). The result showed that at salinity 2 dS m-1 rice plant still survive growing on salinity stress. Salinity treatment of 2 dS m-1 + endophytic biofertilizer have enhance affect to bacterial population, N uptake and dry weight of rice compared to salinity of 4 and 6 dS m-1.Keywords: Endophytic bacteria, Rice (Oryza sativa L.), Saline soil