Physico-chemical characteristics of non-irradiated and γ-irradiated yams cultivars (Dioscorea rotundata, Dioscorea alata) and sweet potato (Ipomoea batatas (L) Lam)

2011 ◽  
Vol 46 (6) ◽  
pp. 1186-1193 ◽  
Author(s):  
Kolawole O. Falade ◽  
Ernest Ighravwe ◽  
Sylvester S. Ikoyo
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Chemical Characteristics ◽  
Dioscorea Alata ◽  
Dioscorea Rotundata ◽  
Physico Chemical

scholarly journals Control of Sprouting of Yam (Dioscorea rotundata) and Sweet Potato (Ipomoea batatas) using African Cardamon (Aframomum danielli), Turmeric (Curcuma longa) and Clove (Syzygium aromaticum)

2017 ◽  
Vol 1 (1) ◽  
pp. 59
Author(s):  
G. O. Adegoke ◽  
A. O. Odebadeu ◽  
M. O. Afolabi
Keyword(s):  
Weight Loss ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Treatment Time ◽  
Curcuma Longa ◽  
Syzygium Aromaticum ◽  
Aqueous Extracts ◽  
Dioscorea Rotundata ◽  
Percentage Weight ◽  
The Difference

This study investigated the effects of the aqueous extracts of Aframomum danielli, Turmeric and Clove in sprouting of yam (Dioscorea rotundata) and sweet potato (Ipomoea batatas). The sliced tubers were dipped into the aqueous extracts of A. danielli, turmeric and Clove, each at concentrations of 5%, 10% and 15%. The tubers were allowed to stand in the solution for 5 and 10 minutes. Distilled water was used in the control samples. The yam slices were air dried after removal from the liquids, placed in paper boxes and incubated at room temperature (28.9 ± 4.0°C) and Relative Humidity of 44.6 ± 18.4 % for a period of six weeks (Bibah, 2014). Weight loss was determined by finding the difference between the initial and final weights and expressed as percentage weight loss. The results indicated that Turmeric treatments at different concentrations of 5%, 10% and 15% were more effective in reducing sprouting index at 5 minutes treatment time with values of 1.79%; 3.00% and 3.02% respectively. Clove treatment at 15%, 10% and 15% A. danielli treatment were more effective in controlling sprouting at 10 minutes treatment time for the yam tubers. There was no clear distinction in the effectiveness of each of aqueous extract of A. danielli, Turmeric and Clove in controlling sprouting at 5 and 10 minutes treatment time for sweet potato tubers.

Intercropping to control weeds in yam (Dioscorea rotundata) and sweet potato (Ipomoea batatas)

1969 ◽  
Vol 75 (1) ◽  
pp. 11-18
Author(s):  
Félix M. Román ◽  
Alberto Beale ◽  
Héber Irizarry
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Cropping Systems ◽  
Dioscorea Rotundata ◽  
Weed Population ◽  
Weed Growth ◽  
Tuber Production ◽  
Agricultural Experiment ◽  
Potato Yields ◽  
Made In

Monoculture and intercropping systems for yam (Dioscorea rotundata Poir) and sweet potato (Ipomoea batatas) production in two planting seasons were evaluated at the Corozal Agricultural Experiment Substation. In Experiment 1, yam cv. Guinea Blanco and sweet potato cv. Dominicana were planted the same date; and sweet potato 6 weeks before or after yam in February, April and May. In Experiment 2, the same cropping treatments were evaluated, but plantings were made in October and December 1983 and in January 1984. In this experiment Guinea Negro yam was used. In Experiment 1, sweet potato planted in monoculture or intercropped suppressed weed growth. However, the yam competition significantly reduced sweet potato yields. Although weeds grew freely in monoculture planting, yields were not significantly reduced. In Experiment 2, no significant differences were detected among cropping systems with regard to weed control. However, late plantings (December and January) reduced the weed population in both planting systems. When yam and sweet potato were intercropped during these months, the association did not affect yam production but did reduce sweet potato yields. The yam-sweet potato intercropping planting of December yielded highest for yams with 36,738 k/ha, and the highest combined yam-sweet potato tuber production with 59,014 k/ha. The sweet potato planted as a monoculture in December yielded (36,559 k/ha).

scholarly journals Produksi Inulin Berbasis Umbi-Umbian Lokal Sebagai Bahan Dasar Obat

2020 ◽  
Vol 4 (1) ◽  
pp. 14-23
Author(s):  
Isana Supiah Yosephine Louise
Keyword(s):  
Sweet Potato ◽  
Rural Community ◽  
Ipomoea Batatas ◽  
Storage Time ◽  
Raw Material ◽  
Monascus Purpureus ◽  
High Price ◽  
Dioscorea Alata ◽  
Valuable Product ◽  
Purple Sweet Potato

AbstrakInulin merupakan bahan dasar obat yang banyak terkandung dalam umbi-umbian lokal, seperti ubi kayu/singkong (Manihot esculenta), uwi (Dioscorea spp.), ubi jalar (Ipomoea batatas), dan gembili (Dioscorea esculenta L.), yang secara luas belum diupayakan untuk diproduksi secara besar-besaran. Umbi-umbian lokal umumnya hanya dijual sebagai bahan mentah yang harganya relatif murah dan tidak dapat disimpan dalam waktu yang relatif lama. Umumnya dikonsumsi dengan cara direbus, digoreng atau diolah menjadi makanan tradisional, belum diproses menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan waktu penyimpanan yang relatif lebih lama. Pada kegiatan pemberdayaan masyarakat pedesaan ini telah dilakukan penyuluhan, pemberian keterampilan, dan pendampingan masyarakat dusun Krajan Wedomartani Ngemplak Sleman untuk secara mandiri mampu mengolah umbi-umbian lokal menjadi produk tepung fermentasi, tepung non fermentasi, dan ekstrak inulin. Pada kegiatan ini bahan baku yang digunakan adalah umbi singkong, uwi ungu, dan ubi jalar ungu. Proses fermentasi umbi dilakukan menggunakan jamur monascus angka atau monascus purpureus. Ekstrak inulin dilakukan dengan menggunakan pelarut alkohol. Produk tepung fermentasi dengan bahan baku umbi singkong, uwi ungu, dan ubi jalar ungu masing-masing memiliki randemen sebesar 52%, 43%, dan 40%; sedangkan ekstrak inulin memiliki randemen sesesar 7,47%, hanya saja produk inulin belum optimum bila ditinjau dari sisi warna senyawa, masih perlu dilakukan proses lanjutan untuk memperoleh produk inulin yang sesuai standar pasar. Hasi angket menunjukkan bahwa sebagian besar peserta menyatakan kegiatan seperti ini sangat bermanfaat, dan secara umum penyajian materi oleh tim pengabdi dapat diterima dengan mudah dan jelas oleh peserta. Sebagian besar peserta menyatakan bahwa metoda penyampaian materi sesuai, artinya, secara umum metoda penyampaian materi dalam kegiatan ini dapat diterima dengan mudah oleh masyarakat sasaran. Sebagian besar peserta menyatakan bahwa kegiatan seperti ini sangat membantu membuka wawasan masyarakat desa untuk dapat mengolah umbi-umbian lokal, yang semula hanya dikonsumsi dengan direbus atau digoreng atau dijual mentah dengan harga realtif murah menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan memiliki daya simpan relatif lebih lama. Kata kunci: inulin, monascus angka, umbi-umbian lokal, membuka wawasan, masyarakat desa The Production of Tubers-Based Inulin as The Basic Ingredients of Medicine AbstractInulin is a raw material of medicine which is contained in local tubers, such as cassava (Manihotes culenta), Dioscorea spp., sweet potato (Ipomoea batatas L.), and Dioscorea esculenta L., which is not widely strived in mass production. Local tubers commonly sold as food raw material which is relatively cheap and cannot be stored for a long time. Generally, the tubers consumed by boiling, fried or processed to traditional food. It has not processed to be more valuable product, has relatively high price, and has relatively longer the storage time. In the empowerment activity of rural community, it has been conducted counseling, providing soft skill, and community assistance in Krajan, Wedomartani, Ngemplak, Sleman to independently be able producing local tubers became fermented flour, unfermented flour, and inulin extract product. In this activity, the raw material were cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato (Ipomoea batatas var Ayumurasaki). Tubers fermentation process was conducted using monascus angka or monascus purpureus mold. Inulin extract was produced using alcohol solvent. Fermented flour product from cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato have yield as respectively 52%, 43%, and 40%; meanwhile inulin extract has yield as 7.47%, although inulin product had not reach optimum point regarding on the color of compound. It still needs further process to gain standardized commercially inulin product. Questioners showed that mostly of the attendances stated the activity very useful, and generally the presentation from empowerment team can be delivered easily and clearly to the communities.  Mostly of the attendances stated that the method of presentation is suitable, which means generally the presentation method in this activity can be accepted easily by the communities. Mostly of the attendances stated that the activity is very helpful for them to gain the knowledge of local tubers processing, which was originally consumed only with boiled or fried or sold uncooked with the relatively cheap price to be more valuable product, has relatively high price, and has relatively longer the storage time  Key words: inulin, monascus angka, local tubers, empowerment, rural community

scholarly journals Beberapa sifat kimia tanah, serapan P, K, Fe, dan pertumbuhan Ubijalar ((Ipomoea batatas (L.) Lamb) akibat pemberian ekstrak krandalit, fraksi humat dan kalium pada Ultisol Warmare

Cassowary ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 35-46
Author(s):  
Sapriansyah Nusan ◽  
Ishak Musaad ◽  
Irnanda A.F. Djuuna
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Mineral Soil ◽  
Chemical Properties ◽  
Dry Weight ◽  
Pot Experiment ◽  
Chemical Characteristics ◽  
Fertilizer Treatment ◽  
Organic Fraction ◽  
The Status

The aims of this research were to study some soil chemical properties, P, K, Fe uptake and sweet potato growth as the result of Crandalitte Extract, Humat Fraction, and Potassium application on Ultisol Warmare. The pot experiment was conducted in the Screen house, Department of Soil Science Faculty of Agriculture, University of Papua Manokwari. The pot experiment has been done using Completed Randomize Design with 7 treatments and four replications , namely: A0 = no fertilizer (treatment); A1 = 100% crandalitte extract + 0% organic fraction + 0% potassium; A2 = 80% crandalitte extract + 10% organic fraction + 10% potassium; A3 = 60% crandalitte extract + 20% organic fraction +2 0% potassium; A4 = 40% crandalitte extract + 30% organic fraction + 30% potassium; A5 = 20% crandalitte extract + 40% organic fraction + 40% potassium, and; A6 = 0% crandalitte extract + 50% organic fraction + 50% potassium. The dosage of each treatment was 100-liter ha-1 (4 g Pot -1). Some soil chemical characteristics were analyzed for pH (H2O), pH (KCl), N-Total, C-organic, P-available, K-total, and Al-exchangeable. P, K, Fe concentrations. The plant growth variables were measured mainly for long steam on 5, 6, 7 and 8 weeks after planting, biomass of trubus, Data were analyzed using statistical analyses of Analysis of Variance (F Test) and DMRT test. The result showed that the application of crandalitte extract, humic fraction and potassium was significantly increased the status of P-available and H-exchangeable, but not affected significantly for other soil chemical characteristics (pH H2O, pH KCl, C-organic percentage, N-total, and Al-exchangeable). Fresh and dry weight of sweet potato trubus were also significantly affected by those application, however it was not affected significantly on long steam; wet weight and dry weight of root and also root length of sweet potato. Among the treatments, the A2 treatment (80% EFC: 10% Organic fraction: 10% Potassium) showed a better value of the status P-available, H-exchangeable and the biomass of trubus. This might be related to the characteristic of acid mineral soil that need high P fertilizer and the balance application of organic matter and potassium.

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