scholarly journals Effect of Vine Length and Leaf Removal on Growth and Yield of Sweet Potato [Ipomoea batatas (L.)] in the Wet Middleveld of Eswatini

2021 ◽  
pp. 74-82
Author(s):  
N. Mkhatshwa ◽  
M. P. Mabuza ◽  
N. S. Zubuko
Keyword(s):  
Sweet Potato ◽  
Crop Production ◽  
Ipomoea Batatas ◽  
Agricultural Research ◽  
Block Design ◽  
Growth And Yield ◽  
Leaf Removal ◽  
Sweet Potatoes ◽  
White Variety ◽  
Research Activities

Sweet potato (Ipomoea batatas L.) is an economically important food crop in Eswatini. Since its introduction, numerous agronomic research activities were carried out in agricultural research centers, non-governmental organizations, and universities. However, information on the correct vine length for planting to improve sweet potato root yield in Eswatini is scanty. Therefore, this study aimed at helping farmers with the correct vine length to be used for improved growth and yield of sweet potatoes. A field experiment was conducted at the Luyengo campus, crop production farm during the 2019/2020 crops season. It was laid in a Randomized Complete Block Design (RCBD) in a factorial arrangement with three replicates. The treatments were vines planted with or without leaves and different vine lengths; 25 cm, 30 cm, and 35 cm. Kenya white variety was used. Data were collected on growth and yield parameters. Results showed that leaf removal yielded significantly (P<0.05) lower than non-leaf removal. This may be attributed to delayed photosynthetic activity in the former.  The Vine length had no significant effect on yield. It is concluded that vines with leaves be used as planting material, and the length of vines to be used for planting should be 25 to 30 cm.

scholarly journals EFFECT OF GYPSUM ON EARLY GROWTH AND YIELD OF SWEET POTATO.

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1078a-1078
Author(s):  
E. Niyonsaba ◽  
E. G. Rhoden ◽  
P. K. Biswas ◽  
G.W. Carver
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Dry Matter ◽  
Block Design ◽  
Early Growth ◽  
Growth And Yield ◽  
Root Weight ◽  
Storage Root ◽  
Root Yield ◽  
And Storage

A study was conducted to assess the effects of gypsum on the early growth and storage root yield of sweet potato (Ipomoea batatas) cvs `Jewel', `Goergia Jet' and `TI-155'. Three rates of gypsum were applied (1.03, 2.06 and 3.09 tons/acre). These represented half, recommended and 1.5 recommended levels. The experiment was a randomized complete block design with a split plot arrangement of treatment. Leaf area, total dry matter, leaf dry matter and stat-age root weight were recorded at 30-day intervals. Plants receiving half the recommended levels of gypsum produced the highest total storage root dry matter (0.306 t/a) and the highest leaf dry matter (0.116 t/a). Although a positive relationship exists between leaf dry matter and storage root yield between 90 and 120 days, there was no such relationship between those parameters either at 30 and 60 days or 60 and 90 days after transplanting.

scholarly journals Skrining Golongan Senyawa Kimia dan Pengujian Aktivitas Antioksidan Ekstrak Ubijalar (Ipomoea batatas (L.)Lam.) Varietas Lokal di Distrik Skanto Kabupaten Keerom Provinsi Papua

2020 ◽  
Vol 12 (2) ◽  
pp. 85-92
Author(s):  
Yuliana H. Rumsarwir ◽  
Linus Y. Chrystomo ◽  
Maklon Warpur
Keyword(s):  
Sweet Potato ◽  
Potato Variety ◽  
Ipomoea Batatas ◽  
Agricultural Research ◽  
Food Supplement ◽  
Native Plant ◽  
Phytochemical Screening ◽  
Sweet Potatoes ◽  
Local Varieties ◽  
Purple Sweet Potato

Sweet potato (Ipomoea batatas) is native plant comes from the American continent. It began to spread throughout the world, especially in the tropical countries in the 16th century. Papua Province is one of the regions with the largest area of harvested sweetpotato in Indonesia, therefore there is a high chance to develop food independence in Papua. Because of the Papuan people are accustomed consuming non-rice food. The study was conducted in the Biology Laboratory and the Pharmacy laboratory of MIPA Faculty Cenderawasih University and also the supporting Laboratory of The Papua Agricultural Research and Development Center (Balitbangtan). The purpose of  this research is to test the quality of flour of Keerom sweet potato varieties. Method for flour of sweet potato quality testing were using phytochemical screening  to determine the chemical compound group and using antioxidant test with the DPPH (1-diphenyl-2-picrylhydrazyl) method.  The results of the description of the Skanto District Keerom sweet potatoes in the field  were three (3) local varieties including Weayuken (purple sweet potato), Musanaken (yellow sweet potato) and Hiho (white sweet potato). The result of phytochemical  screening show that the purple sweet potato variety has more chemical compounds consist of tannins, quinones, flavonoids, terpenoids and alkaloids compared to white sweet potato consist of alkaloids only and yellow sweet potato consist of tannins, flavonoids, terpenoids and alkaloids. The result of antioxidant activity tests to flour extract ethanol  has IC50values of 299.82 ppm (purple sweet potato), 301.18 (yellow sweet potato), 1027.98 ppm (white sweet potato) respectively. So can be conclude that the purple sweet potato variety is the best. It was suggested for further research to isolate bioactive compounds and test antioxidants to other varieties in other centers areas of sweetpotato culture which have potential to develop for food, supplement and tradisional drugs.Key words: Sweet potato; local varieties; flour quality; phytochemical screening; antioxidant test

scholarly journals Pengaruh Pengaturan Komposisi Media Tanam Organik Terhadap Pertumbuhan Dan Hasil Tanaman Ubi Jalar ( Ipomoea batatas L.) Dengan Sistem Tabilampot

2020 ◽  
Vol 4 (2) ◽  
pp. 10
Author(s):  
Mohamad Ghufron Mardiyanto ◽  
Siti Muslikah ◽  
N Nurhidayati
Keyword(s):  
Sweet Potato ◽  
Rice Husk ◽  
Agricultural Land ◽  
Block Design ◽  
Growth And Yield ◽  
High Yield ◽  
Cow Manure ◽  
Sweet Potatoes ◽  
Growing Media ◽  
Research Results

Sweet potatoes are an alternative source of carbohydrates that have high nutritional content. Development of sweet potato cultivation methods needs to be done to overcome the decrease of productive agricultural land due to land conversion. This study aimed to test the effect of differences in the composition of the growing media on the growth, yield, and quality of sweet potato. This study was a pot experiment using a Randomized Block Design (RBD) with 7 treatments and 5 replications. The types of treatments tested were P0: 100% soil + inorganic fertilizer; P1: 50% soil + 50% cow manure; P2: soil 50% + vermicompost 50%; P3: soil 50% + biochar rice husk 25%, cow manure 25%, P4: soil 50% + biochar rice husk 25% + vermicompost 25%, P5: soil 50% + cocopeat 25% + cow manure 25%, P6: soil 50% + cocopeat 25% + vermicompost 25%. The research results showed that the composition of the growing medium significantly affected plant growth and yield. The results of the statistical analysis showed that the treatments of P4 and P6 gave the highest growth, while the high yield of fresh weight of tubers per pot were found in the treatments P1, P2, P3, and P4 by 165.59 g, 143.38 g, 171.56 g, and 144.80 g, respectively. The highest number of tubers was found in treatment P6 by 7.66 tubers. The highest yield of dry matter was also found in treatments P1, P2, P3, and P4  by 59.91 g, 51.73 g, 59.02 g, and 48.59 g, respectively. Based on the research results, it can be recommended that the cultivation of sweet potato plants in pots can be carried out using porous growing media in a container that is sufficient and available balanced nutrients for the development of plant tubers.Keywords: Vermicompost, composition of growing media, Sweet Potatoes, Yield, Quality 

scholarly journals PENGARUH PENAMBAHAN TOP SOIL INCEPTISOL DAN KOMPOS PADA TAILING AMALGAMASI TERHADAP PANJANG SULUR, DIAMETER SULUR DAN JUMLAH CABANG TANAMAN UBI JALAR (Ipomoea batatas L.)

2020 ◽  
Vol 8 (1) ◽  
pp. 161-168
Author(s):  
Indra Herliana ◽  
Pujawati Suryatmana ◽  
Reginawanti Hindersah ◽  
Rhazista Noviardi
Keyword(s):  
Organic Matter ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Sweet Potatoes ◽  
Vegetative Phase ◽  
Randomized Block Design ◽  
Top Soil ◽  
Two Factors ◽  
Number Of Branches

Tailings are waste generated from the processing of gold ore. The tailings in Kertajaya Village, Sukabumi are generally dumped into a pond or garden which is then used by the community to grow crops. The characteristics of the tailings, which contain low organic matter, microorganism activity, CEC and essential nutrients, make it necessary to improve their condition. This study aimed to determine the effect of adding top soil and compost to the tailings on the growth of sweet potatoes in the vegetative phase. This experiment used a factorial randomized block design with two factors, namely a top soil-tailing ratio of 3 levels (70: 30% w/w; 50: 50% w/w; and 30: 70% w/w) and a compost dose of 4. level (without compost (control); 10 t ha-1; 20 t ha-1; and 30 t ha-1) with 3 replications. The results showed that the combination of the addition of top soil ratios and the dose of compost to the tailings had no effect on the addition of tendrils length, tendril diameter and number of sweet potato branches during the vegetative phase. The addition of 70% top soil independently on the tailings had an effect on the highest increase in tendril length, tendril diameter and number of branches of sweet potato. Meanwhile, the application of compost dosage of 30 t ha-1 had the highest effect on the number of branches of sweet potato.

scholarly journals Farmers’ Preference, Yield, and GGE-Biplot Analysis-Based Evaluation of Four Sweet Potato (Ipomoea batatas L.) Varieties Grown in Multiple Environments

2021 ◽  
Vol 13 (7) ◽  
pp. 3730
Author(s):  
Abdullah Al Mahmud ◽  
Mohamed M. Hassan ◽  
Md Jahangir Alam ◽  
Md Samim Hossain Molla ◽  
Md Akkas Ali ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Agricultural Research ◽  
Block Design ◽  
First Year ◽  
Gge Biplot ◽  
Root Yield ◽  
Potato Varieties ◽  
Biplot Analysis ◽  
Set Up

The study aimed to select high-yielding, farmers-preferred quality sweet potato varieties that are suitable to grow in various environmental conditions in Bangladesh. In this context, four popular sweet potato varieties (viz., ‘BARI Mistialu-8′, ‘BARI Mistialu-12′, ‘BARI Mistialu-14′, and ‘BARI Mistialu-15′) were used in the study. These varieties were released by Bangladesh Agricultural Research Institute (BARI). In the first season (2018–2019), these varieties were evaluated at nine locations, and in the second season (2019–2020), the same varieties were tested further, but only in three locations. The trial was set up in a randomized complete block design and repeated three times. After two years of observation, it was found that the fresh root yield was varied significantly due to the environment (E), genotypes (G), and their (G × E) interaction (p ≤ 0.01) by using genotype and genotype x environment (GGE) biplot analysis. The E and G × E interaction effects were found to the greater than the genotypes effect solely. In the first year, three varieties, namely ‘BARI Mistialu-8′, ‘BARI Mistialu-12′ and ‘BARI Mistialu-14′, were identified as balanced and comparatively higher in yield in nine locations. These three varieties also showed a similar trend with respect to root yield in tested three locations in the second year. Among the four varieties, ‘BARI Mistialu-12′ was found to be the highest root yielder, followed by ‘BARI Mistialu-8′ and ‘BARI Mistialu-14′. Across the locations, these varieties showed 57.89%, 61.50% and 44.30% higher yield than the local check cultivar. Therefore, these three varieties may be recommended as the best varieties of sweet potato throughout the country.

scholarly journals Performance of improved sweetpotato (Ipomoea batatas L.) cultivars under different soil types of Samoa

2017 ◽  
Vol 35 (1) ◽  
pp. 1
Author(s):  
Taniela K. Siose ◽  
Danilo F. Guinto
Keyword(s):  
Crop Production ◽  
Ipomoea Batatas ◽  
Sandy Loam ◽  
Block Design ◽  
Growth And Yield ◽  
Soil Types ◽  
Silty Clay ◽  
Storage Root ◽  
Root Yield ◽  
And Storage

There is need to diversify crop production in Samoa which currently depends mainly on taro crop, that has proved to be susceptible to fungus and other diseases, to as safeguard against risks of crop failures and adapt to climatic changes. The potential of introducing sweetpotato as a second staple food in Samoa is explored in this study. The study analyses the suitability of sweetpotato cultivars in Samoan agro-environment and major soil types. For this purpose a twenty week pot experiment was conducted to investigate the performance of three improved sweetpotato cultivars (IB/PR/12, IB/PR/13 and IB/PH/03) on four different types of soils in Samoa (Savaia calcareous sandy loam, Matafa’a red acidic, Faleula silty clay and Saleimoa silty clay) in a factorial arrangement of treatments in randomised complete block design with three replications. Results revealed that soil type had a significant effect on vine growth, and storage root yield with the best yield obtained in the silty clay soils having high K content. Retarded plant growth observed under the acidic soil having low K content resulted in lowest storage root yield. A significant varietal difference was recorded in sweetpotato growth and yield. IB/PH/03 was inferior in vine length, but produced comparatively highest number of vines per plant, and storage root yield attesting its adaptability in all the four tested soil types of Samoa and has potentiality to be promoted for wider adoption. A follow-up field study is needed to verify our preliminary results under pot culture on different soil types of Samoa.

scholarly journals Effect of Arenga Palm [Arenga pinnata (WRMB)MERR.] Liquid on the Growth and Yield of Rice

2019 ◽  
pp. 1-7
Author(s):  
Lukman .
Keyword(s):  
Crop Production ◽  
Agricultural Research ◽  
Block Design ◽  
Organic Fertilizer ◽  
Alcoholic Beverages ◽  
Growth And Yield ◽  
Brown Sugar ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Experimental Treatments

Arenga palm is a liquid obtained from palm plant stem [Arenga pinnata (Wurmb). Merr)] this liquid is used as an ingredient for brown sugar or alcoholic beverages, this liquid is then mixed with some organic ingredients through fermentation method. The result of laboratory analysis shows that the fermentation contained N, P, K, and IAA and GA3 hormones that were used as experimental fertilizer (Liquid Organic fertilizer arenga palm). This research aims to determine the effectiveness of the dosage of liquid organic fertilizer to the growth and yield of rice field plants. This research used a randomized block design consisting of 3 (three) replications and 10 doses so that there were 30 experimental treatments. The study was carried out at the Agricultural Research Institute of Sidondo Palu in Central Sulawesi in March to June 2017. The analysis used was the analysis of single factor variance with the Honest Significant Difference test (BNJ). The results of the analysis shows that the dose of arenga palm 25.75 L.ha-1 for plant growth aged 15 days after planting (HST), 28 HST and 43 HST affects significantly (P <0.001) to an average plant height of 49.3 cm, 6.51 cm and 86 cm, and the number of productive tillers is 15.23 stems. Cluster-1. Likewise, the results of crop production shows that the use of a dose of 25.75 L. ha-1 is significantly different (P <0.001 harvested dry rice yield (GKP) 7.99 tons. ha-1.

scholarly journals Determination of Fertilizer Doses of Sweet potato (Ipomoea batatas L.) “Rancing”

2018 ◽  
Vol 5 (2) ◽  
pp. 55-63
Author(s):  
Ayu Puspita Ningrum ◽  
Suwarto Suwarto ◽  
Asep Setiawan
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Maximum Yield ◽  
Relative Yield ◽  
Growth And Yield ◽  
Quadratic Model ◽  
Fertilizer Response ◽  
Fertilization Program ◽  
Nutrient Response

Nitrogen, phosphorus, and potasium availability are the most thresholding factors for maximum growth and yield. The tuber yield of sweet potato varies depending on growing area therefore a fertilization program, especially in the type and the dose of the fertilizers, is required. This research was conducted in the Pasir Muncang experimental farm at Gadog, Bogor, West Java, Indonesia. The study site is located ±500 meters above sea levels, 6°39’31.90” south latitude and 106°52’7.77” east longitude. The experiment was started in May to September 2017. Multi nutrient response method was used for this study, and the interpretation of the results was used to develop fertilizer recommendations using single-nutrient quadratic model. The recommendation was determined using N, P2O5, K2O fertilizer response curve, where the first recommendation was calculated from the maximum relative yield,and the second, third, and fourth recommendation were determined from N, P2O5, K2O threshold. Each treatment for N, P and K was evaluated with different level of fertilizer dose using a randomized complete block design with three replications. The fertilizer doses were 50, 100, 150 and 200% from reference (100% N = 100 kg N ha-1, 100% P = 75 kg P2O5 ha-1, dan 100% K = 100 kg K2O ha-1). Relative yield of sweet potato (y), response to fertilizer (x) had improvement quadratically with equation y = -0.0017x2 + 0.538x + 40.035 for N, y = -0.0041x2 + 0.8595x + 38.211 for P2O5, and y = -0.0025x2 + 0.4318x + 73.377 for K2O. The optimized dose of fertilizer to get maximum yield of sweet potato tuber is 158.23 kg ha-1 of N, 78.60 kg ha-1 of P2O5, and 83.60 kg ha-1 K2O, or 343.97 kg ha-1 of Urea,  218.53 kg ha-1 of SP36 139.33 kg ha-1 of KCl.Keywords: multi nutrient response, nitrogen, relative yield, phosphorus, potassium

scholarly journals Growth and Yield Characteristics of Five Different Sweet Potato Varieties Grown in the Guinea Savanna Ecological Zone of Ghana

2021 ◽  
pp. 44-55
Author(s):  
Abonuusum Ayimbire ◽  
Gabriel Asumboya ◽  
Christina Abi Atinga ◽  
Richard Akazotiyele ◽  
Bodieu Marcellinus
Keyword(s):  
Leaf Area ◽  
Sweet Potato ◽  
Tuber Yield ◽  
Block Design ◽  
Growth And Yield ◽  
Petiole Length ◽  
White Variety ◽  
Potato Varieties ◽  
Global Food Security ◽  
Root Tuber

Aim: To determine the growth characteristics of five sweet potato varieties on different soil types as well as how they each relates to tuber yield. This investigation will help guide farmers from resource-limited areas to select varieties that grow well in austere soils to produce good yield of tubers, thereby boosting global food security.  Study Design: Randomized complete block design (RCBD) with five treatments and three replications. Place and Duration of Study: Experimental field of Bolgatanga Technical University for five months. Methodology: Planting was done by inserting 10 cm length of each 30 cm long soft wood vine cutting into the soil, followed by watering. Five vine cuttings planted per ridge at a spacing of 60cm. Vine cuttings were transplanted in the same order on each ridge. There were 15 plants per treatment, so seventy-five (75) for the five treatments. Results: Analysis of the soil showed sandy loamy soil with suitable pH of 6.05. The Orange flesh and Agric white varieties had the largest and smallest leaf areas of 177.76 cm2 and 110.74 cm2 respectively. Leaf area was positively correlated with root tuber mass in only the Red local variety (r = 0.026). Petiole length of the Orange flesh variety (19.08 cm) was significantly longer than that of the Agric white (13.55 cm, p = 0.02), Agric orange flesh (13.85 cm, p = 0.04), Red skin (11.84 cm, p = 0.00) and Red local (12.18 cm, p = 0.00) varieties. Petiole length was positively correlated with tuber yield in only the Orange flesh variety (r = 204). The Red skin (174.28 cm) and Red local (172.46 cm) varieties had the longest vines than all the rest, though not statistically significant (p = 0.241). Root tuber yield of the five varieties were Agric white (1.22 Kg), Agric orange flesh (1.40 Kg), Red skin (4.27 Kg), Red local (2.96 Kg) and Orange flesh (5.72 Kg), which were significantly different from each other (p=0.05).   Conclusion: The Orange flesh variety had the largest leaf area, longest petioles and the highest root tuber mass. On the other hand, the Agric white variety recorded the least Leaf area, Vine length and Tuber mass while the Red skin variety had the shortest Petioles.

scholarly journals Effect of Seedbed Types and time of Vine Harvesting on Shoot and Tuber Yields of Sweet Potato [Ipomoea batatas (L.) Lam.] in South-south, Nigeria

2021 ◽  
pp. 9-20
Author(s):  
Lesi Dike Gbaraneh ◽  
Victoria Wilson
Keyword(s):  
Sweet Potato ◽  
Growth Phase ◽  
Ipomoea Batatas ◽  
Tuber Yield ◽  
Agricultural Research ◽  
Block Design ◽  
Potato Production ◽  
Active Growth ◽  
Harvesting Time ◽  
Root Tuber

A field experiment was conducted at Rivers Institute of Agricultural Research and Training (RIART), Rivers State University, Port Harcourt, Nigeria with the objective of evaluating the influence of seedbed types and vine harvesting time on shoot and tuber yields of sweet potato and make recommendations for optimal and sustainable production. The treatments consisted of three seedbed types (ridge, flat, and mound), and four vine harvesting time (8, 12, 16 and 20 weeks after planting). The experiment was laid out as a 3 x 4 in factorial arrangement fitted into a randomized complete block design (RCBD) and replicated three times. The results revealed that planting of sweet potato on ridge produced the highest root tuber yield followed by mound seedbeds; planting on flat seedbed produced the highest shoot (vine) and lowest tuber yields. While planting on ridge seedbed and harvesting the vines 16 weeks after planting (when about 80% of the growth phase of the plant was completed) produced optimum shoot yield which could be used as fodder with no significant effect on root tuber yield. In general, vine harvesting during active growth phase of the sweet potato plant seriously depressed tuber yield more than it affected shoot production. These results therefore stand as our recommendations for sweet potato production in the South-south zone of Nigeria.

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