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Academic literature on the topic 'Proportion of tubers of consumer size'
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Journal articles on the topic "Proportion of tubers of consumer size"
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Sadawarti, Murlidhar J., S. P. Singh, R. K. Singh, Subhash Katare, and R. K. Samadhiya. "Agro-techniques for Production of Seed Size Tubers in Conventional Seed Potato Production System–A Review." International Journal of Bio-resource and Stress Management 12, no. 3 (June 30, 2021): 238–46. http://dx.doi.org/10.23910/1.2021.2272.
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The seed potato cost is very important component in total potato production and account for 30 to 70% which varies depending on the country or region. Tuber size is an important factor to decide the seed requirement per unit area. Seed size affects total yield, graded or marketable tuber yields. Standard seed tuber of 25–125 g weight (30–55 mm) is known as seed size tubers in India. Obtaining seed size tuber is important for achieving higher potential of the cultivars. The tuber size profile can be reduced or expanded by altering inter and intra row seed spacing, controlling days of growth by planting late or killing vines/haulm early, regulating inputs like fertilizer and water etc. An ideal combination of plant population, row width, and in-row seed spacing for a particular variety were the major factors for optimizing tuber size. Variation in tuber bulking ability in different genotypes results in variation in proportion of seed size tubers among different varieties. 70–80 days haulm killing found most suitable for getting higher proportion of seed size tubers in high bulking varieties. Proper management of N, P and K fertilizers is considered very important to maximize tuber yield and attain desirable quality. Variability in nitrogen dose/ha was observed which ranged from 100–150 between different regions of the world. Hence proper combination of above Agro-techniques should be adopted in seed production programme as per the region for getting higher proportion of seed size/plantable seed tubers.
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Aighewi, Beatrice, Norbert Maroya, Djana Mignouna, Daniel Aihebhoria, Morufat Balogun, and Robert Asiedu. "The influence of minisett size and time of planting on the yield of seed yam (Dioscorea Rotundata)." Experimental Agriculture 56, no. 3 (May 22, 2020): 469–81. http://dx.doi.org/10.1017/s0014479720000095.
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AbstractIn traditional yam (Dioscorea spp.) production systems in West Africa, finding sole seed yam producers is rare and up to 30% of harvested tubers from the ware tuber crop is reserved to plant an equivalent area of the harvested crop during the next season. Many farmers typically must make a trade-off between food and seed in the use of available tubers. A study was carried out using a factorial experiment in a randomised complete block design to investigate the influence of planting different minisett sizes at different planting periods on the yield of seed yam with the aim of improving the availability of this expensive input and saving more ware tubers for food or sale. Results showed that by doubling or tripling the minisett size from 30 to 60 or 90 g, yields of seed yam increased by 61.1 and 103.3%, respectively. The 90 g minisetts had the highest values for all traits studied but had the least sett multiplication ratio. The early planted crop yielded 137% more than the late-planted crop. Significant interactions between minisett size, planting period and season were found. In 2016, although the highest yield of seed tubers was from early planted 90 g minisetts (35.6 t ha−1), the yield of early planted 30 g minisetts (23.8 t ha−1) was similar to those of 60 g planted mid-season (28.7 t ha−1) and 90 g planted late (20.0 t ha−1). To produce a high proportion of seed size tubers with less planting material, early planting of 30 g minisetts is recommended. Such practice will enhance seed tuber availability and food security by saving 1–2 t ha−1 of tubers that would have been used as seed instead of food.
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Cordero-Ahiman, Otilia Vanessa, Jorge Leonardo Vanegas, Christian Franco-Crespo, Pablo Beltrán-Romero, and María Elena Quinde-Lituma. "Factors That Determine the Dietary Diversity Score in Rural Households: The Case of the Paute River Basin of Azuay Province, Ecuador." International Journal of Environmental Research and Public Health 18, no. 4 (February 20, 2021): 2059. http://dx.doi.org/10.3390/ijerph18042059.
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Inadequate food and nutrition affect human well-being, particularly for many poor subpopulations living in rural areas. The purpose of this research was to analyze the factors that determine the Household Dietary Diversity Score (HDDS) in the rural area of the Paute River Basin, Azuay Province, Ecuador. The sample size of 383 surveys was determined by a stratified random sampling method with proportional affixation. Dietary diversity was measured through the HDDS, with 12 food groups (cereals; roots and tubers; fruits; sugar/honey; meat and eggs; legumes or grains; vegetables; oils/fats; milk and dairy products; meats; miscellaneous; fish and shellfish) over a recall period of 7 days. A Poisson regression model was used to determine the relationship between the HDDS and sociodemographic variables. The results show that the average HDDS of food consumption is 10.89 foods. Of the analyzed food groups, the most consumed are cereals; roots and tubers; fruits; sugar/honey. In addition, the determinants that best explain the HDDS in the predictive model were housing size, household size, per capita food expenditure, area of cultivated land, level of education, and marital status of the head of household. The tools used in this research can be used to analyze food and nutrition security interventions. Furthermore, the results allow policymakers to identify applicable public policies in the fight against hunger.
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Strange, PC, and KW Blackmore. "Comparison of 10 clones of the potato cultivar, Kennebec." Australian Journal of Experimental Agriculture 29, no. 4 (1989): 597. http://dx.doi.org/10.1071/ea9890597.
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Nine clones of Solanum tuberosum L. cv. Kennebec from sources in Victoria, South Australia and Tasmania, and the commercially grown clone, clone 1, which was imported from Vancouver, were multiplied from pathogen-tested seed and compared in 3 Victorian potato districts during 2 seasons. Haulm appearance of the 10 clones was similar. Tubers of clones 2 and 9 had a more desirable elliptical shape with shallow eyes than clones 1, 7, 8, 11 and 13. Clone 7 produced significantly (P<0.05) less total yield than the highest yielding clone at 3 sites. Compared with the other clones, clones 2 and 7 yielded significantly (P<0.05) less oversize (>450 g) and medium (100-450 g) tubers and significantly (P<0.05) higher yields of small (<100 g) tubers at several sites. Clone 1 produced a much higher proportion (5.7%) of total yield as oversize tubers than clones 2 (1.6%) and 7 (0.8%). Clones 2 and 7 produced a significantly higher (P<.05) number of tubers per plant than all other clones at the 3 sites. Averaged over these 3 sites, clones 2 (and 7) produced 6.2 (6.8) tubers per plant and the other clones were in the range 4.5-5.0. No consistent differences in specific gravity or crisp colour were observed between the clones. Clone 2 was selected as being best suited for the crisp processing industry because of its even shape, high number of tubers per plant and low yield of oversize tubers, while maintaining high yields and good specific gravity and crisp colour. Our results show that differences exist in total and size grade yield and tuber number and appearance between clones of a cultivar. They further highlight the importance of selection work to maintain desirable characteristics of established cultivars and to remove mutants with undesirable characteristics.
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Gambo, EL-Maude Jibreel, Bawa Ahmed Bello, and Shamaki Aranpu Rimamshung. "Effect of Board Size, Board Composition and Board Meetings on Financial Performance of Listed Consumer Goods in Nigeria." International Business Research 11, no. 6 (May 9, 2018): 1. http://dx.doi.org/10.5539/ibr.v11n6p1.
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The central thrust of this study is to examine the effect of board size, board composition and board Meetings on the financial performance of listed consumer goods in Nigeria over the period of ten years from 2006 to 2015. The study uses expo factor research design and purposive sampling technique (filter) as research design and sampling technique. The population of the study is twenty (20) listed consumer goods companies in Nigeria and a sample size of ten (10) companies were studied. The data was analysed by means of descriptive statistics, Correlation and Regression analysis using STATA (version 11). The descriptive result reveals that return on assets has minimum and maximum values of -0.0400 and 0.4700 respectively and the mean and standard deviation of 0.1199 and 0.1038 respectively. The study made use of secondary data generated from annual report and account of the sampled companies through Nigeria Stock Exchange fact book. The findings include the following: Board size is negatively significant at 1% with T. Value of _2.70, Board composition is positively significant at 1% with T- Value of 2.15 and finally, Board meeting is negatively insignificant with T- Value of _1.45. This study concluded that smaller board size are more effective than larger board size, good proportion of board composition is a good factor to enhance ROA of listed consumer goods companies in Nigeria and frequent board meeting will have negative effect on the ROA of listed consumer goods companies in Nigeria because it will limits the chances for external directors to conduct a meaningful oversight over management. Hence the study recommends among others; That smaller board size should be used in listed consumer goods companies in Nigeria to enhance their ROA, the listed consumer goods companies should continue to maintain good proportion of independence directors. The listed consumer goods companies in Nigeria should discourage unnecessary board meetings to allow board of directors perform other oversight function on the management so as to enhance the ROA of listed consumer goods companies in Nigeria.
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Ghosh, Amit K. "The influence of price and promotion on package size propensity." American Journal of Business 32, no. 2 (June 5, 2017): 93–103. http://dx.doi.org/10.1108/ajb-10-2016-0032.
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Purpose The constantly changing prices, promotions, and packaging options have made decision making more complex for consumers of packaged goods. The purpose of this paper is to explore how price and promotions influence consumer propensity to buy a certain package size. Design/methodology/approach Scanner panel data for shelf-stable salad dressing obtained from Information Resources Inc. were used to compute the proportion of large packages bought, the relative price paid for large packages, propensity to use various types of promotions, and a behavioral covariate for each household. Data of over 5,600 households were analyzed using a multiple regression analysis for hypothesis testing. Findings The positive nature of relationship between the relative price of large packages and the proportion of large packages bought demonstrates the suboptimal nature of consumer decision making. The inefficiency is partially attributable to the abundance of promotions, to consumers’ lack of price awareness, and to the use of heuristics by consumers. Also, consumers who are prone to use promotions such as displays and temporary price reductions tend to purchase larger packages. They are more likely to buy impulsively and base their decisions on heuristics. In contrast, consumers who are influenced by featured price cuts and who utilize coupons tend to purchase smaller packages. Research limitations/implications Data were obtained from grocery stores; only a single product category was studied. Practical implications Offer coupons and advertise featured price cuts on small packages to increase the sales of smaller packages. To move large packages successfully, retailers should rely more on in-store displays and temporary price reductions. Originality/value The impact of price and promotions on package size propensity has never been investigated. This study is also one of the few that uses a household-level analysis based on observable purchase data for consumer packaged goods.
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Walker, Karen Z., Julie L. Woods, Cassie A. Rickard, and Carrie K. Wong. "Product variety in Australian snacks and drinks: how can the consumer make a healthy choice?" Public Health Nutrition 11, no. 10 (October 2008): 1046–53. http://dx.doi.org/10.1017/s1368980007001462.
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AbstractObjectiveTo estimate the proportion of ‘healthy’ snack food and beverage choices available to an Australian consumer.DesignA survey of product Nutrition Information Panels (NIP) and product labels on snack foods and beverages offered for sale. Data on nutrient content were compared with criteria from different nutrient profile systems to estimate the proportion of items conforming to a ‘healthy’ choice.SettingA large supermarket in metropolitan Melbourne, Australia.ResultsA consumer could choose from 1070 different snack foods and 863 different drinks. Flavour variety was more common in snacks (maximum thirteen per product) while variation in container size was more common for drinks (up to ten per product). Recommended serving size for snacks varied greatly (18–100 g) while the serving size for drinks frequently did not correspond to the size of the container. Depending on the nutrient profile system selected, only 9–22 % of snack foods presented for sale could be deemed ‘nutritious’ by multiple criteria. Similarly, only 14–27 % of beverages met ‘healthy’ criteria.ConclusionsAs one factor to help reduce the obesogenic environment, the supply balance needs to be shifted in favour of ‘healthier’ snack foods and beverages, e.g. by reformulation of many products by the food industry and their presentation in smaller, standardised portion-size packaging.
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Singh, SP, SK Sharma, and MJ Sadawarti. "Evaluation of different options for enhancing proportion of seed size tubers in early bulking potato (Solanum tuberosum L) variety Kufri Khyati." International Journal of Chemical Studies 8, no. 5 (September 1, 2020): 1131–36. http://dx.doi.org/10.22271/chemi.2020.v8.i5p.10446.
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Jefferies, R. A., and D. K. L. Mackerron. "Thermal time as a non-destructive method of estimating tuber initiation in potatoes." Journal of Agricultural Science 108, no. 1 (February 1987): 249–52. http://dx.doi.org/10.1017/s0021859600064339.
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Water stress during the period when tubers are initiated may reduce the final number of tubers (MacKerron & Jefferies, 1986) and increase the incidence of common scab (Streptomyces scabies) in susceptible cultivars (Lapwood & Hering, 1970). It is important, therefore, for the maintenance of a large number of tubers and for the limitation of scab, to be able to estimate the time of tuber initiation. Tuber initiation has been defined differently by a number of workers (e.g. Sale, 1979; Sands, Hackett & Nix, 1979; O'Brien et al. 1983; MacKerron & Jefferies, 1986) based on either the number or proportion of stolon apices that have reached a certain size (usually twice the diameter of their stolons). These are definitions of tuber growth rather than development and require destructive sampling at frequent intervals for recognition of the event. Temperature has a major influence on the rates at which plant organs develop so that the time taken to reach a given developmental stage may be related to thermal time, defined as the time-integral of temperature (Jones, 1983). In potato the physiological age of tubers (Wurr, 1978; Allen et al. 1979; O'Brien et al. 1983), sprout development and extension (MacKerron, 1984), and the initiation of leaf primordia (Kirk, Davies & Marshall, 1985) have been related to thermal time. In a model of the development and bulking of potatoes Sands et al. (1979) used a single non-linear function to describe the effects of time and temperature on several development processes including tuber initiation. That function did not adequately describe the time taken to tuber initiation and Sands et al. (1979) did not then use tuber initiation as an important stage in their model.
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Dama, S. G., S. P. Pangemanan, J. K. J. Kalangi, and A. Makalew. "Preferensi konsumen terhadap konsumsi “ragey” di Kota Manado." ZOOTEC 41, no. 1 (February 17, 2021): 71. http://dx.doi.org/10.35792/zot.41.1.2021.31947.
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CONSUMER PREFERENCES TOWARDS RAGEY CONSUMPTION IN MANADO CITY.This study aims to determine consumer preferences and attributes that are considered consumers of ragey in Manado City. This research was conducted in Manado City, North Sulawesi Province. The location determination was carried out deliberately (purposive sampling) at three restaurants selling ragey, namely the ragey restaurant Tanta Olla, the ragey Roy restaurant and the ragey 21 Telling restaurant from 08 July to 08 August 2019. The research method is survey and interview methods using a questionnaire that has been provided. Samples were determined by accidental sampling with 100 samples. Types of data are primary data and secondary data as well as descriptive analysis and conjoint analysis. The results showed that ragey atributs such as price with a value of 0.530 , size with a value of 0.410 and proportion of meat with a value of 0.700 had significant correlation (P<0,05) with consumers preferences. Attributes that are considered by consumers in buying ragey sequentially, namely the proportion of 34.808%, size 33.896% and price of 31.296%.
Dissertations / Theses on the topic "Proportion of tubers of consumer size"
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KULÍK, Jan. "Reakce vybraných odrůd brambor na aplikaci listových hnojiv." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-174187.
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The aim of the experiment was to evaluate the reaction of chosen potato varieties to the application of leaf fertilizers. The speed of their action and, together with combination with other interventions (common application with fungicides), and also the economics of their application belong among the advantage of leaf fertilizer application. In 2012 and 2013 there was an experiment established in 380 m above the sea level. In this experiment the effect of application of urea solution, Lignohumate, and Energen Fructus was evaluated in the varieties with a different length of vegetation period Magda very early, Adéla - early, Laura and Satina semi early and Bionta - late. The rate of sprouted plants, the yield of tubers, the proportion of tubers of consumer size, the number of tubers under cluster, an average weight of one tuber, the number of stems per a plant, and the content of starch were evaluated in these plants. It was found out from the results that in 2012 Magda and Satina varieties reacted with an increased average weight of one tuber after the application of all leaf fertilizers. The effect of Lignohumate was the most positive in this year; it increased an average weight of one tuber in Magda, Adéla, and Satina varieties. In comparison to that, in the second year of the experiment there was a positive reaction to additional fertilizing with Lignohumate, Urea, and Energen Fructus, leading to the increase of an average weight of one tuber in Magda, Adéla, Laura, and Bionta varieties. In 2013 there was the highest influence on an average weight of one tuber caused by the use of Urea, namely in Magda, Adéla, Laura, and Bionta varieties.
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HOŠKOVÁ, Jana. "Porovnání produkční schopnosti vybraných odrůd brambor v ekologickém a konvenčním systému pěstování." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-188401.
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The dissertation investigated on the base of smallparcelled land the production abilities of chosen varieties of potatoes with different lenght of vegetation period in conventional and ecological system. The aim was to evaluate the yield of the tubers, weight of tubers, number of tubers under bunch, number of tubers with a proportion of market value tubers, amount of starch and amount of nitrates on the base of reached results of one years field experiment based on ecological and conventional grown system. The chosen varieties were divided in germinated and non germinated variantions in small parcelled experiment. It was found out that content of nitrates was by both grown technologies under hygienic limit. The lower values were reached in ecological grown system. The determinated starch content of tubers did not prove the differencies between varieties and growing system and it was determinated by 14 %. The conventional technology was better evaluated by yielded elements. Very early variety Magda non germinated showed from chosen varieties enhanced yield of tubers in ecological grown system and it was defined to 87 % of conventional yield for determinated variety. The whole number of tubers in ecological system reached 82 % of conventional technology. Positive influence of germinated seedlings was proved by the yield of consuming tubers. Despite the ecological way of growing was less productive in all evaluated criteria it has very important position in potatoes offer in the market.