Technical and Economic Evaluation of Three Types of Tomato Nutrient Solutions under Semi-Controlled Conditions

2016 ◽  
Vol 8 (8) ◽  
pp. 68 ◽  
Author(s):  
Lady Arbelaez ◽  
John Rivera ◽  
Alejandro Hurtado-Salazar ◽  
Nelson Ceballos-Aguirre

<p>This study was conducted to evaluate the effect of three types of nutrient solutions on the development, performance, quality and cost of chonto tomato (<em>Solanum lycopersicum</em> L.) under semi-controlled conditions. The assessment was conducted in the farm Tesorito, Manizales, Colombia. An experimental design was established in randomized complete blocks (RCB), with 3 treatments, 4 replicates per treatment and 10 effective plants per replicate. The variables were: height of the first cluster, production per plant, yield t ha-1 and qualities of the fruit. The economic variables were production costs, cost-benefit ratio (C/BR), rate of return (IRR) and net present value (NPV). In general, production per plant was greater than 4.7 kg plant<sup>-1</sup> and the average yield was 92 t ha<sup>-1</sup>. The use of conventional fertilization (tt2) generated increased production of premium quality fruit with a value of 37.11 t ha<sup>-1</sup>, demonstrating that conventional soil fertilization implemented in this culture under semi-controlled conditions in the company of drip irrigation system in the root zone improve outcomes of productive variables, increasing profitability and competitiveness with a net profit of USD$ $ 25203.68 ha<sup>-1</sup>, with average selling price of USD$ 0.45 per kilogram and a unit production margin of USD$ 0.21 per kilogram, making this technology attractive and economically viable.</p>

2018 ◽  
Vol 36 (2) ◽  
pp. 246-252
Author(s):  
Haroldo F Araújo ◽  
Paulo AM Leal ◽  
Pâmela S Betin ◽  
Eduardo F Nunes

ABSTRACT Financial profitability is a factor as important as quantifying production using new technologies. This study was installed to evaluate short and long term financial viability of organic production of cherry tomatoes. Plants were grown in a greenhouse under diverse technological degrees for partial control of micrometeorological elements. The experiment was carried out at the experimental field FEAGRI/UNICAMP in three greenhouses with automated mechanical ventilation systems, evaporative cooling and thermo reflective screen. We cultivated Carolina cultivar in a spacing of 0.5x0.9 m, each plant conducted with two stems, under organic production and fertilization management. The average of production data of treatments {three greenhouses (A= climate-controlled, B= mobile screen and C= fixed screen), two cultivation systems (pots and soil beds) and five biofertilizer doses (0, 50, 100, 150, and 200%)} were evaluated using joint analysis. Thus, the economic indicators {cost benefit ratio (B/C), net present value (NPV), internal rate of return (IRR) and Payback (PV)} were evaluated through revenues and production costs. The best alternative to net monthly cycle profitability (500 m2) was approximately 1 and 1.5 minimum wage with and without particular labor, respectively, associated with the greenhouse of medium technological level, using soil bed cultivation system. The economic viability of the project in long-term interest rates above 3% (a.a) was consistent, but the payback period even with a rate of 1% a.a was high (6.54 years) in financing conditions.


2017 ◽  
Vol 240 ◽  
pp. R15-R29
Author(s):  
Leon Feinstein ◽  
Haroon Chowdry ◽  
Kirsten Asmussen

In this paper we explain some of the difficulties of providing forecasts of the financial benefits of early intervention programmes, focussing on those delivered during the early childhood period. We highlight the diversity of early intervention, and the complexity and multiplicity of outcomes. We summarise recent work at the Early Intervention Foundation to assess the evidence on the impacts of early intervention, recognising the diversity of approaches to delivery and the importance of innovation and local practice as well as of rigorous approaches to evaluating causal effects. We also describe new ways of assessing accurately the local fiscal costs of late intervention and consider the implications of this for addressing the well-established barriers to investment in prevention. Our analysis brings to the fore gaps in the evidence from which even the most rigorous ‘gold-standard’ research is not immune. These limitations prevent the production of an accurate and realistic cost-benefit ratio or net present value for the majority of programmes as delivered in practice. We suggest some paths towards a firmer foundation of evidence and a better alignment of evidence and policy.


2016 ◽  
Vol 5 (4) ◽  
pp. 58
Author(s):  
Monika Ghimire ◽  
Art Stoecker ◽  
Tracy A. Boyer ◽  
Hiren Bhavsar ◽  
Jeffrey Vitale

<p class="sar-body"><span lang="EN-US">This study incorporates spatially explicit geographic information system and simulation models to develop an optimal irrigation system. The purpose of the optimized irrigation system was to save depleted ground water supplies. ArcGIS was used to calculate the area of potential irrigable soils, and EPANET (a hydrological simulation program) was used to calculate energy costs. Crop yield response functions were used to estimate the yield of cotton to the amount of irrigation and the accumulation of soil salinity over a 50-year period. Four irrigation designs (A, B, C, and D) were analyzed with different irrigation schedules.</span></p><p class="sar-body"><span lang="EN-US">Design A allowed all producers to irrigate simultaneously at 600 gallons per minute (gpm) or 2,271 liters per minute (lpm) while designs B and C divided the irrigable areas into two parts. Design D divided the areas into four parts to allow producers to irrigate one part at a time at 800 gpm (3,028 lpm). Irrigation scheduling not only lessened the water use and cost, but also amplified the profitability of the irrigation system. In design A, if all producers adopted 600 gpm (2,271 lpm) pivots and operated simultaneously, the cost of the 360,000 gpm (1363,000 lpm) pipeline would be prohibitive. In contrast, designs B, C, and D increased net benefits and lowered the breakeven price of cotton. The 50-year net present value for designs A, B, C, and D was profitable over 75, 70, 70, and 65 cents of cotton price per pound (454 g), respectively. Thus, this study endorses irrigation scheduling as a tool for efficient irrigation development and management, and increases water conservation.</span></p>


2013 ◽  
Vol 368-370 ◽  
pp. 1289-1295
Author(s):  
Ren Jun ◽  
Peng Wang ◽  
Xiang Yang Jiang

The Paper, based on the theory of technical and economic assessment, puts forward to make financial assessment (on net present value, payback time, risk-benefit ratio, etc.) as the economic control index in accordance with the ideology of entire life cycle during the energy-saving reconstruction of public buildings. Then the Paper makes analysis on cost-benefit ratio of energy-saving reconstruction measures taken on various parts and equipment of outer protective structure, finds out approaches to energy-saving reconstruction with high efficiency, and finally adopts the method of sensitivity analysis on individual energy-saving reconstruction measures to further optimize reconstruction plan, thus improving economic benefits of energy saving.


2018 ◽  
Vol 24 (1-2) ◽  
Author(s):  
F. Apáti ◽  
E. Kovács ◽  
M. Kocsis

In this study we were studying the question whether walnut production under domestic natural and economic circumstances shall be considered a profitable activity or not. Our partial objective is to determine, what level of natural inputs and production costs are required for walnut production, what yield level, selling price and production value can be attained, what level of profitability, rentability and efficiency may production have, is the establishment of a walnut orchard profitable on the entire lifespan of the plantation, and the production of which is more efficient: the dry shelled walnut production requiring postharvest activity or the raw, shelled walnut without postharvest activities. In this study, comparison of two systems is conducted. First version: producer establishes a walnut plantation and sells walnut raw and shelled. Second version: producer also invests into a drying facility, and in this case the end product is the dry, shelled walnut. If the producer sells walnut right after harvest in a raw bulk, total production costs in productive years reaches 974,011 HUF/ha. Attainable yield is 2.63 t/ha with 396.3 HUF/kg selling price, therefore the profit is 138,258 HUF/ha with 14.19% cost-related profitability. In the case when the producer sells dried, shelled walnut, production costs are 25% higher compared to that of raw walnut due to the cost of drying. By calculating with the postharvest loss, average yield is 1.84 t/ha, however, its selling price is way higher (882.84 HUF/kg), therefore the profit per hectare reaches 475,496 HUF with 39.01% cost-related profitability. Thus it can be stated that walnut production in an average year may be profitable even without postharvest, but efficiency is improved significantly when the producer sells the products dried. Investment profitability analysis revealed that production of raw, shelled walnut is not economically viable, since the plantation does not pay off on its entire lifespan (30 years), while walnut production with postharvest is efficient and rentable, since both net present value (NPV) and internal rate of return (IRR) showed more favourable values than in the previous case, and the orchard pays off in the 21th year after establishment.


2019 ◽  
pp. 213-232
Author(s):  
Vukasin Roncevic ◽  
Miodrag Zlatic ◽  
Mirjana Todosijevic

This paper presents the results of an erosion processes research on the territory of the morphological unit of Sutilovacki stream, the prevention measures of same processes, as well as the justification of socio-economic investments and a sensitivity analysis of the economic efficiency parameters. The research includes a period from 2017-2032 year, whereby the evaluation methods of professor Gavrilovic are applied in erosion process intensity assessment, on the whole research area, and universal soil loss equation - USLE, on the agricultural land area. Different rates of soil erosion vulnerability are established on the whole research area by applying these methods. Present erosion processes are prevented by the predicted model of future production from the aspect of soil resource protection in the area of the city of Belgrade, by professor Zlatic (1994). Erosion soil losses are significantly diminished and reduced under a tolerable limit, along with the accomplishment of socio-economic justification of investment, examined by the dynamic methods of internal rate of yield, term for the repayment of invested funds, cost-benefit ratio, and net present value. In addition, an analysis of internal rate of yield sensitivity and term for repayment of invested funds are executed. The obtained data indicate justification of the investment.


2013 ◽  
Vol 14 (1) ◽  
pp. 27-32
Author(s):  
Renzo Colombo ◽  
Federico Pellucchi ◽  
Lorenzo Rocchini ◽  
Carmen Maccagnano ◽  
Pablo Katz ◽  
...  

BACKGROUND: Bladder cancer accounts for 5-10% of all cancers in Europe and up to 85% patients presents a noninvasive tumor, whose treatment of choice is the transurethral bladder resection (TURB) paired with adjuvant intravesical chemotherapy or immunotherapy. Despite several clinical trials showed that this treatment is safe and decreases recurrences by 17% to 44% this practice is limited for many reasons. The study objective is to analyze the economical advantages of the single immediate post operative Mitomycin C instillation in Non Muscle-invasive Bladder Cancer (NMIBC) low-risk patients.METHODS: A cost-benefit analysis was performed evaluating the economical gain that would raised from a scenario with a single immediate post operative mitomycin C instillation in each low-risk NMIBC patient who underwent to TURB. Net present value and cost-benefit ratio were calculated and sensitivity analyses were performed. Base case analysis was performed considering tumor recurrence rate reduction of 11.7% and a TURB costs of 2,167.0 €, while sensitivity analyses were performed using a recurrence rate reduction of 19.2% and 15.0% and a TURB cost of 2,472.93 €. The discount rate was 2%.RESULTS: The single immediate post operative instillation of mitomycin C resulted to be cost-beneficial with a cost-benefit ratio that goes from 0.48 to 0.79 when compared to TURB alone raising a Net Present Value that goes from 660,284.39 € to 2,650,530.79 €.CONCLUSION: This study demonstrates that even assuming conservative parameters for recurrence rates reduction, a single immediate post operative mitomycin C instillation in low risk NMIBC patients would lower not only the recurrence rate but also the caring cost for bladder cancer.


2020 ◽  
Vol 15 (2) ◽  
pp. 179-191
Author(s):  
Felippe Martins Damaceno ◽  
Francieli Helena Bernardi ◽  
Victor Hugo Stormovski Cesar

RESUMO:  O objetivo deste trabalho consistiu em avaliar a viabilidade econômico-financeira de empreendimentos de construção e demolição realizarem a reciclagem de fragmentos de concreto e cerâmica. Para tal, foram projetados quatro cenários econômicos considerando construtoras responsáveis pela geração de diferentes quantidades de resíduos de construção e demolição (RCD’s), nos quais foi orçada uma britadeira móvel para a reciclagem do material. Os custos relacionados à aquisição, operação e manutenção da britadeira, foram confrontados em fluxos de caixa, com as receitas provenientes do uso ou venda do material reciclado na forma de brita n° 0, bem como da economia com caçambas de entulhos. Posteriormente, a rentabilidade dos projetos foi avaliada mediante o fator de recuperação do capital, o valor presente líquido e a taxa interna de retorno. Quanto maior a produção de RCD’s, maior também é a relação custo-benefício da aquisição da britadeira e, em função da maior quantidade de brita n° 0 reciclada (passível de ser utilizada na produção de contrapiso ou comercializada) e da maior economia com caçamba de entulhos, maiores são as receitas adquiridas, menor é o período de retorno do capital investido e maior é a rentabilidade financeira dos cenários projetados. A reciclagem de RCD’s além de proporcionar benefícios ambientais, pode ser um investimento financeiramente atrativo. ABSTRACT: The objective of this work was to evaluate the economic and financial feasibility of construction and demolition projects to carry out the recycling of concrete and ceramic fragments. For this, four economic scenarios were designed considering constructors responsible for the generation of different amounts of construction and demolition waste (RCD's), in which a mobile squeegee was used to recycle the material. The costs related to the acquisition, operation and maintenance of the crushing machine were compared to cash flows, with revenues from the use or sale of recycled material in the form of gravel No. 0, as well as the economy with litter bins. Subsequently, the profitability of the projects was evaluated by the capital recovery factor, the net present value and the internal rate of return. The higher the production of RCD’s, the greater the cost-benefit ratio of the purchase of the crushing machine and, due to the greater quantity of recycled crushed stone (which can be used in the production of sub-floor or commercialized) and the largest economy with a bucket of debris, the higher are the revenues acquired, the lower the return period of invested capital and the greater the financial profitability of the projected scenarios. Recycling RCD’s in addition to providing environmental benefits can be a financially attractive investment.


Author(s):  
Marcos Ferreira Brabo ◽  
Gerfeson Almeida da Silva ◽  
Daniel Abreu Vasconcelos Campelo ◽  
Galileu Crovatto Veras ◽  
Andréia Santana Bezerra ◽  
...  

The objective of this study was to analyze the influence of the adoption of single-phase and two-phase system on the economic feasibility of tambaqui (Colossoma macropomum) family production in the Tracuateua municipality, Pará state. The operational cost methodology and economic efficiency indicators were adopted to compare these rearing systems. The annual production was 4,200 kg and 5,826 kg. The operational costs were R$ 26,169.00 and R$ 34,365.00, the total operational cost was R$ 27,505 and R$ 35,701.00, and the total operational cost per kg was R$ 6.55 and R$ 6.13 for single-phase and two-phase systems, respectively. Regarding the indicators, the net present value was R$ 24,180.70, the internal rate of return was 24%, the cost-benefit ratio was 1.19, and the capital return period was four years in the single-phase system. In the two-phase period, the net present value was R$ 48,582.06, the internal rate of return was 29%, the cost-benefit ratio was 1.25, and the capital return period was 3.6 years. Despite the demand for greater investment, the two-phase system proved to be more profitable than the single-phase system, promoting even a reduction in unit production cost.


Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 7
Author(s):  
Collins Wakholi ◽  
Shona Nabwire ◽  
Juntae Kim ◽  
Jeong Hwan Bae ◽  
Moon Sung Kim ◽  
...  

To minimize production costs, reduce mistakes, and improve consistency, modern-day slaughterhouses have turned to automated technologies for operations such as cutting, deboning, etc. One of the most vital operations in the slaughterhouse is carcass grading, usually performed manually by grading staff, which creates a bottleneck in terms of production speed and consistency. To speed up the carcass grading process, we developed an online system that uses image analysis and statistical tools to estimate up to 23 key yield parameters. A thorough economic analysis is required to aid slaughterhouses in making informed decisions about the risks and benefits of investing in the system. We therefore conducted an economic analysis of the system using a cost-benefit analysis (the methods considered were net present value (NPV), internal rate of return (IRR), and benefit/cost ratio (BCR)) and sensitivity analysis. The benefits considered for analysis include labor cost reduction and gross margin improvement arising from optimizing breeding practices with the use of the data obtained from the system. The cost-benefit analysis of the system resulted in an NPV of approximately 310.9 million Korean Won (KRW), a BCR of 1.72, and an IRR of 22.28%, which means the benefits outweigh the costs in the long term.


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