scholarly journals Effect of substrates formulated with organic materials on yielding, commercial and phytochemical quality, and benefit-cost ratio of tomato (Solanum lycopersicum L.) produced under greenhouse conditions

2021 ◽  
Vol 49 (1) ◽  
pp. 11999
Author(s):  
Manuel FORTIS HERNANDEZ ◽  
Eliever ANTONIO-ORDOÑEZ ◽  
Pablo PRECIADO-RANGEL ◽  
Miguel A. GALLEGOS-ROBLES ◽  
Cirilo VÁZQUEZ-VÁZQUEZ ◽  
...  

The objective of this study was to evaluate the effect of substrates formulated with different blends of sand-solarized manure and sand-vermicompost over yield, commercial and phytochemical quality of greenhouse tomatoes, and in addition to determine their benefit-cost (B/C) ratio for organic production of tomato. Six substrates were established consisting in blends of sand with 20, 30 or 40% of solarized manure (SM20, SM30 and SM40), and 20, 30 and 40% of vermicompost (VC20, VC30 and VC40), and control (TA) of sand fertilized with Steiner solution. Fruit yielding, commercial (fruit size, equatorial and longitudinal diameter, firmness, and soluble solids content), and nutraceutical quality (phenolic and lycopene content) were evaluated. In addition, cost-benefit (B/C) ratio of treatments was compared. Micro morphological analysis of the organic materials showed microscopic differences that could affect substrate functional properties. Substrate type affect yielding, and VC40 substrate had a higher yield than SM substrates, but SM20 had the highest phenolic and lycopene content in fruit, in addition to the highest cost-benefit production ratio (2.31). These results confirm that substrates formulated with blends of sand and either SM or VC can be used for organic production of tomato fruits with an adequate commercial and phytochemical quality without affecting yield, additionally to the economic advantages of such substrates for protected agriculture systems.

Author(s):  
Ayla Zehra Öncer

This chapter begins with the notion of performance management and then focuses on the concept of social impact in order to deeply examine the measurement of performance in social enterprises. The chapter argues the importance of measuring social impact which is the crucial process in social investment and discusses which measurement method to choose. It then introduces the classification of methods in various forms based on the related literature. The chapter continues by explaining the most frequently used social impact measurement methods including cost effectiveness and cost benefit analyses, social accounting and auditing, SROI, balanced scorecard, SIMPLE, benefit-cost ratio, BACO ratio, expected return metric, cost per impact, and blended value. Finally, the conclusion focuses on the overall perspective of the subject, critical areas to pay attention to, and limitations.


2020 ◽  
pp. 096228022095817
Author(s):  
Linchen He ◽  
Linqiu Du ◽  
Zoran Antonijevic ◽  
Martin Posch ◽  
Valeriy R Korostyshevskiy ◽  
...  

Previous work has shown that individual randomized “proof-of-concept” (PoC) studies may be designed to maximize cost-effectiveness, subject to an overall PoC budget constraint. Maximizing cost-effectiveness has also been considered for arrays of simultaneously executed PoC studies. Defining Type III error as the opportunity cost of not performing a PoC study, we evaluate the common pharmaceutical practice of allocating PoC study funds in two stages. Stage 1, or the first wave of PoC studies, screens drugs to identify those to be permitted additional PoC studies in Stage 2. We investigate if this strategy significantly improves efficiency, despite slowing development. We quantify the benefit, cost, benefit-cost ratio, and Type III error given the number of Stage 1 PoC studies. Relative to a single stage PoC strategy, significant cost-effective gains are seen when at least one of the drugs has a low probability of success (10%) and especially when there are either few drugs (2) with a large number of indications allowed per drug (10) or a large portfolio of drugs (4). In these cases, the recommended number of Stage 1 PoC studies ranges from 2 to 4, tracking approximately with an inflection point in the minimization curve of Type III error.


2009 ◽  
Vol 10 ◽  
pp. 27-33 ◽  
Author(s):  
Raj Kumar Adhikari

During February-April 2008, a study was conducted to compare the yield and economics of organic and inorganic carrot production and its profit volume in Chitwan district of Nepal. Face to face interview method was used to collect the primary information from randomly selected organic and inorganic carrot producers. Among the cost components, per unit cost on female labor and organic fertilizer were found to be higher in organic production system where as higher per unit cost on seed, tillage operation and male labor were found in inorganic production system. Higher cost and higher revenue was found in inorganic production system but higher benefit cost ratio was found in organic production system. This revealed that adoption of organic carrot production system was economically profitable than inorganic production system.  Key words: Benefit cost ratio; Carrot; Cost; Gross margin; Organic agricultureThe Journal of Agriculture and Environment Vol:10, Jun.2009 Page: 27-33


2014 ◽  
Vol 663 ◽  
pp. 596-603
Author(s):  
Zulhaidi Mohd Jawi ◽  
Aqbal Hafeez Ariffin ◽  
Yahaya Ahmad ◽  
Khairil Anwar Abu Kassim ◽  
Norlen Mohamed ◽  
...  

The newly established New Car Assessment Program for Southeast Asian Countries (ASEAN NCAP) has incorporated Safety Assist Technologies (SATs) in its automobile safety rating scheme. In order for any assessed car to be eligible for the maximum 5-star rating, it should first be equipped with Electronic Stability Control (ESC) and fitted with seatbelt reminder (SBR). However, since these SATs are not being evaluated in their performance by the means of field testing, this paper explains the benefit of having these SATs through Cost-Benefit Analysis (CBA) which help to rationalize the importance of SATs in preventing road accidents or mitigating severity of injuries. Due to data limitation, this preliminary CBA assessment will only be focusing on Malaysia’s situation and is based on published sources and the authors’ best estimates. This study also includes the Cost-Benefit Analysis on Anti-lock Braking System (ABS), which is the basis for ESC technology, in preparation for its inclusion in the future rating scheme to expedite the vision of making ABS as standard fit in all ASEAN’s passenger cars. The preliminary result shows that all technologies – ESC, SBR and ABS – appear to be cost-effective (benefit/cost-ratio > 3) or most likely cost effective (1 < benefit/cost-ratio < 3) in Malaysia’s road safety situation per se.


Author(s):  
Tewoderos Meleaku ◽  
Desaly Gebre Tshadike ◽  
Goteom Zenbe

This study aimed to investigate the cost-benefit of sesame production per hectare under (farmers practice, partial package and full package) practice were farmers performed side by side in their plot. Benefit cost ratio analyses of sesame was conducted in western low lands of Tigray. It includes the production year of 2016/17 E.C and bounded of two woredas with six production sites. In the present study 40 respondents of sesame producers were incorporated. Producers were categorized in to full package (row planting, fertilizer and improved seed users), partial package (broadcast, fertilizer and improved seed users) and non package (broad cast and improved seed). Data was analyzed using SPSS version 16 in terms of percentage, mean, model and others. On the other hand, per hectare yield, return, production cost, and benefit cost ratio of each package were statistically different. The mean productivity per hectare for full package, partial package and non package was 6.55, 5.26 and 3.85 quintal sequentially. The mean return per hectare of full package, partial package, and non package was 26243.75, 21746.25 and 13178.91 birr sequentially. The production cost per hectare of full package, partial package, and non package was 13826.74, 12561.35 and 8681.46 birr respectively. The mean benefit cost ratio was 1.90, 1.74 and 1.50 birr respectively for full package, partial package and non package.


2013 ◽  
Vol 23 (6) ◽  
pp. 905-912 ◽  
Author(s):  
Wenjing Guan ◽  
Xin Zhao ◽  
Danielle D. Treadwell ◽  
Michael R. Alligood ◽  
Donald J. Huber ◽  
...  

Interest in producing specialty melons (Cucumis melo) is increasing in Florida, but information on yield performance, fruit quality, and disease resistance of specialty melon cultivars grown in Florida conditions is limited. In this study conducted at Citra, FL, during the 2011 Spring season, 10 specialty melon cultivars were evaluated, in both certified organic and conventionally managed fields, including: Creme de la Creme and San Juan ananas melon (C. melo var. reticulatus), Brilliant and Camposol canary melon (C. melo var. inodorus), Ginkaku and Sun Jewel asian melon (C. melo var. makuwa), Arava and Diplomat galia melon (C. melo var. reticulatus), and Honey Pearl and Honey Yellow honeydew melon (C. melo var. inodorus). ‘Athena’ cantaloupe (C. melo var. reticulatus) was included as a control. ‘Sun Jewel’, ‘Diplomat’, ‘Honey Yellow’, and ‘Honey Pearl’ were early maturing cultivars that were harvested 10 days earlier than ‘Athena’. ‘Athena’ had the highest marketable yield in the conventional field (10.7 kg/plant), but the yield of ‘Camposol’, ‘Ginkaku’, ‘Honey Yellow’, and ‘Honey Pearl’ did not differ significantly from ‘Athena’. Under organic production, ‘Camposol’ showed a significantly higher marketable yield (8.3 kg/plant) than ‘Athena’ (6.8 kg/plant). ‘Ginkaku’ produced the largest fruit number per plant in both organic (10 fruit/plant) and conventional fields (12 fruit/plant) with smaller fruit size compared with other melon cultivars. Overall, the specialty melon cultivars, except for asian melon, did not differ significantly from ‘Athena’ in terms of marketable fruit number per plant. ‘Sun Jewel’, ‘Diplomat’, and ‘San Juan’ showed relatively high percentages of cull fruit. ‘Honey Yellow’, ‘Honey Pearl’, and ‘Sun Jewel’ exhibited higher soluble solids concentration (SSC) than ‘Athena’ in both organic and conventional fields, while ‘Brilliant’, ‘San Juan’, and ‘Ginkaku’ also had higher SSC than ‘Athena’ under organic production. ‘Honey Yellow’, ‘Sun Jewel’, ‘Brilliant’, and ‘Camposol’ were less affected by powdery mildew (caused by Podosphaera xanthii) and downy mildew (caused by Pseudoperonospora cubensis) in the conventional field. ‘Honey Yellow’ and ‘Camposol’ also had significantly lower aboveground disease severity ratings in the organic field compared with ‘Athena’, although the root-knot nematode (RKN) (Meloidogyne sp.) gall rating was higher in ‘Honey Yellow’ than ‘Athena’.


ELKHA ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 33
Author(s):  
Erick Radwitya ◽  
Akhdiyatul Akhdiyatul

Abstract–              Kabupaten Ketapang merupakan Kabupaten terluas, memiliki pantai yang memanjang dari selatan ke utara dan sebagian besar penduduk tinggal di pesisir pantai, dengan kecepatan angin rata-rata adalah 5,1 m/s dan persentase penyinaran matahari 70% merupakan yang tertinggi di Kalimantan Barat. Jika dilihat dari letak dan iklim, untuk memenuhi kebutuhan energi listrik dalam memenuhi kebebutuhan PJU di Kabupaten Ketapang. Salah satu solusi untuk memenuhi kebutuhan energi yang diperlukan PJU adalah Energi Angin dan Energi Surya. Guna mengoptimalkan potensi energi terbarukan yaitu energi angin dan energi surya yang ada di Kabupaten Ketapang untuk kebutuhan PJU maka perlu suatu Kajian Ekonomis Pembangkit Listrik Tenaga Angin Stand Alone dan Pembangkit Listrik Tenaga Surya Stand Alone untuk PJU. Analisis ekonomi adalah suatu analisis untuk mengetahui layak tidaknya suatu kegiatan untuk dilaksanakan dan titik beratnya pada hasil total, produktivitas dan keuntungan. Dalam analisis finansial ini biasanya digunakan Cost Benefit Analisys, Capital Recovery, Payback of Period, Break Even Point dan Benefit Cost Ratio. Hasil yang diperoleh dari kajian ini, untuk PLT Angin AWI-E500T biaya investasi awal senilai Rp. 41.688.350 dengan kapasitas produksi 723 kWh per tahun dan biaya investasi awal untuk PLTS Solar Cell senilai Rp. 18.625.800 dengan kapasitas produksi 204,4 kWh per tahun. Dari analisis ekonomi dengan menggunakan metode BCR, hasil nilai Benefit Cost Ratio untuk PLT Angin AWI E500T dan PLTS Solar Cell lebih besar dari 1 (BCR ≥ 1), ini berarti investasi  layak (feasible) untuk dilaksanakan. Keywords–PLT-Angin Stand Alone, PLTS Solar Cell Stand Alone, Penerangan Jalan Umum (PJU), dan Benefit Cost Ratio (BCR)


2021 ◽  
Vol 50 (4) ◽  
pp. 1159-1164
Author(s):  
Hemant Saini ◽  
Rajender Kumar Godara ◽  
Poonam Saini ◽  
- Vijay ◽  
- Sourabh

Effects of foliar applied macro (NPK) and micro nutrients (Fe, Mn, Zn, Cu and B) at different time on yield, quality and benefit: cost ratio of rainy and winter season guava were evaluated in north western Haryana, India. The two season’s data depicted that physico- chemical characters with respect to fruit set, fruit retention, fruit size, average fruit weight and yield were significantly increased with foliar application of macro and micro nutrients at vegetative, flowering and fruiting stage (T7). The shoot C: N ratio was also found highest with T7 foliar treatment which was followed by T5 in both the seasons. The T7 foliar spray resulted in maximum benefit: cost ratio in both the seasons. Proper fertilization strategies can help fruit growers to get good yield and quality fruits. Bangladesh J. Bot. 50(4): 1159-1164, 2021 (December)


2020 ◽  
Vol 7 (4) ◽  
pp. 177-185
Author(s):  
Kepha Luvinga ◽  
Simon Kilasara

ABSTRACT This study reports upon the findings on the cost and profitability of bodaboda transport business among youths in Arusha. As used in this study, the term bodaboda applies for a two wheeled motorized taxi which provides ‘for hire’ type transport services to passengers and goods. The bodaboda have became an employment opportunity to many unskilled urban labour and further job opportunity to informal sector workers who wish to switch jobs in search of higher rewards. The questionnaires were used to collect data to 90 respondents from two districts of Arusha region namely Arusha and Meru district. Data analysis was done using descriptive statistics and cost benefit analysis. The finding from the study indicates that the bodaboda transport business is profitable with the benefit cost ratio (BCR) of 2.8 and the net present value (NPV) of 8,494,920Tsh for five years project duration. By having the benefit cost ratio and the net present value greater than 1, the bodaboda business is profitable and worth being undertaken. Based on the findings from the study it is recommended that the government authorities and all key stakeholders should regulate, and support the implementation of bodaboda bussiness through formalization of bodaboda associations, assurance of financial supports and capacity building to youths who engage or willing to engage in the business.


1975 ◽  
Vol 18 (1) ◽  
pp. 105-114
Author(s):  
Michael R. Chial ◽  
William G. Beck ◽  
Glen Vanlandingham

Normal-hearing subjects were tested and retested using two spondee threshold criteria: a strict 50% correct rule and a 50% or 75% correct (or both) rule. The 50% criterion produced lower thresholds at the cost of poorer test-retest reliability and longer test durations. Both decision rules gave lower threshold SPL values and required less testing time during the second trial. A proposed benefit-cost ratio model indicated that the 50% or 75% (or both) decision rule gives a better return on the investment of clinical effort.


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