Palmer Amaranth (Amaranthus palmeri) and Velvetleaf (Abutilon theophrasti) Control in No-Tillage Conventional (Non–genetically engineered) Soybean Using Overlapping Residual Herbicide Programs

2018 ◽  
Vol 33 (1) ◽  
pp. 95-105 ◽  
Author(s):  
Debalin Sarangi ◽  
Amit J. Jhala
Keyword(s):  
United States ◽  
The United States ◽  
Genetically Engineered ◽  
Palmer Amaranth ◽  
Cost Ratio ◽  
No Tillage ◽  
Benefit Cost Ratio ◽  
No Till ◽  
Benefit Cost ◽  
Herbicide Programs

AbstractDue to depressed corn and soybean prices over the last few years in the United States, growers in Nebraska are showing interest in no-tillage (hereafter referred to as no-till) conventional (non–genetically engineered [non-GE]) soybean production. Due to the increasing number of herbicide-resistant weeds in the United States, weed control in no-till non-GE soybean using POST herbicides is a challenge. The objectives of this study were to compare PRE-only, PRE followed by (fb) POST, and PRE fb POST with residual (POST-WR) herbicide programs for Palmer amaranth and velvetleaf control and soybean injury and yield, as well as to estimate the gross profit margins and benefit–cost ratio of herbicide programs. A field experiment was conducted in 2016 and 2017 at Clay Center, NE. The PRE herbicides tested in this study resulted in ≥95% Palmer amaranth and velvetleaf control at 28 d after PRE (DAPRE). Averaged across the programs, the PRE-only program controlled Palmer amaranth 66%, whereas 86% and 97% control was obtained with the PRE fb POST and PRE fb POST-WR programs, respectively, at 28 d after POST (DAPOST). At 28 DAPOST, the PRE fb POST herbicide programs controlled velvetleaf 94%, whereas the PRE-only program resulted in 85% control. Mixing soil-residual herbicides with foliar-active POST programs did not improve velvetleaf control. Averaged across herbicide programs, PRE fb POST programs increased soybean yield by 10% and 41% in 2016 and 2017, respectively, over the PRE-only programs. Moreover, PRE fb POST-WR programs produced 7% and 40% higher soybean yield in 2016 and 2017, respectively, compared with the PRE fb POST programs. The gross profit margin (US$1,184.3 ha−1) was highest under flumioxazin/pyroxasulfone (PRE) fb fluthiacet-methyl plusS-metolachlor/fomesafen (POST-WR) treatment; however, the benefit–cost ratio was highest (6.1) with the PRE-only program of flumioxazin/chlorimuron-ethyl.

Cost–Benefit Analysis of Rural and Small Urban Transit in the United States

2015 ◽  
Vol 2533 (1) ◽  
pp. 141-148 ◽  
Author(s):  
Ranjit Prasad Godavarthy ◽  
Jeremy Mattson ◽  
Elvis Ndembe
Keyword(s):  
United States ◽  
Urban Areas ◽  
Public Transit ◽  
The United States ◽  
Cost Ratio ◽  
Urban Transit ◽  
Transit Systems ◽  
Benefit Cost Ratio ◽  
True Value ◽  
Benefit Cost

The true value of transit systems in rural and small urban areas in the United States has been largely unmeasured, and there are often effects that go unidentified. Many studies have documented the benefits of urban transit systems with benefit–cost analysis. However, not many have looked into the benefits of transit in rural and small urban areas, where there is a great need for public transit, especially for transportation-disadvantaged individuals. This study focused on evaluating the qualitative and quantitative benefits of rural and small urban public transit systems and analyzed the benefit–cost ratio for rural and small urban transit areas for fixed-route and demand-response services in the United States. Data for rural and small urban transit systems from the national transit database (NTD) and rural NTD were used for calibrating the transit benefits and costs. Results were presented at a national level to show the effects of transit investments in rural and small urban areas nationally. Transit benefits in the United States for 2011 were found to be $1.6 billion for rural transit and $3.7 billion for small urban transit, not including the economic effects. Results showed a benefit–cost ratio of 2.16 for small urban transit and 1.20 for rural transit in the United States. Sensitivity analysis showed that increasing the percentage of forgone trips to 50%, increasing the cost of forgone medical and work trips by 25%, and increasing the percentage of medical trips to 30% substantially increased the total transit benefits by 88%, 20%, and 158%, respectively.

scholarly journals The Benefit-Cost Ratio in Resource Development Planning

1971 ◽  
Vol 3 (1) ◽  
pp. 161-166
Author(s):  
George A. Pavelis
Keyword(s):  
United States ◽  
Resource Development ◽  
Resource Planning ◽  
The United States ◽  
Development Planning ◽  
Cost Ratio ◽  
Production Theory ◽  
Benefit Cost Ratio ◽  
Complete Treatment ◽  
Benefit Cost

The stimulus for this article was an observation that resource development in the United States is of a lumpy or whole project-by-project character. We seem to have looked at resource development proposals in isolation from other worthwhile activities and to have been preoccupied with the magnitude of “benefit-cost ratios” in evaluating and comparing individual resource development activities, projects, or programs. Unless properly interpreted, however, such ratios can mislead planners and legislators to invest capital and other inputs in a way that leads to a less than fully efficient pattern of resource development, even where the objective is only to maximize quantifiable monetary benefits. Accordingly, this analysis examines the “benefit-cost ratio” in the context of an income-producing efficiency objective and elementary production theory. Such other currently emphasized objectives as environmental quality improvement are treated implicitly, though not within a multiobjective framework. For a more complete treatment of these see Miller and Holloway [9] who have illustrated an application of multiobjective resource planning principles recently issued by the Water Resources Council [15]. Other particular papers and reports dealing with multiobjective resource development planning are [3, 4, 5, 7, 9, 13 and 14].

Is the Juice Worth the Squeeze? A Benefit/Cost Analysis of the District of Columbia Opportunity Scholarship Program

2013 ◽  
Vol 8 (1) ◽  
pp. 74-99 ◽  
Author(s):  
Patrick J. Wolf ◽  
Michael McShane
Keyword(s):  
United States ◽  
Private School ◽  
The United States ◽  
Control Group ◽  
Cost Ratio ◽  
Economic Returns ◽  
Benefit Cost Analysis ◽  
Benefit Cost Ratio ◽  
Scholarship Program ◽  
Benefit Cost

School voucher programs have become a prominent aspect of the education policy landscape in the United States. The DC Opportunity Scholarship Program is the only federally funded voucher program in the United States. Since 2004 it has offered publicly funded private school vouchers to nearly four thousand students to attend any of seventy-three different private schools in Washington, DC. An official experimental evaluation of the program, sponsored by the federal government's Institute of Education Sciences, found that the students who were awarded Opportunity Scholarships graduated from high school at a rate 12 percentage points higher than the students in the randomized control group. This article estimates the benefit/cost ratio of the DC Opportunity Scholarship Program, primarily by considering the increased graduation rate that it induced and the estimated positive economic returns to increased educational attainment. We find a benefit to cost ratio of 2.62, or $2.62 in benefits for every dollar spent on the program.

scholarly journals Evaluating Public Programs with Close Substitutes: The Case of Head Start*

2016 ◽  
Vol 131 (4) ◽  
pp. 1795-1848 ◽  
Author(s):  
Patrick Kline ◽  
Christopher R. Walters
Keyword(s):  
Head Start ◽  
Test Score ◽  
The United States ◽  
Cost Ratio ◽  
Public Programs ◽  
Benefit Cost Ratio ◽  
Wide Range ◽  
Fiscal Impacts ◽  
The Cost ◽  
Benefit Cost

Abstract We use data from the Head Start Impact Study (HSIS) to evaluate the cost-effectiveness of Head Start, the largest early childhood education program in the United States. Head Start draws roughly a third of its participants from competing preschool programs, many of which receive public funds. We show that accounting for the fiscal impacts of such program substitution pushes estimates of Head Start’s benefit-cost ratio well above one under a wide range of assumptions on the structure of the market for preschool services and the dollar value of test score gains. To parse the program’s test score impacts relative to home care and competing preschools, we selection-correct test scores in each care environment using excluded interactions between experimental assignments and household characteristics. We find that Head Start generates larger test score gains for children who would not otherwise attend preschool and for children who are less likely to participate in the program.

Management of glyphosate-resistant Palmer amaranth (Amaranthus palmeri) in 2,4-D–, glufosinate-, and glyphosate-resistant soybean

2020 ◽  
pp. 1-8
Author(s):  
Chandrima Shyam ◽  
Parminder S. Chahal ◽  
Amit J. Jhala ◽  
Mithila Jugulam
Keyword(s):  
United States ◽  
Field Experiments ◽  
The United States ◽  
Palmer Amaranth ◽  
Amaranthus Palmeri ◽  
Soybean Yield ◽  
Chlorimuron Ethyl ◽  
Density And Biomass ◽  
Herbicide Programs ◽  
Biomass Reduction

Abstract Glyphosate-resistant (GR) Palmer amaranth is a problematic, annual broadleaf weed in soybean production fields in Nebraska and many other states in the United States. Soybean resistant to 2,4-D, glyphosate, and glufosinate (Enlist E3TM) has been developed and was first grown commercially in 2019. The objectives of this research were to evaluate the effect of herbicide programs applied PRE, PRE followed by (fb) late-POST (LPOST), and early-POST (EPOST) fb LPOST on GR Palmer amaranth control, density, and biomass reduction, soybean injury, and yield. Field experiments were conducted near Carleton, NE, in 2018, and 2019 in a grower’s field infested with GR Palmer amaranth in 2,4-D–, glyphosate-, and glufosinate-resistant soybean. Sulfentrazone + cloransulam-methyl, imazethapyr + saflufenacil + pyroxasulfone, and chlorimuron ethyl + flumioxazin + metribuzin applied PRE provided 84% to 97% control of GR Palmer amaranth compared with the nontreated control 14 d after PRE. Averaged across herbicide programs, PRE fb 2,4-D and/or glufosinate, and sequential application of 2,4-D or glufosinate applied EPOST fb LPOST resulted in 92% and 88% control of GR Palmer amaranth, respectively, compared with 62% control with PRE-only programs 14 d after LPOST. Reductions in Palmer amaranth biomass followed the same trend; however, Palmer amaranth density was reduced 98% in EPOST fb LPOST programs compared with 91% reduction in PRE fb LPOST and 76% reduction in PRE-only programs. PRE fb LPOST and EPOST fb LPOST programs resulted in an average soybean yield of 4,478 and 4,706 kg ha−1, respectively, compared with 3,043 kg ha−1 in PRE-only programs. Herbicide programs evaluated in this study resulted in no soybean injury. The results of this research illustrate that herbicide programs are available for the management of GR Palmer amaranth in 2,4-D–, glyphosate-, and glufosinate-resistant soybean.

scholarly journals Cost-effectiveness analysis of BNT162b2 COVID-19 booster vaccination in the United States

2021 ◽  
Author(s):  
Rui Li ◽  
Hanting Liu ◽  
Christopher Kit Fairley ◽  
Zhuoru Zou ◽  
Li Xie ◽  
...  
Keyword(s):  
United States ◽  
Older Adults ◽  
Cost Effectiveness ◽  
Booster Vaccination ◽  
Cost Effective ◽  
The United States ◽  
Cost Ratio ◽  
System Perspective ◽  
Benefit Cost Ratio ◽  
The Cost

Background: Over 86% of older adults aged ≥65 years are fully vaccinated against SARS-COV-2 in the United States (US). Waning protection of the existing vaccines promotes the new vaccination strategies, such as providing a booster shot for those fully vaccinated. Methods: We developed a decision-analytic Markov model of COVID-19 to evaluate the cost-effectiveness of a booster strategy of Pfizer-BioNTech BNT162b2 (administered 6 months after 2nd dose) in those aged ≥65 years, from a healthcare system perspective. Findings: Compared with 2-doses of BNT162b2 without a booster, the booster strategy in a 100,000 cohort of older adults would incur an additional cost of $3.4 million, but save $6.7 million in direct medical costs in 180 days. This corresponds to a benefit-cost ratio of 1.95 and a net monetary benefit of $3.4 million. Probabilistic sensitivity analysis indicates that with a COVID-19 incidence of 9.1/100,000 person-day, a booster strategy has a high chance (67%) of being cost-effective. The cost-effectiveness of the booster strategy is highly sensitive to the population incidence of COVID-19, with a cost-effectiveness threshold of 8.1/100,000 person-day. This threshold will increase with a decrease in vaccine and booster efficacies. Doubling the vaccination cost or halving the medical cost for COVID-19 treatment alone would not alter the conclusion of cost-effectiveness, but certain combinations of the two might render the booster strategy not cost-effective. Interpretation: Offering BNT162b2 boosters to older adults aged ≥65 years in the US is likely to be cost-effective. Less efficacious vaccines and boosters may still be cost-effective in settings of high SARS-COV-2 transmission. Funding: National Natural Science Foundation of China. Berlina and Bill Gates Foundation

Comparative Effectiveness Of Seed Treating And Foliar Insecticides Against Sucking Pests Of Cotton And Impact On Their Natural Enemies

2013 ◽  
Vol 38 (1) ◽  
pp. 61-70 ◽  
Author(s):  
SMA Hossain ◽  
MA Baque ◽  
MR Amin
Keyword(s):  
Natural Enemies ◽  
Untreated Control ◽  
Seed Treatment ◽  
Foliar Spray ◽  
Cost Ratio ◽  
Research Station ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
Thrips Population ◽  
Cotton Cultivar

The Imidacloprid insecticide, Gaucho 70 WS at 1.5, 2.5, 3.5, 4.5 and 5.5 g/kg seed was used as seed treatment and monocrotophos 40 WSC at 1120 ml/ha was applied as foliar spray on CB9 cotton cultivar to suppress aphid, whitefly and thrips, and impact on their natural enemies during 2008-2011 at the Regional Cotton Research Station, Dinajpur, Bangladesh. The activity of natural enemies, such as ladybird beetle, lacewing, syrphid, and spider population on the sucking pests attacking cotton cultivar CB9 and yield of cotton were recorded. Imidacloprid significantly reduced aphid, whitefly, and thrips population on cotton crops compared to untreated control or foliar spray of monocrotophos 40 WSC at 1120 ml/ha. Ladybird beetles, lacewings, syrphids, and spiders were abundant in the field but their population decreased in the treated plots compared to untreated control. The CB9 cotton cultivar produced significantly higher yield (1.73 t/ha) with a benefit cost ratio 12.47 when seeds were treated with Imidacloprid at 5.5 g/kg fuzzy seed. This study indicated that Imidacloprid (Gaucho 70 WS) used as a seed treatment may be suggested to the cotton growers for controlling sucking pests. Bangladesh J. Agril. Res. 38(1): 61-70, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15190

EVALUASI TERHADAP PENGELOLAAN SAMPAH DALAM MENINGKATKAN PELAYANAN ASET DI KOTA PEMATANGSIANTAR

2017 ◽  
Vol 13 (3) ◽  
pp. 240
Author(s):  
Novdin M Sianturi
Keyword(s):  
Net Present Value ◽  
Payback Period ◽  
Rate Of Return ◽  
Cost Ratio ◽  
Internal Rate Of Return ◽  
Present Value ◽  
Benefit Cost Ratio ◽  
Internal Rate ◽  
Benefit Cost

Abstrak: Pengelolaan sampah di Kota Pematangsiantar masih bertumpu pada pendekatan akhir (kumpul-angkut-buang), dengan tingkat pelayanan yang rendah, sehingga untuk meningkatkan pelayanan sampah, perlu dilakukan pemilahan di tempat penampungan sementara (TPS). Penelitian ini bertujuan untuk mengkaji sistem pengelolaan sampah dengan melakukan pemilihan di TPS dapat meningkatkan pelayanan aset persampahan sampai tahun  2015 secara teknis operasional dan dari aspek keuangan. Analisa teknis operasional aset pengelolaan sampah mulai dari pewadahan, pengumpulan dan pengangkutan sedangkan analisa keuangan dan analisa kelayakan menggunakan Net Present Value, Internal Rate of Return, Benefit/Cost Ratio, dan Payback Period. Dari hasil analisa tersebut diperoleh suatu sistem pengelolaan sampah dengan pemilihan di TPS berdasarkan zona pelayanan dengan skala prioritas secara bertahap daritahun 2013-2017, dapat meningkatkan cakupan pelayanan sampah eksisting rata-rata 6,69 %, cakupan pelayanan TPS eksisting rata-rata 8,29 %, dan cakupan pelayanan truk pengangkut sampah eksisting rata-rata 12,03 %. Investasinya layak, diperoleh Net Cashflow pada tahun 2020 sebesar Rp 1.720.242.284,-, NPV suku bunga 15 % bernilai positif, IRR > MARR 15 %,  B/C Ratio > 1, dan PP 4,7 tahun, lebih pendek dari periode investasi 10 tahun. Dari Metode penelitian ini maka pengumpulan data, observasi lapangan dan pengukuran contoh timbulan sampah dengan sampel 4 TPS perumahan yang terlayani pengangkutan.

Profitability and Efficiency Analyses of Small Scale Rice processing units in Ngoketunjia Division, North West Region, Cameroon.

2014 ◽  
Vol 3 (2) ◽  
pp. 177-182
Author(s):  
Bime M.J ◽  
Fon D.E ◽  
Ngalim S.B ◽  
Ongla J
Keyword(s):  
Value Added ◽  
Primary Data ◽  
Small Scale ◽  
Fixed Cost ◽  
Cost Ratio ◽  
Parboiled Rice ◽  
North West ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
Rice Processing

Rice production and processing over the years has been on an increase with more small holders entering the business. This study on profitability of processing and marketing of small scale rice processors had as objective to analyse the profitability levels of rice processing and marketing by small scale processors, determine the value added to the commodity at each stage  and also identify the constraints faced by these processors. The study used primary data collected using well-structured questionnaire from millers only, miller traders for white/parboiled rice through a multistage sampling technique. Results showed that the net processing income (3,151,201), value added (8,147,456) and efficiency (138) for miller-traders of white rice was highest, followed by miller-traders for parboiled rice and lastly millers only. Results further showed that millers only had Benefit/cost ratio of 0.4 indicating that milling only is not profitable due to small quantities milled, and high fixed cost. Miller-traders for parboiled rice had a benefit/cost ratio of 2.3 implying that their venture is most profitable. Based on the results, it was recommended that millers only should purchase large quantities of paddy to enable them reduce the overhead cost. Also the services of parboilers should reflect in the sales price of parboiled rice so that the parboiling services can be paid for.

EFFECT OF DIFFERENT DOSES OF BORON ON GROWTH AND YIELD OF OFF-SEASON CAULIFLOWER (BRASSICA OLERACEA VAR. BOTRYTIS) IN ARGHAKHANCHI, NEPAL

2020 ◽  
Vol 1 (1) ◽  
pp. 12-17
Author(s):  
Srijana Pandey ◽  
Sapana Parajuli ◽  
Biplov Oli ◽  
Surya Dhungana
Keyword(s):  
Brassica Oleracea ◽  
Growth Parameters ◽  
Block Design ◽  
Leaf Length ◽  
Growth And Yield ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Net Returns ◽  
Benefit Cost ◽  
Different Doses

The research was conducted at Beltari Sandhikharka-10, Arghakhanchi district to study about the effect of various doses of boron on growth and yield attributing characters of cauliflower (Brassica oleracea var. botrytis) during off-season from February to June in 2020. Five treatments; B0 (control/no application), B1: 2kg/ha, B2: 4kg/ha, B3: 6kg/ha, B4: 8kg/ha which are the different doses of boron application were laid out in Randomized Complete Block Design (RCBD) with 4 replications. The growth parameters like plant height, number of leaves per plant leaf length and leaf breadth of largest leaf were recorded multiple times with 15 days interval. Days to curd initiation and Days from curd initiation to harvest were recorded by regular field observation. The yield parameters; curd weight with leaves, Marketable curd weight, average curd yield, incidence of hollowing were recorded during harvest. The economics from application of boron doses in cauliflower production was obtained in terms of cost of cultivation, gross returns, net returns, and benefit cost ratio. The result showed that the growth and yield attributing characters of cauliflower were significantly affected by application of boron in which the value of these parameters was found significantly higher in B1 followed by other treatments. The average curd yield of cauliflower in B1 was found to be 12.39 mt/ha which was 48.92% higher than that of B0 with curd yield 8.32 mt/ha. Similarly, the net return was found significantly the highest in B1 and the lowest in B0. The result showed that application of boron in the range of 2-4 kg/ha is preferred to control and higher doses in respect of both productivity and economics.

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