scholarly journals Effect of Foliar Fungicides on Hail-damaged Corn

2016 ◽  
Vol 17 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Adam J. Sisson ◽  
Yuba R. Kandel ◽  
Alison E. Robertson ◽  
Chad E. Hart ◽  
Amy Asmus ◽  
...  
Keyword(s):  
Disease Severity ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Growth Stages ◽  
Benefit Analysis ◽  
Economic Returns ◽  
Foliar Disease ◽  
Fungicide Application ◽  
Positive Economic ◽  
Hail Damage

To test if fungicide applied to hail-injured corn improves yield and reduces disease, we simulated hail at VT and R2 growth stages for three years at three Iowa locations for a total of five site years. Hail damage was simulated using a string trimmer or an ice-propelling machine and non-hail controls were included. Estimated defoliation ranged from 5 to 51%, along with ear and stalk injury. After hail events, Headline AMP fungicide (pyraclostrobin + metconazole) was applied at an “immediate” or “deferred” timing (averaging 3 and 8 days afterwards, respectively). A non-fungicide treated control was included in hailed and non-hail control plots. Hail injury reduced fungal foliar disease compared to plants without hail injury, although overall disease severity was low during this study. Hail events at VT or R2 decreased yield compared to control plots (P = 0.1). Fungicide application did not provide yield-increasing plant health benefits after VT and R2 hail, at either “immediate” or “deferred” timing. While yield differences were not statistically significant, a cost/benefit analysis showed deferred fungicide application after VT hail, and immediate and deferred applications after VT for non-hail plots did provide positive economic returns. Results will help inform decisions about fungicide use in hail-damaged corn when foliar diseases are not present at high levels. Accepted for publication 7 January 2016. Published 13 January 2016.

scholarly journals Cost-benefit analysis of urban subsidence mitigation strategies in Gouda, the Netherlands

2020 ◽  
Vol 382 ◽  
pp. 761-766
Author(s):  
Sien Kok ◽  
Saskia Hommes-Slag
Keyword(s):  
The Netherlands ◽  
Inner City ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Mitigation Strategies ◽  
Benefit Analysis ◽  
Positive Economic ◽  
Economic Rationale

Abstract. This paper presents the approach and outcomes of an exploratory cost-benefit analysis of subsidence mitigation strategies in the inner city of Gouda, the Netherlands. Results indicate that especially the strategy focusing on reducing damage, rather than a strategy aiming to halt subsidence altogether, might have a positive economic rationale.

scholarly journals Effect of Foliar Fungicide and Insecticide on Hail-Damaged Soybean

2016 ◽  
Vol 17 (2) ◽  
pp. 141-148
Author(s):  
Adam J. Sisson ◽  
Yuba R. Kandel ◽  
Chad E. Hart ◽  
Amy Asmus ◽  
Stith N. Wiggs ◽  
...  
Keyword(s):  
Disease Severity ◽  
Growth Stage ◽  
Yield Loss ◽  
Brown Spot ◽  
Growth Stages ◽  
Economic Return ◽  
Foliar Disease ◽  
Hail Damage ◽  
Seed Moisture ◽  
Foliar Fungicide

A fungicide (pyraclostrobin) and an insecticide (alpha-cypermethrin) were applied alone or in combination to hail-injured soybean to determine if yield could be preserved or foliar disease prevented. Pesticides were applied at approximately R3 growth stage and hail injury was simulated with an ice-propelling machine at approximately R1 and R4 growth stages over three years at three Iowa locations. Disease severity was low throughout the study, and included Septoria brown spot, downy mildew, and Cercospora leaf blight. Differences in disease severity among treatments receiving hail and those that did not receive hail were not consistently detected. More importantly, foliar disease severity did not differ among pesticide treatments and untreated controls. Simulated hail caused significant (P = 0.1) yield loss. No difference in yield was observed between untreated and pesticide-treated plots within hail events, except for two site years when hail damage occurred at R1. Seed moisture was generally higher in plots with R1 hail damage. Fungicide and insecticide applied in combination to hail-damaged soybean was more likely to result in a positive economic return than either applied alone. Based on results, R3 fungicide application to soybean injured by hail at R1 or R4 will likely provide little yield-preserving or disease-limiting benefits when foliar disease severity is low. Accepted for publication 21 April 2016. Published 20 June 2016.

scholarly journals Is nitrogen fertiliser an economic option in tussock hill country?

2014 ◽  
Vol 76 ◽  
pp. 149-154
Author(s):  
D.R. Stevens ◽  
B.R. Thompson ◽  
W.D. Catto ◽  
K.D. Trainor
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Cost Effective ◽  
Stocking Rate ◽  
Benefit Analysis ◽  
Economic Returns ◽  
Gross Margin ◽  
Pasture Production ◽  
Hill Country ◽  
Pasture Quality

Abstract Tussock hill and high country is a finite resource. Farmers are developing these areas to increase production but often at the expense of tussock which provides shelter for stock, increases biodiversity and captures moisture in dry environments. An experiment at a single hill country site near Roxburgh, Otago was established on oversown tussock with soil of low pH (5.1) and high soluble aluminium (15 ppm) to compare the use of capital lime (0-5 t/ha), annual and capital superphosphate (0-1000 kg/ha) and annual nitrogen (N) fertiliser inputs (0-150 kg/ha) over 4 years to investigate the potential of different fertiliser strategies to increase economic returns. Annual yield of the Control without fertiliser was approximately 3200 kg DM/ha/annum, which may support an estimated stocking rate of 6 ewes/ha during the growing season. Using lime did not increase the pasture production or stocking rate, though even small amounts increased pasture quality. Use of phosphate and sulphur increased the stocking rate to approximately 9 ewes/ha, while adding N fertiliser increased potential stocking rate to approximately 12 ewes/ha. These increases were a combination of increased pasture production and increased pasture quality. A combination of phosphate, sulphur, lime and nitrogen provided a potential net increase in gross margin of $200/ha. This cost benefit analysis suggests that regular use of N fertiliser along with other known fertiliser requirements may be a very cost effective way of increasing hill country production without resorting to full scale tussock development. Keywords: gross margin, hill country, fertiliser, quality, sheep stocking rate, yield.

The Use of Cost-Benefit Analysis for Evaluating Efficiency of Public Investment Projects (The Case of Sochi-2014 Winter Olympic Games)

2011 ◽  
pp. 57-78
Author(s):  
I. Pilipenko
Keyword(s):  
Net Present Value ◽  
Olympic Games ◽  
Cost Benefit Analysis ◽  
Public Investment ◽  
Cost Benefit ◽  
Investment Efficiency ◽  
Benefit Analysis ◽  
Step Method ◽  
Investment Projects ◽  
The Usa

The paper analyzes shortcomings of economic impact studies based mainly on input- output models that are often employed in Russia as well as abroad. Using studies about sport events in the USA and Olympic Games that took place during the last 30 years we reveal advantages of the cost-benefit analysis approach in obtaining unbiased assessments of public investments efficiency; the step-by-step method of cost-benefit analysis is presented in the paper as well. We employ the project of Sochi-2014 Winter Olympic and Paralympic Games in Russia to evaluate its efficiency using cost-benefit analysis for five accounts (areas of impact), namely government, households, environment, economic development, and social development, and calculate the net present value of the project taking into account its possible alternatives. In conclusion we suggest several policy directions that would enhance public investment efficiency within the Sochi-2014 Olympics.

Hostile Takeovers and Anti-takeover Defenses in the Russian Corporate Market

2007 ◽  
pp. 70-84 ◽  
Author(s):  
E. Demidova
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Costs And Benefits ◽  
Hostile Takeovers ◽  
Russian Market ◽  
Takeover Defenses ◽  
The Cost ◽  
European Markets

This article analyzes definitions and the role of hostile takeovers at the Russian and European markets for corporate control. It develops the methodology of assessing the efficiency of anti-takeover defenses adapted to the conditions of the Russian market. The paper uses the cost-benefit analysis, where the costs and benefits of the pre-bid and post-bid defenses are compared.

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