Consulta: subjectFacets:"NPV"
Registros recuperados: 7
Data/hora: 13/06/2024 04:05:40

Harvest Cost and Value of Citrus Operations with Alternative Technology: Real Options Approach
Provedor de dados: 31
Autores: Iwai,   Nobuyuki; Emerson,   Robert D.; Roka,   Fritz M.
The prospect of immigration policy reform has renewed growers’ concerns of serious labor shortages and cost increases. These concerns are more serious for specialty crop agriculture, not only because it is highly labor intensive, but also it requires labor in a very short period, particularly at harvest time. Two representative approaches of the investment valuation have been applied to the case of harvesting mechanization for the model citrus grower in Florida. Specifically, we applied the NPV approach and the real options approach (ROA) to processed-market Hamlin orange operations in Southwest Florida.
Tipo: Conference Paper or Presentation
Palavras-chave: Real options; NPV; Mechanization; Immigration policy; Harvest cost; Citrus operations; Agribusiness; Agricultural Finance; Farm Management; Labor and Human Capital; Risk and Uncertainty; Q14 – Agricultural Finance; J43 – Agricultural Labor Markets.
Ano: 2009
URL: http://purl.umn.edu/49942

Mathematical optimisation of drainage and economic land use for target water and salt yields
Provedor de dados: 31
Autores: Nordblom,   Thomas L.; Hume,   Iain H.; Bathgate,   Andrew D.; Reynolds,   Michael.
Land managers in upper catchments are being asked to make expensive changes in land use, such as by planting trees, to attain environmental service targets, including reduced salt loads in rivers, to meet needs of downstream towns, farms and natural habitats. End-of-valley targets for salt loads have sometimes been set without a quantitative model of cause and effect regarding impacts on water yields, economic efficiency or distribution of costs and benefits among stakeholders. This paper presents a method for calculating a ‘menu’ of technically feasible options for changes from current to future mean water yields and salt loads from upstream catchments having local groundwater flow systems, and the land-use changes to attain each of these options at...
Tipo: Journal Article
Palavras-chave: Discounting; Landuse; NPV; Opportunity-cost; Salinity; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/116973

Risk and the decision to produce biomass crops: a stochastic analysis
Provedor de dados: 31
Autores: Clancy,   Daragh; Breen,   James P.; Thorne,   Fiona S.; Wallace,   Michael T.
There is increasing interest in biomass crops as an alternative farm enterprise. However, given the relatively low uptake of these crops in Ireland, there is limited information concerning the risk associated with their production and its potential impact on returns. The uncertainty surrounding risky variables such as the costs of production, yield level, price per tonne and opportunity cost of land make it difficult to accurately calculate the returns to biomass crops. Their lengthy production lifespan may only serve to heighten the level of risk that affects key variables. A stochastic budgeting model is used to calculate the returns from willow and miscanthus. The opportunity cost of land is accounted for through the inclusion of the foregone returns...
Tipo: Conference Paper or Presentation
Palavras-chave: Biomass; Bioremediation; Stochastic Budgeting; NPV; SERF; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/91955

A Binomial Tree Approach to Valuing Fixed Rotation Forests and Flexible Rotation Forests Under a Mean Reverting Timber Price Process
Provedor de dados: 31
Autores: Tee,   James; Scarpa,   Riccardo; Marsh,   Dan; Guthrie,   Graeme.
NPV and LEV are established and common approaches to valuing single rotation and infinite rotation forests respectively, when the rotation age is fixed in advanced. More recently, Real Options approaches have been employed to value single and infinite rotation forests with a flexible harvest age. Under a stochastic timber price process, it has been shown that the valuation of a flexible rotation forest is equal or higher than that of a fixed rotation forest, because a flexible harvest regime delays the harvest if the timber price is not favourable, whereas a fixed harvest regime would proceed to harvest regardless of the price. Often, valuation of fixed and flexible rotation ages are compared using 2 different methods – NPV (or LEV) and Real Options. The...
Tipo: Conference Paper or Presentation
Palavras-chave: NPV; LEV; Real Options; Optimal Harvest Decision; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/96836

Comparative bio-efficacy of nuclear polyhedrosis virus (NPV) and Spinosad against American bollwormm, Helicoverpa armigera (Hubner)
Provedor de dados: 92
Autores: Nawaz,Ahmad; Ali,Habib; Sufyan,Muhammad; Gogi,Muhammad Dildar; Arif,Muhammad Jalal; Ranjha,Mazhar Hussain; Arshid,Muhammad; Waseem,Muhammad; Mustafa,Tariq; Qasim,Muhammad; Rizwan,Muhammad; Zaynab,Madiha; Khan,Khalid Ali; Ghramh,Hamed A.
ABSTRACT American bollworm (ABW), Helicoverpa armigera (Hubner), is considered as a major pest of cotton, Gossypium hirsutum, all over the globe. Due to its destructive feeding nature and continuous consumption of the same chemicals, it devolved resistant against many insecticides. Therefore, a combined application of bio- and synthetic-pesticide need to evaluate against this pest. The entomopathogenic viruses like nuclear polyhedrosis virus (NPV), a member of baculoviruses, can be the potential candidates for better control against ABW. The present study was conducted to assess the comparative efficacy of NPV and Spinosad 240SC (with the concentration of 250 mL · ha-1) against ABW in the controlled environment. The ABW was treated with different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: American bollworm; Bio-pesticide; Insecticide; Microbial control; NPV.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400277

Optimal Financial Insulation Thickness of a Broiler House
Provedor de dados: 111
Autores: Panagakis- FBC, Panagiotis; Manolakos, Dimitris; Axaopoulos, Petros.
A common method for environmental control in livestock facilities is to use thermal insulation for exterior walls and roof. In regions with cool winters increasing the insulation thickness decreases the heating requirements, however in regions with hot summers may lead to unwanted increase of inside temperature, thus intensifying cooling loads. It is worth noting that financial thickness optimization of a broiler house external walls and gable roofs insulation for different orientations has not been sufficiently addressed, thus a detailed transient simulation was used to model existing energy audited broiler house and to calculate its annual heating and cooling loads. For that, hourly climatic data and all the heat and moisture gains and losses resulting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler house; Optimum insulation thickness; Cooling load; Heating load; NPV; Greece.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6891

Insecticidal Efficacy of Azadirachta indica, Nucleopolyhedrovirus and Chlorantraniliprole Singly or Combined against Field Populations fo Helicoverpa armigera Hübner (Lepidoptera: Noctuidae)
Provedor de dados: 117
Autores: Wakil,Waqas; Usman Ghazanfar,M; Nasir,Fozia; Abdul Qayyum,Mirza; Tahir,Muhammad.
The development of resistance in cosmopolitan insect Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) forced the researchers for alternative control measures. In the present study, insecticidal efficacy of formulations of Azadirachta indica, a Nucleopolyhedrovirus (NPV), and new anthranilic diamide insecticide (chlorantraniliprole) formulations was determined against 2nd, through 5th larval instars of H. armigera collected from diverse geographical locations in the Punjab province, Pakistan. Azadirachta indica was applied at 5 &amp;#956;L L-1; NPV at 2.1 x 10(5) polyhedral occlusion bodies (POB) mL4 and chlorantraniliprole at 0.01 &amp;#956;L L-1, either alone or in combinations with each other. The bioassays were conducted at 27 ± 1 °C and 65 ± 5%...
Tipo: Journal article
Palavras-chave: NPV; Chlorantraniliprole; Additive; Populations.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100009