Consulta: subjectFacets:"Economical analysis"
Registros recuperados: 4
Data/hora: 10/06/2024 15:21:43

Prefarm Systems and economical analysis of practical experiences
Provedor de dados: 31
Autores: Gnip,   Pavel; Kafka,   Stepan; Cepicky,   Jachym; Charvat,   Karel.
The system of Precision farming guarantees a detail monitoring of data and information necessary for a successful decision in a crop production. The system is designed for a data collection from several sources. The data are collected by a service company and also directly by farmers. The paper also analyses the economical efficiency on the base of Medlov Farm. Next development is currently running under projects Prezem and AgriSensor.
Tipo: Journal Article
Palavras-chave: GPS; GIS; Precision farming; Economical analysis; Monitoring; Farm Management; Research and Development/Tech Change/Emerging Technologies.
Ano: 2009
URL: http://purl.umn.edu/96855

Análise de risco do desempenho econômico de um sistema de recria de gado de corte em regime de pastejo rotacionado
Provedor de dados: 31
Autores: Simoes,   Andre Rozemberg Peixoto; Moura,   Altair Dias de.
The success of the agricultural systems is affected by several social, cultural and economical variables, which can restrict or nurture the development of the agribusiness. In this context, agricultural managers search for ways to improve production efficiency. This effort comprises the improvement of the managerial activities and decision making process. This research aimed to build a risk analysis framework, using different scenarios of economical analysis of an animal husbandry firm. The data used was collected from a rotational grazing system for beef cattle. The results suggest that the profitability of the system is low, and some of the risk scenarios presented negative profitability.
Tipo: Journal Article
Palavras-chave: Economical analysis; Beef cattle; Scenarios; Monte Carlo simulation; Risk analysis; Risk and Uncertainty.
Ano: 2006
URL: http://purl.umn.edu/55309

Iron sources for citrus rootstock development grown on pine bark/vermiculite mixed substrate
Provedor de dados: 63
Autores: Ferrarezi,Rhuanito Soranz; Bataglia,Ondino Cleante; Furlani,Pedro Roberto; Schammass,Eliana Aparecida.
For high technology seedling production systems, nutrition plays an important role, mainly the fertigation with iron chelates to prevent its deficiency. This study had the goal of searching for alternative iron sources with the same nutrient efficiency but lower cost in relation to nutrient solution total cost. An experiment was carried out in 56 cm³-conic-containers tilled with a pine bark/ vermiculite mixed substrate using Fe-DTPA, Fe-EDDHA, Fe-EDDHMA, Fe-EDTA, Fe-HEDTA, FeCl3, FeSO4, FeSO4+citric acid plus a control, and the rootstocks Swingle, Rangpur, Trifoliata and Cleopatra, in a randomized complete block design, with four replicates. Seedlings were evaluated for height, relative chlorophyll index, total and soluble iron leaf concentrations....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedling production; Chelates; Fertigation; Economical analysis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000500010

Determination of a long-term optimal irrigation strategy for dry beans in Parana State, Brazil
Provedor de dados: 63
Autores: Faria,R.T. de; Folegatti,M.V.; Frizzone,J.A.; Saad,A.M.
The economical benefits of different irrigation strategies were assessed by long term simulation (20 years) for dry beans in Paraná, Brazil. The model BEANGRO was used to simulate crop yield and irrigation requirements assuming eight levels of irrigation threshold (20 to 90% of the remaining soil available water in steps of 10%), in addition to a level considering no irrigation. Net return was the objective function to select the optimum irrigation management strategy, assuming fixed and stochastic distributions of historical product price. The results showed that yield was significantly increased by irrigation despite a high variability for all the simulation strategies, due to variations on growth conditions over the years. Although the net return was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation; Modeling; Economical analysis.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300018