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A whole-farm investment analysis of some precision agriculture technologies AgEcon
Knight, Brad; Malcolm, Bill.
This study used information about a farm in the Victorian Mallee during the period 1998 – 2005 to analyse the profitability of investing in Precision Agriculture and Site-Specific Crop Management technology and farming systems. Two equipment guidance systems were evaluated. Both guidance systems earned more than 8 percent real return p.a. on the extra capital invested. A Real-Time Kinetic (RTK) guidance system with a precision of 2 cm and a capital cost of $50,000 was less profitable than a Sub-Metre guidance system with 20 cm accuracy and costing $20,000. Producers investing in RTK guidance technology would be well-paid to also adopt supporting management practices that enhance crop gross margins or provide other benefits. The capital cost of GPS...
Tipo: Article Palavras-chave: Precision Agriculture; GPS technology; Investment; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/121470
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Adoption of Variability Detection and Variable Rate Application Technologies by Cotton Farmers in Southern United States AgEcon
Nair, Shyam; Wang, Chenggang; Segarra, Eduardo; Belasco, Eric J.; Velandia, Margarita M.; Reeves, Jeanne M..
A nested logit model was used to analyze the 2009 Southern Cotton Precision Farming Survey to study the impact of farmer and farm characteristics on the adoption of Variability Detection Technologies (VDT) and the adoption of Variability Rate application Technology (VRT) conditioned on the type of the VDT chosen. The results showed that the farm size and exposure to extension activities are important factors affecting the choice of VDTs. The farmers adopting both soil and plant based VDTs are more likely to adopt VRT. The probability of adoption of VRTs was lower for Texas cotton farmers irrespective of the type of VDT adopted. In general, younger, more educated farmers who use computers for farming operations are more likely to adopt VRT when they...
Tipo: Conference Paper or Presentation Palavras-chave: Precision Agriculture; Technology Adoption; Cotton; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies; O33; Q16.
Ano: 2011 URL: http://purl.umn.edu/103567
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ANÁLISE DA ADOÇÃO DA TECNOLOGIA DA INFORMAÇÃO NA HORTICULTURA BRASILEIRA AgEcon
Boteon, Margarete; Silva, Rafaela Cristina Da; Deleo, Joao Paulo Bernardes.
A tecnologia está mais acessível ao produtor. O valor de um computador hoje equivale a 1 tonelada de adubo (uréia). A medida que o custo da tecnologia caiu, os valores dos fatores de produção – fertilizantes e salários – subiram significamente. Assim, é vital o produtor encontrar formas de otimizar o uso de insumos e melhorar a produtividade da mão-de-obra no campo. A superação desse desafio pode ter apoio importante na tecnologia da informação. Pesquisa realizada com produtores de frutas e hortaliças observou que boa parte deles já tem acesso aos principais meios de comunicação. No entanto, o uso desses meios integrado ao sistema de produção, como controle de custos de produção e uso de ferramenta de agricultura de precisão, ainda é pequeno. A conclusão...
Tipo: Conference Paper or Presentation Palavras-chave: Agricultura de Precisão; Tecnologia da Informação; Internet; Fruticultura; Horticultura; Precision Agriculture; Information Technology; Internet; Fruit; Vegetable; Crop Production/Industries; Farm Management.
Ano: 2008 URL: http://purl.umn.edu/112685
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GoogleEarth for Precision Agriculture (Aswan, Egypt) CIGR Journal
Farah, Ashraf.
Google Earth is a virtual globe, map and geographical information software. It maps the Earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS 3D globe. GoogleEarth® has become recently the ultimate source of spatial data and information for private and public decision-support systems. GoogleEarth is a strong tool for precision agriculture. It could be used for farm planning, field mapping, soil sampling, crop scouting, crop health monitoring, variable rate applications, and yield mapping. Also, Google Earth presents a base layer of an aerial photographic image that is geo-located. Different layers of information could be used with this base layer such as soil maps, mineral deposits and crop productivity. This...
Tipo: Info:eu-repo/semantics/article Palavras-chave: GoogleEarth; Precision Agriculture.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4370
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Integration of plant-based canopy sensors for site-specific nitrogen management. Repositório Alice
SHIRATSUCHI, L. S..
The soil's nitrogen (N) supply can vary drastically in the field, spatially as well as temporally making any soil prediction difficult even with very detailed mapping. Consequently, a plant-based approach wherein the measured canopy can indicate the N needs in a reactive and spatially-variable way can be a better approach than mapping, because integrate the soil N supply and translate the crop need on-the-go. The first experiment evaluated the performance of various spectral indices for sensing N status of corn, where spectral variability might be confounded by water-induced variations in crop reflectance. We found that water and previous crops effects on vegetation indices (VI) must be considered, and also that some VIs are less susceptible to water with...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Nitrogênio; Sensoreamento; Agricultura de precisão; Fertilization; Nitrogen; Precision Agriculture.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/928933
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Sampling grids used to characterise the spatial variability of pH, Ca, Mg and V% in Oxisols Rev. Ciênc. Agron.
Cherubin,Maurício Roberto; Santi,Antônio Luis; Eitelwein,Mateus Tonini; Da Ros,Clovis Orlando; Bisognin,Mateus Bortoluzi.
Knowledge of spatial variability is an important factor to be considered in planning a program of soil sampling and crop management under precision agriculture (PA). In this context, the aim of this work was to evaluate the efficiency of the dimensions of sampling grids used in the state of Rio Grande do Sul (RS), Brazil to characterise the spatial variability of the attributes pHwater, base saturation (V%), calcium (Ca) and magnesium (Mg) levels. The study was carried out on 30 agricultural sites located in the northern region of RS, having soils classified as Oxisols and managed using the tools of PA. The dimensions of the grids under study were: 100 x 100 m (10 areas), 142 x 142 m (10 areas) and 173 x 173 m (10 areas). Soil was collected at a depth of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil acidity; Precision Agriculture; Soil sampling; Geostatistics.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000400004
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The Impact of Precision Agriculture Techniques on Kentucky Grain Farmers' Carbon Footprint AgEcon
Brown, Rachael M.; Dillon, Carl R.; Schieffer, Jack; Shockley, Jordan M..
This study estimates the carbon footprint of a Henderson County, Kentucky grain farmer under different production strategies; traditional farming and precision agriculture technologies. Four constrained optimization, whole farm analysis models were formulated under no-till conditions. One of the models was optimized without utilizing any precision agriculture techniques and was used as a base model to compare the other three models which incorporated precision agriculture technologies (PAT). The three technologies investigated include sub-meter auto-steer, RTK auto-steer and automatic section control (ASC). These models are used to analyze the different production systems to determine if said technologies increase expected net returns and enhance the...
Tipo: Presentation Palavras-chave: Resource and Environmental Economics; Production Economics; Precision Agriculture; Farm Management; Policy; Agricultural and Food Policy; Environmental Economics and Policy; Farm Management; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012 URL: http://purl.umn.edu/119802
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Uso de técnicas de la información para estimar parámetros estratégicos en la operación de los distritos de riego. Colegio de Postgraduados
Caballero Luis, Josafat.
Mediante el presente trabajo se propone el uso de técnicas de la información para estimar parámetros estratégicos en la operación de los distritos de riego a través del uso de sistemas de información geográfica y técnicas de percepción remota, debido a que la CONAGUA cada vez dispone de poco personal técnico y requiere la toma de decisiones oportunas en la administración del agua disponible. Para esto, se analizaron algunos estudios de casos en donde éstos sistemas ya fueron aplicados en ciertos distritos de riego como el manejo y actualización del padrón de usuarios, el inventario de infraestructura, la caracterización de suelos agrícolas, la estimación de superficie sembrada, de la producción agrícola y de la evapotranspiración. Los avances obtenidos...
Palavras-chave: Distritos de Riego; Sistema de Información Geográfica; Percepción Remota; Agricultura de Precisión; Indices de Vegetación; Irrigation Districts; Geographic Information System; Remote Sensing; Precision Agriculture; Vegetation Index; Hidrociencias; Maestría Tecnológica.
Ano: 2013 URL: http://hdl.handle.net/10521/2057
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VLIT NODE Sensor Technology and Prefarm AgEcon
Charvat, Karel; Musil, Marek; Krivanek, Zbynek.
Precision farming systems are based on a detailed monitoring of information and data that are necessary for successful decision-making in crop production. The system is designed for data collection from several resources. In past years an extensive research and development work has been done in the field of wireless sensor networks (WSN) in the world. When a wireless sensor network (WSN) is used for agricultural purposes, it has to provide first of all a long-reach signal. The present paper describes new long distance RFID based technology implementation - VLIT NODE.
Tipo: Journal Article Palavras-chave: Wireless Sensor Network; Precision Agriculture; RFID.; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; GA; IN.
Ano: 2010 URL: http://purl.umn.edu/96875
Registros recuperados: 9
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