SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Whipker, Linda D.; Akridge, Jay T..

Precision technologies are now well-integrated into the agricultural industry – both at the farm level and at the crop input dealer level. No longer are crop input dealers only using the technologies to bring new services to their customers, they are also utilizing the technology in their own businesses to improve the efficiency and effectiveness of their operations. In early 2008, Crop Life magazine and Purdue University’s Center for Food and Agricultural Business conducted a survey for the 13th consecutive year to assess the adoption of precision agriculture practices in the U.S. from the perspective of the retail crop input dealer. The questionnaire was mailed to 2500 retail crop input dealerships across the U.S. A total of 298 questionnaires were...

Tipo: Working or Discussion Paper

Palavras-chave: Precision agriculture; Geographic information systems (GIS); Crop input dealer; Variable rate application; Site-specific agriculture; Technology adoption.; Agribusiness; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies; Q13; O30; L84.

Ano: 2008

URL: http://purl.umn.edu/46427

Green Technologies for a More Sustainable Agriculture

Hrubovcak, James; Vasavada, Utpal; Aldy, Joseph E..

For U.S. agriculture to continue along a sustainable path of economic development, further production increases must be generated by technologies that are both profitable and more environmentally benign. In this context, we assess the role of these green or sustainable technologies in steering agriculture along a more sustainable path. However, the lack of markets for the environmental attributes associated with green technologies can limit their development. In addition, simply making a technology available does not mean it will be adopted. Experience with green technologies such as conservation tillage, integrated pest management, enhanced nutrient management, and precision agriculture demonstrates that even when technologies are profitable, barriers to...

Tipo: Report

Palavras-chave: Sustainable agriculture; Natural capital; Nonrenewable resources; Renewable resources; Environmental services; Green technology; Integrated pest management; Conservation tillage; Enhanced nutrient management; Precision agriculture; Environmental Economics and Policy; Farm Management.

Ano: 1999

URL: http://purl.umn.edu/33721

A Strategic Approach to the Implementation of Precision Agriculture Principles in Cash Crop Farming

Maine, Ntsikane; Nell, Wilhelm T..

Precision agriculture is one of the important agricultural technologies that can assist farmers and managers in promoting long-term success. Precision agriculture can help farm managers increase their management capacity, which is of utmost importance in the highly competitive modern agriculture. Increased yields and/or efficient input use can also be achieved with precision agriculture. Precision agriculture also involve a large capital outlay and requires skills in interpreting the masses of generated data. Modern farmers have to engage in pro-active thinking with regard to suitable agricultural systems that can enhance sustainable success of their farming businesses. Farm managers who are contemplating on getting involved in precision agriculture need...

Cost Sensitivity Analysis on the Optimal Location of Technology Providers In Kentucky

Palavras-chave: Precision agriculture; Strategic approach; Farming; Farming success; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.

Ano: 2005

URL: http://purl.umn.edu/24259

Shockley, Jordan M.; Saghaian, Sayed H.; Dillon, Carl R..

A warehouse location model was utilized in order to expand upon previous research. The aim was to more accurately depicting the optimal location for an agribusiness firm providing precision agriculture technologies in the state of Kentucky. It was determined that the optimal solution was Muhlenberg County.

Farmers’ Perception of Precision Technology: The Case of Autosteer Adoption by Cotton Farmers

Palavras-chave: Warehouse location model; Precision agriculture; Agribusiness; Agribusiness.

Ano: 2007

URL: http://purl.umn.edu/34875

D'Antoni, Jeremy M.; Mishra, Ashok K.; Powell, Rebekah R.; Martin, Steven W..

Precision agriculture and autosteer technology are, overall, profitable investments for farmers, as previous literature has established. However, what has not been investigated is whether or not farmers perceive these technologies as such. This research postulates that cotton farmers must see potential for higher profits as a result of adopting precision technologies in order to adopt it. Using the 2009 Southern Cotton Precision Farming Survey and multinomial logit model, this research investigates farmers’ perception of precision agriculture and how those perceptions impact adoption of the autosteer GPS guidance system. Autosteer adoption was found to be significant and positively related to the perceived future importance of precision agriculture as...

Tipo: Presentation

Palavras-chave: Farmers’ perception; Precision agriculture; Autosteer; Multinomial logit estimation; Technology adoption; Input cost saving.; Agribusiness; Agricultural Finance; Farm Management; Financial Economics; Labor and Human Capital; Production Economics; Risk and Uncertainty; Q12; Q16.

Ano: 2012

URL: http://purl.umn.edu/119734

New Precision Agriculture Technology Adoption for Dealers under Imperfect Market

Jia, Haili.

Replaced with revised version of paper 02/23/07.

Using Spatial Analysis to Study the Values of Variable Rate Technology and Information

Palavras-chave: Precision agriculture; Real option; Demand uncertainty; New technique uncertainty; Noise; Research and Development/Tech Change/Emerging Technologies.

Ano: 2007

URL: http://purl.umn.edu/34951

Bullock, David S.; Lowenberg-DeBoer, James.

We present a review of the last few years' literature on the economic feasibility of variable rate technology in agriculture. Much of the research on this topic has involved the estimation of site-specific yield response functions. Data used for such estimations most often inherently lend themselves to spatial analysis. We discuss the different types of spatial analyses that may be appropriate in estimating various types yield response functions. Then, we present a taxonomy for the discussion of the economics of precision agriculture technology and information. We argue that precision agriculture technology and information must be studied together since they are by nature economic complements. We contend that longer-term, multi-location agronomic...

2009 PRECISION AGRICULTURAL SERVICES DEALERSHIP SURVEY RESULTS

Palavras-chave: Precision agriculture; Spatial econometrics; Variable rate technology; Research and Development/Tech Change/Emerging Technologies; C31; O33; Q16.

Ano: 2006

URL: http://purl.umn.edu/25393

Whipker, Linda D.; Akridge, Jay T..

In the spring of 2009, Crop Life magazine and Purdue University’s Center for Food and Agricultural Business conducted a survey of crop input dealers for the 14th consecutive year. In February, a questionnaire was mailed to 2500 Crop Life retail crop input dealership readers across the US. (See Appendix I to this report for a copy of the questionnaire.) A total of 258 questionnaires were returned, with 241 being usable. This provided an effective response rate of 9.6 percent, the lowest response rate in the 14 year history of the project. (In prior years, response rates have ranged from a high of 38 percent in 1996 to a low of 11 percent in 2001 and 2008.) Consistent with previous surveys, dealerships were asked questions about the types of precision...

Tipo: Working or Discussion Paper

Ano: 2009

URL: http://purl.umn.edu/56111

Production Cost and the Sequential Adoption of Precision Technology

Ebel, Robert M.; Schimmelpfennig, David E..

Tipo: Presentation

Palavras-chave: Production cost; Precision agriculture; Technology adoption; Agribusiness; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies.

Ano: 2012

URL: http://purl.umn.edu/124393

Why Don't Farmers Adopt Precision Farming Technologies in Cotton Production?

Paudel, Krishna P.; Pandit, Mahesh; Mishra, Ashok K.; Segarra, Eduardo.

We used the 2009 Southern Cotton Precision Farming Survey data collected from farmers in twelve U.S. states (Alabama, Arkansas, Florida, Georgia, Louisiana, Missouri, Mississippi, North Carolina, South Carolina, Tennessee, Texas, and Virginia) to understand why farmers do not adopt seemingly profitable precision farming technology. Farmers provided cost, time constraint, satisfaction with the current practice and other as reasons for not adopting precision farming technology. Results from a multinomial logit regression model indicated that manure application on field, more formal education, larger farm size, participation in conservation easement or agricultural easement generally decreases the probability of nonadoption of precision agriculture in cotton...

Economic Analysis of Phosphorus Applications under Variable and Single-Rate Applications in the Bothaville District

Palavras-chave: Precision agriculture; Technology adoption; Multinomial logit; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies; C25; Q16.

Ano: 2011

URL: http://purl.umn.edu/104828

Maine, Ntsikane; Nell, Wilhelm T.; Lowenberg-DeBoer, James; Alemu, Zerihun Gudeta.

Variable-rate (VR) application of inputs in South African cash crop production is mainly concerned with fertilizer and lime, and this indicates the importance of these inputs in cash crop production. However, the profitability of VR application of inputs has not yet been investigated under South African conditions. This paper studies the maize yield response to variable-rate application of phosphorus (P) and the profitability thereof in South Africa, on the basis of data collected on a 104-hectare experimental field on a farm in the Bothaville district. The strip-plot design of 180 strips was used for this on-farm research experiment. This design involved treatments that run in the same direction across the field as planting and harvesting. The objective...

Tipo: Journal Article

Palavras-chave: Precision agriculture; Precision farming; Site-specific phosphorus management; Variable-rate application; Fertilizer; Yield response; South Africa; Crop Production/Industries.

Ano: 2007

URL: http://purl.umn.edu/7047

Economics of the Variable Rate Technology Investment Decision for Agricultural Sprayers

Mooney, Daniel F.; Larson, James A.; Roberts, Roland K.; English, Burton C..

Producers lack information about the profitability of variable rate technology (VRT) for agricultural sprayers. An economic framework was developed to evaluate the returns required to pay for VRT investments. Payback variables included input savings, yield gains, and reduced application costs. We illustrate the framework with two example investment scenarios.

On the Economics of Precision Agriculture: Technical, Informational and Environmental Aspects

Palavras-chave: Capital budgeting; Decision aid; Farm management; Precision agriculture; Map-based; Sensor-based; Site-specific management; Variable rate technology; Farm Management; Q10; Q16.

Ano: 2009

URL: http://purl.umn.edu/46860

Anvec, Tihomir; Whelan, Brett; McBratney, Alex.

The paper presents an integrated framework of biophysical and economic modelling as a novel approach towards precision agriculture research. A theoretical economic model determining the optimal number of precision agriculture management units within a given field of land is presented. The model is expanded to account for the value of the research information provided be the precision agriculture researchers. Since the inherent environmental values associated with precision agriculture are often omitted from the economic analysis, an attempt is made to incorporate these values into the model. The versions of the model are empirically tested using the data available.

Precision livestock tools to improve products and processes in broiler production: a review

Palavras-chave: Economics; Precision agriculture; Environment; Information; Agribusiness; Environmental Economics and Policy.

Ano: 2004

URL: http://purl.umn.edu/58362

Rev. Bras. Ciênc. Avic.

Mollo,MN; Vendrametto,O; Okano,MT.

Economic growth and production process development require technological support. Technology changes production functions, enabling a higher number of goods to be produced using the same amount of input. In this review, we discuss research and development in information technology that has led to innovative actions, with the new generation of tools, known as precision agriculture tools, that can be applied in Brazilian poultry production. In this context, research and development have focused on producing technological innovations based on increasingly specialized tools that go beyond human mind power, and are related to the acquisition, access, and processing of a huge number of data. The technology generated to date has assimilated the knowledge of...

Optical crop sensor for variable-rate nitrogen fertilization in corn: i - plant nutrition and dry matter production

Palavras-chave: Agribusiness; Decision support system; Precision agriculture; Research and development; Technological innovation.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400001

Bragagnolo,Jardes; Amado,Telmo Jorge Carneiro; Nicoloso,Rodrigo da Silveira; Jasper,Joerg; Kunz,Junior; Teixeira,Tiago de Gregori.

Variable-rate nitrogen fertilization (VRF) based on optical spectrometry sensors of crops is a technological innovation capable of improving the nutrient use efficiency (NUE) and mitigate environmental impacts. However, studies addressing fertilization based on crop sensors are still scarce in Brazilian agriculture. This study aims to evaluate the efficiency of an optical crop sensor to assess the nutritional status of corn and compare VRF with the standard strategy of traditional single-rate N fertilization (TSF) used by farmers. With this purpose, three experiments were conducted at different locations in Southern Brazil, in the growing seasons 2008/09 and 2010/11. The following crop properties were evaluated: above-ground dry matter production, nitrogen...

Cacao Crop Management Zones Determination Based on Soil Properties and Crop Yield

Palavras-chave: Site-specific management; Optical spectrometry; Precision agriculture; Soil fertility.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500018

Carvalho,Perla Silva Matos de; Franco,Laís Barreto; Silva,Samuel de Assis; Sodré,George Andrade; Queiroz,Daniel Marçal de; Lima,Julião Soares de Souza.

ABSTRACT: The use of management zones has ensured yield success for numerous agricultural crops. In spite of this potential, studies applying precision agricultural techniques to cacao plantations are scarce or almost nonexistent. The aim of the present study was to delineate management zones for cacao crop, create maps combining soil physical properties and cacao tree yield, and identify what combinations best fit within the soil chemical properties. The study was conducted in 2014 on a cacao plantation in a Nitossolo Háplico Eutrófico (Rhodic Paleudult) in Bahia, Brazil. Soil samples were collected in a regular sampling grid with 120 sampling points in the 0.00-0.20 m soil layer, and pH(H2O), P, K+, Ca2+, Mg2+, Na+, H+Al, Fe, Zn, Cu, Mn, SB, V, TOC,...

Multivariate analysis and geostatistics of the fertility of a humic rhodic hapludox under coffee cultivation

Palavras-chave: Precision agriculture; Unsupervised classification; Soil fertility.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100312

Silva,Samuel de Assis; Lima,Julião Soares de Souza.

The spatial variability of soil and plant properties exerts great influence on the yeld of agricultural crops. This study analyzed the spatial variability of the fertility of a Humic Rhodic Hapludox with Arabic coffee, using principal component analysis, cluster analysis and geostatistics in combination. The experiment was carried out in an area under Coffea arabica L., variety Catucai 20/15 - 479. The soil was sampled at a depth 0.20 m, at 50 points of a sampling grid. The following chemical properties were determined: P, K+, Ca2+, Mg2+, Na+, S, Al3+, pH, H + Al, SB, t, T, V, m, OM, Na saturation index (SSI), remaining phosphorus (P-rem), and micronutrients (Zn, Fe, Mn, Cu and B). The data were analyzed with descriptive statistics, followed by principal...

Strategy of specification of management areas: rice grain yield as related to soil fertility

Palavras-chave: Coffea arabica L; Precision agriculture; Principal components; Cluster analysis.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200016

Dalchiavon,Flávio Carlos; Carvalho,Morel de Passos e; Montanari,Rafael; Andreotti,Marcelo.

It is well-known nowadays that soil variability can influence crop yields. Therefore, to determine specific areas of soil management, we studied the Pearson and spatial correlations of rice grain yield with organic matter content and pH of an Oxisol (Typic Acrustox) under no- tillage, in the 2009/10 growing season, in Selvíria, State of Mato Grosso do Sul, in the Brazilian Cerrado (longitude 51º24' 21'' W, latitude 20º20' 56'' S). The upland rice cultivar IAC 202 was used as test plant. A geostatistical grid was installed for soil and plant data collection, with 120 sampling points in an area of 3.0 ha with a homogeneous slope of 0.055 m m-1. The properties rice grain yield and organic matter content, pH and potential acidity and aluminum content were...

SPATIAL DEPENDENCE OF ELECTRICAL CONDUCTIVITY AND CHEMICAL PROPERTIES OF THE SOIL BY ELECTROMAGNETIC INDUCTION

Palavras-chave: Precision agriculture; Soil fertility; Geostatistics; Spatial variability; Oryza sativa.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100005

Machado,Flavia Cristina; Montanari,Rafael; Shiratsuchi,Luciano Shozo; Lovera,Lenon Henrique; Lima,Elizeu de Souza.

Brazilian soils have natural high chemical variability; thus, apparent electrical conductivity (ECa) can assist interpretation of crop yield variations. We aimed to select soil chemical properties with the best linear and spatial correlations to explain ECa variation in the soil using a Profiler sensor (EMP-400). The study was carried out in Sidrolândia, MS, Brazil. We analyzed the following variables: electrical conductivity - EC (2, 7, and 15 kHz), organic matter, available K, base saturation, and cation exchange capacity (CEC). Soil ECa was measured with the aid of an all-terrain vehicle, which crossed the entire area in strips spaced at 0.45 m. Soil samples were collected at the 0-20 cm depth with a total of 36 samples within about 70 ha. Classical...

Spatial relationships between soil attributes and corn yield in no-tillage system

Palavras-chave: Precision agriculture; Electrical conductivity; Management zones.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401112

Rodrigues,Marcos Sales; Corá,José Eduardo; Fernandes,Carolina.

Soil properties play an important role in spatial variability of crop yield. However, a low spatial correlation has generally been observed between maps of crop yield and of soil properties. The objectives of the present investigation were to assess the spatial pattern variability of soil properties and of corn yield at the same sampling intensity, and evaluate its cause-and-effect relationships. The experimental site was structured in a grid of 100 referenced points, spaced at 10 m intervals along four parallel 250 m long rows spaced 4.5 m apart. Thus, points formed a rectangle containing four columns and 25 rows. Therefore, each sampling cell encompassed an area of 45 m² and consisted of five 10 m long crop rows, in which the referenced points...