Satellite-based Positioning Systems for Precision Agriculture

2018 ◽  
pp. 25-35 ◽  
Author(s):  
Timothy Stombaugh
Keyword(s):  
Precision Agriculture ◽  
Positioning Systems

scholarly journals Reducing Topdressing N Fertilization with Variable Rates Does Not Reduce Maize Yield

2021 ◽  
Vol 13 (14) ◽  
pp. 8059
Author(s):  
Calogero Schillaci ◽  
Tommaso Tadiello ◽  
Marco Acutis ◽  
Alessia Perego
Keyword(s):  
Precision Agriculture ◽  
Stem Elongation ◽  
Maize Yield ◽  
Application Rate ◽  
N Fertilization ◽  
Economic Benefits ◽  
Growth Monitoring ◽  
Fixed Rate ◽  
Positioning Systems ◽  
Significant Difference

Proximal sensing represents a growing avenue for precision fertilization and crop growth monitoring. In the last decade, precision agriculture technology has become affordable in many countries; Global Positioning Systems for automatic guidance instruments and proximal sensors can be used to guide the distribution of nutrients such as nitrogen (N) fertilization using real-time applications. A two-year field experiment (2017–2018) was carried out to quantify maize yield in response to variable rate (VR) N distribution, which was determined with a proximal vigour sensor, as an alternative to a fixed rate (FR) in a cereal-livestock farm located in the Po valley (northern Italy). The amount of N distributed for the FR (140 kg N ha−1) was calculated according to the crop requirement and the regional regulation: ±30% of the FR rate was applied in the VR treatment according to the Vigour S-index calculated on-the-go from the CropSpec sensor. The two treatments of N fertilization did not result in a significant difference in yield in both years. The findings suggest that the application of VR is more economically profitable than the FR application rate, especially under the hypothesis of VR application at a farm scale. The outcome of the experiment suggests that VR is a viable and profitable technique that can be easily applied at the farm level by adopting proximal sensors to detect the actual crop N requirement prior to stem elongation. Besides the economic benefits, the VR approach can be regarded as a sustainable practice that meets the current European Common Agricultural Policy.

Role of Telecommunications in Precision Agriculture

2011 ◽  
pp. 252-266
Author(s):  
James M. McKinion
Keyword(s):  
Precision Agriculture ◽  
Low Cost ◽  
New Technology ◽  
Local Area ◽  
Variable Rate ◽  
Positioning Systems ◽  
Storage And Retrieval ◽  
Data Files ◽  
Commercial Sources

Precision agriculture has been made possible by the confluence of several technologies: geographic positioning systems, geographic information systems, image analysis software, low-cost microcomputerbased variable rate controller/recorders, and precision tractor guidance systems. While these technologies have made precision agriculture possible, there are still major obstacles which must be overcome to make this new technology accepted and usable. Most growers will not do image processing and development of prescription maps themselves but will rely upon commercial sources. There still remains the challenge of storage and retrieval of multi-megabytes of data files for each field, and this problem will only continue to grow year by year. This chapter will discuss the various wireless technologies which are currently being used on three proof-of-concept farms or areas in Mississippi, the various data/ information intensive precision agriculture applications which use wireless local area networking and Internet access, and the next generation technologies which can immensely propel precision agriculture to widespread use in all of agriculture.

scholarly journals Pursuing Precision Horticulture with the Internet and a Spreadsheet

2000 ◽  
Vol 10 (3) ◽  
pp. 458-467 ◽  
Author(s):  
Timothy L. Righetti ◽  
Michael D. Halbleib
Keyword(s):  
Precision Agriculture ◽  
State Of The Art ◽  
Information Analysis ◽  
Process Data ◽  
Positioning Systems ◽  
Systems Software ◽  
Global Positioning ◽  
Technology Applications ◽  
Sales Industry ◽  
Analytical Tools

Agriculture is changing. State-of-the-art computer systems that use GPS (global positioning systems) data, GIS (geographic information systems) software, remotely sensed images, automated sampling, and information analysis systems are transforming growers' ability to produce their crops. Currently, the farm service and agricultural sales industry, rather than the grower direct most information technology applications. Precision agriculture must become an information-driven and grower-driven process. Data evaluation has to be made simpler, less time consuming, and inexpensive. The purpose of this paper is to outline potential strategies and demonstrate how information can be processed and evaluated with readily available and inexpensive analytical tools.

scholarly journals The accuracy of farm machinery for precision agriculture: a case for fertilizer application

1997 ◽  
Vol 45 (1) ◽  
pp. 199-215 ◽  
Author(s):  
D. Goense
Keyword(s):  
Precision Agriculture ◽  
Fertilizer Application ◽  
Positioning Accuracy ◽  
Site Specific ◽  
Positioning Systems ◽  
Application Rates ◽  
Small Influence ◽  
Variance Calculation ◽  
Field Variability ◽  
Different Levels

Work quality, capacity and reliability are important criteria for design and evaluation of farm equipment. With the introduction of precision agriculture, the ability to adapt to spatially variable soil and crop conditions, becomes an additional aspect. A calculation method was developed to find the precision of site specific fertilizer application. The variance between the required rate, RR, and the applied rate, AR, was used as a measure for precision. The theory of geo-statistics was used for variance calculation. Spreading patterns were evaluated for different levels of field variability, positioning accuracy and resolution of the required application rates. The shape of spreading patterns had small influence. The effect of the accuracy of positioning systems was dependent on the resolution of the required application rates and of the working width of independently controlled sections of the spreaders.

Role of Telecommunications in Precision Agriculture

2010 ◽  
pp. 836-850
Author(s):  
James M. McKinion
Keyword(s):  
Precision Agriculture ◽  
Low Cost ◽  
New Technology ◽  
Local Area ◽  
Variable Rate ◽  
Positioning Systems ◽  
Storage And Retrieval ◽  
Data Files ◽  
Commercial Sources

Precision agriculture has been made possible by the confluence of several technologies: geographic positioning systems, geographic information systems, image analysis software, low-cost microcomputer- based variable rate controller/recorders, and precision tractor guidance systems. While these technologies have made precision agriculture possible, there are still major obstacles which must be overcome to make this new technology accepted and usable. Most growers will not do image processing and development of prescription maps themselves but will rely upon commercial sources. There still remains the challenge of storage and retrieval of multi-megabytes of data files for each field, and this problem will only continue to grow year by year. This chapter will discuss the various wireless technologies which are currently being used on three proof-of-concept farms or areas in Mississippi, the various data/information intensive precision agriculture applications which use wireless local area networking and Internet access, and the next generation technologies which can immensely propel precision agriculture to widespread use in all of agriculture.

GIS in Agriculture

2011 ◽  
pp. 324-342 ◽  
Author(s):  
Anne Mims Adrian ◽  
Chris Dillard ◽  
Paul Mask
Keyword(s):  
Precision Agriculture ◽  
Crop Production ◽  
Economic Benefits ◽  
Geographic Information ◽  
Future Trends ◽  
Global Positioning Systems ◽  
Multiple Sources ◽  
Positioning Systems ◽  
Global Positioning ◽  
Production Agriculture

This chapter introduces the use of geographic information systems (GIS) and global positioning systems (GPS) in agricultural production. Precision agriculture is a catch-all term that describes using GIS and GPS technologies to manage specific areas of fields. Precision agriculture technologies use information from multiple sources to assist farmers in making crop production and management decisions based on the variability of production potential within fields. In this chapter, we describe the technologies used in production agriculture and we review some of the research associated with the use and future trends of these technologies. The purpose of this chapter is to define and explain GIS and GPS technologies used in agriculture and some of the economic benefits, impacts, and challenges of using these technologies.

scholarly journals Modelling approach for Data Analysis

2020 ◽  
pp. 29
Author(s):  
Stefanos Nastis
Keyword(s):  
Precision Agriculture ◽  
Geographical Information Systems ◽  
Information Access ◽  
Data Retrieval ◽  
Production Costs ◽  
Geographical Information ◽  
Positioning Systems ◽  
Variable Rate Technology ◽  
Information And Communication ◽  
Computer Based

A Decision Support System (DSS) is an interactive, computer-based system that helps users in making decisions. Besides the provision of storing and data retrieval, DSS enhances information access and retrieval functions. Designing a DSS for agriculture enables farmers to make effective decisions for higher yield and lower production costs. Precision agriculture, through the use of remote sensing, geographical information systems, global positioning systems, soil testing, yield monitors and variable rate technology, provide a number of inputs into the DSS. Case studies are presented where the DSS is designed to optimize specific inputs, such as water consumption or pesticide applications by employing precision agriculture through information and communication technology.

scholarly journals DESIGN AND EVALUATION OF A CONTROLLER TO ACHIEVE OPTIMUM SEEDING RATE WITH SPECIFIC SPATIAL MANAGEMENT IN AGRICULTURAL MACHINERY

2019 ◽  
Vol XLII-4/W18 ◽  
pp. 917-921
Author(s):  
A. Saberi ◽  
E. Khesali ◽  
M. Fakhri ◽  
H. Enayati ◽  
M. Koushapoor
Keyword(s):  
Control System ◽  
Precision Agriculture ◽  
Rotational Speed ◽  
Gear Ratio ◽  
Modern Technology ◽  
Variable Rate ◽  
Seeding Rate ◽  
Fixed Rate ◽  
Positioning Systems ◽  
Spatial Management

Abstract. Achieving optimal seeding rates in different areas of the field is very important for maximizing crop yield. Nowadays, spatial management of croplands as a modern technology has been recommended in precision agriculture systems. Agricultural inputs such as seed, fertilizers, herbicides, etc., should be optimized with field conditions in different areas. For example, fertilizing and moisture should being compatible. Due to changes in these two factors, optimum seeding rates might being different in a field; areas with higher fertility or higher soil moisture have the higher seed rates. An applicable method to reach the ability of variable seeding rates in agricultural machines is to add controllers to the conventional fixed seeding rate seed drills. In the spatial management technology for seeding in a variable rate, first, the map of required seed for seeding practice is prepared for each particle of the field and then loaded in the machine at GIS format. The controller controls the seed rate continuously using the GIS map and the spatial position of the machine at field is provided by positioning systems. The aim of this study was to select the best closed-loop variable rate control system for Hassia seed drill shifting from a fixed rate to variable rate. To this end, Assessment of the performance of a control system that mounted on the seed dill and vary the rotational speed of the seed metering drive shaft performed. The control system was included a 250-watt DC engine, gearbox with constant gear ratio, two encoders (first for sensing the seed drill speed and second for sensing the rotational speed of the engine), position receiver and navigation, DC engine controller, and a portable computer for collecting data. The response time for transmitting seeding rate by the controller was determined from low to high 4/7 seconds and from high to low 2/5 seconds.

scholarly journals Farmer experiences in achieving productivity gains through GPS

2008 ◽  
pp. 153-158
Author(s):  
M.J. Casey ◽  
T. Lambie ◽  
S. Bradbury ◽  
D. Johnston ◽  
M. Murney ◽  
...  
Keyword(s):  
Resource Use ◽  
Precision Agriculture ◽  
Environmental Constraints ◽  
Global Positioning Systems ◽  
Positioning Systems ◽  
Considerable Potential ◽  
Global Positioning ◽  
Fertiliser Application ◽  
Productivity Gains ◽  
Pastoral Farming

GPS (Global Positioning Systems) have considerable potential to assist pastoral farmers in coping with pressures they will face in future. These include managing resource use, environmental constraints and controlling farm input costs. Keywords: GPS, farm mapping, precision agriculture, pastoral farming, fertiliser application, irrigation, K-line, long lateral irrigation, traceability

scholarly journals Precision agriculture and conservation of coastal landscapes

2020 ◽  
pp. 580-585
Author(s):  
Francesca Vera Romano ◽  
Vincenzo Nunzio Scalcione ◽  
Paola D’Antonio ◽  
Chiara D'Antonio ◽  
Emilia Lacetra
Keyword(s):  
Precision Agriculture ◽  
Soil Type ◽  
Economic Benefits ◽  
Farm Management ◽  
Global Positioning Systems ◽  
Positioning Systems ◽  
Global Positioning ◽  
Coastal Landscapes

The application of Precision Agriculture strategies represents an opportunity for farmers to obtain economic benefits. In the area of Metapontino, as demonstrated by the experimentation conducted, the challenge of producing food and at the same time protecting nature and safeguarding biodiversity, it is possible to face it through the introduction of global positioning systems (GPS), a technology capable of integrating the information on soil type, climate, cultivar, crop and farm management, topography and economy.

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