Tag Archives: soil mapping.

622–628 S. Aksu,, Ü. Kızıl, L. Genç and A.M. Yıldız
Web and android applications for district level nutrient management planning
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Web and android applications for district level nutrient management planning

S. Aksu¹,*, Ü. Kızıl¹, L. Genç² and A.M. Yıldız¹

¹ Çanakkale Onsekiz Mart University, Faculty of Agriculture, Dept. of Agricultural Structures and Irrigation, TR17020 Çanakkale, Turkey
² Çanakkale Onsekiz Mart University, College of Architecture and Design, Dept. of Urban and Regional Planning, TR17020 Çanakkale, Turkey
*Correspondence: aksusefa@comu.edu.tr

Abstract:

Livestock manure, often perceived as a waste problem, is in fact a valuable nutrient source for plants. Besides, it does not only provide nutrients to plants, also improves soil structure, aeration properties and water retention capacity. A district level manure management study was conducted in Çanakkale/Turkey for developing a web based application for animal manure application rates. The procedure and the outcomes of the study were made available for better use of producers. Therefore, a web and an android based application was developed using java programming language coupled with android job package that accessed database for interaction and presentations of the results. The database was created with PHP scripting language to provide soil analysis results (electrical conductivity, pH, lime, organic matter, nitrogen, phosphorus, potassium, iron, manganese, copper and zinc) and manure application rates for major cultivars (paddy rice, maize, wheat, processing and table tomato) within the Gümüşçay district of Çanakkale and uploaded on a server. Then, a browser access interface to specific web page built up with Massachusetts Institute of Technology (MIT) app inventor 2 for android devices and published on official android market.

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751–759 M. Kroulik,, P. Zabransky, J. Holub and J. Chyba
Development and implementation of data collection technologies for digital mapping of soil electric conductivity
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Development and implementation of data collection technologies for digital mapping of soil electric conductivity

M. Kroulik¹,*, P. Zabransky², J. Holub¹ and J. Chyba¹

¹ Czech University of Life Sciences, Faculty of Engineering, Department of Agricultural Machines. Kamycka 129, CZ165 21 Prague 6 – Suchdol, Czech Republic
² Czech University of Life Sciences, Faculty of Agrobiology, Food and Natural Resources, Department of Agroecology and Biometeorology. Kamycka 129, CZ165 21 Prague 6 – Suchdol, Czech Republic
*Correspondence: kroulik@tf.czu.cz

Abstract:

One of the main preconditions for the introduction of soil protection measures and sustainable use of a soil is to strengthen the knowledge base about the specific habitats characteristics with high spatial resolution and adequate interventions to these properties. One of the most common sensors used to describe the level of soil variability are devices that measure the electric conductivity of the soil.
Platform for the electrical conductivity measuring has been developed and implemented into the standard combined machines for the tillage and seeding, using an existing work tools as part of the platform. Within the field work the series of measurements was conducted with this machine and platform and data of electrical conductivity were collected. On the same field as a reference method electrical conductivity was measured by an electromagnetic induction probe EM38 MK2. Compared data from the measuring platform and the EM38 MK2 probe showed a high correlation value. The experiments demonstrate the possibilities of technical solutions of soil conductivity measurement implementation on tillage and seeding machines where by a modification of selected tillage and seeding machines together with incorporation of sensors directly onto the work tools is possible to obtain measuring platform that enables data collection directly during operation of the machine on the field.

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95-100 M. Kroulík, J. Chyba and V. Brant
Measurement of tensile force at the fundamental tillage using tractor’s build-in sensor and external sensor connected between machines and their comparison
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Measurement of tensile force at the fundamental tillage using tractor’s build-in sensor and external sensor connected between machines and their comparison

M. Kroulík*, J. Chyba and V. Brant

Czech University of Life Sciences Prague, Kamýcká 129, Prague 6 – Suchdol, 165 21, Czech Republic; *Correspondence: kroulik@tf.czu.cz

Abstract:

The value of tensile force during soil tillage is crucial for estimating the energy performance of trailed machines. For tensile force measurements, a mouldboard plough with working width of 4 m was used. The ploughing speed was approximately 7 km h-1. Measurements were carried out on two plots with different soil texture. Loam-sandy soil dominated on the first plot, whereas clay soil dominated on the second one. The slopes of the plots are 1.1° and 2.4° respectively. Both plots have been left without stubble modification after harvest. The dynamometer LUKAS type S-38 was used for measuring tensile force. The dynamometer was placed on a hinge, which was positioned between two tractors. As a second method of tensile force measurement, electro-hydraulic hitch sensors were used, from which the values were recorded. The obtained values of tensile force were approximately 30 kN on the first plot and 54.3 kN on the second plot. The interdependence values of tensile forces between internal and external sensors showed a high coefficient of determination R2 = 0.91 in regression data analysis. The comparison of tensile force measurements using a special dynamometer and electro-hydraulic tractor sensor proved that the outputs of serial sensors can be used for the continuous monitoring of tensile forces during operating the machine. The automated storage of data collected from tractor sensors during tillage can greatly simplify this work, while no additional expenses are incurred to obtain data. Thus, the findings can be used to determine the variability of the land.

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