Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List

Full text release has been delayed at the author's request until August 05, 2024

ETD Abstract Container

Abstract Header

Prescription Tillage Implementation via Creation of an Agronomic Rule Set and ISOBus Class III Control System for Achieving Spatially Variable Tillage

Schroeder, Brittany A
http://orcid.org/0000-0001-5378-2710
http://rave.ohiolink.edu/etdc/view?acc_num=osu1562937966106841

Abstract Details

2019, Doctor of Philosophy, Ohio State University, Food, Agricultural and Biological Engineering.
Farmers today are faced with two yield robbing factors within their fields: soil compaction and residue cover. Soil compaction reduces yield by restricting water permeability, reducing metabolic function of root cells and restricting root growth. Residue cover reduces yield by decreasing soil temperature, decreasing germination and emergence. Tillage can alleviate these potential problems by incorporating a portion of the residue cover and mitigating soil compaction. With crop residue and soil compaction varying across a field, it may prove beneficial for farmers to continually adjust tillage depths on a spatial basis. The ability, however, to know when and where these depth changes should occur and to implement these changes is not available to producers. This dissertation reports on a series of investigations designed to develop and demonstrate the first approach to spatially variable or “prescription” tillage. The investigations were designed to: 1) develop an agronomic rule set for generation of prescription tillage maps based on historical data (i.e. grain yield, equipment weights and traffic paths, crop residue and remote-sensed imagery); 2) develop a control system and associated algorithms to allow for independent actuation of soil engaging tools of a multi-tool tillage implement (Case IH Ecolo-Tiger 875) thereby enabling “prescription” tillage; 3) model draft and power requirements of independent tool depth settings and implement ground speeds for the created prescription enabled tillage system; and 4) develop and demonstrate an algorithm for ISOBus Class III implement control of tractor settings including gear selection and engine speed via throttle position. The agronomic rule set was capable of predicting the amount of required biomass residue or surface coverage according to soil elevation and soil type and adjusting the disk gang depth with required and available biomass residue. The agronomic was capable of adequately changing shank depth in association with the applied axle load and the traffic path of the grain cart. The control system and algorithms can completely raise and lower the implement in 3.5 seconds, allowing the implement to be raised or lowered for a transition zone in less than 7.6m with an operation speed of 8.1 km/hr. A draft force and engine power model was created to predict the draft force and engine power requirement for the prescription enabled tillage implement. With the inclusion of leveling disk depth and crumbling basket downforce, the revised draft force and engine power model could better predict the maximum predicted power and normal range of field data. An ISOBus Class tractor control rule set was created on tractor performance to allow feed-forward control of the tractor during field operations. When the feed-forward control was applied to shank depth adjustments, the ISOBus Class III algorithm prevented the tractor from becoming power limited and maintained productivity with significant fuel savings ranging from 6.2 to 37.4%. Through the implementation of prescription tillage and ISOBus Class III control, a reduction in fuel use would be provided to farmers for a fuel heavy operation, lowering input cost while maximizing yield potential through proper soil management for soil compaction and residue cover
Scott Shearer (Advisor)
John Fulton (Committee Member)
Elizabeth Hawkins (Committee Member)
Erdal Ozkan (Committee Member)
360 p.
Agricultural Engineering
soil compaction; biomass residue; residue cover; agronomic rule set; prescription tillage; implement control; ISOBus Class III; draft force; engine power; tractor performance; fuel use;

Recommended Citations

Citations

  • Schroeder, B. A. (2019). Prescription Tillage Implementation via Creation of an Agronomic Rule Set and ISOBus Class III Control System for Achieving Spatially Variable Tillage [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562937966106841

    APA Style (7th edition)

  • Schroeder, Brittany. Prescription Tillage Implementation via Creation of an Agronomic Rule Set and ISOBus Class III Control System for Achieving Spatially Variable Tillage. 2019. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1562937966106841.

    MLA Style (8th edition)

  • Schroeder, Brittany. "Prescription Tillage Implementation via Creation of an Agronomic Rule Set and ISOBus Class III Control System for Achieving Spatially Variable Tillage." Doctoral dissertation, Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562937966106841

    Chicago Manual of Style (17th edition)

osu1562937966106841
© 2019, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.