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Bioresource and Agricultural Engineering Commons™
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Articles 1 - 5 of 5
Full-Text Articles in Bioresource and Agricultural Engineering
A Demonstration Study Of Drainage Water Management In Eastern South Dakota, Ashik Sahani
A Demonstration Study Of Drainage Water Management In Eastern South Dakota, Ashik Sahani
Electronic Theses and Dissertations
Subsurface drainage is a common water management practice for improving crop production in poorly drained soils; however, the practice is associated with several environmental concerns such as nutrient losses to downstream surface waters. These environmental concerns from subsurface drainage have prompted interest in drainage water management strategies such as controlled drainage. This study assessed the agronomic and environmental impacts of drainage water management in eastern South Dakota by using two demonstration plots for controlled and conventional drainage. Drain flow, nitrate and dissolved phosphorous concentration in drain water, shallow groundwater, crop yield, residual soil nitrate, soil moisture and temperature, soil penetration …
Practical Irrigation Scheduling Program, Dominic Sween
Practical Irrigation Scheduling Program, Dominic Sween
BioResource and Agricultural Engineering
This senior project discusses the design, construction, and evaluation of an irrigation scheduling program that aids users in alfalfa irrigation management, with the potential for application with other crops. The program uses a very accurate irrigation prediction model that forecasts what the estimated irrigation need of each week will be, as well as the number of irrigations needed to satisfy the requirement. The model was found to predict the sum of the actual required weekly irrigation amount within less than 1% of the true value. The program was based off the single crop coefficient approach that was outlined previously by …
Cultivating Attachment For Crop Harvester Support Vehicle, Larry D. Swetnam, James H. Casada, Linus R. Walton
Cultivating Attachment For Crop Harvester Support Vehicle, Larry D. Swetnam, James H. Casada, Linus R. Walton
Biosystems and Agricultural Engineering Faculty Patents
A cultivator for attachment to a crop harvester including at least one tool frame member with soil tilling tools adjustably mounted relative thereto. A shaft is provided rotatably mounted relative to a support frame of the crop harvester. An actuating member is operatively connected to the shaft and the support frame for selectively imparting rotation to the shaft. A link is operatively, pivotally connected between the tool frame member and the support frame for guiding the frame member and the soil tilling tools between a raised position out of engagement with a ground surface and a lowered position into engagement …
Two Row Crop Harvester, Larry D. Swetnam, James H. Casada, Linus R. Walton
Two Row Crop Harvester, Larry D. Swetnam, James H. Casada, Linus R. Walton
Biosystems and Agricultural Engineering Faculty Patents
A two row harvesting aid including an easily adjustable, semi-floating, self-steering primary cutter head and an auxiliary second row attachment for harvesting row crops. Self-steering capabilities, a cut-off mechanism and a quick-adjustment are combined into a single integral unit on the primary harvester. Direction sensing is accomplished by utilizing a feeler arm or a set of feeler arms which follow the plant stock row or other protrusions or indentations. Forces detected by the guidance sensors are transmitted to a ring which is a part of the housing and/or shielding of the cut-off device. The steering forces may be transmitted to …
Crop Harvester Including A Quickly Adjustable Semi-Floating, Self-Steering Cutter Head, Larry D. Swetnam, James H. Casada, Linus R. Walton
Crop Harvester Including A Quickly Adjustable Semi-Floating, Self-Steering Cutter Head, Larry D. Swetnam, James H. Casada, Linus R. Walton
Biosystems and Agricultural Engineering Faculty Patents
The present invention is directed to an easily adjustable, semi-floating, self-steering cutter head for row crops. The present invention incorporates self-steering capabilities, a cut-off mechanism and a quick-adjustment into a single integral unit. Direction sensing is accomplished by utilizing a feeler arm or a set of feeler arms which follow the plant stock row or other protrusions or indentations. Forces detected by the guidance sensors are transmitted to a ring which is a part of the housing and/or shielding of the cut-off device. The steering forces may be transmitted to a steering system through a single connection. The present invention …