Diagnosis of Performance of Four Tillage Methods by Analytical Hierarchy Procedure (AHP) and Overall Tilth Index in Clay Vertisols

• Authors: Abdlkarim D. Elfadil , Omran Musa Abbas , Adil Bashir Karar , Hassan I. Mohammed
• Languages of publication: EN

Abstracts

EN

This study was carried out during seasons 2018/2019, and 2019/2020, in Tayba Block-the Sudan - Gezira central clay plains, to evaluate the field performance of four land preparation methods using three tillage equipment: chisel plow "intensive tillage", disc harrow "medium tillage", ridger "minimum or reduced tillage" and no tillage machine. An overall tilth index to reflect field performance of tillage methods was determined from four measured soil tilth indicators (bulk density, porosity, aggregate uniformity, and penetration resistance). Diagnosis of land preparation methods was made using analytical hierarchy procedure (AHP) for ranking tilth indicators by weight assignment and determination of overall tilth index using a linear relation. The results show that Bulk density of the soil surface layer was reduced by tillage implements compared to no till. High significant difference at 1 % level was observed between reduced or no tillage and intensive tillage by chisel or disc harrow on average percentage Soil porosity. Bulk density and Soil porosity are inter-related with similar trend. Aggregate stability showed highest value with no till treatment followed by chisel plow, while those obtained by harrow or ridger implements do not differ significantly. Penetration resistance was significantly lowered by tillage implement compared with using no tillage machine. The highest reduction is achieved by disc harrow followed by ridger and the least reduction is made by chisel plow. Penetration resistance is interrelated to Bulk density. Using analytical hierarchy procedure ranked the tillage indicators in descending order by weight values of 1.01, 0.62, 0.29 and 0.12 for Penetration resistance, Bulk density, Porosity, and Aggregate particle stability respectively. The diagnosis of tillage alternatives by development of the overall tillage index resulted in ranking tillage methods in descending order of preference as: ridger, disc harrow, chisel plow, and no tillage machine. It is thus recommended to use reduced tillage "ridging only" as the most technically feasible tillage method achieve an optimal seedbed with minimum energy input.

Keywords

EN

Aggregate particle stability; Analytical Hierarchy Procedure (AHP); Bulk density; Penetration resistance; Porosity; Tillage methods; Tilth Index; Vertisols

Discipline

• AGRICULTURAL_ENGINEERING: AGRICULTURAL ENGINEERING

• Publisher: Scientific Publishing House „DARWIN”
• Journal: World News of Natural Sciences
• Year: 2022
• Volume: 44
• Pages: 176-191

Contributors

author

Abdlkarim D. Elfadil

• Department of Agricultural Engineering, Faculty of Agricultural Sciences, University of Gezira, Wad Madani, Sudan

author

Omran Musa Abbas

• Department of Agricultural Engineering, College of Agricultural Studies, Sudan University of Science and Technology, Khartoum, Sudan

author

Adil Bashir Karar

• Department of Agricultural Engineering, Faculty of Engineering, Sinnar University, Sinnar, Sudan

author

Hassan I. Mohammed

• Department of Agricultural Engineering, College of Agricultural Studies, Sudan University of Science and Technology, Khartoum, Sudan

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• Document Type: article