Impact of soil compaction on the engineering properties of potato tubers  

作　　者：Mohamed K.Edrris Khalid A.Al-Gaadi Abdalhaleem A.Hassaballa ElKamil Tola Khalid A.M.Ahmed 

机构地区：[1]Precision Agriculture Research Chair,King Saud University,Riyadh 11451,Saudi Arabia [2]Department of Agricultural Engineering,College of Food and Agriculture Sciences,King Saud University,Riyadh 11451,Saudi Arabia [3]Department of Agricultural&Biological Engineering,Faculty of Engineering,Khartoum University,Khartoum,Sudan [4]Chair of Dates Industry and Technology,King Saud University,Riyadh 11451,Saudi Arabia

出　　处：《International Journal of Agricultural and Biological Engineering》2020年第2期163-167,共5页国际农业与生物工程学报（英文）

基　　金：The authors are grateful to the Deanship of Scientific Research,King Saud University for funding this study through the Vice Deanship of Scientific Research Chairs;The extensive cooperation and support extended by the staff in the Saudi Agricultural Development Company(INMA)farm in carrying out the field research work are gratefully acknowledged.

摘　　要：A study on a 30 hm2 field was conducted to assess the variability in soil compaction and to investigate its effect on the engineering properties of potato tubers in terms of tuber shape and key dimensions(length,width and thickness)and resistance to penetration,rupture and shear forces.Three soil compaction levels were spatially correlated with the engineering properties of potato tubers through linear regression and ANOVA test.The three compaction levels included a low level(C1)ranging between 1.2-1.9 MPa,a medium level(C2)with compaction levels between 2.0-2.3 MPa and a high level(C3)ranging between 2.4-2.9 MPa.Results revealed that there were no significant changes in the key tuber dimensions corresponding to the variability in soil compaction.However,inverse linear relationships were observed between soil compaction and the key tuber dimensions with R2 values of 77%,97%and 96%for length,width and thickness,respectively.Similarly,the soil compaction was shown to have no effect on the tuber resistance to compression and shear force.In contrast,the tuber resistance to penetration was significantly affected by soil compaction(p>F=0.0012).

关 键 词：COMPACTION potato tubers precision agriculture potato engineering properties 

分 类 号：S15[农业科学—土壤学]