Combination comprising at least: - an agricultural soil-working tool comprising a chassis , at least one work element mounted to move on the said chassis in a movement comprising at least a translation along a direction (D1) substantially perpendicular to the soil (S) by first working depth adjustment means of the said at least one work element , and a reference element mounted to pivot relative to the chassis at least by means of two side arms and a pair of first pivot connections (A), - an additional agricultural tool , the said combination is characterized in that , in a mounted position (PM), the said additional agricultural tool is connected to the said agricultural soil-working tool by at least one connecting structure forming a deformable quadrilateral comprising: - a first segment (AB) located between the first pivot connection (A) and a second pivot connection (B) connecting the additional agricultural tool to the side arm of the agricultural soil-working tool , - a second segment (CD), preferably parallel to and of the same length as the first segment (AB), the second segment (CD) being located between a third pivot connection (C), directly or indirectly connecting the chassis to a connecting arm , and a fourth pivot connection (D) connecting the connecting arm to the additional agricultural tool , so that in the said mounted position (PM), the orientation of the additional agricultural tool is maintained if the working depth of the said at least one work element of the agricultural soil-working tool varies via the first adjustment means . - an agricultural soil-working tool comprising a chassis , at least one work element mounted to move on the said chassis in a movement comprising at least a translation along a direction (D1) substantially perpendicular to the soil (S) by first working depth adjustment means of the said at least one work element , and a reference element mounted to pivot relative to the chassis at least by means of two side arms and a pair of first pivot connections (A), - an additional agricultural tool , the said combination is characterized in that , in a mounted position (PM), the said additional agricultural tool is connected to the said agricultural soil-working tool by at least one connecting structure forming a deformable quadrilateral comprising: - a first segment (AB) located between the first pivot connection (A) and a second pivot connection (B) connecting the additional agricultural tool to the side arm of the agricultural soil-working tool , - a second segment (CD), preferably parallel to and of the same length as the first segment (AB), the second segment (CD) being located between a third pivot connection (C), directly or indirectly connecting the chassis to a connecting arm , and a fourth pivot connection (D) connecting the connecting arm to the additional agricultural tool , so that in the said mounted position (PM), the orientation of the additional agricultural tool is maintained if the working depth of the said at least one work element of the agricultural soil-working tool varies via the first adjustment means . - a first segment (AB) located between the first pivot connection (A) and a second pivot connection (B) connecting the additional agricultural tool to the side arm of the agricultural soil-working tool , - a second segment (CD), preferably parallel to and of the same length as the first segment (AB), the second segment (CD) being located between a third pivot connection (C), directly or indirectly connecting the chassis to a connecting arm , and a fourth pivot connection (D) connecting the connecting arm to the additional agricultural tool , so that in the said mounted position (PM), the orientation of the additional agricultural tool is maintained if the working depth of the said at least one work element of the agricultural soil-working tool varies via the first adjustment means . <EOS>