Abstract
Soil tillage and agricultural traffic generate changes in soil physical attributes and affect the growth of the roots. This study evaluates the impact of system soil tillage on compaction and sugarcane root growth. The experiment was carried out on a Rhodic Kandiudox with two soil tillages (Deep Strip Tillage and Conventional Tillage) and two positions (beds or traffic lane and no traffic lane), totaling four treatments (DST-beds + no traffic lane, DST-traffic lane, CT-no traffic lane and CT-traffic lane). Soil penetration resistance (SPR), bulk density, dry mass, and root system lengths and volumes were evaluated. DST-beds presented lower values for SPR (1.45 MPa) compared to the other treatments (2.55 MPa). This lower SPR did not reflect significant increases in root growth in relation to the DST-traffic lane, meaning that the roots were not confined to the beds. The dry root mass for CT- traffic lane was 35% less than for DST- traffic lane, and CT-no traffic lane reduced of the root dry mass in the layers 0.0-0.2 and 0.2-0.4 m by 62% and 47%, respectively, compared to the DST-beds. Therefore, CT, although widely used, does not create adequate conditions for root development in the first sugarcane cycle, even in lanes with no traffic.
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Claims 6
Claim · model-written summary
Deep strip tillage beds had lower soil penetration resistance than other treatments.
Verbatim
t0“sugarcane”
e0“DST-beds presented lower values for SPR (1.45 MPa) compared to the other treatments (2.55 MPa).”
Claim · model-written summary
Lower resistance in beds did not significantly increase root growth relative to strip tillage traffic lanes.
Verbatim
t0“sugarcane”
e0“This lower SPR did not reflect significant increases in root growth in relation to the DST-traffic lane, meaning that the roots were not confined to the beds.”
Claim · model-written summary
Conventional tillage traffic lanes had 35% less dry root mass than deep strip tillage traffic lanes.
Verbatim
t0“sugarcane”
e0“The dry root mass for CT- traffic lane was 35% less than for DST- traffic lane”
Claim · model-written summary
Conventional tillage without traffic reduced root mass in the 0.0-0.2 m layer by 62% relative to strip tillage beds.
Verbatim
t0“sugarcane”
e0“CT-no traffic lane reduced of the root dry mass in the layers 0.0-0.2 and 0.2-0.4 m by 62% and 47%, respectively, compared to the DST-beds.”
Claim · model-written summary
Conventional tillage without traffic reduced root mass in the 0.2-0.4 m layer by 47% relative to strip tillage beds.
Verbatim
t0“sugarcane”
e0“CT-no traffic lane reduced of the root dry mass in the layers 0.0-0.2 and 0.2-0.4 m by 62% and 47%, respectively, compared to the DST-beds.”
Claim · model-written summary
The authors concluded that conventional tillage does not provide adequate conditions for first-cycle root development.
Verbatim
t0“sugarcane”
e0“CT, although widely used, does not create adequate conditions for root development in the first sugarcane cycle, even in lanes with no traffic.”
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