Abstract
Conservation systems for less soil movement and when associated with previous crops may reduce the effects of soil compaction. The objective of this work was to evaluate soil mechanical resistance penetration (MRP) in different cropping systems associated with previous corn crop after fifteen years. The experimental design was composed of experimental strips with subdivided plots, combining three soils management systems: CC- conventional cultivation, MC- minimum cultivation and NT- no-tillage, and four species of crops antecedent to maize for the production of commercial ears of green corn. In the determination of soil MRP, the electronic penetrometer (FALKER model SoloTrack PLG 5200) was used, with readings up to a depth of 400 mm. The results showed that there was a significant effect on the MRP values of the soil when submitted to the different cropping systems and previous crops at the end of fifteen years. The lowest MRP values were located in the superficial layers in the CC and MC. The NT cultivar system showed higher MRP values, at depth 0-100 mm. At conditions of tableland, after fifteen years, it was observed that the NT system provides better corn productivity levels combined with lower MRP values along the profile.
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Claims 6
Claim · model-written summary
Cropping systems and previous crops significantly affected soil mechanical resistance after 15 years.
Not reportedTaxonComparatorDirection
Verbatim
e0“there was a significant effect on the MRP values of the soil when submitted to the different cropping systems and previous crops at the end of fifteen years”
Claim · model-written summary
CC had the lowest superficial soil MRP values.
Not reportedTaxonOrgan / stage
Verbatim
e0“The lowest MRP values were located in the superficial layers in the CC and MC”
Claim · model-written summary
MC had the lowest superficial soil MRP values.
Not reportedTaxon
Verbatim
e0“The lowest MRP values were located in the superficial layers in the CC and MC”
Claim · model-written summary
NT showed higher MRP values at 0-100 mm.
Not reportedTaxonComparator
Verbatim
e0“The NT cultivar system showed higher MRP values, at depth 0-100 mm”
Claim · model-written summary
NT provided better corn productivity after fifteen years on tableland.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- NT systeme0
- Outcome
- corn productivity levelse0
- Direction
- bettere0
- Setting
- tablelande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At conditions of tableland, after fifteen years, it was observed that the NT system provides better corn productivity levels combined with lower MRP values along the profile”
Claim · model-written summary
NT provided lower soil MRP along the profile after fifteen years on tableland.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- NT systeme0
- Outcome
- MRP values along the profilee0
- Direction
- lowere0
- Setting
- tablelande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At conditions of tableland, after fifteen years, it was observed that the NT system provides better corn productivity levels combined with lower MRP values along the profile”
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See all 1,099 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.