Abstract
Most soybean producers in the Cerrado biome use the direct seeding system, making it essential to cultivate cash or cover crops in the off-season, to promote soil protection, as well as increase organic matter, which is directly related to improvements in the chemical and physical characteristics of these soils. In this sense, this work was conducted in Jataí, state of Goias, Brazil, to evaluate the physical-chemical attributes of the soil and the performance of soybeans cultivated in different crop succession systems cultivated for 6 years in the region of Jataí, GO. The experimental design was randomized blocks with four plots and four replications; the crops that followed soybeans were arranged as follows: T1—corn (Zea mays); T2—pearl millet (Pennisetum glaucum); T3—Urochloa ruziziensis; and T4—corn + Urochloa ruziziensis. Soybean yield components and grain yield were evaluated in two harvests (2020/2021 and 2021/2022). Deformed and undisturbed soil samples were collected in 2022 to assess soil fertility and for physical analysis. The data were subjected to analysis of variance (F test) and the means were compared using the Tukey test at 5% probability. The soybean–millet succession system stood out for the chemical and physical attributes of the soil: calcium, magnesium, base saturation, hydrogen + aluminum, and total porosity. The crop succession system did not affect yield for the two years analyzed, but the accumulated grain yields were higher in the crop succession soybean/corn intercropped. The results highlight the importance of using cover crops in improving the physical and chemical qualities of the soil in the long term. However, in the Cerrado, there is a predominance of the soybean/corn succession system motivated by financial issues to the detriment of the qualitative aspects of the soil, in which the introduction of Urochloa ruziziensis in intercropping with corn would improve the chemical attributes of the soil and have a long-term impact on the accumulated grain production.
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Claims 5
Claim · model-written summary
Soybean–millet succession stood out for several soil chemical and physical attributes.
- Taxon
- soybean
Glycine maxe0 - Treatment
- soybean–millet succession systeme0
- Outcome
- chemical and physical attributes of the soil: calcium, magnesium, base saturation, hydrogen + aluminum, and total porositye0
- Direction
- stood oute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soybean–millet succession system stood out for the chemical and physical attributes of the soil: calcium, magnesium, base saturation, hydrogen + aluminum, and total porosity”
Claim · model-written summary
Succession system did not affect soybean yield in either analyzed year.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- crop succession systeme0
- Outcome
- yielde0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The crop succession system did not affect yield for the two years analyzed”
t0“Soybean”
Claim · model-written summary
Accumulated grain yields were higher with soybean/corn intercropping.
- Taxon
- soybeanGlycine maxe0
- Treatment
- soybean/corn intercroppede0
- Outcome
- accumulated grain yieldse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulated grain yields were higher in the crop succession soybean/corn intercropped”
Claim · model-written summary
Authors conclude cover crops improve long-term soil physical and chemical quality.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- using cover cropse0
- Qualifier
- in the long terme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“importance of using cover crops in improving the physical and chemical qualities of the soil in the long term”
t0“Soybean”
Claim · model-written summary
Authors propose corn intercropping with Urochloa ruziziensis to improve soil chemistry and accumulated grain production.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- introduction of Urochloa ruziziensis in intercropping with corne0
- Qualifier
- long-term impact on the accumulated grain productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“introduction of Urochloa ruziziensis in intercropping with corn would improve the chemical attributes of the soil and have a long-term impact on the accumulated grain production”
t0“Soybean”
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