Abstract
Soil compaction directly interferes on crop yield. The objectives of this work were to evaluate the effect of previous cultivation with palisade grass [Urochloa brizantha (C. Hochstetter ex A. Rich.) R. Webster cv. Marandu] and the use of soil correctives on the growth and yield of soybeans (Glycine max L.) cultivated under various soil compaction levels, in greenhouse conditions. The experiment was conducted in pots (columns) of 0.2 m diameter PVC tubes, composed of two rings: the lower ring, 0.4 m in height, received the soil (dystrophic Red Latosol, clayey texture) without corrective and a density of 1.0 Mg m-3; and the upper ring, 0,2 m in height, received the treatments of soil correctives and density. The experimental design was fully randomized in a 4 x 6 x 2 factorial outline, being four soil density levels (1.0; 1.20; 1.40 and 1.60 Mg m-3), six soil correctives (without corrective, lime, calcium silicate, gypsum, lime + gypsum and calcium silicate + gypsum) and two cultivation systems of the soybean (with and without previous cultivation of palisade grass). Starting from 1.2 Mg m-3 of soil density the soybean growth and yield were decreased. The use of soil correctives and previous soil cultivation with palisade grass decreased the harmful effects of the soil compaction on the soybean growth and yield. For the treatments that received previous cultivation with palisade grass, the soybean growth and yield were higher with application of lime + gypsum and calcium silicate + gypsum.
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Claims 3
Claim · model-written summary
Soybean growth and yield decreased from a soil density of 1.2 Mg m-3 upward in greenhouse conditions.
- Taxon
- soybeans (Glycine max L.)
Glycine maxe4 - Treatment
- Starting from 1.2 Mg m-3 of soil densitye1
- Outcome
- soybean growth and yielde1
- Direction
- decreasede1
- Setting
- in greenhouse conditionse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starting from 1.2 Mg m-3 of soil density the soybean growth and yield were decreased”
e4“soybeans (Glycine max L.)”
e5“in greenhouse conditions”
Claim · model-written summary
Soil correctives and previous palisade grass cultivation decreased the harmful effects of soil compaction on soybean growth and yield.
- Taxon
- soybeans (Glycine max L.)Glycine maxe4
- Treatment
- soil correctives and previous soil cultivation with palisade grasse2
- Outcome
- harmful effects of the soil compaction on the soybean growth and yielde2
- Direction
- decreasede2
- Setting
- in greenhouse conditionse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The use of soil correctives and previous soil cultivation with palisade grass decreased the harmful effects of the soil compaction on the soybean growth and yield”
e4“soybeans (Glycine max L.)”
e5“in greenhouse conditions”
Claim · model-written summary
With previous palisade grass cultivation, lime + gypsum and calcium silicate + gypsum gave higher soybean growth and yield.
- Taxon
- soybeans (Glycine max L.)Glycine maxe4
- Treatment
- lime + gypsum and calcium silicate + gypsume3
- Outcome
- soybean growth and yielde3
- Direction
- highere3
- Qualifier
- previous cultivation with palisade grasse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“For the treatments that received previous cultivation with palisade grass, the soybean growth and yield were higher with application of lime + gypsum and calcium silicate + gypsum”
e4“soybeans (Glycine max L.)”
The same questions in other papers
gypsum · yield · Glycine max (soybean)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
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See all 7 papers →Urochloa brizantha · yield · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
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See all 11 papers →calcium silicate · yield · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- positive
- positive
lime · yield · Glycine max (soybean)Positive and negative results
107 papers in the same direction as this paper · 31 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- no effect
137 papers more in this group
See all 141 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.