Abstract
The majority of soils in the Amazon savannah have low natural fertility, with issues of high acidity and high Al3+ saturation that restricts root growth. Lime is an alternative for soil correction, but its effects are limited to the soil surface. In contrast, gypsum acts in the subsurface, reducing the activity of Al3+. This study aimed to assess the impact of different surface gypsum rates on the distribution of the root system, soybean nutrition, and the chemical improvement of Xanthic Haplustox in the Amazon savannah. A study evaluated the effects of different gypsum rates (0, 1.5, 3, 6, and 12 t ha-1) on the BRS 8381 soybean cultivar in a no-till system. Leaf analyses were performed to determine nutrient contents and vegetative production analyses were conducted. Trenches were also opened to analyze the root system visually. The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans. Although it did not affect grain yield, it improved the chemical environment, particularly during periods of water deficit, by enhancing the distribution of the soybean root system in Xanthic Haplustox in the Amazon savannah.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Gypsum application increased foliar nitrogen, sulfur and zinc contents in soybean.
- Taxon
- soybean
Glycine maxe0 - Material
- BRS 8381e0
- Treatment
- application of gypsume1
- Outcome
- foliar contents of nitrogen, sulfur, and zince1
- Direction
- increasede1
- Setting
- no-till systeme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A study evaluated the effects of different gypsum rates (0, 1.5, 3, 6, and 12 t ha-1) on the BRS 8381 soybean cultivar in a no-till system”
e1“The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans”
Claim · model-written summary
Gypsum application decreased foliar magnesium in soybean.
- Taxon
- soybeansGlycine maxe1
- Treatment
- application of gypsume1
- Outcome
- magnesiume1
- Direction
- decreasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans”
Claim · model-written summary
Gypsum application did not affect soybean grain yield.
- Taxon
- soybeansGlycine maxe1
- Treatment
- application of gypsume1
- Outcome
- grain yielde2
- Direction
- did not affecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans”
e2“Although it did not affect grain yield”
Claim · model-written summary
Gypsum application enhanced the distribution of the soybean root system, particularly during water deficit.
- Taxon
- soybeanGlycine maxe3
- Treatment
- application of gypsume1
- Outcome
- the distribution of the soybean root systeme3
- Direction
- enhancinge3
- Qualifier
- particularly during periods of water deficite3
- Setting
- Xanthic Haplustox in the Amazon savannahe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans”
e3“it improved the chemical environment, particularly during periods of water deficit, by enhancing the distribution of the soybean root system in Xanthic Haplustox in the Amazon savannah”
Claim · model-written summary
Gypsum application improved the chemical environment of the Oxisol, particularly during water deficit.
- Taxon
- soybeanGlycine maxe3
- Treatment
- application of gypsume1
- Outcome
- chemical environmente3
- Direction
- improvede3
- Qualifier
- particularly during periods of water deficite3
- Setting
- Xanthic Haplustox in the Amazon savannahe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of gypsum increased the foliar contents of nitrogen, sulfur, and zinc while decreasing magnesium in soybeans”
e3“it improved the chemical environment, particularly during periods of water deficit, by enhancing the distribution of the soybean root system in Xanthic Haplustox in the Amazon savannah”
The same questions in other papers
lime · growth · Glycine max (soybean)Results differ
28 papers in the same direction as this paper · 5 in the opposite direction
- positive
- negative
- no effect
30 papers more in this group
See all 34 papers →lime · yield · Glycine max (soybean)Positive and negative results
32 papers in the same direction as this paper · 108 in the opposite direction
- positive
- positive
- positive
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.