Abstract
This study evaluates the effect of soil amendment with biosolid compost with wood shavings and yard trimmings on soil fertility, and soybean (Glycine max) biomass, productivity, nutrient uptake, and potential accumulation of toxic elements, like Pb. Soil from agricultural fields under intense crop production were amended with compost at 0%, 5% and 10% w/w rate, and incubated under controlled conditions before planting. Then, a greenhouse experiment was performed to study soybean growth, physiological indicators of productivity, and antioxidant response (chlorophylls, carotenes, antioxidant power, soluble sugars and proteins), as well as nutrient (Mg, Cu, Mn, and Zn), and Pb accumulation. Moreover, soil nutrient status (pH, cation exchange capacity, organic matter, nitrogen, sulfur, extractable cations, and soil microbial activity) were analyzed. The results showed that compost improved soil fertility and microbial activity, including nodulation in soybean roots. Biomass production was strongly increased; content of chlorophyll, carotenes, sugars, and protein also increased. Grains were produced only in the compost treatments. Compost addition also reduced nutrient deficiencies in leaves and grains, and Pb accumulation in soybean. Our findings contribute with information about the role of biosolid compost in sustainable agriculture: allowing the recovery of soil fertility in agricultural soils under intensive production and, consequently, improvement of crop growth.
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Claims 7
Claim · model-written summary
Compost improved soil fertility and microbial activity.
- Taxon
- soybean
Glycine maxe0 - Treatment
- composte0
- Outcome
- soil fertility and microbial activitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compost improved soil fertility and microbial activity, including nodulation in soybean roots”
Claim · model-written summary
Compost improved soybean root nodulation.
- Taxon
- soybeanGlycine maxe0
- Treatment
- composte0
- Outcome
- nodulation in soybean rootse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compost improved soil fertility and microbial activity, including nodulation in soybean roots”
Claim · model-written summary
Compost strongly increased biomass production.
- Taxon
- soybeanGlycine maxe0
- Treatment
- composte2
- Outcome
- Biomass productione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max) biomass”
e1“Biomass production was strongly increased”
e2“compost improved soil fertility”
Claim · model-written summary
Compost increased chlorophyll, carotene, sugar and protein contents.
- Taxon
- soybeanGlycine maxe0
- Treatment
- composte2
- Outcome
- content of chlorophyll, carotenes, sugars, and proteine1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max) biomass”
e1“content of chlorophyll, carotenes, sugars, and protein also increased”
e2“compost improved soil fertility”
Claim · model-written summary
Grains formed only with compost.
- Taxon
- soybeanGlycine maxe0
- Treatment
- compost treatmentse1
- Outcome
- Grains were producede1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean (Glycine max) biomass”
e1“Grains were produced only in the compost treatments”
Claim · model-written summary
Compost reduced nutrient deficiencies in leaves and grains.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Compost additione0
- Outcome
- nutrient deficiencies in leaves and grainse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compost addition also reduced nutrient deficiencies in leaves and grains, and Pb accumulation in soybean”
Claim · model-written summary
Compost reduced lead accumulation in soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Compost additione0
- Outcome
- Pb accumulation in soybeane0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compost addition also reduced nutrient deficiencies in leaves and grains, and Pb accumulation in soybean”
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