Abstract
The use of rock powders, pure our combined, associated or not with organic sources can be an interesting strategy to improve soil fertility and increase plant productivity. This study aimed to evaluate the productivity of soybean and barley plants subjected to treatments with rock powders siltstone, tephrite, and olivine melilitite, pure or combined, associated or not with cattle manure compared with the conventional treatment. Two experiments with pots were carried out in a greenhouse in Cambisol and Nitisol, where soybeans and barley were cultivated, in succession, in 2019, until seed production. Plant productivity of soybean in conventional treatment was higher than the obtained in most treatments. For this same treatment, barley had greater productivity than that obtained in the other treatments. Among the tested rock powders, the best response of plants, in terms of productivity, was verified in treatments with olivine melilitite and siltstone + olivine melilitite, and poor response in those submitted to pure siltstone and tephrite. The combination of manure with these powders provided an increase in plant productivity, especially in the treatment with manure + siltstone + olivine melilitite, in which plant productivity was close to and, in some cases, higher than the obtained in the conventional treatment.
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Claims 8
Claim · model-written summary
Conventional treatment yielded more soybean than most alternatives.
- Taxon
- soybean
Glycine maxe0 - Treatment
- conventional treatmente0
- Outcome
- Plant productivitye0
- Direction
- highere0
- Comparator
- most treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Plant productivity of soybean in conventional treatment was higher than the obtained in most treatments”
Claim · model-written summary
Conventional treatment yielded more barley than other treatments.
- Taxon
- barley
Hordeum vulgaree0 - Treatment
- conventional treatmente1
- Outcome
- productivitye0
- Direction
- greatere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“For this same treatment, barley had greater productivity than that obtained in the other treatments”
e1“conventional treatment was higher”
Claim · model-written summary
Olivine melilitite gave a best productivity response.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- olivine melilititee0
- Outcome
- productivitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“the best response of plants, in terms of productivity, was verified in treatments with olivine melilitite and siltstone + olivine melilitite”
t0“soybean and barley”
Claim · model-written summary
Siltstone plus olivine melilitite gave a best productivity response.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- siltstone + olivine melilititee0
- Outcome
- productivitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“the best response of plants, in terms of productivity, was verified in treatments with olivine melilitite and siltstone + olivine melilitite”
t0“soybean and barley”
Claim · model-written summary
Pure siltstone gave a poor productivity response.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- pure siltstonee0
- Outcome
- poor responsee0
- Direction
- poore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“poor response in those submitted to pure siltstone and tephrite”
t0“soybean and barley”
Claim · model-written summary
Tephrite gave a poor productivity response.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- tephritee0
- Outcome
- poor responsee0
- Direction
- poore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“poor response in those submitted to pure siltstone and tephrite”
t0“soybean and barley”
Claim · model-written summary
Adding manure to rock powders increased productivity.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- combination of manure with these powderse0
- Outcome
- plant productivitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“The combination of manure with these powders provided an increase in plant productivity”
t0“soybean and barley”
Claim · model-written summary
Manure plus siltstone plus olivine melilitite approached or exceeded conventional productivity in some cases.
- Taxon
- soybean and barley
Glycine max
Hordeum vulgaret0 - Treatment
- manure + siltstone + olivine melilititee0
- Outcome
- plant productivitye0
- Direction
- highere0
- Qualifier
- in some casese0
- Comparator
- conventional treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“manure + siltstone + olivine melilitite, in which plant productivity was close to and, in some cases, higher than the obtained in the conventional treatment”
t0“soybean and barley”
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