Abstract
The frequency (F%) of spontaneous endomycorrhizal fungal infection (AMF) and the root nodulation of Pisum sativum L. was studied after 8 and 15 years of recultivation in 4 soils (andesitic tuff, yellow sand, yellow clay, and grey clay) disturbed by mining activities. The effects of Rhizobium inoculation and the interaction of both microsymbionts with plant production were also examined, along with humus content and the humus stability coefficient, in the following variations: control, NPK fertilizer, NPK + lignite, NPK + straw, and sewage sludge. Dump spoils originating from deep geological layers were poor in organic materials. After 12 years of recultivation, the humus content increased significantly. No such increase was noted in grey clay and the natural, brown forest soil used as an undisturbed (control) sample. The degradation of soils by mining brings about a decrease in the rhizobial and mycorrhizal population, so the number of spontaneous Rhizobium nodules is relatively low and does not influence the yield of peas. Inoculation with a selected, effective strain of Rhizobium leguminosarum bv. viceae, however, enhanced dry matter production in these microbiologically degraded soils. Although the frequency of AMF infection was also higher after rhizobial inoculation, no positive correlation was found between dry matter production of peas and the F% of AMF. Spoils treated with lignite, straw, and sewage sludge had an especially high level of spontaneous mycorrhizal populations, indicating that organic materials had a favorable effect on the recultivation processes and fertility of mine spoils.
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Claims 8
Claim · model-written summary
Mining-degraded soils had fewer rhizobia and mycorrhizae.
Not reportedTaxon
Verbatim
e0“The degradation of soils by mining brings about a decrease in the rhizobial and mycorrhizal population”
Claim · model-written summary
Spontaneous Rhizobium nodules were relatively few and did not influence pea yield.
- Taxon
- peas
Lathyrus oleraceuse0 - Outcome
- yield of pease0
- Direction
- does not influencee0
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of spontaneous Rhizobium nodules is relatively low and does not influence the yield of peas”
Claim · model-written summary
Inoculation with Rhizobium leguminosarum bv. viceae increased pea dry matter production in degraded mine soils.
- Taxon
- peasLathyrus oleraceuse1
- Treatment
- Inoculation with a selected, effective strain of Rhizobium leguminosarum bv. viceaee0
- Interactor
- Rhizobium leguminosarum bv. viceae
Rhizobium leguminosarume0symbiont - Outcome
- dry matter productione0
- Direction
- enhancede0
- Setting
- microbiologically degraded soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with a selected, effective strain of Rhizobium leguminosarum bv. viceae, however, enhanced dry matter production in these microbiologically degraded soils”
e1“dry matter production of peas”
Claim · model-written summary
Rhizobial inoculation increased AMF infection frequency.
- Taxon
- Pisum sativum L.Lathyrus oleraceuse1
- Treatment
- rhizobial inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- frequency of AMF infectione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the frequency of AMF infection was also higher after rhizobial inoculation”
e1“root nodulation of Pisum sativum L.”
Claim · model-written summary
AMF infection frequency was not positively correlated with pea dry matter production.
- Taxon
- peasLathyrus oleraceuse0
- Interactor
- AMFe0symbiont
- Outcome
- dry matter production of pease0
- Direction
- no positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no positive correlation was found between dry matter production of peas and the F% of AMF”
Claim · model-written summary
Lignite-treated spoils had high spontaneous mycorrhizal populations.
- Taxon
- Pisum sativum L.Lathyrus oleraceuse1
- Treatment
- lignitee0
- Outcome
- spontaneous mycorrhizal populationse0
- Direction
- especially highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spoils treated with lignite, straw, and sewage sludge had an especially high level of spontaneous mycorrhizal populations”
e1“root nodulation of Pisum sativum L.”
Claim · model-written summary
Straw-treated spoils had high spontaneous mycorrhizal populations.
- Taxon
- Pisum sativum L.Lathyrus oleraceuse1
- Treatment
- strawe0
- Outcome
- spontaneous mycorrhizal populationse0
- Direction
- especially highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spoils treated with lignite, straw, and sewage sludge had an especially high level of spontaneous mycorrhizal populations”
e1“root nodulation of Pisum sativum L.”
Claim · model-written summary
Sewage-sludge-treated spoils had high spontaneous mycorrhizal populations.
- Taxon
- Pisum sativum L.Lathyrus oleraceuse1
- Treatment
- sewage sludgee0
- Outcome
- spontaneous mycorrhizal populationse0
- Direction
- especially highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spoils treated with lignite, straw, and sewage sludge had an especially high level of spontaneous mycorrhizal populations”
e1“root nodulation of Pisum sativum L.”
The same questions in other papers
Rhizobium leguminosarum · yield · Lathyrus oleraceus (pea)Results differ
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
3 papers more in this group
See all 7 papers →inoculation · yield · Lathyrus oleraceus (pea)Results differ
107 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- negative
123 papers more in this group
See all 127 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.