Abstract
Rock biofertilizers is a practical process and increase nutrients available for plants and soils. The aim of the study was to evaluate the action of biofertilizers from PK rocks mixed with earthworm compound enriched in N by inoculation with diazotrophic bacteria (NPKB) in biomass production and nutrients uptake by cowpea (cv. IPA 206) grown in a Brazilian Spodosol. The effects of AMF fungi (Glomus etunicatum and Gigaspora albida) were also tested. The experiment was carried out in a factorial design (4x3+1). Fertilization treatments were biofertilizer (NPKB) applied in three rates (4.0, 6.0 and 8.0 t ha) and mineral fertilizer (NPKF) in recommended rate. The AMF was applied individually (Glomus etunicatum and Gigaspora albida), and a treatment without AMF was added. In all treatments plants were inoculated with mixed rhizobia strains (NFB 700, BR 3267). A control treatment without AMF and rhizobia inoculation was used. The best results in all analyzed parameters were with NPKB biofertilizer applied in rate (6.0 t ha). Rhizobia inoculation was no effective in cowpea biomass. Glomus etunicatum applied individually showed slight response in shoot biomass. The biofertilizer (NPKB) increase available P and K and showed potential to be applied as alternative for NPK fertilization in soil with low nutrients availability.
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Claims 5
Claim · model-written summary
NPKB at 6.0 t ha gave the best results across all analyzed parameters.
- Taxon
- cowpea
Vigna unguiculatae0 - Material
- cv. IPA 206e0
- Treatment
- NPKB biofertilizer applied in rate (6.0 t ha)e1
- Outcome
- all analyzed parameterse1
- Direction
- beste1
- Value
- 6.0 t hae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass production and nutrients uptake by cowpea (cv. IPA 206)”
e1“The best results in all analyzed parameters were with NPKB biofertilizer applied in rate (6.0 t ha).”
Claim · model-written summary
Rhizobia inoculation was ineffective for cowpea biomass.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- Rhizobia inoculatione0
- Interactor
- Rhizobiae0symbiont
- Outcome
- cowpea biomasse0
- Direction
- no effectivee0
- Comparator
- without AMF and rhizobia inoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobia inoculation was no effective in cowpea biomass.”
e1“A control treatment without AMF and rhizobia inoculation was used.”
Claim · model-written summary
Individual Glomus etunicatum application gave a slight shoot biomass response.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- Glomus etunicatum applied individuallye0
- Interactor
- Glomus etunicatume0symbiont
- Outcome
- shoot biomasse0
- Qualifier
- slight responsee0
- Comparator
- without AMFe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glomus etunicatum applied individually showed slight response in shoot biomass.”
e1“a treatment without AMF was added”
e2“nutrients uptake by cowpea”
Claim · model-written summary
NPKB biofertilizer increased available soil phosphorus and potassium.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- biofertilizer (NPKB)e1
- Outcome
- available P and Ke1
- Direction
- increasee1
- Comparator
- mineral fertilizer (NPKF)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrients uptake by cowpea”
e1“The biofertilizer (NPKB) increase available P and K”
e2“mineral fertilizer (NPKF) in recommended rate”
Claim · model-written summary
The authors propose NPKB as an alternative to NPK fertilization in nutrient-poor soil.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- alternative for NPK fertilization in soil with low nutrients availabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrients uptake by cowpea”
e1“showed potential to be applied as alternative for NPK fertilization in soil with low nutrients availability”
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