Abstract
Two consecutive factorial experiments were carried out during the two winter seasons 2020/2021 and 2021/2022 to study the application of Priestia megaterium inoculant, Azolla extract or compost as P-activators to reduce the inorganic phosphorus (Pi) fertilizer for the potential cultivation of faba bean in calcareous soils. The treatments were applied in a split-plot design to compare the full dose or half dose of Pi, individually and in com-bination with P-activator. The effect of applied treatments was estimated in terms of the rhizosphere biology, shoot and root metrics, nodulation status, photosynthetic pigments, nutrients uptake as well as yield and yield components. Biologically, total microbial count and phosphate dissolvers recorded increases in their numbers in response to half dose of Pi coapplied with each of P-activators, especially where they had been received com-post. Coaddition of P. megaterium, Azolla extract and compost revealed a significant improvement in vegetative growth in terms of plant height, root surface area, nodulation status and total chlorophyll. At post-harvest, esti-mated overall performance indicated variable enhancements for yield and yield components in response to P-activators with superiority of compost coaddition with P. megaterium and Azolla extract under half dose of phosphorus fertilizer to relatively emulate that attained by full dose. Accordingly, a possible reduction in P-fertilizers can be achieved using P. megaterium, Azolla extract with compost as P-activators in calcareous soil for faba bean cultivation.
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Claims 6
Claim · model-written summary
Half dose of Pi with P-activators increased total microbial count and phosphate dissolvers.
- Taxon
- Faba Bean
Vicia fabat0 - Treatment
- half dose of Pi coapplied with each of P-activatorse1
- Outcome
- total microbial count and phosphate dissolverse1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Faba Bean”
e1“total microbial count and phosphate dissolvers recorded increases in their numbers in response to half dose of Pi coapplied with each of P-activators, especially where they had been received com-post”
Claim · model-written summary
Co-addition of P. megaterium, Azolla extract and compost significantly improved plant height, root surface area and nodulation status.
- Taxon
- Faba BeanVicia fabat0
- Treatment
- Coaddition of P. megaterium, Azolla extract and composte2
- Interactor
- P. megaterium
Priestia megateriume2symbiont - Outcome
- plant height, root surface area, nodulation statuse2
- Direction
- improvemente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Faba Bean”
e2“Coaddition of P. megaterium, Azolla extract and compost revealed a significant improvement in vegetative growth in terms of plant height, root surface area, nodulation status and total chlorophyll”
Claim · model-written summary
Co-addition of P. megaterium, Azolla extract and compost significantly improved total chlorophyll.
- Taxon
- Faba BeanVicia fabat0
- Treatment
- Coaddition of P. megaterium, Azolla extract and composte2
- Interactor
- P. megateriumPriestia megateriume2symbiont
- Outcome
- total chlorophylle2
- Direction
- improvemente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Faba Bean”
e2“Coaddition of P. megaterium, Azolla extract and compost revealed a significant improvement in vegetative growth in terms of plant height, root surface area, nodulation status and total chlorophyll”
Claim · model-written summary
P-activators with half phosphorus dose gave variable enhancements in yield and yield components.
- Taxon
- Faba BeanVicia fabat0
- Treatment
- P-activatorse3
- Outcome
- yield and yield componentse3
- Direction
- enhancementse3
- Qualifier
- variablee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Faba Bean”
e3“At post-harvest, esti-mated overall performance indicated variable enhancements for yield and yield components in response to P-activators with superiority of compost coaddition with P. megaterium and Azolla extract under half dose of phosphorus fertilizer to relatively emulate that attained by full dose”
Claim · model-written summary
Compost co-addition with P. megaterium and Azolla extract under half phosphorus dose had superior yield and yield components relative to full dose.
- Taxon
- Faba BeanVicia fabat0
- Treatment
- compost coaddition with P. megaterium and Azolla extract under half dose of phosphorus fertilizere3
- Interactor
- P. megateriumPriestia megateriume3symbiont
- Outcome
- yield and yield componentse3
- Direction
- superioritye3
- Qualifier
- relatively emulatee3
- Comparator
- full dosee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Faba Bean”
e3“At post-harvest, esti-mated overall performance indicated variable enhancements for yield and yield components in response to P-activators with superiority of compost coaddition with P. megaterium and Azolla extract under half dose of phosphorus fertilizer to relatively emulate that attained by full dose”
Claim · model-written summary
A possible reduction in P-fertilizers can be achieved with P. megaterium, Azolla extract and compost as P-activators in calcareous soil for faba bean.
- Taxon
- faba beanVicia fabae4
- Treatment
- P. megaterium, Azolla extract with compost as P-activatorse4
- Interactor
- P. megateriumPriestia megateriume4symbiont
- Outcome
- reduction in P-fertilizerse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“a possible reduction in P-fertilizers can be achieved using P. megaterium, Azolla extract with compost as P-activators in calcareous soil for faba bean cultivation”
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