Abstract
ABSTRACT Soil amendment with biochar and PGPB represents a promising strategy to reduce dependence on chemical fertilizers. This study aimed to evaluate the potential of biochar and PGPB application, under a reduced nitrogen fertilization, to sustain sweet pepper growth and production, soil chemical and microbiological fertility. Plants were grown in pots under greenhouse on soil un‐amended or amended with 2% biochar (B0 and B2), un‐inoculated or inoculated with PGPB (P0 and P+) and un‐fertilized or fertilized with 50 (half dose) or 100 (full dose) kg N ha −1 (N0, N50 and N100). Plant above‐ and below‐ground biomass development, soil chemical and microbiological properties, and fruit quanti‐qualitative traits were assessed during and/or at the end of two periods: from transplanting (T0) to flowering initiation (T1) and from flowering initiation to harvest (T2). Under B2‐P+ treatment, N50 fertilized plants exhibited growth similar to N100, with 50% higher height and more than doubled leaf number compared with N0. At T2, the Absolute Growth Rate of plant height increased by 12% under B2 compared with B0, by 45% under P+ compared with T1, while the Absolute Growth Rate of leaf number was 60% higher under B2 compared with T1. Biochar and PGPB resulted in higher N tissue concentrations (+66 and +34% in stem; +16 and +11% in leaves, respectively), root length (+27%) and biomass (+170%), respectively. At soil level, B2 increased carbon and nitrogen contents by 94% and 25% compared with B0; P+ resulted in 12% higher carbon content, compared with P‐; half N fertilization favoured microbial growth. N50 fertilized plants showed fruit yield, weight, nitrogen and carbon contents comparable to N100. Biochar and PGPB application with half N dose maintained pepper growth and yield at levels comparable to full N fertilization, while improving soil fertility and exerting a modulatory effect on specific soil bacterial families.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Half-dose N (N50) plants showed fruit yield, weight, nitrogen and carbon contents comparable to full-dose N100.
- Taxon
- Sweet Pepper
Capsicum annuumt0 - Treatment
- N50e0
- Outcome
- fruit yield, weight, nitrogen and carbon contentse0
- Direction
- comparablee0
- Comparator
- N100e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N50 fertilized plants showed fruit yield, weight, nitrogen and carbon contents comparable to N100”
t0“Sweet Pepper”
Claim · model-written summary
Soil amended with 2% biochar (B2) had 94% higher carbon content than unamended soil (B0).
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- B2e0
- Outcome
- carbone0
- Direction
- increasede0
- Value
- 94%e0
- Comparator
- B0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B2 increased carbon and nitrogen contents by 94% and 25% compared with B0”
t0“Sweet Pepper”
Claim · model-written summary
Soil amended with 2% biochar (B2) had 25% higher nitrogen content than unamended soil (B0).
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- B2e0
- Outcome
- nitrogen contentse0
- Direction
- increasede0
- Value
- 25%e0
- Comparator
- B0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B2 increased carbon and nitrogen contents by 94% and 25% compared with B0”
t0“Sweet Pepper”
Claim · model-written summary
Biochar and PGPB led to higher N tissue concentrations (+66 and +34% in stem).
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- Biochar and PGPBe0
- Outcome
- N tissue concentrationse0
- Direction
- highere0
- Value
- +66 and +34% in steme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar and PGPB resulted in higher N tissue concentrations (+66 and +34% in stem; +16 and +11% in leaves, respectively), root length (+27%) and biomass (+170%), respectively”
t0“Sweet Pepper”
Claim · model-written summary
Biochar and PGPB led to greater root length (+27%).
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- Biochar and PGPBe0
- Outcome
- root lengthe0
- Direction
- highere0
- Value
- +27%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar and PGPB resulted in higher N tissue concentrations (+66 and +34% in stem; +16 and +11% in leaves, respectively), root length (+27%) and biomass (+170%), respectively”
t0“Sweet Pepper”
Claim · model-written summary
Biochar and PGPB led to greater biomass (+170%).
- Taxon
- Sweet PepperCapsicum annuumt0
- Treatment
- Biochar and PGPBe0
- Outcome
- biomasse0
- Direction
- highere0
- Value
- +170%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar and PGPB resulted in higher N tissue concentrations (+66 and +34% in stem; +16 and +11% in leaves, respectively), root length (+27%) and biomass (+170%), respectively”
t0“Sweet Pepper”
Claim · model-written summary
Biochar and PGPB with half N dose maintained pepper growth and yield at levels comparable to full N fertilization.
Verbatim
e0“Biochar and PGPB application with half N dose maintained pepper growth and yield at levels comparable to full N fertilization”
The same questions in other papers
biochar · growth · Capsicum annuum (sweet pepper)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
6 papers more in this group
See all 10 papers →inoculation · growth · Capsicum annuum (sweet pepper)Positive and negative results
47 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- no effect
48 papers more in this group
See all 52 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.