Abstract
Cabbage serves as an important food and nutrition source for numerous communities in the world, yet its production requires substantial quantities of chemical fertilizers. In this study, we assessed the impact of both increasing nitrogen and phosphorus mineral (NP) fertilization, along with the application of plant growth-promoting bacteria (PGPB) on the N and P uptake, quality, and yield of cabbage. To this end, we conducted two consecutive field experiments following a randomized block design with four replicates and two factors: NP doses and PGPB inoculation. PGPB inoculation used a bacterial consortium comprising Azospirillum brasilense D7, Herbaspirillum sp. AP21, and Rhizobium leguminosarum T88. Our results showed a significant influence of both biofertilization and NP fertilization across both crop cycles; however, no interaction between these factors was observed. In the first crop cycle, 75% of NP mineral fertilization (equivalent to 93.6 kg ha−1 of N and 82.1 kg ha−1 of P) positively impacted yield and N uptake. Also, microbial inoculation significantly influenced crop yield, resulting in a 9-ton increase in crop yield per hectare due to biofertilization. In the second crop cycle, we observed a significant positive effect of mineral fertilization on cabbage yield and nutritional quality. The relative agronomic effectiveness (RAE) index showed that combining biological fertilization with 50% and 75% of the NP fertilization, respectively, increased yield by 66% and 48% compared to the commercial NP dosage without PGPB. Collectively, our results demonstrated that within our experimental setup, NP fertilization dosage can be reduced without any detrimental impact on yield. Moreover, biofertilization could enhance cabbage quality and yield in field conditions.
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Claims 8
Claim · model-written summary
Biofertilization and NP fertilization significantly affected cabbage across both crop cycles, with no interaction.
- Taxon
- Cabbage
Brassica oleracea var. capitatat0 - Outcome
- significant influence of both biofertilization and NP fertilizatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results showed a significant influence of both biofertilization and NP fertilization across both crop cycles; however, no interaction between these factors was observed.”
t0“Cabbage”
Claim · model-written summary
In the first cycle, 75% NP fertilization increased cabbage yield.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 75% of NP mineral fertilizatione0
- Outcome
- yielde0
- Direction
- positively impactede0
- Qualifier
- first crop cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the first crop cycle, 75% of NP mineral fertilization (equivalent to 93.6 kg ha−1 of N and 82.1 kg ha−1 of P) positively impacted yield and N uptake.”
t0“Cabbage”
Claim · model-written summary
In the first cycle, 75% NP fertilization increased N uptake.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 75% of NP mineral fertilizatione0
- Outcome
- N uptakee0
- Direction
- positively impactede0
- Qualifier
- first crop cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the first crop cycle, 75% of NP mineral fertilization (equivalent to 93.6 kg ha−1 of N and 82.1 kg ha−1 of P) positively impacted yield and N uptake.”
t0“Cabbage”
Claim · model-written summary
Microbial inoculation raised cabbage yield by 9 tons per hectare.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- microbial inoculatione0
- Interactor
- plant growth-promoting bacteria (PGPB)e1symbiont
- Outcome
- crop yielde0
- Direction
- increasee0
- Value
- 9-tone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“microbial inoculation significantly influenced crop yield, resulting in a 9-ton increase in crop yield per hectare due to biofertilization.”
t0“Cabbage”
e1“plant growth-promoting bacteria (PGPB)”
Claim · model-written summary
In the second cycle, mineral fertilization significantly increased cabbage yield and nutritional quality.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- mineral fertilizatione0
- Outcome
- cabbage yield and nutritional qualitye0
- Direction
- positive effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second crop cycle, we observed a significant positive effect of mineral fertilization on cabbage yield and nutritional quality.”
Claim · model-written summary
Biofertilization plus 50% NP increased yield by 66% versus commercial NP without PGPB.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- biological fertilization with 50%e0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 66%e0
- Comparator
- commercial NP dosage without PGPBe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combining biological fertilization with 50% and 75% of the NP fertilization, respectively, increased yield by 66% and 48% compared to the commercial NP dosage without PGPB.”
t0“Cabbage”
Claim · model-written summary
Biofertilization plus 75% NP increased yield by 48% versus commercial NP without PGPB.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- biological fertilization with 50% and 75% of the NP fertilizatione0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 48%e0
- Comparator
- commercial NP dosage without PGPBe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combining biological fertilization with 50% and 75% of the NP fertilization, respectively, increased yield by 66% and 48% compared to the commercial NP dosage without PGPB.”
t0“Cabbage”
Claim · model-written summary
Authors conclude that NP dose can be reduced without harming cabbage yield.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Outcome
- NP fertilization dosage can be reduced without any detrimental impact on yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NP fertilization dosage can be reduced without any detrimental impact on yield.”
t0“Cabbage”
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