Abstract
Foliar application of humic acid along with bio-inoculants in 4-year-old inarched guava cv. Lalit in meadow orcharding system was carried out. Foliar application of humic acid @ 30 and 60 mL/L at bud burst to flowering stage and bio-inoculants (Phosphorus solubilizing bacteria (PSB) @ 10 mL/plant + Azotobacter chroococcum@ 10 g/plant, and PGPR @ 25 mL/plant + AM fungi @ 25 g/plant) in rhizosphere along with @ 90 and 80 percent of the recommended dose of fertilizers (RDF) of NPK (360:740:200 g/tree) was carried out. Application of humic acid applied at 60 mL/L along with PSB and A. chroococcum at 10 mL/plant beside 80 per cent of RDF-NPK inferred positive impact on growth traits throughout the winter season. This combination recorded vital increase in percent fruit set with reduced fruit drop. Fruit yield was 2.9 times higher over control. Fruit quality with this conjoint application also improved. Soil microflora recorded as actinomycetes, A. chroococcum, PSB and AM fungi were improved. This combination also exhibited significant increase in leaf N, P and K contents in the meadow geometry plant–soil interface. Maximum cumulative variance of 97.9 percent in PCA based on the Eigenvalue (>1) was recorded. Maximum total cumulative variance for vegetative growth characteristics, flowering and yield contributing traits in guava under meadow plantations were observed in PC4. Our findings emphasized the promising effects of humic acid and bio-inoculants on improvement of growth, nutrient profiling and biological activity at reduced application of NPK.
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Claims 9
Claim · model-written summary
Humic acid with PSB, Azotobacter and 80% fertilizer improved guava growth traits in winter.
- Treatment
- humic acid applied at 60 mL/L along with PSB and A. chroococcum at 10 mL/plant beside 80 per cent of RDF-NPKe0
- Interactor
- A. chroococcumAzotobacter chroococcume0symbiont
- Outcome
- growth traitse0
- Direction
- positive impacte0
Not reportedTaxonComparator
Verbatim
e0“Application of humic acid applied at 60 mL/L along with PSB and A. chroococcum at 10 mL/plant beside 80 per cent of RDF-NPK inferred positive impact on growth traits throughout the winter season.”
Claim · model-written summary
The treatment increased fruit set and reduced fruit drop.
Not reportedTaxonComparator
Verbatim
e0“This combination recorded vital increase in percent fruit set with reduced fruit drop.”
Claim · model-written summary
Fruit drop was reduced by the treatment.
Not reportedTaxonComparator
Verbatim
e0“This combination recorded vital increase in percent fruit set with reduced fruit drop.”
Claim · model-written summary
Guava fruit yield was 2.9 times higher than control.
Not reportedTaxonTreatment
Verbatim
e0“Fruit yield was 2.9 times higher over control.”
Claim · model-written summary
The conjoint application improved fruit quality.
Not reportedTaxonComparator
Verbatim
e0“Fruit quality with this conjoint application also improved.”
Claim · model-written summary
Actinomycetes, A. chroococcum, PSB and AM fungi in the soil increased.
- Interactor
- A. chroococcumAzotobacter chroococcume0symbiont
- Outcome
- Soil microflorae0
- Direction
- improvede0
Not reportedTaxonTreatmentComparator
Verbatim
e0“Soil microflora recorded as actinomycetes, A. chroococcum, PSB and AM fungi were improved.”
Claim · model-written summary
Leaf nitrogen, phosphorus and potassium contents increased significantly.
Not reportedTaxonComparator
Verbatim
e0“This combination also exhibited significant increase in leaf N, P and K contents in the meadow geometry plant–soil interface.”
Claim · model-written summary
PCA captured 97.9 percent maximum cumulative variance.
Not reportedTaxon
Verbatim
e0“Maximum cumulative variance of 97.9 percent in PCA based on the Eigenvalue (>1) was recorded.”
Claim · model-written summary
PC4 showed maximum total cumulative variance for guava vegetative, flowering and yield traits.
- Taxon
- guava
Psidium guajavae0 - Outcome
- total cumulative variancee0
- Setting
- meadow plantationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum total cumulative variance for vegetative growth characteristics, flowering and yield contributing traits in guava under meadow plantations were observed in PC4.”