Abstract
This study evaluated the effects of Plant Growth Promoting Rhizobacteria (PGPR) and Humic Acid (HA) on soil properties, microbial activity, and the growth and yield of pea plants over two years (2021-2023). Eight treatments were tested, combining various recommended doses of nutrients (RDN), PGPR, and HA. Soil properties were measured before and after the experiment to assess changes over time. Significant improvements in soil fertility were observed, particularly in treatments T4 [75% RDN + PGPR 1 + HA foliar and soil application] and T7 [75% RDN + PGPR 2 + HA foliar and soil application]. T7 recorded the highest increases in available nitrogen (527 kg ha−1), phosphorus (110 kg ha−1), and potassium (431 kg ha−1). Microbial biomass carbon was also highest in T7 (63.2 µg g−1 soil), indicating enhanced microbial activity. Enzyme activities (dehydrogenase, urease, phosphatase) were significantly elevated in T7, reflecting improved biochemical soil health. Agronomic parameters such as plant height, number of branches, and pod yield were also significantly higher in T4 and T7. T7 achieved the maximum plant height (91.7 cm), number of branches (14.6), and pod yield (84.2 q ha−1). The study concludes that integrating PGPR and HA with reduced chemical inputs can substantially improve soil fertility, microbial functions, and pea productivity. These findings highlight the potential of PGPR and HA as effective bioformulations for promoting sustainable and eco-friendly agricultural practices.
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Claims 11
Claim · model-written summary
Treatment T4 (75% recommended nutrient dose plus PGPR 1 plus foliar and soil humic acid) significantly improved soil fertility in pea.
- Taxon
- pea
Lathyrus oleraceust0 - Treatment
- 75% RDN + PGPR 1 + HA foliar and soil applicatione0
- Interactor
- PGPR 1e0symbiont
- Outcome
- soil fertilitye0
- Direction
- improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“Significant improvements in soil fertility were observed, particularly in treatments T4 [75% RDN + PGPR 1 + HA foliar and soil application] and T7 [75% RDN + PGPR 2 + HA foliar and soil application]”
Claim · model-written summary
Treatment T7 (75% recommended nutrient dose plus PGPR 2 plus foliar and soil humic acid) significantly improved soil fertility in pea.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- 75% RDN + PGPR 2 + HA foliar and soil applicatione0
- Interactor
- PGPR 2e0symbiont
- Outcome
- soil fertilitye0
- Direction
- improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“Significant improvements in soil fertility were observed, particularly in treatments T4 [75% RDN + PGPR 1 + HA foliar and soil application] and T7 [75% RDN + PGPR 2 + HA foliar and soil application]”
Claim · model-written summary
T7 recorded the highest increase in available nitrogen (527 kg ha−1) in the pea trial.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T7e0
- Outcome
- available nitrogene1
- Direction
- highest increasese0
- Value
- 527 kg ha−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 recorded the highest increases”
e1“available nitrogen (527 kg ha−1)”
Claim · model-written summary
T7 recorded the highest increase in available phosphorus (110 kg ha−1) in the pea trial.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T7e0
- Outcome
- phosphoruse1
- Direction
- highest increasese0
- Value
- 110 kg ha−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 recorded the highest increases”
e1“phosphorus (110 kg ha−1)”
Claim · model-written summary
T7 recorded the highest increase in available potassium (431 kg ha−1) in the pea trial.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T7e0
- Outcome
- potassiume1
- Direction
- highest increasese0
- Value
- 431 kg ha−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 recorded the highest increases”
e1“potassium (431 kg ha−1)”
Claim · model-written summary
Microbial biomass carbon was highest in T7 at 63.2 µg g−1 soil, indicating enhanced microbial activity.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T7e0
- Outcome
- Microbial biomass carbone0
- Direction
- higheste0
- Value
- 63.2 µg g−1 soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“Microbial biomass carbon was also highest in T7 (63.2 µg g−1 soil)”
Claim · model-written summary
Dehydrogenase, urease and phosphatase activities were significantly elevated in T7.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T7e0
- Outcome
- Enzyme activities (dehydrogenase, urease, phosphatase)e0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“Enzyme activities (dehydrogenase, urease, phosphatase) were significantly elevated in T7”
Claim · model-written summary
Plant height, number of branches and pod yield were significantly higher in T4.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- T4e0
- Outcome
- plant height, number of branches, and pod yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“Agronomic parameters such as plant height, number of branches, and pod yield were also significantly higher in T4 and T7”
Claim · model-written summary
T7 achieved the maximum plant height of 91.7 cm.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 achieved the maximum plant height (91.7 cm)”
Claim · model-written summary
T7 achieved the maximum number of branches, 14.6.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 achieved the maximum”
e1“number of branches (14.6)”
Claim · model-written summary
T7 achieved the maximum pod yield, 84.2 q ha−1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea ( Pisum sativum )”
e0“T7 achieved the maximum”
e1“pod yield (84.2 q ha−1)”
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3 papers more in this group
See all 7 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.