Abstract
The effectiveness of organic manures (pig, poultry and farmyard manure, compost and vermicompost) as acid soil amendment for addressing Al toxicity and P deficiency was investigated using groundnut (cv. ICGS-76 crop) in comparison with conventional liming agent (CaCO3). The organic manures’ ash alkalinity and calcium carbonate equivalent varied from 5876 to 9506 K mol H+ kg−1 × 10−6 and 236 to 476 kg tonne−1 product, respectively. The exchangeable acidity (27.5% and 22.5%, respectively) and readily soluble Al (by 45% and 56%, respectively) in soil decreased significantly; whereas soil pH, organic carbon and microbial biomass carbon increased under the application of poultry and pig manure. In contrast to dehydrogenase and β-glucosidase enzymes, the activity of acid phosphomonoesterase in soil amended with pig and poultry manures decreased markedly. Better physicochemical and yield attributing characters (chlorophyll content, leaf thickness, cell membrane integrity, stomatal frequency, root length, root to shoot ratio, shoot dry weight, NPK uptake, pod yield and harvest index) and yield (66% and 64%, respectively) under poultry and pig manure could be related to improvement in soil fertility. Incubation study further corroborated that pig and poultry manures are the potential sources of amendments for amelioration of acid soils.
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Claims 15
Claim · model-written summary
Organic manures had ash alkalinity of 5876 to 9506 K mol H+ kg−1 × 10−6.
- Taxon
- groundnut
Arachis hypogaeae1 - Outcome
- ash alkalinitye0
- Value
- 5876 to 9506 K mol H+ kg−1 × 10−6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“organic manures’ ash alkalinity and calcium carbonate equivalent varied from 5876 to 9506 K mol H+ kg−1 × 10−6 and 236 to 476 kg tonne−1 product, respectively”
t0“Lime equivalence of organic manures”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Organic manures had calcium carbonate equivalent of 236 to 476 kg tonne−1 product.
- Taxon
- groundnut
Arachis hypogaeae1 - Outcome
- calcium carbonate equivalente0
- Value
- 236 to 476 kg tonne−1 producte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“organic manures’ ash alkalinity and calcium carbonate equivalent varied from 5876 to 9506 K mol H+ kg−1 × 10−6 and 236 to 476 kg tonne−1 product, respectively”
t0“Lime equivalence of organic manures”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure decreased exchangeable soil acidity by 27.5%.
- Taxon
- groundnut
Arachis hypogaeae2 - Treatment
- poultrye1
- Outcome
- exchangeable aciditye0
- Direction
- decreasede0
- Value
- 27.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“exchangeable acidity (27.5% and 22.5%, respectively) and readily soluble Al (by 45% and 56%, respectively) in soil decreased significantly”
e1“application of poultry and pig manure”
e2“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure decreased exchangeable soil acidity by 22.5%.
- Taxon
- groundnut
Arachis hypogaeae2 - Treatment
- pig manuree1
- Outcome
- exchangeable aciditye0
- Direction
- decreasede0
- Value
- 22.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“exchangeable acidity (27.5% and 22.5%, respectively) and readily soluble Al (by 45% and 56%, respectively) in soil decreased significantly”
e1“application of poultry and pig manure”
e2“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure decreased readily soluble soil Al by 45%.
- Taxon
- groundnut
Arachis hypogaeae2 - Treatment
- poultrye1
- Outcome
- readily soluble Ale0
- Direction
- decreasede0
- Value
- 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“readily soluble Al (by 45% and 56%, respectively) in soil decreased significantly”
e1“application of poultry and pig manure”
e2“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure decreased readily soluble soil Al by 56%.
- Taxon
- groundnut
Arachis hypogaeae2 - Treatment
- pig manuree1
- Outcome
- readily soluble Ale0
- Direction
- decreasede0
- Value
- 56%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“readily soluble Al (by 45% and 56%, respectively) in soil decreased significantly”
e1“application of poultry and pig manure”
e2“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure increased soil pH, organic carbon and microbial biomass carbon.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- poultrye0
- Outcome
- soil pH, organic carbon and microbial biomass carbone0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“soil pH, organic carbon and microbial biomass carbon increased under the application of poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure increased soil pH, organic carbon and microbial biomass carbon.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- pig manuree0
- Outcome
- soil pH, organic carbon and microbial biomass carbone0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“soil pH, organic carbon and microbial biomass carbon increased under the application of poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure decreased soil acid phosphomonoesterase activity.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- pige0
- Outcome
- activity of acid phosphomonoesterase in soile0
- Direction
- decreased markedlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“activity of acid phosphomonoesterase in soil amended with pig and poultry manures decreased markedly”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure decreased soil acid phosphomonoesterase activity.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- poultry manurese0
- Outcome
- activity of acid phosphomonoesterase in soile0
- Direction
- decreased markedlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“activity of acid phosphomonoesterase in soil amended with pig and poultry manures decreased markedly”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure improved groundnut physicochemical and yield-attributing traits.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- poultrye0
- Outcome
- physicochemical and yield attributing characterse0
- Direction
- Bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Better physicochemical and yield attributing characters (chlorophyll content, leaf thickness, cell membrane integrity, stomatal frequency, root length, root to shoot ratio, shoot dry weight, NPK uptake, pod yield and harvest index) and yield (66% and 64%, respectively) under poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure improved groundnut physicochemical and yield-attributing traits.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- pig manuree0
- Outcome
- physicochemical and yield attributing characterse0
- Direction
- Bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Better physicochemical and yield attributing characters (chlorophyll content, leaf thickness, cell membrane integrity, stomatal frequency, root length, root to shoot ratio, shoot dry weight, NPK uptake, pod yield and harvest index) and yield (66% and 64%, respectively) under poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Poultry manure raised groundnut yield by 66%.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- poultrye0
- Outcome
- yielde0
- Direction
- increaseinferrede0
- Value
- 66%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“yield (66% and 64%, respectively) under poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig manure raised groundnut yield by 64%.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- pig manuree0
- Outcome
- yielde0
- Direction
- increaseinferrede0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“yield (66% and 64%, respectively) under poultry and pig manure”
e1“using groundnut (cv. ICGS-76 crop)”
Claim · model-written summary
Pig and poultry manures were identified as potential acid-soil amendments.
- Taxon
- groundnut
Arachis hypogaeae1 - Outcome
- potential sources of amendments for amelioration of acid soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“pig and poultry manures are the potential sources of amendments for amelioration of acid soils”
e1“using groundnut (cv. ICGS-76 crop)”
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