Abstract
BACKGROUND: The influence of various biochars on crop yield and disease resistance of Capsicum annuum L. (sweet pepper) under modern, high input, intensive net house cultivation was tested over the course of 2011-2014 in the Arava desert region of Israel. A pot experiment with Lactuca sativa L. (lettuce) grown in the absence of fertilizer employed the 3-year-old field trial soils to determine if biochar treatments contributed to soil intrinsic fertility. RESULTS: Biochar amendments resulted in a significant increase in the number and weight of pepper fruits over 3 years. Concomitant with the increased yield, biochar significantly decreased the severity of powdery mildew (Leveillula taurica) disease and broad mite (Polyphagotarsonemus latus) pest infestation. Biochar additions resulted in increased soil organic matter but did not influence the pH, electrical conductivity or soil or plant mineral nutrients. Intrinsic fertility experiments with lettuce showed that two of the four biochar-treated field soils had significant positive impacts on lettuce fresh weight and total chlorophyll, carotenoid and anthocyanin contents. CONCLUSION: Biochar-based soil management can enhance the functioning of intensive, commercial, net house production of peppers under the tested conditions, resulting in increased crop yield and plant resistance to disease over several years. © 2017 Society of Chemical Industry.
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Claims 7
Claim · model-written summary
Biochar increased pepper fruit number and weight over three years.
- Taxon
- peppere0
- Organ / stage
- fruitse0
- Treatment
- Biochar amendmentse0
- Outcome
- number and weight of pepper fruitse0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“Biochar amendments resulted in a significant increase in the number and weight of pepper fruits over 3 years.”
Claim · model-written summary
Biochar reduced pepper powdery mildew severity.
- Taxon
- Capsicum annuum L. (sweet pepper)
Capsicum annuumt0 - Treatment
- biochare0
- Interactor
- Leveillula tauricae0pathogen
- Outcome
- severity of powdery mildew (Leveillula taurica) diseasee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar significantly decreased the severity of powdery mildew (Leveillula taurica) disease and broad mite (Polyphagotarsonemus latus) pest infestation.”
t0“Capsicum annuum L. (sweet pepper)”
Claim · model-written summary
Biochar reduced pepper broad mite infestation.
- Taxon
- Capsicum annuum L. (sweet pepper)Capsicum annuumt0
- Treatment
- biochare0
- Interactor
- Polyphagotarsonemus latus
Polyphagotarsonemus latuse0pest - Outcome
- broad mite (Polyphagotarsonemus latus) pest infestatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar significantly decreased the severity of powdery mildew (Leveillula taurica) disease and broad mite (Polyphagotarsonemus latus) pest infestation.”
t0“Capsicum annuum L. (sweet pepper)”
Claim · model-written summary
Biochar increased soil organic matter.
- Taxon
- Capsicum annuum L. (sweet pepper)Capsicum annuumt0
- Treatment
- Biochar additionse0
- Outcome
- soil organic mattere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar additions resulted in increased soil organic matter but did not influence the pH, electrical conductivity or soil or plant mineral nutrients.”
t0“Capsicum annuum L. (sweet pepper)”
Claim · model-written summary
Biochar did not influence pH, electrical conductivity, or soil or plant mineral nutrients.
- Taxon
- Capsicum annuum L. (sweet pepper)Capsicum annuumt0
- Treatment
- Biochar additionse0
- Outcome
- pH, electrical conductivity or soil or plant mineral nutrientse0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar additions resulted in increased soil organic matter but did not influence the pH, electrical conductivity or soil or plant mineral nutrients.”
t0“Capsicum annuum L. (sweet pepper)”
Claim · model-written summary
Two of four biochar-treated field soils increased lettuce fresh weight.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- biochar-treated field soilse0
- Outcome
- lettuce fresh weighte0
- Direction
- positive impactse0
- Qualifier
- two of the foure0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two of the four biochar-treated field soils had significant positive impacts on lettuce fresh weight and total chlorophyll, carotenoid and anthocyanin contents.”
Claim · model-written summary
Two of four biochar-treated field soils increased lettuce pigment contents.
- Taxon
- lettuceLactuca sativae0
- Treatment
- biochar-treated field soilse0
- Outcome
- total chlorophyll, carotenoid and anthocyanin contentse0
- Direction
- positive impactse0
- Qualifier
- two of the foure0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two of the four biochar-treated field soils had significant positive impacts on lettuce fresh weight and total chlorophyll, carotenoid and anthocyanin contents.”
The same questions in other papers
biochar · growth · Lactuca sativa (garden lettuce)Results differ
40 papers in the same direction as this paper · 11 in the opposite direction
- negative
- no effect
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See all 52 papers →biochar · nutrient: content · Capsicum annuum (sweet pepper)Positive and negative results
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biochar · soil: chemistry · Capsicum annuum (sweet pepper)Results agree
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- positive
- positive
- positive
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See all 5 papers →biochar · physiology: pigments · Lactuca sativa (garden lettuce)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
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See all 12 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.