Abstract
Bone char (BC), being rich in phosphorus (P), calcium (Ca) and magnesium (Mg), was tested for its P fertilizing potential for potato, wheat, and onion growth. The effects of different rates of crude BC and BC inoculated with Trichoderma harzianum to increase the P solubilization were compared to P fertilization with pure Ca(H 2 PO 4 ) 2 in a pot experiment. While Ca(H 2 PO 4 ) 2 increased the dry matter yield and P concentration of plants compared to the non-fertilized control, the results for the BC treatments were inconsistent. An increase in dry matter yield was only observed for potatoes after application of BC (1000 mg P kg -1 ), whereas wheat plants showed no response to all BC application levels, and dry matter yield of onions decreased. An increase in the plant’s P concentration after BC application was observed for wheat, while plant’s P was unaffected in onions and decreased in potatoes. The inconsistency of the dry matter yield and P concentration of plants after BC application is most likely caused by an insufficient incubation time of the BC added to the sub strate, the application of lime carbonate, and the slightly acidic pH of the substrate all leading to a reduction in P dissolution from BC. However, initial results of the P utilization for potatoes of this pot experiment demonstrate that BC might be a potential P fertilizer, but further experiments are necessary to study the effect of incubation time, type of soil, and the mode of application.
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Claims 9
Claim · model-written summary
Bone char applied at 1000 mg P kg -1 increased dry matter yield of potatoes.
- Taxon
- potatoes
Solanum tuberosume2 - Treatment
- application of BC (1000 mg P kg -1)e2
- Outcome
- dry matter yielde2
- Direction
- An increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“An increase in dry matter yield was only observed for potatoes after application of BC (1000 mg P kg -1), whereas wheat plants showed no response to all BC application levels, and dry matter yield of onions decreased”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Wheat showed no response in the response variable to any bone char application level.
- Taxon
- wheat
Triticum aestivume2 - Treatment
- all BC application levelse2
- Outcome
- responsee2
- Direction
- no responsee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“An increase in dry matter yield was only observed for potatoes after application of BC (1000 mg P kg -1), whereas wheat plants showed no response to all BC application levels, and dry matter yield of onions decreased”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Onion dry matter yield decreased after bone char application.
- Taxon
- onions
Allium cepae2 - Treatment
- BCe2
- Outcome
- dry matter yielde2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“An increase in dry matter yield was only observed for potatoes after application of BC (1000 mg P kg -1), whereas wheat plants showed no response to all BC application levels, and dry matter yield of onions decreased”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Wheat P concentration increased after bone char application.
- Taxon
- wheatTriticum aestivume3
- Treatment
- BC applicatione3
- Outcome
- P concentratione3
- Direction
- An increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“An increase in the plant’s P concentration after BC application was observed for wheat, while plant’s P was unaffected in onions and decreased in potatoes”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Onion plant P concentration was unaffected by bone char application.
- Taxon
- onionsAllium cepae3
- Treatment
- BC applicatione3
- Outcome
- plant’s Pe3
- Direction
- unaffectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“An increase in the plant’s P concentration after BC application was observed for wheat, while plant’s P was unaffected in onions and decreased in potatoes”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Potato plant P concentration decreased after bone char application.
- Taxon
- potatoesSolanum tuberosume3
- Treatment
- BC applicatione3
- Outcome
- plant’s Pe3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“An increase in the plant’s P concentration after BC application was observed for wheat, while plant’s P was unaffected in onions and decreased in potatoes”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Ca(H2PO4)2 increased dry matter yield and P concentration relative to the non-fertilized control.
- Taxon
- potatoes, wheat, and onionsSolanum tuberosumTriticum aestivumAllium cepat0
- Treatment
- Ca(H 2 PO 4 ) 2e1
- Outcome
- dry matter yield and P concentratione1
- Direction
- increasede1
- Comparator
- non-fertilized controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“While Ca(H 2 PO 4 ) 2 increased the dry matter yield and P concentration of plants compared to the non-fertilized control, the results for the BC treatments were inconsistent”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Inconsistent yield and P concentration after bone char application are most likely caused by insufficient incubation time.
- Taxon
- potatoes, wheat, and onionsSolanum tuberosumTriticum aestivumAllium cepat0
- Outcome
- dry matter yield and P concentration of plantse4
- Qualifier
- insufficient incubation timee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The inconsistency of the dry matter yield and P concentration of plants after BC application is most likely caused by an insufficient incubation time of the BC added to the sub strate”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
Claim · model-written summary
Bone char might be a potential P fertilizer for potatoes, wheat and onions.
- Taxon
- potatoes, wheat, and onionsSolanum tuberosumTriticum aestivumAllium cepat0
- Outcome
- potential P fertilizere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“BC might be a potential P fertilizer”
t0“The phosphorus fertilizer value of bone char for potatoes, wheat, and onions: first results”
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- no effect
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See all 18 papers →calcium atom · yield · Triticum aestivum (wheat)Results differ
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See all 25 papers →calcium atom · yield · Allium cepa (onion)Results agree
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- positive
- positive
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See all 5 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.