Abstract
Abstract A field experiment was conducted in the forest-savanna transition zone of Nigeria from May to July 2014 and September to November 2015 to determine the impacts of poultry manure (PM) and NPK fertilizer on soil physical properties, and growth and yield of carrot (Daucus carota L.). The five treatments included no manure or fertilizer (control); 10, 20, and 30 megagrams (Mg)·ha -1 of PM; and 300 kg·ha -1 of 15 N-15 P-15 K fertilizer. All levels of PM reduced soil bulk density and temperature, and improved total porosity and moisture content compared to the NPK fertilizer and the control. Plant height, number of leaves, root diameter, root length, and fresh root yield in the PM and NPK fertilizer treatments were improved compared to the control. Growth and yield parameters of carrot plants treated with 20 and 30 Mg·ha -1 PM were higher than the other treatments. The 10 Mg·ha -1 PM and NPK fertilizer treatments produced similar growth and yield responses. There was an interaction for year (Y) × fertilizer (F) on plant height, number of leaves, and fresh root yield. Relative to the control 10, 20, or 30 Mg·ha -1 PM and NPK fertilizer increased fresh root yield of carrot by 39.9%, 62.0%, 64.9%, and 37.3%, respectively. The 20 Mg·ha -1 PM treatment best improved soil properties and carrot productivity as indicated by the benefit-to-cost ratio.
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Claims 11
Claim · model-written summary
All poultry manure rates reduced soil bulk density and temperature against fertilizer and control.
- Taxon
- carrot
Daucus carotae1 - Treatment
- PMe0
- Outcome
- soil bulk density and temperaturee0
- Direction
- reducede0
- Comparator
- the NPK fertilizer and the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All levels of PM reduced soil bulk density and temperature, and improved total porosity and moisture content compared to the NPK fertilizer and the control”
e1“growth and yield of carrot (Daucus carota L.)”
Claim · model-written summary
All poultry manure rates improved soil porosity and moisture against fertilizer and control.
- Taxon
- carrotDaucus carotae1
- Treatment
- PMe0
- Outcome
- total porosity and moisture contente0
- Direction
- improvede0
- Comparator
- the NPK fertilizer and the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All levels of PM reduced soil bulk density and temperature, and improved total porosity and moisture content compared to the NPK fertilizer and the control”
e1“growth and yield of carrot (Daucus carota L.)”
Claim · model-written summary
Manure and NPK fertilizer improved carrot growth and fresh root yield against control.
- Taxon
- carrotDaucus carotae1
- Treatment
- PM and NPK fertilizer treatmentse0
- Outcome
- Plant height, number of leaves, root diameter, root length, and fresh root yielde0
- Direction
- improvede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, number of leaves, root diameter, root length, and fresh root yield in the PM and NPK fertilizer treatments were improved compared to the control”
e1“growth and yield of carrot (Daucus carota L.)”
Claim · model-written summary
Twenty and thirty Mg per hectare PM gave higher growth and yield than other treatments.
- Taxon
- carrotDaucus carotae0
- Treatment
- 20 and 30 Mg·ha -1 PMe0
- Outcome
- Growth and yield parameterse0
- Direction
- highere0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield parameters of carrot plants treated with 20 and 30 Mg·ha -1 PM were higher than the other treatments”
Claim · model-written summary
Ten Mg per hectare PM and NPK fertilizer produced similar growth and yield responses.
- Taxon
- carrotDaucus carotae1
- Outcome
- similar growth and yield responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 10 Mg·ha -1 PM and NPK fertilizer treatments produced similar growth and yield responses”
e1“growth and yield of carrot (Daucus carota L.)”
Claim · model-written summary
Year and fertilizer interacted for plant height, leaf number and fresh root yield.
- Taxon
- carrotDaucus carotae1
- Treatment
- fertilizere0
- Outcome
- plant height, number of leaves, and fresh root yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an interaction for year (Y) × fertilizer (F) on plant height, number of leaves, and fresh root yield”
e1“growth and yield of carrot (Daucus carota L.)”
Claim · model-written summary
Ten Mg per hectare PM raised fresh root yield 39.9% against control.
- Taxon
- carrotDaucus carotae0
- Treatment
- 10e0
- Outcome
- fresh root yielde0
- Direction
- increasede0
- Value
- 39.9%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to the control 10, 20, or 30 Mg·ha -1 PM and NPK fertilizer increased fresh root yield of carrot by 39.9%, 62.0%, 64.9%, and 37.3%, respectively”
Claim · model-written summary
Twenty Mg per hectare PM raised fresh root yield 62.0% against control.
- Taxon
- carrotDaucus carotae0
- Treatment
- 20e0
- Outcome
- fresh root yielde0
- Direction
- increasede0
- Value
- 62.0%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to the control 10, 20, or 30 Mg·ha -1 PM and NPK fertilizer increased fresh root yield of carrot by 39.9%, 62.0%, 64.9%, and 37.3%, respectively”
Claim · model-written summary
Thirty Mg per hectare PM raised fresh root yield 64.9% against control.
- Taxon
- carrotDaucus carotae0
- Treatment
- 30 Mg·ha -1 PMe0
- Outcome
- fresh root yielde0
- Direction
- increasede0
- Value
- 64.9%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to the control 10, 20, or 30 Mg·ha -1 PM and NPK fertilizer increased fresh root yield of carrot by 39.9%, 62.0%, 64.9%, and 37.3%, respectively”
Claim · model-written summary
NPK fertilizer raised fresh root yield 37.3% against control.
- Taxon
- carrotDaucus carotae0
- Treatment
- NPK fertilizere0
- Outcome
- fresh root yielde0
- Direction
- increasede0
- Value
- 37.3%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative to the control 10, 20, or 30 Mg·ha -1 PM and NPK fertilizer increased fresh root yield of carrot by 39.9%, 62.0%, 64.9%, and 37.3%, respectively”
Claim · model-written summary
Twenty Mg per hectare PM best improved soil properties and carrot productivity by benefit-to-cost ratio.
- Taxon
- carrotDaucus carotae0
- Outcome
- 20 Mg·ha -1 PM treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 20 Mg·ha -1 PM treatment best improved soil properties and carrot productivity as indicated by the benefit-to-cost ratio”
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See all 10 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.