Abstract
The experiment was conducted at Kulumsa, South East Ethiopia, using four levels of nitrogen (N) (0, 50,100 and 150 kg N ha−1) and four levels of phosphorus (P) (0, 35, 70 and 105 kg P2O5 ha−1) fertilizers arranged in 4 × 4 factorial arrangements in randomized complete block design with three replications. The available P was increased after harvest due to the application of N and P fertilizer at the rates of 100 or 150 kg N ha−1 and 70 or 105 kg P2O5 ha−1. More specifically, nutrients concentration and nutrient uptake were significantly (p < .01) varied among treatment combinations and nutrient use efficiency was declined by increasing N and P after optimum rates. The higher physiological efficiency of N (53.47 kg kg−1) and P (580.41 kg kg−1) and the highest apparent recovery of N (19.62%) and P (2.47%) was recorded from application of 50 kg N ha−1 and P at 70 kg P2O5 ha−1 and the highest agronomic efficiency of N (10.78 kg kg−1) and P (15.25 kg kg−1) was recorded from N at the rate of 50 kg N ha−1 and P at 35 kg P2O5 ha−1, respectively. The combination of N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1 was promising combination that generated highest net benefit 488,878.5 ETB (Ethiopian birr) ha−1 with the highest marginal rate of return (36638%) and gave the highest seed yield (1858.82 kg ha−1) with yield increment of about 57.72% over the control.
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Claims 13
Claim · model-written summary
Nutrient concentration and uptake of onion varied significantly among the nitrogen and phosphorus treatment combinations.
- Taxon
- onion
Allium cepat0 - Outcome
- nutrients concentration and nutrient uptakee0
- Qualifier
- among treatment combinationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e0“nutrients concentration and nutrient uptake were significantly (p < .01) varied among treatment combinations”
Claim · model-written summary
Nutrient use efficiency declined as N and P were increased beyond optimum rates in onion.
- Taxon
- onionAllium cepat0
- Treatment
- increasing N and P after optimum ratese1
- Outcome
- nutrient use efficiencye1
- Direction
- declinede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e1“nutrient use efficiency was declined by increasing N and P after optimum rates”
Claim · model-written summary
Physiological efficiency of N was higher (53.47 kg kg-1) at 50 kg N and 70 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- 50 kg N ha−1 and P at 70 kg P2O5 ha−1e2
- Outcome
- physiological efficiencye2
- Direction
- highere2
- Value
- 53.47 kg kg−1e2
- Qualifier
- of Ne2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e2“The higher physiological efficiency of N (53.47 kg kg−1) and P (580.41 kg kg−1) and the highest apparent recovery of N (19.62%) and P (2.47%) was recorded from application of 50 kg N ha−1 and P at 70 kg P2O5 ha−1”
Claim · model-written summary
Physiological efficiency of P was higher (580.41 kg kg-1) at 50 kg N and 70 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- 50 kg N ha−1 and P at 70 kg P2O5 ha−1e2
- Outcome
- physiological efficiencye2
- Direction
- highere2
- Value
- 580.41 kg kg−1e2
- Qualifier
- and Pe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e2“The higher physiological efficiency of N (53.47 kg kg−1) and P (580.41 kg kg−1) and the highest apparent recovery of N (19.62%) and P (2.47%) was recorded from application of 50 kg N ha−1 and P at 70 kg P2O5 ha−1”
Claim · model-written summary
Apparent recovery of N was highest (19.62%) at 50 kg N and 70 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- 50 kg N ha−1 and P at 70 kg P2O5 ha−1e2
- Outcome
- apparent recoverye2
- Direction
- higheste2
- Value
- 19.62%e2
- Qualifier
- of Ne2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e2“The higher physiological efficiency of N (53.47 kg kg−1) and P (580.41 kg kg−1) and the highest apparent recovery of N (19.62%) and P (2.47%) was recorded from application of 50 kg N ha−1 and P at 70 kg P2O5 ha−1”
Claim · model-written summary
Apparent recovery of P was highest (2.47%) at 50 kg N and 70 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- 50 kg N ha−1 and P at 70 kg P2O5 ha−1e2
- Outcome
- apparent recoverye2
- Direction
- higheste2
- Value
- 2.47%e2
- Qualifier
- and Pe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e2“The higher physiological efficiency of N (53.47 kg kg−1) and P (580.41 kg kg−1) and the highest apparent recovery of N (19.62%) and P (2.47%) was recorded from application of 50 kg N ha−1 and P at 70 kg P2O5 ha−1”
Claim · model-written summary
Agronomic efficiency of N was highest (10.78 kg kg-1) at 50 kg N per ha.
- Taxon
- onionAllium cepat0
- Treatment
- N at the rate of 50 kg N ha−1e3
- Outcome
- agronomic efficiencye3
- Direction
- higheste3
- Value
- 10.78 kg kg−1e3
- Qualifier
- of Ne3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e3“the highest agronomic efficiency of N (10.78 kg kg−1) and P (15.25 kg kg−1) was recorded from N at the rate of 50 kg N ha−1 and P at 35 kg P2O5 ha−1, respectively”
Claim · model-written summary
Agronomic efficiency of P was highest (15.25 kg kg-1) at 35 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- P at 35 kg P2O5 ha−1e3
- Outcome
- agronomic efficiencye3
- Direction
- higheste3
- Value
- 15.25 kg kg−1e3
- Qualifier
- and Pe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e3“the highest agronomic efficiency of N (10.78 kg kg−1) and P (15.25 kg kg−1) was recorded from N at the rate of 50 kg N ha−1 and P at 35 kg P2O5 ha−1, respectively”
Claim · model-written summary
The combination of 100 kg N and 70 kg P2O5 per ha gave the highest net benefit, 488,878.5 ETB per ha.
- Taxon
- onionAllium cepat0
- Treatment
- N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1e4
- Outcome
- net benefite4
- Direction
- higheste4
- Value
- 488,878.5 ETB (Ethiopian birr) ha−1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e4“The combination of N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1 was promising combination that generated highest net benefit 488,878.5 ETB (Ethiopian birr) ha−1”
Claim · model-written summary
The combination of 100 kg N and 70 kg P2O5 per ha gave the highest marginal rate of return, 36638%.
- Taxon
- onionAllium cepat0
- Treatment
- N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1e4
- Outcome
- marginal rate of returne5
- Direction
- higheste5
- Value
- 36638%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e4“The combination of N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1 was promising combination that generated highest net benefit 488,878.5 ETB (Ethiopian birr) ha−1”
e5“with the highest marginal rate of return (36638%)”
Claim · model-written summary
The combination of 100 kg N and 70 kg P2O5 per ha gave the highest seed yield, 1858.82 kg per ha.
- Taxon
- onionAllium cepat0
- Treatment
- N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1e4
- Outcome
- seed yielde6
- Direction
- higheste6
- Value
- 1858.82 kg ha−1e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e4“The combination of N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1 was promising combination that generated highest net benefit 488,878.5 ETB (Ethiopian birr) ha−1”
e6“gave the highest seed yield (1858.82 kg ha−1) with yield increment of about 57.72% over the control”
Claim · model-written summary
The combination of 100 kg N and 70 kg P2O5 per ha increased seed yield by about 57.72% over the control.
- Taxon
- onionAllium cepat0
- Treatment
- N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1e4
- Outcome
- yield incremente6
- Direction
- increaseinferrede6
- Value
- 57.72%e6
- Comparator
- the controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e4“The combination of N at 100 kg N ha−1 and P at 70 kg P2O5 ha−1 was promising combination that generated highest net benefit 488,878.5 ETB (Ethiopian birr) ha−1”
e6“gave the highest seed yield (1858.82 kg ha−1) with yield increment of about 57.72% over the control”
Claim · model-written summary
Available P in the soil increased after harvest with N and P fertilizer at 100 or 150 kg N and 70 or 105 kg P2O5 per ha.
- Taxon
- onionAllium cepat0
- Treatment
- application of N and P fertilizer at the rates of 100 or 150 kg N ha−1 and 70 or 105 kg P2O5 ha−1e7
- Outcome
- available Pe7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion seed yield”
e7“The available P was increased after harvest due to the application of N and P fertilizer at the rates of 100 or 150 kg N ha−1 and 70 or 105 kg P2O5 ha−1”
The same questions in other papers
phosphorus · yield · Allium cepa (onion)Results differ
54 papers in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- no effect
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1 paper in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
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nitrogen · yield · Allium cepa (onion)Positive and negative results
156 papers in the same direction as this paper · 23 in the opposite direction · 4 reporting no difference from an alternative
- negative
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See all 184 papers →nitrogen · nutrient: efficiency · Allium cepa (onion)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
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See all 9 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.