Abstract
Pigeonpea (Cajanus cajan L. Millsp.) when raised in pot-culture on an adequately fertilized loamy sand. Gangetic upland semi-arid alluvial soil (Ustifluvent) of Putti village, Bulandshahar district in western Uttar Pradesh showed positive responses to graded (1 to 25 mg kg−1 soil) Zn amendment. The increase in height, branching, production of pods and harvest index of pigeonpea was highest at 5 mg kg−1 Zn added soil which raised DTPA extractable soil Zn from 0.41 to 1.23 mg kg−1. The optimal growth of pigeonpea was at 1.23 mg kg−1 available soil Zn and in middle leaves the concentration of Zn was 42.2 mg kg−1 (d 67). Critical values helpful in predicting 50 per cent crop responses to Zn amendment were 0.52 mg kg−1 DTPA soil Zn and 25 mg Zn kg−1 in middle leaves, 0.90 mg kg−1 DTPA-Zn and 16.8 mg kg−1 leaf Zn for top yield. The threshold of deficiency values were 0.70 mg kg−1 for DTPA soil Zn and 23.6 mg kg−1 for leaf Zn. DTPA soil Zn valnes of 5.8 mg kg−1 and tissue Zn 43.4 mg kg−1 in middle leaves indicated marked toxicity of Zn for top yield. The corresponding values representing threshold of toxicity were 3.0 mg kg−1 DTPA extractable Zn and 36.8 mg kg−1 Zn in middle leaves. These values will be helpful in predicting Zn status of soils as well as for crop plants growing on them.
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Claims 15
Claim · model-written summary
Pigeonpea height, branching and pod production increased most at 5 mg kg-1 Zn added to soil.
- Taxon
- pigeonpea
Cajanus cajane0 - Treatment
- 5 mg kg−1 Zn added soile0
- Outcome
- height, branching, production of podse0
- Direction
- increasee0
- Qualifier
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in height, branching, production of pods and harvest index of pigeonpea was highest at 5 mg kg−1 Zn added soil”
Claim · model-written summary
Pigeonpea harvest index increased most at 5 mg kg-1 Zn added to soil.
- Taxon
- pigeonpeaCajanus cajane0
- Treatment
- 5 mg kg−1 Zn added soile0
- Outcome
- harvest indexe0
- Direction
- increasee0
- Qualifier
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in height, branching, production of pods and harvest index of pigeonpea was highest at 5 mg kg−1 Zn added soil”
Claim · model-written summary
Adding 5 mg kg-1 Zn raised DTPA extractable soil Zn from 0.41 to 1.23 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- 5 mg kg−1 Zn added soile1
- Outcome
- DTPA extractable soil Zne1
- Direction
- raisede1
- Value
- 0.41 to 1.23 mg kg−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“5 mg kg−1 Zn added soil which raised DTPA extractable soil Zn from 0.41 to 1.23 mg kg−1”
t0“pigeonpea”
Claim · model-written summary
Optimal pigeonpea growth occurred at 1.23 mg kg-1 available soil Zn.
- Taxon
- pigeonpeaCajanus cajane2
- Outcome
- available soil Zne2
- Value
- 1.23 mg kg−1e2
- Qualifier
- optimal growthe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The optimal growth of pigeonpea was at 1.23 mg kg−1 available soil Zn”
Claim · model-written summary
At optimal growth, Zn concentration in middle leaves of pigeonpea was 42.2 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- middle leavese3
- Outcome
- concentration of Zne3
- Value
- 42.2 mg kg−1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“in middle leaves the concentration of Zn was 42.2 mg kg−1”
t0“pigeonpea”
Claim · model-written summary
The critical DTPA soil Zn value for 50 per cent pigeonpea response to Zn amendment was 0.52 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- Critical valuese4
- Value
- 0.52 mg kg−1e4
- Qualifier
- DTPA soil Zne4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Critical values helpful in predicting 50 per cent crop responses to Zn amendment were 0.52 mg kg−1 DTPA soil Zn and 25 mg Zn kg−1 in middle leaves”
t0“pigeonpea”
Claim · model-written summary
The critical Zn level in middle leaves for 50 per cent pigeonpea response to Zn amendment was 25 mg Zn kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- middle leavese4
- Outcome
- Critical valuese4
- Value
- 25 mg Zn kg−1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Critical values helpful in predicting 50 per cent crop responses to Zn amendment were 0.52 mg kg−1 DTPA soil Zn and 25 mg Zn kg−1 in middle leaves”
t0“pigeonpea”
Claim · model-written summary
The critical DTPA soil Zn value for top yield was 0.90 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- top yielde5
- Value
- 0.90 mg kg−1e5
- Qualifier
- DTPA-Zne5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“0.90 mg kg−1 DTPA-Zn and 16.8 mg kg−1 leaf Zn for top yield”
t0“pigeonpea”
Claim · model-written summary
The critical leaf Zn value for top yield was 16.8 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- leafe5
- Outcome
- top yielde5
- Value
- 16.8 mg kg−1e5
- Qualifier
- leaf Zne5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“0.90 mg kg−1 DTPA-Zn and 16.8 mg kg−1 leaf Zn for top yield”
t0“pigeonpea”
Claim · model-written summary
The deficiency threshold for DTPA soil Zn was 0.70 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- threshold of deficiency valuese6
- Value
- 0.70 mg kg−1e6
- Qualifier
- DTPA soil Zne6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The threshold of deficiency values were 0.70 mg kg−1 for DTPA soil Zn and 23.6 mg kg−1 for leaf Zn”
t0“pigeonpea”
Claim · model-written summary
The deficiency threshold for leaf Zn was 23.6 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- leafe6
- Outcome
- threshold of deficiency valuese6
- Value
- 23.6 mg kg−1e6
- Qualifier
- leaf Zne6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The threshold of deficiency values were 0.70 mg kg−1 for DTPA soil Zn and 23.6 mg kg−1 for leaf Zn”
t0“pigeonpea”
Claim · model-written summary
A DTPA soil Zn value of 5.8 mg kg-1 indicated marked Zn toxicity for top yield.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- marked toxicity of Zn for top yielde7
- Value
- 5.8 mg kg−1e7
- Qualifier
- DTPA soil Zne7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“DTPA soil Zn valnes of 5.8 mg kg−1 and tissue Zn 43.4 mg kg−1 in middle leaves indicated marked toxicity of Zn for top yield”
t0“pigeonpea”
Claim · model-written summary
A tissue Zn value of 43.4 mg kg-1 in middle leaves indicated marked Zn toxicity for top yield.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- middle leavese7
- Outcome
- marked toxicity of Zn for top yielde7
- Value
- 43.4 mg kg−1e7
- Qualifier
- tissue Zne7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“DTPA soil Zn valnes of 5.8 mg kg−1 and tissue Zn 43.4 mg kg−1 in middle leaves indicated marked toxicity of Zn for top yield”
t0“pigeonpea”
Claim · model-written summary
The toxicity threshold for DTPA extractable soil Zn was 3.0 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- threshold of toxicitye0
- Value
- 3.0 mg kg−1e0
- Qualifier
- DTPA extractable Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The corresponding values representing threshold of toxicity were 3.0 mg kg−1 DTPA extractable Zn and 36.8 mg kg−1 Zn in middle leaves”
t0“pigeonpea”
Claim · model-written summary
The toxicity threshold for Zn in middle leaves was 36.8 mg kg-1.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- middle leavese0
- Outcome
- threshold of toxicitye0
- Value
- 36.8 mg kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The corresponding values representing threshold of toxicity were 3.0 mg kg−1 DTPA extractable Zn and 36.8 mg kg−1 Zn in middle leaves”
t0“pigeonpea”
The same questions in other papers
zinc atom · yield · Cajanus cajan (pigeon pea)Results differ
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- positive
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See all 18 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.