Abstract
A green-house experiment conducted to study N-Zn relationship in corn (Zea mays L.) using different sources of Zn and N in a Zn deficient Typic Torripsamment soil revealed that urea was one-third as efficient N source as ammonium sulphate (AS) and ammonium nitrate (AN). Shoot yield decreased with 400 ppm N from AS and urea but not from AN. Both N and Zn when applied together increased the yield as well as Zn concentration of shoot. However, the reverse was noted at 400 ppm N in case of shoot as well as root. The maximum increase in Zn concentration was observed with AN followed by urea and AS. Different sources of Zn had similar effect on N concentration. Zinc sulphate and rayplex zinc (R-Zn) were almost equally effective and superior to ZnO in increasing dry matter yield and shoot and root Zn concentration. Shoot N concentration decreased with increase in N level from 200 to 400 ppm N when Zn was not applied but reverse was noted in case of root.
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Claims 14
Claim · model-written summary
Urea was one-third as efficient as ammonium sulphate and ammonium nitrate.
- Treatment
- ureae0
- Outcome
- efficient N sourcee0
- Direction
- one-third as efficiente0
- Value
- one-thirde0
- Comparator
- ammonium sulphate (AS) and ammonium nitrate (AN)e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“urea was one-third as efficient N source as ammonium sulphate (AS) and ammonium nitrate (AN).”
t0“Maize”
Claim · model-written summary
400 ppm N from AS decreased shoot yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot yield decreased with 400 ppm N from AS and urea but not from AN.”
t0“Maize”
Claim · model-written summary
400 ppm N from urea decreased shoot yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot yield decreased with 400 ppm N from AS and urea but not from AN.”
t0“Maize”
Claim · model-written summary
400 ppm N from AN did not decrease shoot yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot yield decreased with 400 ppm N from AS and urea but not from AN.”
t0“Maize”
Claim · model-written summary
Combined N and Zn increased yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both N and Zn when applied together increased the yield as well as Zn concentration of shoot.”
t0“Maize”
Claim · model-written summary
Combined N and Zn increased shoot Zn concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both N and Zn when applied together increased the yield as well as Zn concentration of shoot.”
t0“Maize”
Claim · model-written summary
At 400 ppm N the shoot response reversed.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the reverse was noted at 400 ppm N in case of shoot as well as root.”
t0“Maize”
Claim · model-written summary
At 400 ppm N the root response reversed.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the reverse was noted at 400 ppm N in case of shoot as well as root.”
t0“Maize”
Claim · model-written summary
AN produced the maximum increase in Zn concentration, followed by urea and AS.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum increase in Zn concentration was observed with AN followed by urea and AS.”
t0“Maize”
Claim · model-written summary
Different Zn sources had similar effects on N concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different sources of Zn had similar effect on N concentration.”
t0“Maize”
Claim · model-written summary
Zinc sulphate and rayplex zinc were similarly effective and superior to ZnO for dry matter yield.
- Treatment
- Zinc sulphate and rayplex zinc (R-Zn)e0
- Outcome
- dry matter yielde0
- Direction
- increasinge0
- Comparator
- ZnOe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc sulphate and rayplex zinc (R-Zn) were almost equally effective and superior to ZnO in increasing dry matter yield and shoot and root Zn concentration.”
t0“Maize”
Claim · model-written summary
Zinc sulphate and rayplex zinc were superior to ZnO for shoot Zn concentration.
- Treatment
- Zinc sulphate and rayplex zinc (R-Zn)e0
- Outcome
- shoot and root Zn concentratione0
- Direction
- increasinge0
- Comparator
- ZnOe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc sulphate and rayplex zinc (R-Zn) were almost equally effective and superior to ZnO in increasing dry matter yield and shoot and root Zn concentration.”
t0“Maize”
Claim · model-written summary
Without Zn, increasing N from 200 to 400 ppm N decreased shoot N concentration.
- Treatment
- 400 ppm Ne0
- Outcome
- Shoot N concentratione0
- Direction
- decreasede0
- Qualifier
- when Zn was not appliede0
- Comparator
- 200e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot N concentration decreased with increase in N level from 200 to 400 ppm N when Zn was not applied but reverse was noted in case of root.”
t0“Maize”
Claim · model-written summary
Without Zn, increasing N from 200 to 400 ppm N increased root N concentration.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot N concentration decreased with increase in N level from 200 to 400 ppm N when Zn was not applied but reverse was noted in case of root.”
t0“Maize”
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See all 489 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.