Abstract
An experiment was conducted during 2021 and 2022 at the research farm of ICAR-Indian Institute of Maize Research, Ludhiana, Punjab to study the efficacy of zinc oxide and zinc sulphate for urea coating to achieve higher productivity in maize (Zea mays L.). Experiment was laid out in a randomized block design (RBD) comprised of 11 treatments, viz. no Zn; 0.05% of Zn through ZnO; 0.12% of Zn through ZnO; 0.24% of Zn through ZnO; 0.47% of Zn through ZnO; 0.95% of Zn through ZnO; 0.26% of Zn through ZnSO4; 0.52% of Zn through ZnSO4; 1.03% of Zn through ZnSO4; 2.07% of Zn through ZnSO4; and 4.15% of Zn through ZnSO4, replicated thrice. Results indicated that grains/cob and cob weight/plant recorded higher with 1.03%, 2.07% and 4.15% of Zn through ZnSO4 compared to no Zn. Zn at 2.07% (5.68 and 6.36) and 4.15% (5.71 and 6.37) through ZnSO4 recorded higher grain yield followed by 0.95% of Zn (5.50 and 6.23) through ZnO and 1.03% (5.42 and 6.25) of Zn through ZnSO4 in 2021 and 2022. A higher Zn content in grain was registered with 4.15% (27.70 and 27.87 mg/kg) and 2.07% (26.33 and 27.67 mg/kg) of Zn through ZnSO4. Overall, Zn at 2.07% through ZnSO4 was found suitable for urea coating to enhance productivity, soil enzymatic activities and residual soil fertility in spring maize.
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Claims 6
Claim · model-written summary
Three zinc sulphate rates increased grains per cob and cob weight versus no zinc.
- Treatment
- 1.03%, 2.07% and 4.15% of Zn through ZnSO4e0
- Outcome
- grains/cob and cob weight/plante0
- Direction
- highere0
- Comparator
- no Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“grains/cob and cob weight/plant recorded higher with 1.03%, 2.07% and 4.15% of Zn through ZnSO4 compared to no Zn”
e1“maize (Zea mays L.)”
Claim · model-written summary
Grain yield at 2.07% zinc sulphate was 5.68 and 6.36 in 2021 and 2022.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zn at 2.07% (5.68 and 6.36) and 4.15% (5.71 and 6.37) through ZnSO4 recorded higher grain yield”
e1“maize (Zea mays L.)”
Claim · model-written summary
Grain yield at 4.15% zinc sulphate was 5.71 and 6.37 in 2021 and 2022.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“4.15% (5.71 and 6.37) through ZnSO4 recorded higher grain yield”
e1“maize (Zea mays L.)”
Claim · model-written summary
Grain zinc content at 4.15% zinc sulphate was 27.70 and 27.87 mg/kg.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“A higher Zn content in grain was registered with 4.15% (27.70 and 27.87 mg/kg)”
e1“maize (Zea mays L.)”
Claim · model-written summary
Grain zinc content at 2.07% zinc sulphate was 26.33 and 27.67 mg/kg.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“2.07% (26.33 and 27.67 mg/kg) of Zn through ZnSO4”
e1“A higher Zn content in grain”
e2“maize (Zea mays L.)”
Claim · model-written summary
The authors found 2.07% zinc sulphate suitable for urea coating to enhance productivity, soil enzymes and residual fertility.
- Outcome
- urea coating to enhance productivity, soil enzymatic activities and residual soil fertilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Zn at 2.07% through ZnSO4 was found suitable for urea coating to enhance productivity, soil enzymatic activities and residual soil fertility in spring maize”
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- no effect
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See all 441 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.