Abstract
Investigations were conducted for assessing the impact of different sources and levels of zinc and zinc solubilizing bacteria on the yield and nutrient uptake by maize in calcareous soil. The study was conducted at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu on TNAU maize hybrid CO 6. The experiment was laid out in factorial completely randomized design (FCRD) with three factors replicated thrice. The treatments consisted of two sources of Zn [ZnS4Oand Zn3 (PO4)2] with three levels (0, 5, 7.5 kg Zn/ha) with and without zinc solubilizing bacteria (ZSB). ZnSO4 application performed better than Zn3(PO4)2 in improving the grain and stover yield. Among the levels of Zn, 7.5 kg Zn/ha registered significantly highest grain and stover yield. When compared to the treatments without ZSB inoculation, 4.2 per cent increase in mean grain and stover yield was registered with ZSB inoculation. With respect to uptake of nutrients, ZSB showed a significant increase in the grain, stover and total uptake of P, K, Zn, Fe, Mn and Cu. In addition sources of Zn also significantly increased the P uptake in grain and stover and Zn3 (PO4)2 registered higher P uptake than ZnSO. Sources and levels of Zn had no effect on the uptake of K, Fe, Mn and Cu whereas Zn uptake increased with increase in the levels of Zn and the highest uptake of Zn by maize was observed when Zn was applied at 7.5 kg/ha as ZnSO4.
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Claims 10
Claim · model-written summary
ZnSO4 application increased grain and stover yield more than Zn3(PO4)2.
- Treatment
- ZnSO4 applicatione1
- Outcome
- grain and stover yielde1
- Direction
- performed bettere1
- Comparator
- Zn3(PO4)2e1
- Setting
- calcareous soilt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e1“ZnSO4 application performed better than Zn3(PO4)2 in improving the grain and stover yield”
Claim · model-written summary
The 7.5 kg Zn/ha level gave the highest grain and stover yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e2“Among the levels of Zn, 7.5 kg Zn/ha registered significantly highest grain and stover yield”
Claim · model-written summary
ZSB inoculation increased mean grain and stover yield by 4.2 per cent compared with no ZSB inoculation.
- Treatment
- ZSB inoculatione3
- Interactor
- ZSBe3symbiont
- Outcome
- mean grain and stover yielde3
- Direction
- increasee3
- Value
- 4.2 per cente3
- Comparator
- treatments without ZSB inoculatione3
- Setting
- calcareous soilt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e3“When compared to the treatments without ZSB inoculation, 4.2 per cent increase in mean grain and stover yield was registered with ZSB inoculation”
Claim · model-written summary
ZSB significantly increased total uptake of P, K and Zn in grain and stover.
- Treatment
- ZSBe4
- Interactor
- ZSBe4symbiont
- Outcome
- total uptake of P, K, Zne4
- Direction
- increasee4
- Setting
- calcareous soilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e4“ZSB showed a significant increase in the grain, stover and total uptake of P, K, Zn, Fe, Mn and Cu”
Claim · model-written summary
ZSB significantly increased total uptake of Fe, Mn and Cu in grain and stover.
- Treatment
- ZSBe4
- Interactor
- ZSBe4symbiont
- Outcome
- Fe, Mn and Cue4
- Direction
- increasee4
- Setting
- calcareous soilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e4“ZSB showed a significant increase in the grain, stover and total uptake of P, K, Zn, Fe, Mn and Cu”
Claim · model-written summary
Sources of Zn significantly increased P uptake in grain and stover.
- Treatment
- sources of Zne5
- Outcome
- P uptake in grain and stovere5
- Direction
- increasede5
- Setting
- calcareous soilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e5“sources of Zn also significantly increased the P uptake in grain and stover and Zn3 (PO4)2 registered higher P uptake than ZnSO”
Claim · model-written summary
Zn3(PO4)2 gave higher P uptake than ZnSO4.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e5“sources of Zn also significantly increased the P uptake in grain and stover and Zn3 (PO4)2 registered higher P uptake than ZnSO”
Claim · model-written summary
Sources and levels of Zn had no effect on uptake of K, Fe, Mn and Cu.
- Treatment
- Sources and levels of Zne6
- Outcome
- uptake of K, Fe, Mn and Cue6
- Direction
- no effecte6
- Setting
- calcareous soilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e6“Sources and levels of Zn had no effect on the uptake of K, Fe, Mn and Cu”
Claim · model-written summary
Zn uptake increased with increasing Zn levels.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e0“Zn uptake increased with increase in the levels of Zn”
Claim · model-written summary
The highest maize Zn uptake occurred when Zn was applied at 7.5 kg/ha as ZnSO4.
- Treatment
- Zn was applied at 7.5 kg/ha as ZnSO4e7
- Outcome
- uptake of Zn by maizee7
- Direction
- higheste7
- Setting
- calcareous soilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“maize in calcareous soil”
e7“the highest uptake of Zn by maize was observed when Zn was applied at 7.5 kg/ha as ZnSO4”
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