Abstract
The zinc (Zn) requirement under intensive cropping system is higher due to continuous mining and the zinc fertilizers applied to the soil being adsorbed on soil colloids. Hence, detailed information of Zn is essential to understand the bioavailability processes. The present study was undertaken on an ongoing experiment initiated in 2012 at research farm of Department of Soil Science, Ludhiana with Zn levels i.e., 2.5, 5.0, 7.5 and 10.0 kg Zn ha−1 and three frequencies (once in six-year, alternate year, and every year) along with a control treatment. The maize and wheat yield were highest with the application of 10 kg Zn ha−1 every year which was at par with 7.5 kg Zn ha−1 every year and alternate year. The Zn uptake in maize and wheat was highest with 10 kg Zn ha−1 every year, which was statistically at par with 7.5 kg Zn ha−1 every year and 10 kg Zn ha−1 alternate years. The values of different fractions of zinc were higher with the application of 10 kg Zn ha−1 every year which was at par with 7.5 kg Zn ha−1 of every year and 10 kg Zn ha−1of alternate year. The different fractions of Zn i.e., residual zinc, crystalline FeO bound zinc, amorphous FeO bound zinc, organically bound zinc, manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil. In overall it is concluded that the application of 10.0 kg Zn ha−1 in alternate year was found better for obtaining high crop yield and Zn uptake and for maintaining optimum available Zn in maize–wheat cropping system.
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Claims 14
Claim · model-written summary
Maize yield was highest under annual 10 kg Zn ha−1, at par with annual and alternate-year 7.5 kg Zn ha−1.
- Treatment
- 10 kg Zn ha−1 every yeare0
- Outcome
- maize and wheat yielde0
- Direction
- higheste0
- Comparator
- 7.5 kg Zn ha−1 every year and alternate yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The maize and wheat yield were highest with the application of 10 kg Zn ha−1 every year which was at par with 7.5 kg Zn ha−1 every year and alternate year.”
Claim · model-written summary
Wheat yield was highest under annual 10 kg Zn ha−1, at par with annual and alternate-year 7.5 kg Zn ha−1.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- 10 kg Zn ha−1 every yeare0
- Outcome
- maize and wheat yielde0
- Direction
- higheste0
- Comparator
- 7.5 kg Zn ha−1 every year and alternate yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The maize and wheat yield were highest with the application of 10 kg Zn ha−1 every year which was at par with 7.5 kg Zn ha−1 every year and alternate year.”
Claim · model-written summary
Maize zinc uptake was highest with annual 10 kg Zn ha−1 and statistically at par with annual 7.5 kg or alternate-year 10 kg Zn ha−1.
- Treatment
- 10 kg Zn ha−1 every yeare0
- Outcome
- Zn uptake in maize and wheate0
- Direction
- higheste0
- Comparator
- 7.5 kg Zn ha−1 every year and 10 kg Zn ha−1 alternate yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The Zn uptake in maize and wheat was highest with 10 kg Zn ha−1 every year, which was statistically at par with 7.5 kg Zn ha−1 every year and 10 kg Zn ha−1 alternate years.”
Claim · model-written summary
Wheat zinc uptake was highest with annual 10 kg Zn ha−1 and statistically at par with annual 7.5 kg or alternate-year 10 kg Zn ha−1.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- 10 kg Zn ha−1 every yeare0
- Outcome
- Zn uptake in maize and wheate0
- Direction
- higheste0
- Comparator
- 7.5 kg Zn ha−1 every year and 10 kg Zn ha−1 alternate yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The Zn uptake in maize and wheat was highest with 10 kg Zn ha−1 every year, which was statistically at par with 7.5 kg Zn ha−1 every year and 10 kg Zn ha−1 alternate years.”
Claim · model-written summary
Soil zinc fractions were higher with annual 10 kg Zn ha−1, at par with the stated lower-frequency treatments.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Treatment
- 10 kg Zn ha−1 every yeare0
- Outcome
- different fractions of zince0
- Direction
- highere0
- Comparator
- 7.5 kg Zn ha−1 of every year and 10 kg Zn ha−1of alternate yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“The values of different fractions of zinc were higher with the application of 10 kg Zn ha−1 every year which was at par with 7.5 kg Zn ha−1 of every year and 10 kg Zn ha−1of alternate year.”
t0“maize–wheat system”
Claim · model-written summary
Residual zinc contributed 56.7% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- residual zince0
- Value
- 56.7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“residual zinc, crystalline FeO bound zinc, amorphous FeO bound zinc, organically bound zinc, manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Crystalline FeO bound zinc contributed 16.0% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- crystalline FeO bound zince0
- Value
- 16.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“crystalline FeO bound zinc, amorphous FeO bound zinc, organically bound zinc, manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Amorphous FeO bound zinc contributed 7.5% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- amorphous FeO bound zince0
- Value
- 7.5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“amorphous FeO bound zinc, organically bound zinc, manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Organically bound zinc contributed 5.1% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- organically bound zince0
- Value
- 5.1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“organically bound zinc, manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Manganese oxide bound zinc contributed 5.0% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- manganese oxide bound zince0
- Value
- 5.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“manganese oxide bound zinc, carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Carbonate bound zinc contributed 4.8% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- carbonate bound zince0
- Value
- 4.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“carbonate bound zinc, specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Specifically adsorbed zinc contributed 2.3% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- specifically adsorbed zince0
- Value
- 2.3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“specifically adsorbed zinc and water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
Water soluble and exchangeable zinc contributed 2.2% of total soil zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayst0 - Outcome
- water soluble + exchangeable zince0
- Value
- 2.2%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“water soluble + exchangeable zinc contribute 56.7, 16.0, 7.5, 5.1, 5.0, 4.8, 2.3, 2.2% to total Zn in soil.”
t0“maize–wheat system”
Claim · model-written summary
The authors recommend 10.0 kg Zn ha−1 in alternate years for yield, uptake, and available zinc.
- Taxon
- maize–wheat
Triticum aestivum
Zea mayse0 - Outcome
- the application of 10.0 kg Zn ha−1 in alternate yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“the application of 10.0 kg Zn ha−1 in alternate year was found better for obtaining high crop yield and Zn uptake and for maintaining optimum available Zn in maize–wheat cropping system”
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