Abstract
The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants. The fertilisers were applied as fine powders and mixed through the soil. Both fertilisers were equally effective in the acid soil, but the oxide was about half as effective as the sulfate in the alkaline soil; about twice the amount of zinc as the oxide was required to produce the same yield as zinc added as the sulfate. The amount of zinc required to produce 90% of the maximum yield was 38 µg Zn/pot for both sources of zinc in the acid soil, and 100 µg Zn/pot for the sulfate source and 250 µg Zn/pot for the oxide source for the alkaline soil. Critical zinc, which is the zinc concentration in the youngest emerged leaf that was related to 90% of the maximum yield of shoots, was about 13 mg/kg for both sources of zinc and both soils. Zinc oxide may be less effective at producing wheat shoots than zinc sulfate in alkaline soils of south-western Australia.
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Claims 7
Claim · model-written summary
Zinc sulfate and zinc oxide were equally effective for wheat shoot production in acid soil.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- zinc oxidee0
- Outcome
- producing wheat shootse0
- Direction
- equally effectivee1
- Comparator
- zinc sulfatee0
- Setting
- acid soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e1“Both fertilisers were equally effective in the acid soil, but the oxide was about half as effective as the sulfate in the alkaline soil”
Claim · model-written summary
Zinc oxide was about half as effective as zinc sulfate for wheat shoot production in alkaline soil.
- Taxon
- wheatTriticum aestivume0
- Treatment
- zinc oxidee0
- Outcome
- producing wheat shootse0
- Direction
- about half as effectivee1
- Value
- about halfe1
- Comparator
- zinc sulfatee0
- Setting
- alkaline soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e1“Both fertilisers were equally effective in the acid soil, but the oxide was about half as effective as the sulfate in the alkaline soil”
Claim · model-written summary
About twice the amount of zinc as oxide was required to give the same wheat yield as zinc sulfate.
- Taxon
- wheatTriticum aestivume0
- Outcome
- required to produce the same yielde2
- Value
- about twicee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e2“about twice the amount of zinc as the oxide was required to produce the same yield as zinc added as the sulfate”
Claim · model-written summary
In acid soil, 38 µg Zn/pot of either zinc source gave 90% of maximum wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- both sources of zince3
- Outcome
- The amount of zinc required to produce 90% of the maximum yielde3
- Value
- 38 µg Zn/pote3
- Setting
- acid soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e3“The amount of zinc required to produce 90% of the maximum yield was 38 µg Zn/pot for both sources of zinc in the acid soil, and 100 µg Zn/pot for the sulfate source and 250 µg Zn/pot for the oxide source for the alkaline soil”
Claim · model-written summary
In alkaline soil, 100 µg Zn/pot of zinc sulfate gave 90% of maximum wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- sulfate sourcee3
- Outcome
- The amount of zinc required to produce 90% of the maximum yielde3
- Value
- 100 µg Zn/pote3
- Setting
- alkaline soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e3“The amount of zinc required to produce 90% of the maximum yield was 38 µg Zn/pot for both sources of zinc in the acid soil, and 100 µg Zn/pot for the sulfate source and 250 µg Zn/pot for the oxide source for the alkaline soil”
Claim · model-written summary
In alkaline soil, 250 µg Zn/pot of zinc oxide gave 90% of maximum wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- oxide sourcee3
- Outcome
- The amount of zinc required to produce 90% of the maximum yielde3
- Value
- 250 µg Zn/pote3
- Setting
- alkaline soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e3“The amount of zinc required to produce 90% of the maximum yield was 38 µg Zn/pot for both sources of zinc in the acid soil, and 100 µg Zn/pot for the sulfate source and 250 µg Zn/pot for the oxide source for the alkaline soil”
Claim · model-written summary
Critical leaf zinc for 90% of maximum wheat shoot yield was about 13 mg/kg for both zinc sources and both soils.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- youngest emerged leafe4
- Outcome
- Critical zince4
- Value
- about 13 mg/kge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of zinc, as either zinc sulfate (ZnSO4.7H2O, 22.4% Zn) or zinc oxide (ZnO; 80% Zn) applied to an acid sand or an alkaline sandy clay, at producing wheat shoots was compared in a glasshouse experiment using yield of 50-day-old wheat (Triticum aestivum L.) plants”
e4“Critical zinc, which is the zinc concentration in the youngest emerged leaf that was related to 90% of the maximum yield of shoots, was about 13 mg/kg for both sources of zinc and both soils”
The same questions in other papers
zinc oxide · organism · Triticum aestivum (wheat)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.