Abstract
Abstract Fertilizers varying in level of H 2 O‐soluble Zn were prepared by combining fine ZnO and ZnSO 4 in various proportions and pressure‐granulating the powders with ammonium nitrate, monoammonium phosphate, or ammonium polyphosphate. Forage yields and uptake of Zn by corn ( Zea mays L.) grown on a P‐ and Zn‐deficient soil in the greenhouse increased with the level of H 2 O‐soluble Zn in these macronutrient fertilizers. Additional crop response was slight to fertilizers with levels of H 2 O‐soluble Zn in excess of about 50% but this varied, depending upon the macronutrient carriers. However, the amounts of Zn extracted after cropping from untreated soils and soils initially receiving 12 mg of Zn per 3 kg of soil in a highly H 2 O‐soluble form were comparable. In a second experiment differential response of several corn hybrids to amount of P and Zn and level of Zn solubility in the fertilizers suggests that the test variety might influence the interpretation of the results from fertilizer evaluation studies. No relationship was found between P/Zn ratios in the corn forage and the seed. The P/Zn ratios in corn forage were not related to the response of corn to applied Zn.
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Claims 7
Claim · model-written summary
Corn forage yield increased with fertilizer water-soluble zinc level.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- level of H 2 O‐soluble Zne0
- Outcome
- Forage yieldse0
- Direction
- increasede0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields and uptake of Zn by corn ( Zea mays L.) grown on a P‐ and Zn‐deficient soil in the greenhouse increased with the level of H 2 O‐soluble Zn in these macronutrient fertilizers.”
Claim · model-written summary
Corn zinc uptake increased with fertilizer water-soluble zinc level.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- level of H 2 O‐soluble Zne0
- Outcome
- uptake of Zne0
- Direction
- increasede0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields and uptake of Zn by corn ( Zea mays L.) grown on a P‐ and Zn‐deficient soil in the greenhouse increased with the level of H 2 O‐soluble Zn in these macronutrient fertilizers.”
Claim · model-written summary
Additional crop response above about 50% soluble zinc was slight and varied by macronutrient carrier.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- Additional crop responsee0
- Direction
- slighte0
- Value
- about 50%e0
- Qualifier
- depending upon the macronutrient carrierse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional crop response was slight to fertilizers with levels of H 2 O‐soluble Zn in excess of about 50% but this varied, depending upon the macronutrient carriers.”
t0“Corn”
Claim · model-written summary
Postcrop extractable zinc was comparable between untreated and zinc-treated soils.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- amounts of Zn extracted after croppinge0
- Direction
- comparablee0
- Value
- 12 mg of Zn per 3 kg of soile0
- Comparator
- untreated soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amounts of Zn extracted after cropping from untreated soils and soils initially receiving 12 mg of Zn per 3 kg of soil in a highly H 2 O‐soluble form were comparable”
t0“Corn”
Claim · model-written summary
Corn hybrids responded differently to phosphorus, zinc amount and zinc solubility in fertilizer.
- Taxon
- cornZea mays subsp. mayse0
- Material
- corn hybridse0
- Treatment
- amount of P and Zn and level of Zn solubilitye0
- Outcome
- differential responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differential response of several corn hybrids to amount of P and Zn and level of Zn solubility in the fertilizers”
Claim · model-written summary
No relationship was found between forage and seed P/Zn ratios.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- seede0
- Outcome
- P/Zn ratios in the corn foragee0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No relationship was found between P/Zn ratios in the corn forage and the seed.”
Claim · model-written summary
Forage P/Zn ratios were unrelated to corn response to applied zinc.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- corn foragee0
- Outcome
- response of corn to applied Zne0
- Direction
- no_changeinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The P/Zn ratios in corn forage were not related to the response of corn to applied Zn.”
The same questions in other papers
zinc atom · nutrient: content · Zea mays (maize)Results differ
198 papers in the same direction as this paper · 33 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
231 papers more in this group
See all 235 papers →zinc atom · yield · Zea mays (maize)Results differ
390 papers in the same direction as this paper · 47 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- no effect
437 papers more in this group
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.