Abstract
Abstract To avoid toxicity resulting in reduced crop yields and/or phytotoxic symptoms on the foliage, information on the residual effect of micronutrient fertilization after periods of application is desirable. This article includes discussion on the micronutrients copper (Cu) and zinc (Zn), because they are essential and are of concern from plant and animal standpoints. In general, no detrimental effects in yield reduction or phytotoxicity were noted from Cu applications of up to 50 kg Cu ha−1 to barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.). Barley was an exception where 50 kg Cu ha−1 decreased yield by about 12% in the first‐year crop. The Cu levels in plants did not exceed 9 mg kg−1. Studies showed that Zn applications of 50 kg ha−1 for 2 years in succession and the resulting crop tissue Zn levels as high as 105 mg kg−1 did not cause any phytotoxicity in cereals. The results of this study suggest that cereals can tolerate high levels of Cu and Zn.
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Claims 5
Claim · model-written summary
Cu applications of up to 50 kg Cu ha−1 caused no detrimental effects in yield reduction or phytotoxicity in barley.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- Cu applications of up to 50 kg Cu ha−1e1
- Outcome
- yield reduction or phytotoxicitye1
- Direction
- no detrimental effectse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“no detrimental effects in yield reduction or phytotoxicity were noted from Cu applications of up to 50 kg Cu ha−1 to barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.)”
Claim · model-written summary
Cu applications of up to 50 kg Cu ha−1 caused no detrimental effects in yield reduction or phytotoxicity in wheat.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- Cu applications of up to 50 kg Cu ha−1e1
- Outcome
- yield reduction or phytotoxicitye1
- Direction
- no detrimental effectse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“no detrimental effects in yield reduction or phytotoxicity were noted from Cu applications of up to 50 kg Cu ha−1 to barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.)”
Claim · model-written summary
In barley, 50 kg Cu ha−1 decreased yield by about 12% in the first crop.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Barley was an exception where 50 kg Cu ha−1 decreased yield by about 12%”
Claim · model-written summary
Cu levels in cereal plants did not exceed 9 mg kg−1.
Verbatim
e3“The Cu levels in plants did not exceed 9 mg kg−1”
e5“cereals can tolerate high levels of Cu and Zn”
Claim · model-written summary
Zn applications of 50 kg ha−1 for 2 years in succession did not cause any phytotoxicity in cereals, with crop tissue Zn levels as high as 105 mg kg−1.
- Taxon
- cerealse4
- Treatment
- Zn applications of 50 kg ha−1 for 2 years in successione4
- Outcome
- phytotoxicitye4
- Direction
- did not cause anye4
- Value
- 105 mg kg−1e4
- Qualifier
- crop tissue Zn levelse4
Not reportedComparator
Verbatim
e4“Studies showed that Zn applications of 50 kg ha−1 for 2 years in succession and the resulting crop tissue Zn levels as high as 105 mg kg−1 did not cause any phytotoxicity in cereals”
The same questions in other papers
copper atom · yield · Hordeum vulgare (barley)Results differ
2 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →copper atom · crop injury · Hordeum vulgare (barley)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
copper atom · crop injury · 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.