Abstract
The current research was conducted to determine the effects of different potassium (K) and iron (Fe) rates on the growth and some macro nutrient uptake of maize. For this purpose, five K (1, 2, 4, 6 and 8 mM) and four Fe (30, 60, 90 and 120 µM) doses were applied to maize (Zea Mays L. cv. BSC 6661) plants in a re-circulated hydroponic system. Increasing K and Fe levels had positive effects on dry weight of the maize leaves and roots. The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose. The addition of increasing levels of K decreased the P, Mg, and Ca concentrations in both leaves and roots of maize. Although the lowest dose of K and Fe has positive effects, the elevated K and Fe doses decreased their uptake in both roots and leaves.
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Claims 12
Claim · model-written summary
Increasing K and Fe increased maize leaves dry weight.
- Organ / stage
- leavese0
- Treatment
- Increasing K and Fe levelse0
- Outcome
- dry weight of the maize leaves and rootse0
- Direction
- positive effectse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Increasing K and Fe levels had positive effects on dry weight of the maize leaves and roots.”
Claim · model-written summary
Increasing K and Fe increased maize roots dry weight.
- Organ / stage
- rootse0
- Treatment
- Increasing K and Fe levelse0
- Outcome
- dry weight of the maize leaves and rootse0
- Direction
- positive effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Increasing K and Fe levels had positive effects on dry weight of the maize leaves and roots.”
Claim · model-written summary
total Fe increased as Fe and K levels rose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
active Fe increased as Fe and K levels rose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
uptake increased as Fe and K levels rose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
total Fe decreased at the highest K dose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
active Fe decreased at the highest K dose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
uptake decreased at the highest K dose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The total Fe and active Fe concentrations and their uptake increased with the increasing levels of Fe and K, but these amounts decreased with the highest K dose.”
Claim · model-written summary
Increasing K decreased P concentration in leaves and roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The addition of increasing levels of K decreased the P, Mg, and Ca concentrations in both leaves and roots of maize.”
Claim · model-written summary
Increasing K decreased Mg concentration in leaves and roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The addition of increasing levels of K decreased the P, Mg, and Ca concentrations in both leaves and roots of maize.”
Claim · model-written summary
Increasing K decreased Ca concentration in leaves and roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The addition of increasing levels of K decreased the P, Mg, and Ca concentrations in both leaves and roots of maize.”
Claim · model-written summary
Elevated K and Fe doses decreased their uptake in roots and leaves.
- Organ / stage
- roots and leavese0
- Treatment
- elevated K and Fe dosese0
- Outcome
- uptakee0
- Direction
- decreasede0
- Comparator
- lowest dose of K and Fee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Although the lowest dose of K and Fe has positive effects, the elevated K and Fe doses decreased their uptake in both roots and leaves.”
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See all 96 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.