Abstract
A pot culture experiment was conducted at the College of Horticulture, Kerala Agricultural University, India, to study the effect of potassium- magnesium interaction in plants using okra (Abelmoschus esculentus Moench) as the test crop. The experiment was conducted on an alluvial soil, sandy clay in texture, acidic (pH- 4.9), high in organic carbon, and medium in available phosphorus (P) and potassium (K). The treatments included factorial combinations of four levels of potassium from K0 to K3 (0, 15, 30 and 45 kg K2O ha-1 as muriate of potash) and four levels of magnesium (Mg) from Mg0 to Mg3 (0, 10, 20 and 30 kg MgO ha-1). At all K levels, combined with Mg application at 10 kgha-1, an increase was observed in dry matter production but at higher levels of Mg a decrease occured. Increasing the level of K from K0 to K3 in the presence of low levels of Mg caused a progressive increase in the yield while at higher Mg levels increasing K reduced the yield. Increased addition of K without Mg significantly increased the crude protein contents. Application of Mg generally decreased the crude protein content of harvested fruits. Increasing the rate of K application also progressively and significantly decreased the crude fibre. The magnitude of decrease was increased in the presence of Mg. At all levels of Mg, as the K application rates increased, the ascorbic acid content also showed a significant increase.Addition of Mg caused a significant increase in the nitrogen (N) uptake at each level of K though the magnitude of increase diminished as levels of Mg increased. The application of high rates of Mg decreases the favorable effect of K on P uptake and hence Mg is seen to have an antagonistic effect on P uptake. A positive interaction existed between K and Mg on the uptake of K. At higher levels of K, a significant increase in K uptake was noticed as Mg levels were increased. Calcium (Ca) uptake was significantly reduced with increasing K levels especially in the absence of Mg. Though K application up to K2 caused a non significant increase in Mg uptake, further increase to K3 reduced the uptake. In the presence of a particular level of Mg, increasing the K levels did not bring about a significant variation in the sulphur uptake by the plant.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 17
Claim · model-written summary
Mg at 10 kg per ha combined with K increased okra dry matter production at all K levels.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentuse0 - Treatment
- Mg application at 10 kgha-1e1
- Outcome
- dry matter productione1
- Direction
- an increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“At all K levels, combined with Mg application at 10 kgha-1, an increase was observed in dry matter production”
Claim · model-written summary
Higher Mg levels decreased okra dry matter production.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- higher levels of Mge2
- Outcome
- dry matter productione1
- Direction
- a decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“At all K levels, combined with Mg application at 10 kgha-1, an increase was observed in dry matter production”
e2“but at higher levels of Mg a decrease occured”
Claim · model-written summary
Increasing K from K0 to K3 at low Mg caused a progressive increase in okra yield.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Increasing the level of K from K0 to K3e3
- Outcome
- yielde3
- Direction
- progressive increasee3
- Qualifier
- in the presence of low levels of Mge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e3“Increasing the level of K from K0 to K3 in the presence of low levels of Mg caused a progressive increase in the yield”
Claim · model-written summary
At higher Mg levels, increasing K reduced okra yield.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- increasing Ke4
- Outcome
- the yielde4
- Direction
- reducede4
- Qualifier
- at higher Mg levelse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e4“while at higher Mg levels increasing K reduced the yield”
Claim · model-written summary
K without Mg significantly increased okra crude protein content.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Increased addition of K without Mge5
- Outcome
- crude protein contentse5
- Direction
- significantly increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e5“Increased addition of K without Mg significantly increased the crude protein contents”
Claim · model-written summary
Mg application generally decreased crude protein content of harvested okra fruits.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Application of Mge6
- Outcome
- crude protein content of harvested fruitse6
- Direction
- generally decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e6“Application of Mg generally decreased the crude protein content of harvested fruits”
Claim · model-written summary
Increasing K application progressively and significantly decreased okra crude fibre.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Increasing the rate of K applicatione7
- Outcome
- crude fibree7
- Direction
- progressively and significantly decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e7“Increasing the rate of K application also progressively and significantly decreased the crude fibre”
Claim · model-written summary
The magnitude of crude fibre decrease was greater in the presence of Mg.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- in the presence of Mge1
- Outcome
- magnitude of decreasee1
- Direction
- was increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“The magnitude of decrease was increased in the presence of Mg”
Claim · model-written summary
Ascorbic acid content of okra fruit increased significantly with K application rates at all Mg levels.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- K application ratese1
- Outcome
- ascorbic acid contente1
- Direction
- a significant increasee1
- Qualifier
- At all levels of Mge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“At all levels of Mg, as the K application rates increased, the ascorbic acid content also showed a significant increase”
Claim · model-written summary
Mg addition significantly increased okra nitrogen uptake at each K level, with the increase diminishing at higher Mg.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Addition of Mge1
- Outcome
- nitrogen (N) uptakee1
- Direction
- a significant increasee1
- Qualifier
- though the magnitude of increase diminished as levels of Mg increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“Addition of Mg caused a significant increase in the nitrogen (N) uptake at each level of K though the magnitude of increase diminished as levels of Mg increased”
Claim · model-written summary
High Mg rates decreased the favourable effect of K on okra P uptake, an antagonistic effect of Mg on P uptake.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- high rates of Mge1
- Outcome
- P uptakee1
- Direction
- decreasese1
- Qualifier
- antagonistic effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“The application of high rates of Mg decreases the favorable effect of K on P uptake and hence Mg is seen to have an antagonistic effect on P uptake”
Claim · model-written summary
K and Mg interact positively on K uptake in okra.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- K and Mge1
- Outcome
- uptake of Ke1
- Direction
- positive interactione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“A positive interaction existed between K and Mg on the uptake of K”
Claim · model-written summary
At higher K levels, K uptake increased significantly as Mg levels increased.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- Mg levels were increasede1
- Outcome
- K uptakee1
- Direction
- a significant increasee1
- Qualifier
- At higher levels of Ke1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“At higher levels of K, a significant increase in K uptake was noticed as Mg levels were increased”
Claim · model-written summary
Calcium uptake by okra was significantly reduced with increasing K, especially without Mg.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- increasing K levelse1
- Outcome
- Calcium (Ca) uptakee1
- Direction
- significantly reducede1
- Qualifier
- especially in the absence of Mge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“Calcium (Ca) uptake was significantly reduced with increasing K levels especially in the absence of Mg”
Claim · model-written summary
K application up to K2 caused a non-significant increase in okra Mg uptake.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- K application up to K2e1
- Outcome
- Mg uptakee1
- Direction
- a non significant increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“Though K application up to K2 caused a non significant increase in Mg uptake, further increase to K3 reduced the uptake”
Claim · model-written summary
Increasing K from K2 to K3 reduced okra Mg uptake.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- further increase to K3e1
- Outcome
- Mg uptakee1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“Though K application up to K2 caused a non significant increase in Mg uptake, further increase to K3 reduced the uptake”
Claim · model-written summary
At a given Mg level, increasing K did not significantly change okra sulphur uptake.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- increasing the K levelse1
- Outcome
- sulphur uptakee1
- Direction
- did not bring about a significant variatione1
- Qualifier
- In the presence of a particular level of Mge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using okra (Abelmoschus esculentus Moench) as the test crop”
e1“In the presence of a particular level of Mg, increasing the K levels did not bring about a significant variation in the sulphur uptake by the plant”
The same questions in other papers
magnesium atom · yield · Abelmoschus esculentus (okra)Results agree
1 paper in the same direction as this paper
- positive
potassium · nutrient: content · Abelmoschus esculentus (okra)Positive and negative results
1 in the opposite direction
- positive
potassium · quality: phytochemicals · Abelmoschus esculentus (okra)Results agree
1 paper in the same direction as this paper
- positive
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.