Abstract
To investigate the effect of potassium source and rate on soil K, growth and K uptake of spinach, a pots experiment was carried out during the winter season of 2020 at the greenhouse of the Faculty of Agriculture, Saba Basha, Alexandria, Egypt. The experiment was laid out in randomized complete block design (RCBD) with three replications. The treatments included applying 50% of recommended K in the form of potassium sulfate (PS50), 100% as potassium sulfate (PS100), 50% as potassium citrate (PC50), 100% as potassium citrate (PC100), 50% as potassium humate (PH50), 100% as potassium humate (PH100) and control (0% K). The obtained results showed that the application of potassium in the forms of potassium humate and potassium citrate improved spinach growth and K uptake compared to potassium sulfate. The application of potassium humate can minimize the potassium application rate and reduce the fertilizer requirements without significant influences on plant growth and potassium uptake.
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Claims 5
Claim · model-written summary
Potassium humate improved spinach growth relative to potassium sulfate.
- Taxon
- Spinach
Spinacia oleraceat0 - Treatment
- potassium humatee0
- Outcome
- spinach growthe0
- Direction
- improvede0
- Comparator
- potassium sulfatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spinach”
e0“application of potassium in the forms of potassium humate and potassium citrate improved spinach growth and K uptake compared to potassium sulfate”
Claim · model-written summary
Potassium citrate improved spinach growth relative to potassium sulfate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- potassium citratee0
- Outcome
- spinach growthe0
- Direction
- improvede0
- Comparator
- potassium sulfatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spinach”
e0“application of potassium in the forms of potassium humate and potassium citrate improved spinach growth and K uptake compared to potassium sulfate”
Claim · model-written summary
Potassium humate improved spinach K uptake relative to potassium sulfate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- potassium humatee0
- Outcome
- K uptakee0
- Direction
- improvede0
- Comparator
- potassium sulfatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spinach”
e0“application of potassium in the forms of potassium humate and potassium citrate improved spinach growth and K uptake compared to potassium sulfate”
Claim · model-written summary
Potassium citrate improved spinach K uptake relative to potassium sulfate.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- potassium citratee0
- Outcome
- K uptakee0
- Direction
- improvede0
- Comparator
- potassium sulfatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spinach”
e0“application of potassium in the forms of potassium humate and potassium citrate improved spinach growth and K uptake compared to potassium sulfate”
Claim · model-written summary
Potassium humate can reduce application rate and fertilizer requirements without significant effects on spinach growth and uptake.
- Taxon
- SpinachSpinacia oleraceat0
- Treatment
- potassium humatee0
- Outcome
- minimize the potassium application rate and reduce the fertilizer requirementse0
- Qualifier
- without significant influences on plant growth and potassium uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spinach”
e0“The application of potassium humate can minimize the potassium application rate and reduce the fertilizer requirements without significant influences on plant growth and potassium uptake.”
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potassium · nutrient: content · Spinacia oleracea (spinach)Positive and negative results
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7 papers in the same direction as this paper · 4 in the opposite direction
- no effect
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See all 12 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.