Abstract
Improving qualitative and quantitative traits of the onion (Allium cepa L.) plant, a strategic crop, is essential to meet increasing agricultural demands and enhance crop quality. The current study, conducted over two successive growing seasons (2022/23 and 2023/24), aimed to investigate the synergistic effects of elemental sulfur, various potassium supplements and methionine amino acid on the growth, yield and quality of onion plants. The experiment was arranged in a split-split plot design, as the main factor was the application of elemental sulfur (applied at a rate of 360 kg ha-1 or non-application). The sub-main factor involved different forms of potassium supplements applied as foliar sprays at rate of 750 mg K2O L-1 [Control (no potassium), potassium silicate (K2SiO3), potassium citrate (K3C6H5O7), potassium nitrate(KNO3)], while the sub-sub main factor included methionine amino acid, either sprayed at 100 mg L-1 or not sprayed. The results show that the application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment) across measured parameters. Potassium silicate emerged as the most effective potassium supplement, followed by potassium citrate then potassium nitrate, and lately the control. Additionally, methionine application enhanced both the growth, yield and quality traits of onions. The combined application of elemental sulfur, potassium silicate, and methionine produced the highest values for growth, yield and quality attributes. Finally, it can be concluded that the usage of elemental sulfur, potassium supplements, particularly potassium silicate, and methionine is so beneficial to enhance the performance of onions. This integrated approach not only maximizes crop yield but also improves the quality of onions, offering a sustainable pathway to augment onion production. Future research should explore the long-term effects of these treatments and their interactions with other agronomic practices to further optimize onion cultivation.
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Claims 10
Claim · model-written summary
Elemental sulfur improved onion fresh and dry weights and leaf area.
- Taxon
- onion
Allium cepae0 - Treatment
- elemental sulfure0
- Outcome
- fresh and dry weights, leaf areae0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment)”
Claim · model-written summary
Elemental sulfur improved onion chlorophyll a and b contents.
- Taxon
- onionAllium cepae0
- Treatment
- elemental sulfure0
- Outcome
- chlorophyll a & b contentse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment)”
Claim · model-written summary
Elemental sulfur improved onion bulb weight and diameter and marketable yield.
- Taxon
- onionAllium cepae0
- Treatment
- elemental sulfure0
- Outcome
- bulb weight and diameter, marketable yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment)”
Claim · model-written summary
Elemental sulfur improved onion total dissolved solids, dry matter and vitamin C.
- Taxon
- onionAllium cepae0
- Treatment
- elemental sulfure0
- Outcome
- total dissolved solids, dry matter, vitamin Ce0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment)”
Claim · model-written summary
Elemental sulfur improved onion anthocyanin pigment.
- Taxon
- onionAllium cepae0
- Treatment
- elemental sulfure0
- Outcome
- anthocyanin pigmente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of elemental sulfur significantly improved onion performance regarding growth, quantitative and qualitative traits (e.g., fresh and dry weights, leaf area, chlorophyll a & b contents, bulb weight and diameter, marketable yield, total dissolved solids, dry matter, vitamin C and anthocyanin pigment)”
Claim · model-written summary
Potassium silicate was the most effective potassium supplement for onion performance.
- Taxon
- OnionAllium cepat0
- Treatment
- Potassium silicatee0
- Outcome
- most effective potassium supplemente0
- Direction
- most effectivee0
- Comparator
- potassium citratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium silicate emerged as the most effective potassium supplement, followed by potassium citrate then potassium nitrate, and lately the control.”
t0“Onion”
Claim · model-written summary
Potassium citrate ranked ahead of potassium nitrate and the control.
- Taxon
- OnionAllium cepat0
- Treatment
- potassium citratee0
- Outcome
- followed by potassium citrate then potassium nitratee0
- Direction
- followed bye0
- Comparator
- potassium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium silicate emerged as the most effective potassium supplement, followed by potassium citrate then potassium nitrate, and lately the control.”
t0“Onion”
Claim · model-written summary
Methionine enhanced onion growth, yield and quality traits.
- Taxon
- onionsAllium cepae0
- Treatment
- methionine applicatione0
- Outcome
- growth, yield and quality traitse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“methionine application enhanced both the growth, yield and quality traits of onions.”
Claim · model-written summary
Combined sulfur, potassium silicate and methionine produced the highest growth, yield and quality attributes.
- Taxon
- OnionAllium cepat0
- Treatment
- combined application of elemental sulfur, potassium silicate, and methioninee0
- Outcome
- growth, yield and quality attributese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combined application of elemental sulfur, potassium silicate, and methionine produced the highest values for growth, yield and quality attributes.”
t0“Onion”
Claim · model-written summary
The authors recommend sulfur, potassium supplements, especially potassium silicate, and methionine for onion production.
- Taxon
- onionsAllium cepae0
- Treatment
- elemental sulfur, potassium supplements, particularly potassium silicate, and methioninee0
- Outcome
- enhance the performance of onionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“usage of elemental sulfur, potassium supplements, particularly potassium silicate, and methionine is so beneficial to enhance the performance of onions”
The same questions in other papers
elemental sulfur · quality: phytochemicals · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
methionine · quality: general · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
elemental sulfur · quality: general · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
silicate(4-) · quality: general · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
potassium · quality: general · Allium cepa (onion)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 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.