Abstract
Agronomic approaches for increasing food crop yield and quality are crucial for boosting food security due to the depletion of terrestrial resources and the rising worldwide demand for food. As a consequence, the current study looks at ways to improve several essential components of existing onion production technique in Egypt by using two types of potassium fertilizer, KCl and K2SO4, either alone or in combination, as well as two different planting methods, seeding and seedling transplantation. The research focused on the performance of onion cv. Giza 9 through vegetative growth, bulbification (bulbing ratio), dry bulb yield and bulb quality during the successive winter seasons of 2019/2020 and 2020/2021. The obtained results demonstrated that direct seeding of onion produced higher plant growth, bulb yield, and quality than seedling transplantation. Compared to potassium combinations involving chloride, potassium fertilization of onion in the form of K2SO4 produced the best plant growth, bulb production, and their quality. As chloride levels in fertilizer compounds rise, onion plant growth and yield potential decline. On the other hand, chloride had a less negative impact when onion was grown from seeds rather than seedlings. Also, direct seed sowing and fertilization interactions with either pure K2SO4 or a mixture of 75% K2SO4 and 25% KCl resulted in the highest dry bulb yield measurements. Interestingly, supplying the onion plants with KCl fertilizer up to 25% of their potassium requirements without causing a significant decline in plant growth or bulb yield when planting onions by direct seeds but not to seedlings.
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Claims 8
Claim · model-written summary
Direct seeding gave higher growth, bulb yield and quality than transplanting.
- Taxon
- onion
Allium cepae0 - Treatment
- direct seedinge0
- Outcome
- plant growth, bulb yield, and qualitye0
- Direction
- highere0
- Comparator
- seedling transplantatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct seeding of onion produced higher plant growth, bulb yield, and quality than seedling transplantation”
Claim · model-written summary
K2SO4 gave the best growth, bulb production and quality relative to chloride combinations.
- Taxon
- onionAllium cepae0
- Treatment
- K2SO4e0
- Outcome
- plant growth, bulb production, and their qualitye0
- Direction
- beste0
- Comparator
- potassium combinations involving chloridee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to potassium combinations involving chloride, potassium fertilization of onion in the form of K2SO4 produced the best plant growth, bulb production, and their quality”
Claim · model-written summary
Growth and yield potential declined with increasing fertilizer chloride.
- Taxon
- onionAllium cepae0
- Treatment
- chloride levels in fertilizer compoundse0
- Outcome
- plant growth and yield potentiale0
- Direction
- declinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As chloride levels in fertilizer compounds rise, onion plant growth and yield potential decline”
Claim · model-written summary
Chloride was less harmful to seed-grown than transplanted onion.
- Taxon
- onionAllium cepae0
- Treatment
- chloridee0
- Outcome
- negative impacte0
- Direction
- less negativee0
- Comparator
- seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chloride had a less negative impact when onion was grown from seeds rather than seedlings”
Claim · model-written summary
Direct sowing with pure K2SO4 gave the highest dry bulb yield.
- Taxon
- onionAllium cepae1
- Treatment
- direct seed sowing and fertilization interactions with either pure K2SO4e0
- Outcome
- dry bulb yield measurementse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct seed sowing and fertilization interactions with either pure K2SO4 or a mixture of 75% K2SO4 and 25% KCl resulted in the highest dry bulb yield measurements”
e1“onion plants”
Claim · model-written summary
Direct sowing with 75% K2SO4 and 25% KCl gave the highest dry bulb yield.
- Taxon
- onionAllium cepae1
- Treatment
- a mixture of 75% K2SO4 and 25% KCle0
- Outcome
- dry bulb yield measurementse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct seed sowing and fertilization interactions with either pure K2SO4 or a mixture of 75% K2SO4 and 25% KCl resulted in the highest dry bulb yield measurements”
e1“onion plants”
Claim · model-written summary
Up to 25% KCl caused no significant growth or yield decline under direct seeding.
- Taxon
- onionAllium cepae0
- Treatment
- KCl fertilizer up to 25% of their potassium requirementse0
- Outcome
- plant growth or bulb yielde0
- Direction
- without causing a significant declinee0
- Qualifier
- when planting onions by direct seedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplying the onion plants with KCl fertilizer up to 25% of their potassium requirements without causing a significant decline in plant growth or bulb yield when planting onions by direct seeds”
Claim · model-written summary
The no-decline result for 25% KCl did not apply to transplanted onions.
- Taxon
- onionAllium cepae0
- Treatment
- KCl fertilizer up to 25% of their potassium requirementse0
- Outcome
- plant growth or bulb yielde0
- Qualifier
- seedlingse0
- Comparator
- direct seedse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplying the onion plants with KCl fertilizer up to 25% of their potassium requirements without causing a significant decline in plant growth or bulb yield when planting onions by direct seeds but not to seedlings”
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