Abstract
This investigation was conducted at Sids Agricultural Research Station, Bani-Swief Governorates, during two seasons of 2012/2013 and 2013/2014, to evaluate the effect of six nitrogen treatments (60 kg N without starter fertilizer, 60 kg N with starter fertilizer, 90 kg N without starter fertilizer,90 kg N with starter fertilizer, 120 kg N without starter fertilizer and 120 kg N with starter fertilizer) and three application methods (broadcasting, side dressing and top dressing) on vegetative growth characters, yield and yield components as well as quality and storability of onion.The obtained results could be summarized as follow: • The obtained data revealed that plant height, No. of leaves/plant, bulb diameter, bulb length, bulb weight and No. of days to maturity were significantly affected by nitrogen dose in both seasons. • Adding the highest nitrogen dose of 120 kg N with starter fertilizer gave the highest values of plant height, No. of leaves per plant, bulb diameter, plant weight and No. of days to maturity in both seasons. • Adding of nitrogen by top dressing method appeared the largest values in respect to all vegetative growth characters, except for bulb diameter in the first season. • Nitrogen dose significantly affected bulb weight, total yield/fed., marketable yield/fed.and culls yield in both seasons. • The highest values of bulb weight, total yield and marketable yield were obtained under nitrogen dose of 120 kg N with starter fertilizer in both seasons. • Application of nitrogen fertilizer by top dressing methods achieved the maximum values of bulb weight, total yield and marketable yield in both seasons. • Adding of 120 kg N/fed. with starter fertilizer achieved the maximum values of TSS% in both seasons and dry matter % in the second season. • The largest values of TSS% and dry matter % were obtained by adding nitrogen fertilizer by top dressing method in both seasons. • After storing for two months the lowest values of weight loss % were observed under nitrogen dose of 60 kg N/fed. without starter fertilizer, in both seasons. • Application of nitrogen by top dressing appeared the lowest values of weight loss% after storing for 2, 4 and 6 months in both season. • Based on the current experimental results, with regards to the production as well as economic analysis, application of 120 kg N/fed. with starter fertilizer by top dressing method may be suggested for maximizing onion production under similar conditions of this work and further investigations are needed to be conducted in other agro ecological zones of Egypt.
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 15
Claim · model-written summary
Nitrogen dose significantly affected onion growth and maturity traits in both seasons.
- Taxon
- ONION
Allium cepat0 - Treatment
- nitrogen dosee0
- Outcome
- plant height, No. of leaves/plant, bulb diametere0
- Qualifier
- in both seasonse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, No. of leaves/plant, bulb diameter, bulb length, bulb weight and No. of days to maturity were significantly affected by nitrogen dose in both seasons.”
t0“ONION”
Claim · model-written summary
Nitrogen dose significantly affected onion bulb length, weight and days to maturity.
- Taxon
- ONIONAllium cepat0
- Treatment
- nitrogen dosee0
- Outcome
- bulb length, bulb weight and No. of days to maturitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, No. of leaves/plant, bulb diameter, bulb length, bulb weight and No. of days to maturity were significantly affected by nitrogen dose in both seasons.”
t0“ONION”
Claim · model-written summary
120 kg N with starter fertilizer gave the highest onion plant height, leaf number and bulb diameter.
- Taxon
- ONIONAllium cepat0
- Treatment
- 120 kg N with starter fertilizere0
- Outcome
- plant height, No. of leaves per plant, bulb diametere0
- Direction
- higheste0
- Qualifier
- in both seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding the highest nitrogen dose of 120 kg N with starter fertilizer gave the highest values of plant height, No. of leaves per plant, bulb diameter, plant weight and No. of days to maturity in both seasons.”
t0“ONION”
Claim · model-written summary
120 kg N with starter fertilizer gave the highest onion plant weight and days to maturity.
- Taxon
- ONIONAllium cepat0
- Treatment
- 120 kg N with starter fertilizere0
- Outcome
- plant weight and No. of days to maturitye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding the highest nitrogen dose of 120 kg N with starter fertilizer gave the highest values of plant height, No. of leaves per plant, bulb diameter, plant weight and No. of days to maturity in both seasons.”
t0“ONION”
Claim · model-written summary
Top dressing gave the largest vegetative growth values except bulb diameter in the first season.
- Taxon
- ONIONAllium cepat0
- Treatment
- top dressing methode0
- Outcome
- vegetative growth characterse0
- Direction
- largeste0
- Qualifier
- except for bulb diameter in the first seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“top dressing method appeared the largest values in respect to all vegetative growth characters, except for bulb diameter in the first season.”
t0“ONION”
Claim · model-written summary
Nitrogen dose significantly affected onion bulb weight and total and marketable yields.
- Taxon
- ONIONAllium cepat0
- Treatment
- Nitrogen dosee0
- Outcome
- bulb weight, total yield/fed., marketable yield/fed.e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen dose significantly affected bulb weight, total yield/fed., marketable yield/fed.and culls yield in both seasons.”
t0“ONION”
Claim · model-written summary
Nitrogen dose significantly affected onion culls yield.
- Taxon
- ONIONAllium cepat0
- Treatment
- Nitrogen dosee0
- Outcome
- culls yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen dose significantly affected bulb weight, total yield/fed., marketable yield/fed.and culls yield in both seasons.”
t0“ONION”
Claim · model-written summary
120 kg N with starter fertilizer gave the highest onion bulb weight, total yield and marketable yield.
- Taxon
- ONIONAllium cepat0
- Treatment
- 120 kg N with starter fertilizere0
- Outcome
- bulb weight, total yield and marketable yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of bulb weight, total yield and marketable yield were obtained under nitrogen dose of 120 kg N with starter fertilizer in both seasons.”
t0“ONION”
Claim · model-written summary
Top dressing gave maximum onion bulb weight, total yield and marketable yield.
- Taxon
- ONIONAllium cepat0
- Treatment
- top dressing methodse0
- Outcome
- bulb weight, total yield and marketable yielde0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen fertilizer by top dressing methods achieved the maximum values of bulb weight, total yield and marketable yield in both seasons.”
t0“ONION”
Claim · model-written summary
120 kg N per feddan with starter fertilizer maximized onion TSS in both seasons.
- Taxon
- ONIONAllium cepat0
- Treatment
- 120 kg N/fed. with starter fertilizere0
- Outcome
- TSS%e0
- Direction
- maximume0
- Qualifier
- in both seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding of 120 kg N/fed. with starter fertilizer achieved the maximum values of TSS% in both seasons and dry matter % in the second season.”
t0“ONION”
Claim · model-written summary
120 kg N per feddan with starter fertilizer maximized onion dry matter in the second season.
- Taxon
- ONIONAllium cepat0
- Treatment
- 120 kg N/fed. with starter fertilizere0
- Outcome
- dry matter %e0
- Direction
- maximume0
- Qualifier
- in the second seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adding of 120 kg N/fed. with starter fertilizer achieved the maximum values of TSS% in both seasons and dry matter % in the second season.”
t0“ONION”
Claim · model-written summary
Top dressing produced the largest onion TSS and dry matter values.
- Taxon
- ONIONAllium cepat0
- Treatment
- top dressing methode0
- Outcome
- TSS% and dry matter %e0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest values of TSS% and dry matter % were obtained by adding nitrogen fertilizer by top dressing method in both seasons.”
t0“ONION”
Claim · model-written summary
60 kg N per feddan without starter fertilizer gave the lowest weight loss after two months storage.
- Taxon
- ONIONAllium cepat0
- Treatment
- 60 kg N/fed. without starter fertilizere0
- Outcome
- weight loss %e0
- Direction
- loweste0
- Qualifier
- After storing for two monthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After storing for two months the lowest values of weight loss % were observed under nitrogen dose of 60 kg N/fed. without starter fertilizer, in both seasons.”
t0“ONION”
Claim · model-written summary
Top dressing gave the lowest onion weight loss after two, four and six months storage.
- Taxon
- ONIONAllium cepat0
- Treatment
- top dressinge0
- Outcome
- weight loss%e0
- Direction
- loweste0
- Qualifier
- after storing for 2, 4 and 6 monthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen by top dressing appeared the lowest values of weight loss% after storing for 2, 4 and 6 months in both season.”
t0“ONION”
Claim · model-written summary
Authors recommend 120 kg N per feddan with starter fertilizer by top dressing for onion production.
- Taxon
- ONIONAllium cepat0
- Outcome
- application of 120 kg N/fed. with starter fertilizer by top dressing methode0
- Qualifier
- under similar conditions of this worke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of 120 kg N/fed. with starter fertilizer by top dressing method may be suggested for maximizing onion production under similar conditions of this work”
t0“ONION”
The same questions in other papers
fertilization · quality: sugar starch · Allium cepa (onion)Results differ
35 papers in the same direction as this paper · 8 in the opposite direction
- positive
- no effect
- no effect
40 papers more in this group
See all 44 papers →nitrogen · growth · Allium cepa (onion)Results differ
70 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
77 papers more in this group
See all 81 papers →nitrogen · quality: sugar starch · Allium cepa (onion)Positive and negative results
9 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
9 papers more in this group
See all 13 papers →nitrogen · quality: postharvest · Allium cepa (onion)Positive and negative results
35 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
37 papers more in this group
See all 41 papers →fertilization · quality: postharvest · Allium cepa (onion)Positive and negative results
52 papers in the same direction as this paper · 15 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
65 papers more in this group
See all 69 papers →fertilization · growth · Allium cepa (onion)Positive and negative results
250 papers in the same direction as this paper · 40 in the opposite direction · 3 reporting no difference from an alternative
- positive
- no effect
- no effect
290 papers more in this group
See all 294 papers →fertilization · yield · Allium cepa (onion)Positive and negative results
463 papers in the same direction as this paper · 59 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- positive
526 papers more in this group
See all 530 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.