Abstract
For investigating the effect of chemical fertilizer as well as biofertilizers on seed yield and quality i.e. oil, protein and nutrients concentration of rapeseed (Brassica napus L.), a split-plot fertilizers application experimental design in 4 replications was carried out during the 2005-2006 growing season, at the Gharakheil Agricultural Research Station in the Mazandaran province of Iran. Rapeseed was grown as a second crop in rotation after rice. Biofertilizers treatments were two different levels: control (no seed inoculation) and seeds inoculation with a combination of Azotobacter chroococcum and Azosprillum brasilense and Azosprillum lipoferum, as main plot and chemical fertilizers comprised N, P, K and their combinations, NPKS and NPK Zn as sub plots. The maximum value of seed yield obtained at (BF+NPK Zn) 3421.2 kg h(-1) corresponding to 244.5 pods per plant and maximum concentration of Zn in leaves as well as seeds. The highest weight of 1000 seeds (4.45 g) happened to obtain at (BF+NPK S) which coinciding with the maximum K levels in leaves. The highest number of branches was obtained at (BF+NPK Zn) with 4.43 branches per plant i.e., 46.2% increase over the control. The maximum value of rapeseed oil content 47.73% obtained at T16 (BF+NK) but maximum protein concentration of seed obtained at T12 (BF+N). Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments. Irrespective to the treatments, results showed that application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments.
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 20
Claim · model-written summary
BF+NPK Zn produced the maximum seed yield of 3421.2 kg h(-1).
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Zne0
- Outcome
- seed yielde0
- Direction
- maximume0
- Value
- 3421.2 kg h(-1)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The maximum value of seed yield obtained at (BF+NPK Zn) 3421.2 kg h(-1)”
Claim · model-written summary
BF+NPK Zn corresponded to 244.5 pods per plant.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Zne0
- Outcome
- pods per plante0
- Value
- 244.5 pods per plante0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The maximum value of seed yield obtained at (BF+NPK Zn) 3421.2 kg h(-1) corresponding to 244.5 pods per plant”
Claim · model-written summary
BF+NPK Zn produced maximum Zn concentration in leaves and seeds.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Zne0
- Outcome
- concentration of Zn in leaves as well as seedse0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The maximum value of seed yield obtained at (BF+NPK Zn) 3421.2 kg h(-1) corresponding to 244.5 pods per plant and maximum concentration of Zn in leaves as well as seeds”
Claim · model-written summary
BF+NPK S produced the highest 1000-seed weight of 4.45 g.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Se0
- Outcome
- weight of 1000 seedse0
- Direction
- higheste0
- Value
- 4.45 ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The highest weight of 1000 seeds (4.45 g) happened to obtain at (BF+NPK S)”
Claim · model-written summary
BF+NPK S coincided with maximum leaf K levels.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Se0
- Outcome
- K levels in leavese0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The highest weight of 1000 seeds (4.45 g) happened to obtain at (BF+NPK S) which coinciding with the maximum K levels in leaves”
Claim · model-written summary
BF+NPK Zn gave the highest branch number, 4.43 per plant, 46.2% above control.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NPK Zne0
- Outcome
- number of branchese0
- Direction
- increasee0
- Value
- 46.2%e0
- Qualifier
- 4.43 branches per plante0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The highest number of branches was obtained at (BF+NPK Zn) with 4.43 branches per plant i.e., 46.2% increase over the control”
Claim · model-written summary
BF+NK gave maximum oil content of 47.73%.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+NKe0
- Outcome
- rapeseed oil contente0
- Direction
- maximume0
- Value
- 47.73%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“The maximum value of rapeseed oil content 47.73% obtained at T16 (BF+NK)”
Claim · model-written summary
BF+N gave maximum seed protein concentration.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- BF+Ne0
- Outcome
- protein concentration of seede0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“maximum protein concentration of seed obtained at T12 (BF+N)”
Claim · model-written summary
Inoculation changed seeds yield by 21.17% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- seeds yielde0
- Direction
- increasee0
- Value
- 21.17%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed number of pods per plant by 16.05% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- number of pods per plante0
- Direction
- increasee0
- Value
- 16.05%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed number of branches by 11.78% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- number of branchese0
- Direction
- increasee0
- Value
- 11.78%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed weight of 1000 grain by 2.92% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- weight of 1000 graine0
- Direction
- increasee0
- Value
- 2.92%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed oil content of seeds by 1.73% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- oil content of seedse0
- Direction
- increasee0
- Value
- 1.73%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed protein by 3.91% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- proteine0
- Direction
- increasee0
- Value
- 3.91%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Inoculation changed number of seeds per pods by -0.24% relative to non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- inoculatione0
- Outcome
- number of seeds per podse0
- Direction
- decreasee0
- Value
- -0.24%e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“Overall the results indicated that inoculation resulted in increase in seeds yield (21.17%), number of pods per plant (16.05%), number of branches (11.78%), weight of 1000 grain (2.92%), oil content of seeds (1.73%) and protein (3.91%) but decrease (-0.24%) in number of seeds per pods comparing to non-Biofertilizers treatments”
Claim · model-written summary
Biofertilizers increased seed N concentration by 3.86% over non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- Biofertilizerse0
- Outcome
- Ne0
- Direction
- increasee0
- Value
- 3.86e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments”
Claim · model-written summary
Biofertilizers increased seed P concentration by 0.82% over non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- Biofertilizerse0
- Outcome
- Pe0
- Direction
- increasee0
- Value
- 0.82e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments”
Claim · model-written summary
Biofertilizers increased seed K concentration by 2.25% over non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- Biofertilizerse0
- Outcome
- Ke0
- Direction
- increasee0
- Value
- 2.25e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments”
Claim · model-written summary
Biofertilizers increased seed S concentration by 0.75% over non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- Biofertilizerse0
- Outcome
- Se0
- Direction
- increasee0
- Value
- 0.75e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments”
Claim · model-written summary
Biofertilizers increased seed Zn concentration by 0.91% over non-Biofertilizers treatments.
- Taxon
- Rapeseed (Brassica napus L.)
Brassica napust0 - Treatment
- Biofertilizerse0
- Outcome
- Zne0
- Direction
- increasee0
- Value
- 0.91e0
- Comparator
- non-Biofertilizers treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Rapeseed (Brassica napus L.)”
e0“application of Biofertilizers coincided with 3.86, 0.82, 2.25, 0.75 and 0.91% increase in concentrations of N, P, K, S and Zn in the seeds over the non-Biofertilizers treatments”
The same questions in other papers
zinc atom · yield · Brassica napus (oilseed rape)Results differ
34 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
35 papers more in this group
See all 39 papers →zinc atom · molecular: metabolites · Brassica napus (oilseed rape)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
3 papers more in this group
See all 7 papers →inoculation · quality: protein · Brassica napus (oilseed rape)Positive and negative results
1 in the opposite direction
- negative
inoculation · quality: oil · Brassica napus (oilseed rape)Positive and negative results
12 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
10 papers more in this group
See all 14 papers →fertilization · molecular: metabolites · Brassica napus (oilseed rape)Positive and negative results
24 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- negative
26 papers more in this group
See all 30 papers →inoculation · nutrient: content · Brassica napus (oilseed rape)Positive and negative results
30 papers in the same direction as this paper · 4 in the opposite direction
- positive
- no effect
- negative
31 papers more in this group
See all 35 papers →inoculation · yield · Brassica napus (oilseed rape)Positive and negative results
43 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- negative
43 papers more in this group
See all 47 papers →fertilization · nutrient: content · Brassica napus (oilseed rape)Positive and negative results
94 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
105 papers more in this group
See all 109 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.