Abstract
Pot trials were conducted to study the response of different fraction of B in rape leaves to different B fertilizer application levels in different growth stage and different position, and the possibility of using water extractable B in rape leaves as the diagnostic criterion was discussed.When B application level was higher than 5.1 kg/hm~2, both the biomass of rapes in seedling stage and shooting stage and the grain yield decreased, but the total B content and water extractable B content in leaves increased with the enhance of B application levels. Although there were good relationship between total B contents and B fertilizer application levels, the differences of total B contents among B fertilizer treatments were too narrow to be used as diagnoses;Good relationships was also appeared between water extractable B content in leaves and B fertilizer treatments, and the water extractable B content in both quickly-spreading leaves and well-spread leaves in seedling stage were sensitive to the B nutrient status, thus there was possibility to use water extractable B as the diagnostic criterion of B nutrition of rapes. But further research was needed for the setup of water extractable B level in leaves as the diagnosis criterion.
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Claims 7
Claim · model-written summary
Boron application above 5.1 kg/hm~2 decreased rape biomass in seedling and shooting stages.
- Taxon
- rapes
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Organ / stage
- seedling stage and shooting stagee0
- Treatment
- B application level was higher than 5.1 kg/hm~2e0
- Outcome
- biomass of rapes in seedling stage and shooting stagee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“When B application level was higher than 5.1 kg/hm~2, both the biomass of rapes in seedling stage and shooting stage and the grain yield decreased”
Claim · model-written summary
Boron application above 5.1 kg/hm~2 decreased rape grain yield.
- Taxon
- rapesBrassica napuse0
- Treatment
- B application level was higher than 5.1 kg/hm~2e0
- Outcome
- grain yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When B application level was higher than 5.1 kg/hm~2, both the biomass of rapes in seedling stage and shooting stage and the grain yield decreased”
Claim · model-written summary
Leaf total B content increased with B application level.
- Taxon
- rapeBrassica napust0
- Organ / stage
- leavese0
- Treatment
- B application levelse0
- Outcome
- total B contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total B content and water extractable B content in leaves increased with the enhance of B application levels”
t0“rape leaves”
Claim · model-written summary
Leaf water extractable B content increased with B application level.
- Taxon
- rapeBrassica napust0
- Organ / stage
- leavese0
- Treatment
- B application levelse0
- Outcome
- water extractable B contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total B content and water extractable B content in leaves increased with the enhance of B application levels”
t0“rape leaves”
Claim · model-written summary
Total B content varied too little among fertilizer treatments for diagnosis.
- Taxon
- rapeBrassica napust0
- Outcome
- too narrow to be used as diagnosese0
- Comparator
- B fertilizer treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the differences of total B contents among B fertilizer treatments were too narrow to be used as diagnoses”
t0“rape leaves”
Claim · model-written summary
Water extractable B in quickly-spreading and well-spread leaves was sensitive to B nutrient status at seedling stage.
- Taxon
- rapeBrassica napust0
- Organ / stage
- quickly-spreading leaves and well-spread leaves in seedling stagee0
- Outcome
- sensitive to the B nutrient statuse0
- Comparator
- B nutrient statuse0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the water extractable B content in both quickly-spreading leaves and well-spread leaves in seedling stage were sensitive to the B nutrient status”
t0“rape leaves”
Claim · model-written summary
Water extractable B was proposed as a diagnostic criterion for rape B nutrition.
- Taxon
- rapesBrassica napuse0
- Outcome
- use water extractable B as the diagnostic criterion of B nutritione0
- Qualifier
- further research was needede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was possibility to use water extractable B as the diagnostic criterion of B nutrition of rapes”
e1“further research was needed for the setup of water extractable B level in leaves as the diagnosis criterion”
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See all 55 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.