Abstract
Application of nitrogen at different growth stages varied the total dry weight at the ear emergence and at maturity. The early application of nitrogen increased the total dry weight and straw weight at the ear emergence and at maturity much more than late ones. But the dry weight of ears at maturity and the grain yield had not always definite relation with the time of application of nitrogen. In case of the time of application of nitrogen being different, the dry weight of ears at maturity had not always definite relation with the dry weight produced after the ear emergence nor the number of spikelets, in spite of it being strongly affected by them. Except the treatment applied nitrogen after the rate spikelet initiation stage, the dry weight of ears at maturity was positively correlated with the dry weight produced after the ear emergence. But in all the treatments applied nitrogen after the late spikelet initiation stage, the dry weight of ears at maturity was positively correlated with the number of spikelets. So, the dry weight of ears at maturity was determined by the inter-relationshp of the number of spikelets and the dry weight produced after the ear emergence as reported previously. Dry weight of shoots increased after the ear emergnce was represented as the difference of the dry weight produced after the ear emergence and the dry weight which ears needed. The number of spikelets was determind by the interrelationship of the amount of nitrogen absorbed by the late spikelet initiation stage and that absorbed during the period from the late spikelet initiation stage to the ear emergence as reported previously. And the dry weight produced after the ear emergence was positively correlated with the product of the amount of solar radiation during the ripening period by the sum of the amount of nitrogen in leaf-blades at the ear emergence and the amount of nitrogen absorbed after the ear emergence. So, the dry weight of ears and shoots, the dry weight ratio of ear to shoot at maturity could be represented as a function of the amount of nitrogen absorbed at different growth stages. In this experiment, the dry weight ratio of ear to shoot had not definite relation with grain yield, the percentage of ripened grains and the amount of carbonhydrates in shoots at maturity, respectively. So, it could not always be taken as the index of the diagnosis of the yield, the percentage of ripened grains and the translocation of carbohydrates from shoots to ears, but could be taken as the index of the diagnosis of the interrelationship of the dry weight production at different growth stages and the number of spikelets, or the index of diagnosis of the interrelationship of nitrogen absorbed at different growth stages.
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Claims 13
Claim · model-written summary
Nitrogen application timing varied rice total dry weight at ear emergence and maturity.
- Taxon
- Rice Plant
Oryza sativat0 - Treatment
- Application of nitrogen at different growth stagese0
- Outcome
- total dry weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen at different growth stages varied the total dry weight at the ear emergence and at maturity”
t0“Rice Plant”
Claim · model-written summary
Early nitrogen application increased rice total dry weight and straw weight more than late application at ear emergence and maturity.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- early application of nitrogene0
- Outcome
- total dry weight and straw weighte0
- Direction
- increasede0
- Comparator
- late onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The early application of nitrogen increased the total dry weight and straw weight at the ear emergence and at maturity much more than late ones”
t0“Rice Plant”
Claim · model-written summary
Rice ear dry weight at maturity and grain yield had no definite relation to nitrogen application timing.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- time of application of nitrogene0
- Outcome
- dry weight of ears at maturity and the grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight of ears at maturity and the grain yield had not always definite relation with the time of application of nitrogen”
t0“Rice Plant”
Claim · model-written summary
Rice ear dry weight at maturity was not consistently related to dry weight produced after ear emergence or spikelet number across nitrogen timings.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- dry weight produced after the ear emergence nor the number of spikeletse0
- Outcome
- dry weight of ears at maturitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight of ears at maturity had not always definite relation with the dry weight produced after the ear emergence nor the number of spikelets”
t0“Rice Plant”
Claim · model-written summary
Rice ear dry weight at maturity correlated positively with dry weight produced after ear emergence except under the stated nitrogen treatment.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- treatment applied nitrogen after the rate spikelet initiation stagee0
- Outcome
- dry weight of ears at maturitye0
- Direction
- positively correlatede0
- Qualifier
- dry weight produced after the ear emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except the treatment applied nitrogen after the rate spikelet initiation stage, the dry weight of ears at maturity was positively correlated with the dry weight produced after the ear emergence”
t0“Rice Plant”
Claim · model-written summary
Rice ear dry weight at maturity correlated positively with spikelet number under all nitrogen treatments after late spikelet initiation.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- treatments applied nitrogen after the late spikelet initiation stagee0
- Outcome
- dry weight of ears at maturitye0
- Direction
- positively correlatede0
- Qualifier
- number of spikeletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in all the treatments applied nitrogen after the late spikelet initiation stage, the dry weight of ears at maturity was positively correlated with the number of spikelets”
t0“Rice Plant”
Claim · model-written summary
Rice ear dry weight at maturity was determined by the joint relation of spikelet number and postemergence dry weight.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- dry weight of ears at maturitye0
- Qualifier
- inter-relationshp of the number of spikelets and the dry weight produced after the ear emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight of ears at maturity was determined by the inter-relationshp of the number of spikelets and the dry weight produced after the ear emergence”
t0“Rice Plant”
Claim · model-written summary
Rice spikelet number was determined by the relation between nitrogen uptake before late spikelet initiation and subsequent uptake until ear emergence.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- number of spikeletse0
- Qualifier
- interrelationship of the amount of nitrogen absorbed by the late spikelet initiation stage and that absorbed during the period from the late spikelet initiation stage to the ear emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of spikelets was determind by the interrelationship of the amount of nitrogen absorbed by the late spikelet initiation stage and that absorbed during the period from the late spikelet initiation stage to the ear emergence”
t0“Rice Plant”
Claim · model-written summary
Rice dry weight produced after ear emergence correlated positively with the product of ripening solar radiation and leaf nitrogen plus subsequent uptake.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- amount of solar radiation during the ripening periode0
- Outcome
- dry weight produced after the ear emergencee0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight produced after the ear emergence was positively correlated with the product of the amount of solar radiation during the ripening period by the sum of the amount of nitrogen in leaf-blades at the ear emergence and the amount of nitrogen absorbed after the ear emergence”
t0“Rice Plant”
Claim · model-written summary
Rice ear and shoot weights and their ratio at maturity could be represented as a function of nitrogen uptake at different stages.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- dry weight of ears and shoots, the dry weight ratio of ear to shoot at maturitye0
- Qualifier
- amount of nitrogen absorbed at different growth stagese0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight of ears and shoots, the dry weight ratio of ear to shoot at maturity could be represented as a function of the amount of nitrogen absorbed at different growth stages”
t0“Rice Plant”
Claim · model-written summary
Rice ear-to-shoot dry weight ratio had no definite relation to grain yield, ripened-grain percentage, or shoot carbohydrate amount.
- Taxon
- Rice PlantOryza sativat0
- Organ / stage
- eare0
- Outcome
- dry weight ratio of ear to shoote0
- Qualifier
- grain yield, the percentage of ripened grains and the amount of carbonhydrates in shoots at maturitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight ratio of ear to shoot had not definite relation with grain yield, the percentage of ripened grains and the amount of carbonhydrates in shoots at maturity”
t0“Rice Plant”
Claim · model-written summary
Rice ear-to-shoot dry weight ratio was unsuitable as a diagnostic index for yield, ripening percentage, or carbohydrate translocation.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- index of the diagnosis of the yield, the percentage of ripened grains and the translocation of carbohydrates from shoots to earse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it could not always be taken as the index of the diagnosis of the yield, the percentage of ripened grains and the translocation of carbohydrates from shoots to ears”
t0“Rice Plant”
Claim · model-written summary
Rice ear-to-shoot dry weight ratio could diagnose relations among dry weight production, spikelet number, and stage-specific nitrogen uptake.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- index of the diagnosis of the interrelationship of the dry weight production at different growth stages and the number of spikeletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“could be taken as the index of the diagnosis of the interrelationship of the dry weight production at different growth stages and the number of spikelets, or the index of diagnosis of the interrelationship of nitrogen absorbed at different growth stages”
t0“Rice Plant”
The same questions in other papers
nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
507 papers more in this group
See all 511 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.