Abstract
The yield,quality and economic return of navel orange are investigated when different levels of fertilizers are applied to the 11-years-old Newhall navel orange trees in Duliu River valley of Guizhou province.The results show that applying 25% multiple fertilizer of N∶P∶K(8∶6∶6)with 1.5 kg per tree were insufficient to meet the plant's nutrient needs,therefore the yield and quality of orange was poor.In fact,even the yearly fertilizer level increased to 3 kg per tree,the contents of most nutrient elements in leaves lowered than that of 'fitting values' of nutrient diagnosis and the yield was not satisfying.Only when the yearly fertilizer level was up to 5 kg per tree,the contents of nutrient elements in leaves reach to the range of fitting values and inevitably the orange was high-yield,good-quality and better economic return.
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 5
Claim · model-written summary
At 1.5 kg per tree, fertilizer was insufficient for nutrient needs and orange yield and quality were poor.
- Taxon
- navel orange
Citrus sinensise1 - Material
- Newhalle1
- Treatment
- 25% multiple fertilizer of N∶P∶K(8∶6∶6)with 1.5 kg per treee0
- Outcome
- yield and quality of orangee0
- Direction
- poore0
- Setting
- Duliu River valley of Guizhou provincee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applying 25% multiple fertilizer of N∶P∶K(8∶6∶6)with 1.5 kg per tree were insufficient to meet the plant's nutrient needs,therefore the yield and quality of orange was poor.”
t0“navel orange”
e1“11-years-old Newhall navel orange trees in Duliu River valley of Guizhou province.”
Claim · model-written summary
At 3 kg per tree, most leaf nutrient elements were below fitting values.
- Taxon
- navel orangeCitrus sinensist0
- Treatment
- 3 kg per treee0
- Outcome
- contents of most nutrient elements in leavese0
- Direction
- lowerede0
- Comparator
- fitting valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“even the yearly fertilizer level increased to 3 kg per tree,the contents of most nutrient elements in leaves lowered than that of 'fitting values' of nutrient diagnosis”
t0“navel orange”
Claim · model-written summary
At 3 kg per tree, yield was unsatisfactory.
- Taxon
- navel orangeCitrus sinensist0
- Treatment
- 3 kg per treee0
- Outcome
- yielde0
- Direction
- not satisfyinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“even the yearly fertilizer level increased to 3 kg per tree,the contents of most nutrient elements in leaves lowered than that of 'fitting values' of nutrient diagnosis and the yield was not satisfying.”
t0“navel orange”
Claim · model-written summary
At 5 kg per tree, leaf nutrients reached fitting values.
- Taxon
- navel orangeCitrus sinensist0
- Treatment
- 5 kg per treee0
- Outcome
- contents of nutrient elements in leavese0
- Direction
- reache0
- Comparator
- fitting valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yearly fertilizer level was up to 5 kg per tree,the contents of nutrient elements in leaves reach to the range of fitting values”
t0“navel orange”
Claim · model-written summary
At 5 kg per tree, orange was high-yielding and good-quality, with better economic returns.
- Taxon
- navel orangeCitrus sinensist0
- Treatment
- 5 kg per treee0
- Outcome
- oranget0
- Direction
- high-yield,good-quality and better economic returne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yearly fertilizer level was up to 5 kg per tree,the contents of nutrient elements in leaves reach to the range of fitting values and inevitably the orange was high-yield,good-quality and better economic return.”
t0“navel orange”
The same questions in other papers
fertilization · quality: general · Citrus sinensis (sweet orange)Positive and negative results
4 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.