Abstract
An experiment was carried out with young guava trees during the period from 1970 to 1972 with differential supplies of phosphorus as foliar spray to determine the nutrient content, seasonal variation of nutrients and to find out the most productive range.Increasing the phosphorus supply tended to gradually increase the leaf P content. There was no effect on N and K contents of the leaves. Seasonal changes in the concentrations of N, P, K and dry matter have been studied over an annual growth cycle. The peak concentrations of each constituent in the tissues were found before the growth commenced and after the growth ceased, while minimal concentration was found at the end of the season, i. e., after full maturation of fruit. There were two periods in a year, viz., January-February and July-August when N, P and K concentrations in the leaves were stable. There was a significant increase in yield with application of superphosphate. More yield was recorded under the 4 per cent spray treatment in both the seasons and years. Significant positive correlation coefficients were found between yield and leaf P content. Quadratic regression equations were fitted to the relation between yield and rate of phosphorus application. The most productive range for P values was 0.45 to 0.65 per cent on the dry weight basis.
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Claims 9
Claim · model-written summary
Increasing phosphorus supply tended to raise guava leaf P content.
- Taxon
- Guava
Psidium guajavat0 - Treatment
- phosphorus supplye0
- Outcome
- leaf P contente0
- Direction
- increasee0
- Qualifier
- tended toe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the phosphorus supply tended to gradually increase the leaf P content.”
t0“Guava”
Claim · model-written summary
Phosphorus supply had no effect on guava leaf N and K contents.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- Phosphorust0
- Outcome
- N and K contents of the leavese0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect on N and K contents of the leaves.”
t0“Phosphorus Fertilization of Guava”
Claim · model-written summary
Guava tissue constituent concentrations peaked before growth began and after it ceased.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- peak concentrations of each constituent in the tissuese0
- Direction
- peake0
- Qualifier
- before the growth commenced and after the growth ceasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peak concentrations of each constituent in the tissues were found before the growth commenced and after the growth ceased”
t0“Guava”
Claim · model-written summary
Guava tissue constituent concentrations were lowest after fruit maturation.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- concentratione0
- Direction
- minimale0
- Qualifier
- after full maturation of fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“minimal concentration was found at the end of the season, i. e., after full maturation of fruit.”
t0“Guava”
Claim · model-written summary
Guava leaf N, P, and K concentrations were stable in January-February and July-August.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- N, P and K concentrations in the leavese0
- Direction
- stablee0
- Qualifier
- January-February and July-Auguste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“January-February and July-August when N, P and K concentrations in the leaves were stable.”
t0“Guava”
Claim · model-written summary
Superphosphate application significantly increased guava yield.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- application of superphosphatee0
- Outcome
- yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant increase in yield with application of superphosphate.”
t0“Guava”
Claim · model-written summary
A 4 per cent spray produced more guava yield in both seasons and years.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- 4 per cent spray treatmente0
- Outcome
- yielde0
- Direction
- Moree0
- Qualifier
- both the seasons and yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More yield was recorded under the 4 per cent spray treatment in both the seasons and years.”
t0“Guava”
Claim · model-written summary
Guava yield was significantly positively correlated with leaf P content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant positive correlation coefficients were found between yield and leaf P content.”
t0“Guava”
Claim · model-written summary
The most productive guava leaf P range was 0.45 to 0.65 per cent dry weight.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- most productive range for P valuese0
- Value
- 0.45 to 0.65 per cente0
- Qualifier
- dry weight basise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most productive range for P values was 0.45 to 0.65 per cent on the dry weight basis.”
t0“Guava”
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phosphorus · yield · Psidium guajava (guava)Positive and negative results
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- no effect
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See all 62 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.