Paper · 1963 · The Journal of Agriculture of the University of Puerto Rico

The Propagation of Guavas from Stem Cuttings

W. Pennock; G. Maldonado

5
claims
9
verbatim quotes
4
citations
4
research areas
✓
Open access · cc-by-nc

Abstract

1. A highly successful propagation method is described by which hundreds of side-sprouts are first induced on the parent guava tree. These are later cut and rooted under alternatmg mist, with leaves attached. By using this method it is possible to produce from 500 to 1,000 guava plants from a single 3-year-old tree within 10 months. 2. An experiment is also described and discussed which showed that different rooting media, such as coarse sand and very fine gravel, with Coco-peat, fir bark, Vermiculite, Perlite, and Mexifern, had no appreciable effect on rooting. But treatment with a relatively high concentration, 200 p.p.m., of indolebutyric acid improved and accelerated rooting markedly. Rooting was still further improved if 2 percent of sugar was combined with the indolebutyric acid treatment. 3. The high susceptibility of cuttings under mist to anthracnose disease is mentioned and the usual course of the disease described. Recommendations are suggested for reducing the incidence of this disease.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

The described guava propagation method could yield 500 to 1,000 plants from one three-year-old tree within ten months.

Outcome
guava plantse0
Value
500 to 1,000 guava plantse0
Qualifier
single 3-year-old tree within 10 monthse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Psidium guajava
Psidium guajava · TaxonFuadsyazwan ( talk ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“By using this method it is possible to produce from 500 to 1,000 guava plants from a single 3-year-old tree within 10 months.”

✓ located verbatim in the source · abstract, characters 209–334 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The tested rooting media had no appreciable effect on guava cutting rooting.

Treatment
different rooting mediae0
Outcome
rootinge0
Direction
no appreciable effecte0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Psidium guajava
Psidium guajava · TaxonFuadsyazwan ( talk ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“different rooting media, such as coarse sand and very fine gravel, with Coco-peat, fir bark, Vermiculite, Perlite, and Mexifern, had no appreciable effect on rooting”

✓ located verbatim in the source · abstract, characters 402–567 · show in text ↑
t0

“Guavas”

✓ located verbatim in the source · title, characters 19–25 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Indolebutyric acid at 200 p.p.m. markedly improved and accelerated guava cutting rooting.

Treatment
200 p.p.m., of indolebutyric acide0
Outcome
rootinge0
Direction
improved and acceleratede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Psidium guajava
Psidium guajava · TaxonFuadsyazwan ( talk ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“treatment with a relatively high concentration, 200 p.p.m., of indolebutyric acid improved and accelerated rooting markedly”

✓ located verbatim in the source · abstract, characters 573–696 · show in text ↑
t0

“Guavas”

✓ located verbatim in the source · title, characters 19–25 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding 2 percent sugar to indolebutyric acid further improved guava cutting rooting.

Treatment
2 percent of sugar was combined with the indolebutyric acid treatmente0
Outcome
Rootinge0
Direction
further improvede0
Comparator
indolebutyric acid treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Psidium guajava
Psidium guajava · TaxonFuadsyazwan ( talk ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Rooting was still further improved if 2 percent of sugar was combined with the indolebutyric acid treatment.”

✓ located verbatim in the source · abstract, characters 698–806 · show in text ↑
t0

“Guavas”

✓ located verbatim in the source · title, characters 19–25 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Guava cuttings under mist were highly susceptible to anthracnose.

Outcome
susceptibility of cuttings under mist to anthracnose diseasee0
Qualifier
under miste0

Not reportedInteractor

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Psidium guajava
Psidium guajava · TaxonFuadsyazwan ( talk ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The high susceptibility of cuttings under mist to anthracnose disease is mentioned”

✓ located verbatim in the source · abstract, characters 810–892 · show in text ↑
t0

“Guavas”

✓ located verbatim in the source · title, characters 19–25 · show in text ↑

indole-3-butyric acid · growth · Psidium guajava (guava)Results differ

38 papers: 36 positive, 2 negative or no effect

35 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

34 papers more in this group

See all 38 papers →

in vitro · growth · Psidium guajava (guava)Positive and negative results

17 papers: 13 positive, 4 negative or no effect

3 papers in the same direction as this paper · 13 in the opposite direction

  1. positive
  2. positive
  3. positive

13 papers more in this group

See all 17 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.