Abstract
An experiment was carried out on 25 years old guava trees hybrid I grown at the nursery of the faculty of Agriculture, Cairo University, Giza, Egypt during the two successive seasons, 2005 and 2006. Trees were subjected to the following pruning treatments, pinching, moderate or severe pruning and sprayed on 15 th February after pruning with potassium nitrate (1, 2 and 4%) or ethephon (200, 400 and 600 ppm) or dormex (0.5, 1 and 1.5%) compared with the control(sprayed with water only), to study their effect on inducing growth and yield of guava trees. Results showed a significant increase in average index number of bud burst and shoot length with severe pruning plus spraying potassium nitrate at 4% concentration compared to the other treatments. Moderate pruning plus spraying ethephon at 600 ppm produced the highest number of new shoots in both seasons. Dormex at 1.5% with moderate pruning gave the highest average index number of flower bud burst in the first season. Meanwhile, ethephon at 600 ppm with severe pruning produced the highest average index number of flower bud burst in the second season. A pronounced and significant increase in initial fruit set was found with moderate pruning and application of potassium nitrate at 4%. Also, pruning treatments with spraying chemicals substances improved tree yield.
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 6
Claim · model-written summary
Severe pruning plus 4% potassium nitrate significantly increased bud burst index and shoot length against other treatments.
- Taxon
- guava trees
Psidium guajavat0 - Treatment
- severe pruning plus spraying potassium nitrate at 4% concentratione0
- Outcome
- average index number of bud burst and shoot lengthe0
- Direction
- increasee0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant increase in average index number of bud burst and shoot length with severe pruning plus spraying potassium nitrate at 4% concentration compared to the other treatments”
t0“guava trees”
Claim · model-written summary
Moderate pruning plus 600 ppm ethephon produced the most new shoots in both seasons.
- Taxon
- guava treesPsidium guajavat0
- Treatment
- Moderate pruning plus spraying ethephon at 600 ppme0
- Outcome
- number of new shootse0
- Direction
- higheste0
- Qualifier
- both seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate pruning plus spraying ethephon at 600 ppm produced the highest number of new shoots in both seasons”
t0“guava trees”
Claim · model-written summary
Moderate pruning plus 1.5% Dormex gave the highest flower bud burst index in the first season.
- Taxon
- guava treesPsidium guajavat0
- Treatment
- Dormex at 1.5% with moderate pruninge0
- Outcome
- average index number of flower bud burste0
- Direction
- higheste0
- Qualifier
- first seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dormex at 1.5% with moderate pruning gave the highest average index number of flower bud burst in the first season”
t0“guava trees”
Claim · model-written summary
Severe pruning plus 600 ppm ethephon gave the highest flower bud burst index in the second season.
- Taxon
- guava treesPsidium guajavat0
- Treatment
- ethephon at 600 ppm with severe pruninge0
- Outcome
- average index number of flower bud burste0
- Direction
- higheste0
- Qualifier
- second seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon at 600 ppm with severe pruning produced the highest average index number of flower bud burst in the second season”
t0“guava trees”
Claim · model-written summary
Moderate pruning plus 4% potassium nitrate significantly increased initial fruit set.
- Taxon
- guava treesPsidium guajavat0
- Treatment
- moderate pruning and application of potassium nitrate at 4%e0
- Outcome
- initial fruit sete0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pronounced and significant increase in initial fruit set was found with moderate pruning and application of potassium nitrate at 4%”
t0“guava trees”
Claim · model-written summary
Pruning with chemical sprays improved guava tree yield.
- Taxon
- guava treesPsidium guajavat0
- Treatment
- pruning treatments with spraying chemicals substancese0
- Outcome
- tree yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pruning treatments with spraying chemicals substances improved tree yield”
t0“guava trees”
The same questions in other papers
potassium nitrate · growth · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- positive
- positive
(2-chloroethyl)phosphonic acid · phenology · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- positive
- positive
potassium nitrate · yield · Psidium guajava (guava)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →pruning · yield · Psidium guajava (guava)Results differ
67 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- positive
66 papers more in this group
See all 70 papers →pruning · phenology · Psidium guajava (guava)Positive and negative results
12 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- no effect
11 papers more in this group
See all 15 papers →application · growth · Psidium guajava (guava)Positive and negative results
27 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
25 papers more in this group
See all 29 papers →pruning · growth · Psidium guajava (guava)Positive and negative results
37 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
37 papers more in this group
See all 41 papers →application · yield · Psidium guajava (guava)Results agree
61 papers in the same direction as this paper
- positive
- positive
- positive
58 papers more in this group
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.