Abstract
Abstract Field experiments were performed in two successive seasons at the Experimental Station, Faculty of Agriculture, Cairo University, Giza, Egypt, on the Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.). Cotton plants were sprayed with the growth regulator 1‐naphthaleneace acid (NAA) once (at 90 days), or twice (at 90 and 105 days) or thrice (90, 105 and 120 days) after sowing, during the square initiation and boiling stage at the concentrations of 5, 10, 15, 20 or 25 p.p.m. The volume of solution was the same for all treatments. 9601 ha −1 . The control plants were sprayed with water only. The effect of the previous treatments on yield components, cotton yield and fibre properties was studied. The application of NAA increased the number of opened bolls plant −1 , boll weight, seed index, seed cotton yield plant −1 and seed cotton and lint yields ha −1 . The most significant effects were obtained with the 15 and 20 p.p.m. concentrations. Lint percentage, fibre length parameters and micronaire value were not significantly affected by NAA. Flat bundle strength was significantly affected by NAA but with no definite trend. The application of NAA twice or thrice tended to give the best results on yield components and cotton yield compared with one application. The results of this study suggested that 20 p.p.m. of NAA gave the best figures when applied twice on the Egyptian cotton plants.
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Claims 7
Claim · model-written summary
NAA application increased the number of opened bolls per plant, boll weight and seed index of Egyptian cotton compared with water-sprayed controls.
- Taxon
- Gossypium barbadense
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Gossypium barbadensee1 - Material
- Giza 75e1
- Treatment
- application of NAAe2
- Outcome
- number of opened bolls plant −1 , boll weight, seed indexe2
- Direction
- increasede2
- Comparator
- control plants were sprayed with water onlye7
- Setting
- Field experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Field experiments were performed in two successive seasons at the Experimental Station, Faculty of Agriculture, Cairo University, Giza, Egypt”
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e2“The application of NAA increased the number of opened bolls plant −1 , boll weight, seed index, seed cotton yield plant −1 and seed cotton and lint yields ha −1”
e7“The control plants were sprayed with water only”
Claim · model-written summary
NAA application increased seed cotton yield per plant and seed cotton and lint yields per hectare compared with water-sprayed controls.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- application of NAAe2
- Outcome
- seed cotton yield plant −1 and seed cotton and lint yields ha −1e2
- Direction
- increasede2
- Comparator
- control plants were sprayed with water onlye7
- Setting
- Field experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were performed in two successive seasons at the Experimental Station, Faculty of Agriculture, Cairo University, Giza, Egypt”
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e2“The application of NAA increased the number of opened bolls plant −1 , boll weight, seed index, seed cotton yield plant −1 and seed cotton and lint yields ha −1”
e7“The control plants were sprayed with water only”
Claim · model-written summary
Lint percentage, fibre length parameters and micronaire value of Egyptian cotton were not significantly affected by NAA.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- NAAe4
- Outcome
- Lint percentage, fibre length parameters and micronaire valuee4
- Direction
- not significantly affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e4“Lint percentage, fibre length parameters and micronaire value were not significantly affected by NAA. Flat bundle strength was significantly affected by NAA but with no definite trend”
Claim · model-written summary
Flat bundle strength of Egyptian cotton was significantly affected by NAA with no definite trend.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- NAAe4
- Outcome
- Flat bundle strengthe4
- Direction
- no definite trende4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e4“Lint percentage, fibre length parameters and micronaire value were not significantly affected by NAA. Flat bundle strength was significantly affected by NAA but with no definite trend”
Claim · model-written summary
Applying NAA twice or thrice tended to give better yield components and cotton yield than one application.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- application of NAA twice or thricee5
- Outcome
- yield components and cotton yielde5
- Direction
- best resultse5
- Qualifier
- tended to givee5
- Comparator
- one applicatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e5“The application of NAA twice or thrice tended to give the best results on yield components and cotton yield compared with one application”
Claim · model-written summary
NAA at 15 and 20 p.p.m. gave the most significant effects on Egyptian cotton.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- 15 and 20 p.p.m. concentrationse3
- Outcome
- most significant effectse3
- Direction
- most significante3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e3“The most significant effects were obtained with the 15 and 20 p.p.m. concentrations”
Claim · model-written summary
NAA at 20 p.p.m. applied twice gave the best figures on Egyptian cotton plants.
- Taxon
- Gossypium barbadenseGossypium barbadensee1
- Material
- Giza 75e1
- Treatment
- 20 p.p.m. of NAAe6
- Outcome
- best figurese6
- Direction
- best figurese6
- Qualifier
- when applied twicee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Egyptian cotton cultivar Giza 75 ( Gossypium barbadense L.)”
e6“20 p.p.m. of NAA gave the best figures when applied twice on the Egyptian cotton plants”
The same questions in other papers
1-naphthaleneacetic acid · quality: grain · Gossypium barbadense (Egyptian cotton)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
1-naphthaleneacetic acid · yield · Gossypium barbadense (Egyptian cotton)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.