Abstract
Two field experiments were conducted at Sakha Station, Cotton Research Institute, Agricultural Research Center, during 2010 and 2011 seasons, to investigate the impact of irrigation interval, defoliant type and defoliation time on the yield, yield components and fiber properties of the Egyptian cotton (G. barbadense, L.) variety Giza 92 . Split Split plot design with four replicates was used. The irrigation intervals (I) occupied the main plots as follows:(I 1 ) normal irrigation ( at two-week interval) , normal irrigation (at two week interval) until flowering then increasing time to 4 week interval (I 2 ) , and four week interval (I 3 ). The second factor defoliant type (D) occupied the sub-plots with three levels: Dropp defoliant-(D 1 ) , Prep defoliant -(D 2 ), and control spraying with water-(D 3 ).The third factor, time of defoliant application (T) was distributed randomly in the sub-sub plots as follows: defoliant spray after 60% of bolls open (T ! ) , spraying after 70% of bolls open (T 2 ),spraying after 80% of bolls are open (T 3 ). The effects of all main factors were significant in both seasons except for the effect of spraying date on the no. of fruiting branches. The significance of the interaction varied according to the cotton trait. The results revealed that the best irrigation treatment is the 15-days interval throughout the growing season. The Dropp defoliant generally surpassed the Prep defoliant in affecting all characters under study. The application of defoliant after 60% of bolls are open resulted in the highest value of all traits under study except the number of fruiting branches in both seasons. It was concluded that normal irrigation coupled with the application of the defoliant Dropp after 60 % of bolls are open had a positive effect on the cotton agronomic traits, cotton yield and cotton fiber characteristics .
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Claims 7
Claim · model-written summary
The 15-day irrigation interval throughout the growing season is the best irrigation treatment for Egyptian cotton.
- Taxon
- Egyptian cotton (G. barbadense, L.)
.jpg?width=60)
Gossypium barbadensee0 - Material
- Giza 92e0
- Treatment
- 15-days interval throughout the growing seasone1
- Outcome
- best irrigation treatmente1
- Direction
- beste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e1“the best irrigation treatment is the 15-days interval throughout the growing season”
Claim · model-written summary
The Dropp defoliant generally surpassed the Prep defoliant in affecting all characters under study.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Material
- Giza 92e0
- Treatment
- Dropp defoliante2
- Outcome
- all characters under studye2
- Direction
- surpassede2
- Comparator
- Prep defoliante2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e2“The Dropp defoliant generally surpassed the Prep defoliant in affecting all characters under study”
Claim · model-written summary
Defoliant applied after 60% of bolls are open gives the highest value of all traits except fruiting branches.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Material
- Giza 92e0
- Treatment
- application of defoliant after 60% of bolls are opene3
- Outcome
- all traits under studye3
- Direction
- highest valuee3
- Qualifier
- except the number of fruiting branches in both seasonse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e3“The application of defoliant after 60% of bolls are open resulted in the highest value of all traits under study except the number of fruiting branches in both seasons”
Claim · model-written summary
Normal irrigation with the Dropp defoliant after 60% of bolls are open has a positive effect on cotton agronomic traits, yield and fibre characteristics.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Material
- Giza 92e0
- Treatment
- normal irrigation coupled with the application of the defoliant Dropp after 60 % of bolls are opene4
- Outcome
- cotton agronomic traits, cotton yield and cotton fiber characteristicse4
- Direction
- positive effecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e4“normal irrigation coupled with the application of the defoliant Dropp after 60 % of bolls are open had a positive effect on the cotton agronomic traits, cotton yield and cotton fiber characteristics”
Claim · model-written summary
Irrigation interval, defoliant type and defoliation time all had significant effects on cotton in both seasons.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Material
- Giza 92e0
- Treatment
- all main factorse5
- Outcome
- effects of all main factorse5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e5“The effects of all main factors were significant in both seasons except for the effect of spraying date on the no. of fruiting branches”
Claim · model-written summary
Spraying date has no significant effect on the number of fruiting branches of cotton.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Material
- Giza 92e0
- Treatment
- spraying datee5
- Outcome
- no. of fruiting branchese5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e5“The effects of all main factors were significant in both seasons except for the effect of spraying date on the no. of fruiting branches”
Claim · model-written summary
The significance of the irrigation, defoliant and timing interaction varies with the cotton trait.
- Taxon
- Egyptian cotton (G. barbadense, L.)Gossypium barbadensee0
- Outcome
- significance of the interactione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Egyptian cotton (G. barbadense, L.) variety Giza 92”
e6“The significance of the interaction varied according to the cotton trait”
The same questions in other papers
irrigation · quality: grain · Gossypium barbadense (Egyptian cotton)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
1 paper more in this group
See all 5 papers →application · growth · Gossypium barbadense (Egyptian cotton)Positive and negative results
6 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.