Abstract
The present study was carried out at Mallawi Agric. Res. Station, Minia, in 2001 and 2002 seasons to study the effect of foliar application of ethrel (ethephon) in low concentrations (0, 10, 20 and 40 ppm) at squaring stage or at early flowering stage on late sown cotton plants of Giza 83 cultivar. The obtained results showed that, in comparison with the control, ethrel tended to decrease plant height, leaves content of chlorophyll and number of days to first open boll with increasing the reduction in Ihese traits as ethrel concentration increased. On the other hand, aU ethrel concentrations, In generat, increased leaves content of sugars, number of sympodla, flowers, and open bolls per plant, boll relenlion%, ear1iness%. and seed colton yield per faddan, however, all of these traits were significantly increased over the control only by 10 or 20 ppm which gave Ihe highest yield and the best results in general. Fiber properties were not affected by ethrel treatments. Both time of application and the interaction between time of application and elhrel concsntration had almost no rnarxed affects on plant growth and yield. It could be concluded that treatment of late sown cotton plants with 10 or 20 ppm of ethrel at either squaring stage or early flowering stage improved the plant fruiting performance and yield under lale planting conditions.
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Claims 6
Claim · model-written summary
Ethrel tended to reduce cotton plant height, chlorophyll and days to first open boll with greater reduction at higher concentration.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- GIZA 83t0
- Treatment
- ethrele0
- Outcome
- plant height, leaves content of chlorophyll and number of days to first open bolle0
- Direction
- decreasee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethrel tended to decrease plant height, leaves content of chlorophyll and number of days to first open boll with increasing the reduction in Ihese traits as ethrel concentration increased”
t0“COTTON CULTIVAR GIZA 83”
e1“in comparison with the control”
Claim · model-written summary
Ethrel generally increased leaf sugars, fruiting traits, earliness and seed cotton yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- ethrele1
- Outcome
- leaves content of sugars, number of sympodla, flowerse0
- Direction
- increasede0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaves content of sugars, number of sympodla, flowers, and open bolls per plant, boll relenlion%, ear1iness%. and seed colton yield per faddan”
t0“COTTON”
e1“as ethrel concentration increased”
e2“significantly increased over the control”
Claim · model-written summary
Only 10 or 20 ppm ethrel significantly increased these traits and gave the highest yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 10 or 20 ppme0
- Outcome
- yielde0
- Direction
- higheste0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all of these traits were significantly increased over the control only by 10 or 20 ppm which gave Ihe highest yield and the best results in general”
t0“COTTON”
Claim · model-written summary
Ethrel did not affect fiber properties.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- ethrel treatmentse0
- Outcome
- Fiber propertiese0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fiber properties were not affected by ethrel treatments”
t0“COTTON”
Claim · model-written summary
Application time and its interaction with concentration had almost no marked effects on plant growth and yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- time of applicatione0
- Outcome
- plant growth and yielde0
- Direction
- almost no rnarxed affectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both time of application and the interaction between time of application and elhrel concsntration had almost no rnarxed affects on plant growth and yield”
t0“COTTON”
Claim · model-written summary
The authors recommend 10 or 20 ppm ethrel at squaring or early flowering for late-sown cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 10 or 20 ppm of ethrele0
- Outcome
- improved the plant fruiting performance and yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment of late sown cotton plants with 10 or 20 ppm of ethrel at either squaring stage or early flowering stage improved the plant fruiting performance and yield under lale planting conditions”
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- positive
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2 papers in the same direction as this paper · 1 in the opposite direction
- negative
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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.