Abstract
Two field experiments were conducted at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate during 2002 and 2003 seasons to study the response of Giza 88 cotton cultivar to two sowing dates at early sowing (25th March) and late sowing (5th May) and thinning dates were at three physiological ages; i.e. when cotton plants formed the first true leaf, the second true leaf and the third true leaf. A split plot design was used with four replications. The obtained results revealed that early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position. On the other hand, earliness measurements, such as position of first sympodium, days to first flower appearance and cracking boll and earliness percentage were significantly increased when cotton plants were sown early in the season. Also, the early sowing date (25th March) produced the highest value of open bolls, boll weight, seed cotton yield /plant and feddan, while number of unopen bolls/plant, seed index and lint percentage were not significantly affected by sowing date. On the other hand, thinning date significantly affected the growth traits, earliness parameters, yield and its components in the two seasons except number of unopen bolls/plant, seed index and lint percentage. Thinning conducted when cotton plants formed the second true leaf gave the best result in the two seasons. Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan. The interaction had insignificant effect on all traits studied except number of unopen bolls per plant, seed index and lint percentage. Generally, best results were obtained when cotton plants were sown early (25th March) and thinned after formation of the second true leaf.
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Claims 20
Claim · model-written summary
Early sowing changed number of internodes.
- Taxon
- COTTON
Gossypium hirsutumt0 - Treatment
- early sowing (25 March)e0
- Outcome
- number of internodese0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed sympodia on the main stem.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- sympodia on the main steme0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed number of open bolls per plant.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- number of open bolls per plante0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed boll weight.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- boll weighte0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed number of days to the first flower appearance.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- number of days to the first flower appearancee0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed days to the first cracking boll.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- days to the first cracking bolle0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed earliness percentage.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- earliness percentagee0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed seed cotton yield, per plant and feddan.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- seed cotton yield, per plant and feddane0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed plant height.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- plant heighte0
- Direction
- reverse trende0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed internode length.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- internode lengthe0
- Direction
- reverse trende0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed number of monopodial branches.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- number of monopodial branchese0
- Direction
- reverse trende0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Early sowing changed first sympodium position.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- early sowing (25 March)e0
- Outcome
- first sympodium positione0
- Direction
- reverse trende0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“early sowing (25 March) significantly increased number of internodes and sympodia on the main stem, number of open bolls per plant, boll weight, number of days to the first flower appearance, days to the first cracking boll, earliness percentage and seed cotton yield, per plant and feddan while the reverse trend was noticed with plant height, internode length number of monopodial branches and first sympodium position.”
Claim · model-written summary
Sowing date did not significantly affect number of unopen bolls/plant.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- sowing datee0
- Outcome
- number of unopen bolls/plante0
- Direction
- not significantly affectede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“number of unopen bolls/plant, seed index and lint percentage were not significantly affected by sowing date.”
Claim · model-written summary
Sowing date did not significantly affect seed index.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- sowing datee0
- Outcome
- seed indexe0
- Direction
- not significantly affectede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“number of unopen bolls/plant, seed index and lint percentage were not significantly affected by sowing date.”
Claim · model-written summary
Sowing date did not significantly affect lint percentage.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- sowing datee0
- Outcome
- lint percentagee0
- Direction
- not significantly affectede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“number of unopen bolls/plant, seed index and lint percentage were not significantly affected by sowing date.”
Claim · model-written summary
Delaying thinning increased plant height.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- Delaying thinning datee0
- Outcome
- plant heighte0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan.”
Claim · model-written summary
Delaying thinning increased internode length.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- Delaying thinning datee0
- Outcome
- internode lengthe0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan.”
Claim · model-written summary
Delaying thinning increased position of first sympodium.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- Delaying thinning datee0
- Outcome
- position of first sympodiume0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan.”
Claim · model-written summary
Delaying thinning increased days from sowing to appearance of the first flower.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- Delaying thinning datee0
- Outcome
- days from sowing to appearance of the first flowere0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan.”
Claim · model-written summary
Delaying thinning increased cracking the first boll.
- Taxon
- COTTONGossypium hirsutumt0
- Treatment
- Delaying thinning datee0
- Outcome
- cracking the first bolle0
- Direction
- increasede0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“COTTON”
e0“Delaying thinning date significantly increased plant height, the internode length, position of first sympodium, days from sowing to appearance of the first flower and cracking the first boll while, the reverse trend was true for number of internodes on the main stem, number of monopodia and sympodia/plant, earliness percentage, number of open bolls/plant, boll weight, lint % and seed cotton yield/plant and feddan.”
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