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Elyan, S., Abdalah, A., El-Ssadi, S. (2008). EFFECT OF THREE SOWING DATES ON DIFFERENT CHARACTERISTICS OF FOUR EGYPTIAN COTTON VARIETIES. Journal of Plant Production, 33(3), 1721-1736. doi: 10.21608/jpp.2008.164665
Sohair D. Elyan; Amany M. Abdalah; Sawsan A. El-Ssadi. "EFFECT OF THREE SOWING DATES ON DIFFERENT CHARACTERISTICS OF FOUR EGYPTIAN COTTON VARIETIES". Journal of Plant Production, 33, 3, 2008, 1721-1736. doi: 10.21608/jpp.2008.164665
Elyan, S., Abdalah, A., El-Ssadi, S. (2008). 'EFFECT OF THREE SOWING DATES ON DIFFERENT CHARACTERISTICS OF FOUR EGYPTIAN COTTON VARIETIES', Journal of Plant Production, 33(3), pp. 1721-1736. doi: 10.21608/jpp.2008.164665
Elyan, S., Abdalah, A., El-Ssadi, S. EFFECT OF THREE SOWING DATES ON DIFFERENT CHARACTERISTICS OF FOUR EGYPTIAN COTTON VARIETIES. Journal of Plant Production, 2008; 33(3): 1721-1736. doi: 10.21608/jpp.2008.164665

EFFECT OF THREE SOWING DATES ON DIFFERENT CHARACTERISTICS OF FOUR EGYPTIAN COTTON VARIETIES

Article 4, Volume 33, Issue 3, March 2008, Page 1721-1736  XML PDF (859.82 K)
Document Type: Original Article
DOI: 10.21608/jpp.2008.164665
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Authors
Sohair D. Elyan; Amany M. Abdalah; Sawsan A. El-Ssadi
Fac. of Agric., Cairo Univ., Egypt.
Abstract
This investigation was carried out at the Agricultural Experiment and Research Station, Faculty of Agriculture, Cairo University during 2001 and 2002 seasons to study the effect of  three sowing dates (25 March, 10 April and 25 April) on four Egyptian cotton cultivars (Giza 70, Giza 80, Giza 83 and Giza 89).
The results obtained could be summarized as follows:
-    Plant height decreased as sowing date delayed. Giza 70 gave the tallest plants.
-    Sowing on 25 March and Giza 83 variety gave the best values of  position 1st sympodial, branches/plant, No. of sympodial branches/plant, seed index, lint percentage and seed cotton yield/feddan .
-    Delayed sowing date (25 April) and Giza 83 gave the lowest values for number of days from sowing to 1st bloom and 1st open boll. While Giza 70 gave the highest boll weight with delayed sowing date.
-    Early sowing date (25 March) with Giza 83 and Giza 89 varieties gave the highest values of fiber length at 2.5 % span length, fiber strength, fiber stiffness, fiber toughness and yarn strength.
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