Hamed, F. (2012). RESPONSE OF GIZA 90 COTTON CULTIVAR TO SOWING DATES AND FIRST IRRIGATION( AL-MOHAYAT) TIME. Journal of Plant Production, 3(12), 3027-3035. doi: 10.21608/jpp.2012.85367
F. S. Hamed. "RESPONSE OF GIZA 90 COTTON CULTIVAR TO SOWING DATES AND FIRST IRRIGATION( AL-MOHAYAT) TIME". Journal of Plant Production, 3, 12, 2012, 3027-3035. doi: 10.21608/jpp.2012.85367
Hamed, F. (2012). 'RESPONSE OF GIZA 90 COTTON CULTIVAR TO SOWING DATES AND FIRST IRRIGATION( AL-MOHAYAT) TIME', Journal of Plant Production, 3(12), pp. 3027-3035. doi: 10.21608/jpp.2012.85367
Hamed, F. RESPONSE OF GIZA 90 COTTON CULTIVAR TO SOWING DATES AND FIRST IRRIGATION( AL-MOHAYAT) TIME. Journal of Plant Production, 2012; 3(12): 3027-3035. doi: 10.21608/jpp.2012.85367
RESPONSE OF GIZA 90 COTTON CULTIVAR TO SOWING DATES AND FIRST IRRIGATION( AL-MOHAYAT) TIME
Cotton Research Institute, Agric. Res. Cent. Giza, Egypt.
Abstract
Two field experiments were carried out at Shandweel Agricultural Research Station in 2009 and 2010 seasons to study the effect of sowing dates and first irrigation( Al-Mohayat) on growth, earliness, seed cotton yield and its components of Giza 90 (Gossypium barbadense L.). A split-plot design with four replications was used. The main plots were assigned to sowing dates (March 25, April 10 and April 25). Al-Mohayat irrigation time i.e., two, three and four weeks after sowing were assigned in the sub-plots. The results indicated that early sowing (March 25) significantly increased days to first flower, days to first open boll, number of open bolls/plant, seed cotton yield per plant and per feddan in both seasons. While, plant height at harvest and location of first fruiting node branch were decreased. Meanwhile, number of fruiting branches/plant, boll weight and number of plants at harvest/feddan were not significantly affected by sowing dates in both seasons. Delaying Al-Mohayat irrigation to four weeks after sowing significantly increased plant height at harvest, location of first fruiting node branch and days to first open boll in both seasons. While,delaying Al-Mohayat irrigation to three weeks after sowing significantly increased number of open bolls/plant, seed cotton yield per plant and per feddan in both seasons. Meanwhile, number of fruiting branches/plant, days to first flower, boll weight and number of plants at harvest/feddan were not significantly affected by Al-Mohayat irrigation.The interaction between sowing dates and Al-Mohayat irrigation had a significant effect on plant height at harvest, boll weight, number of open bolls/plant, seed cotton yield per plant and per feddan in both seasons. While, number of fruiting branches/plant, days to first open boll and number of plants at harvest/feddan were not affected in both seasons. Generally, best results were obtained when cotton plants were sown early (25 March) and Al-Mohayat irrigation (three weeks).
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