Abd EI-Salam,, A., EI-Menshawi, M., EI-Kashlan, M. (2003). EFFECT . OF SOME NITROGEN SOURCES, NITROGEN DOSES AND TIME OF SPLITTING ON YIELD AND QUALlliY OF EGYPTIAN COTTON UNDER SOIL SALINITY. Journal of Plant Production, 28(6), 4361-4373. doi: 10.21608/jpp.2003.244641
A. M. Abd EI-Salam,; M. E. EI-Menshawi; M. K. EI-Kashlan. "EFFECT . OF SOME NITROGEN SOURCES, NITROGEN DOSES AND TIME OF SPLITTING ON YIELD AND QUALlliY OF EGYPTIAN COTTON UNDER SOIL SALINITY". Journal of Plant Production, 28, 6, 2003, 4361-4373. doi: 10.21608/jpp.2003.244641
Abd EI-Salam,, A., EI-Menshawi, M., EI-Kashlan, M. (2003). 'EFFECT . OF SOME NITROGEN SOURCES, NITROGEN DOSES AND TIME OF SPLITTING ON YIELD AND QUALlliY OF EGYPTIAN COTTON UNDER SOIL SALINITY', Journal of Plant Production, 28(6), pp. 4361-4373. doi: 10.21608/jpp.2003.244641
Abd EI-Salam,, A., EI-Menshawi, M., EI-Kashlan, M. EFFECT . OF SOME NITROGEN SOURCES, NITROGEN DOSES AND TIME OF SPLITTING ON YIELD AND QUALlliY OF EGYPTIAN COTTON UNDER SOIL SALINITY. Journal of Plant Production, 2003; 28(6): 4361-4373. doi: 10.21608/jpp.2003.244641
EFFECT . OF SOME NITROGEN SOURCES, NITROGEN DOSES AND TIME OF SPLITTING ON YIELD AND QUALlliY OF EGYPTIAN COTTON UNDER SOIL SALINITY
Cotton Physiology Section, Agriculture Research Center, Giza, Egypt
Abstract
Two field experiments were carried out at EI-Se/W Agricultural Experim?nt Stalion during 2001 and 2002 seasons to evaluate the effect of three differ,nt nitrogen sources; namery ammonium sulpha te, urea and ammonium nllrat'! at two rates (60 and 90 kg rmed.) and three splitting N doses and their interaction on yield and Quality ot EgypUan cotton (Giza 86). A split sp'it-plot dMign wi\h 4 replicates as used. The results obtained could be summarized as follows:
Nitrogen sources had a significant effect on planl height. number ot fruitln9 branches, number of open boUa(plant, boll weight, seed index. lint percentage, earliness %. seed cotton yieldlfed, protein percentage, oil percentage, tbtal chlorophyll and nitrogen content in cotton leaves. Increasing N-rafes up to 190 ItglNJfed. significantly increased plant height, number 01 lruiling branches. number ot open bOils per plant. seed index. lint percentage, earliness percentage. Splitting N sources three times markedly inC/eased plant height, number of open bolls per plant, bOll weight. earliness percentage and seed cotton yield kentsr per Ieddan. The Inleraction between N sources and N rates had slgnificanl effecl on number of open bOlls/plent, earliness %. prolein %, 011 % and total chlorophyll in ecucn leaves. while the interaction between N sources and number of N additions had a significant effect on earliness percentage and total chlorophyll in cotton leaves in 2001 season only. The interaction between N sources l( N rates x number of N additions had significant effect on earliness %.
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