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 | ||||
Article 8, Volume 28, Issue 6, June 2003, Page 4361-4373 PDF (825 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jpp.2003.244641 | ||||
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Authors | ||||
A. M. Abd EI-Salam,; M. E. EI-Menshawi; M. K. EI-Kashlan | ||||
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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