PRODUCTIVITY OF SOME GEMMEIZA WHEAT CULTIVARS UNDER DIFFERENT SOWING DATES AND N FIRTILIZATION LEVELS

Document Type : Original Article

Author

Argon. Dept., Fac. of Agric., Cairo Univ., Giza, Egypt

Abstract

Two field experiments were carried out in Belcas, Dakhalia Governorate,
Northern Delta, Egypt, during to winter seasons 2002/2003 and 2003/2004. The study
included three factors, viz., Gemmeiza (Gmz) cultivars (Gmz 3, Gmz 7 and Gmz 9),
three sowing dates (November 5th 15th and 25th) and three N levels (80, 100 and 120
kg N/fed). The results were as follows:
1- The CV Gmz 7, early sowing and highest N rate significantly surpassed the other
two treatments within each factor, with most studied traits
2- The cultivar Gmz 9 was the best one for producing straw yield/fed. Meanwhile, Gmz
3 successeded ¡n the production of heaviest grains.
3- The combinations which included Gmz 7, early sowing and higher N rate gave the
greatest values in the first as second order interaction, in most cases. The Gmz 9
replaced Gmz 7 ¡n the combination of producing sounded straw yield/fed.
4- Simple correlation within each pair of the studied traits was positive and significant
in most cases. .

Keywords