Two field experiments were set up at Ras-Sudr Research Station, Desert
Research Center, located in South Sinai Governorate, during the two successive
seasons, 2001/2002 & 2002/2003, to study the effect of three levels of biogas manure
(1.4,2.8,4.2 ton/fed.) compared by recommended level of sheep dung (12.6ton Ifed.)
on two Brassica campestris verities (Bactol & Canola 101) from Agriculture Research
Center -Oil Crop Department, and irrigated from two underground water (4238 and
7000 ppm).Results showed that increasing irrigation water salinity from 4238 up to
7000 ppm decreased all the yield and its components of Bactol and Canola
101 varieties in both seasons. Bactol variety was superior Canola 101 variety in the
yield and its components in both seasons. Increasing organic manure rates from 1.4
ton Ifed. Up to 4.2 toni fed. increased yield and its components in both seasons. The
interaction between irrigation water salinity and two Brassica varieties was
insignificantly of all yield and its components in two seasons. The interaction between
(organic manure x two Brassica varieties x and irrigation water salinity) was
:;ignificantly of some characters yield and its components. The best treatments was
Bactol variety fertilized by Sheep dung rate 4.2 ton/fed. and irrigated from well 4500
ppm.