Two field experiments were carried out at the Agricultural Research and
Experimental Center, Faculty of Agriculture at Moshtohor, Zagazig University, during
2001/ 2002 and 2002 / 2003 seasons to study the effect of Bradyrhizobum inoculation ,
nitrogen fertilizer rates and foliar application with molybdenum on yield , its
components and seed quality of lupin cv. Giza 1. Each experiment included 12
treatments which were the combination between two inoculation treatments
(uninoculation and inoculation), three N rates (0 , 15 and 30 kg N/fed) and two spraying
treatments with Mo ( tap water and 30 ppm). The obtained results of each season and
the combined analysis of two seasons revealed that:-
1-Inoculated plants significantly surpassed uninoculated ones in number of
nodules/plant , plant height , number of branches and pods / plant , seed yield/plant,
100- seed weight and seed yield/fed . Number of seeds/pod , pods weight/plant , seed N
content % and seed protein content % were not affected by inoculation.
2-Adding nitrogen fertilizer to lupin plants caused an increase in all traits studied.
Nitrogen fertilization at a rate of 30 kg N/fed increased seed yield/fed over unfertilized
plants and that received 15 kg N/fed by 38.8 and 7.7 %, 35.4 and 6.7 % and 37.0 and
7.2 % in the first season, second season and combined , respectively.
3-Molybdenum application effect on all traits studied were significant in the 1st
and 2nd

seasons as well as combined analysis except plant height and seed yield/fed in the first
season and number of seeds/pod in the 2nd
season.
4-Inoculation x N rates interaction had significant effect on nodules number/plant, plant
height, seed and protein yields/fed and N uptake/fed., while number of nodules/plant
and seed yield/plant were significantly affected by the interaction between Mo spraying
and N rates.