Two field experiments were conducted in the two successive seasons of
2002/2003 and 2003/2004 in Assiout governorate to evaluate the two onion cultivars
i.,e. Shandaweel1 and Giza 6 under four fertilizing treatments i.,e.chicken . cattle.
mineral and check on vegetative growth. and rruneral content as well as yield and
quality of onion bulbs. The results indicated that the vegetative growth expressed as plant height. leaf
number and bulbing ratio recorded higher values with mineral fertilizer and chicken
manure. Plant height and leaf number were not statistically affected by the two tested
cultivars, in most cases. However, bulb ratio value of Giza 6 was higher than that of
Shandaweel1. Higher N, P and K content of onion plant were recorded by chicken manure. The two tested cultivars were not statistically different in their N, P, and K content. The highest total and exportable yield were obtained by chicken manure
followed by mineral fertilizer. Total yield was not statistically affected by the tested
cultivars whereas. Shandaweel1 produced higher exportable yield than Giza 6 cv.