PRODUCTIVITY OF BROCCOLI (Brassica oleracea) PLANTS TREATED WITH BIO, ORGANIC AND N FERTILIZERS UNDER ALLUVIAL SOIL CONDITIONS

A field experiment was carried out on broccoli (broccoli oleraceae l. var. italica cv. red acare), brassicaceae family, in faculty of agriculture, el-mansoura university, egypt during 2010 season to study the effect of both farmyard manure and agrisbone (commercial fertilizer) as biofertilizer source and n fertilizer rates on vegetative growth, yield and flower spear quality of broccoli plants grown on alluvial soils. treatments were represented all combination of fym rates (control and 20 m3 fad-1) and n fertilizer rates (control, 50,100 and 150 kg fad-1 as ammonium sulphate, (20.5 % n) in presence of agrisbone (with and without addition) in split split plot design with three replicates. the obtained results could be summarized as follows: - statistical analysis revealed that the highest mean values of leaves number, and branches number of broccoli plants were obtained from 150 kg fad-1 mineral treatment jointly with inoculated plants in absence of fym, while the highest mean values of fresh and dry weight were produced from the inoculated plants with 100 n kg fad-1 under fym treatment. on the other hand, the lowest mean values of aforementioned characteristics obtained from untreated broccoli plants. - data indicated that the maximum mean values of height and diameter spear flower produced from plants received fym and agrispone combined with 100 n kgfad-1 as compared to the other treatments. - the broccoli plants that fertilized with fym + agrispone + 100 n kgfad-1 gave the highest increments in the two stages of spear flower broccoli yield; 1st and 2nd cuts. meanwhile, unfertilized broccoli plants gave the lowest mean values of aforementioned traits in the two stages; 1st and 2nd cuts, respectively.