The present investigation was carried out at Giza Experimental Station,
A.R.C. (clay loam soil) and at Tag EI-Ezz Research Station (moderately saline soil)
during the two growing seasons of 2000/2001 and 2001/2002 to study the effect of
biofertilizer (phosphorein, 10 glkg seeds), micronutrients (cotngein, 15 glkg seeds and
foliafeed C, 0.7 g/l) and gibberellin (GA3, 0.1 g/I) on yield and productivity as well as
vitamin E of oil seeds in flax plant grown under clay loam and moderately saline soil
conditions. The obtained results indicated that clay loam soil surpassed moderately
saline soil in flax yield (seed, straw, fiber yield and its components). Phosphorein
significantly increased seed, straw and fiber yield and its components. Also,
phosphorein with recommended dose of phosphorus fertilizer (at the rate of 100 kg
PzOslfed.) (PzOs) surpassed the increase by adding phosphorein combined with half
dose of P20S (1/2 P₂0s). There are significant increases in stem diameter and fiber
fineness due to the interaction between soil type and phosphorein biofertilizer
combined with recommended or half dose of P20S. Moreover, there was significant
increase in seed, straw, fiber yield and its components of flax plants grown under clay
loam and moderately saline soil by using cotngein or foliafeed C application as
micronutrients compounds. Cotngein seed coating application surpassed foliafeed C
foliar application in seed, straw, fiber yield/fed. Using GA3 as foliar application at the
rate of 100 ppm increased seed, straw, oil and fiber yield and its components. Vitamin
E (a-tocopherol) concentration of the oil seeds increased in the plants grown under
moderately saline soil when compared with those grown under clay loam soil. a-
tocopherol concentration in linseed oil increase significantly by flax seeds treated with
phosphorein, cotngein, foliafeed C or GA3 application when compared with control-
untreated plants.