RESPONSE OF SOME FLAX GENOTYPES TO BIO, PHOSPHORUS FERTILIZATION AND SOME MICRONUTR-IENTS APPLICATION

Two field experiments were carried out at Gemmiza Res. Station, Gharbia Governorate, Agric. Res. Center during the two successive seasons of 2004/2005 and 2005/2006 to study the response of three flax genotypes namely Sakha 1 , Sakha 2 and S.2465/1 to six fertilizer treatments, i.e., 0 (control), calcium superphoshate (15.5% P₂O₅), Phosphorein (P-biofertilizer), Phosphorein + calcium superphoshate (15.5% P₂O₅), Coatingein (Zn + Fe + Mn chelates) + calcium superphoshate (15.5% P₂O₅) and Phosphorein + Coatingein + calcium superphoshate (15.5% P₂O₅). A Split plot design with four replications was used. The results of this investigation could be summarized as follow:
   The flax variety Sakha 1 exhibited highest fiber yield/fed, highest value of the major unsaturated fatty acid Linolenic, refractive index, specific gravity,  and recorded least peroxide value of oil. While, it ranked the second after Sakha 2 in straw yield/fed, and the lowest estimates in all straw characters obtained by S.2465/1. In the same time, the flax strain 2465/1 ranked the first and surpassed Sakha 1 and Sakha 2 in seed yield/plant as well as per feddan, number of capsules/plant, oil yield/fed and oil percentage.
Moreover, maximum straw and seed yields were obtained by using the mixture of fertilizer  phosphorein + calcium superphoshate (15.5% P₂O₅)+ coatingein .
        Phenotypic correlation coefficients among straw yield / plant exhibited significant positive correlations with each of plant height, technical length, seed yield / plant and number of capsules / plant. Also, seed yield exhibited significant positive correlations with each of number of capsules, number of apical branches, plant height , technical length and stem diameter. These results, supports the evidence for the possibility of isolating genotypes characterized with high straw yielding ability and simultaneous high seed potentialities.     
In conclusion, Sakha 1 was the first one preferred for food and medicinal purposes followed by S. 2465/1. So, it could be recommended to plant of Sakha 1 genotype to produce high fiber yield with the high oil quality and S. 2465/1 to produce high yield of seed and oil with the addition of phosphorein + calcium superphoshate (15.5% P₂O₅) + coatingein.