Response of Some Flax Genotypes to Bio, Phosphorus Fertilization and Some Micronutr-Ients Application

Abstract

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. INTROUDCTIONFlax (Linum usitatissimum L.) (Fam. Linaceae) is considered as an economical crop among about 150 ones, where it had been cultivated in the world as well as in Egypt since several thousand years ago. Many important industries depending on its two products, i.e., fiber and seeds. Fixed oil extracted from unheated seeds used for food purposes. Medicinally, crushed linseed is used in the form of a poultice and whole seeds are employed to demulcent preparations. The oil is used in liniments, and recent research