EFFECT OF DIFFERENT NPK TREATMENTS ON YIELD AND YIELD COMPONENTS OF TWO FLAX VARIETIES

Two field experiments were conducted at Gemmeiza Res. Station, Gharbia Governorate, Agric. Res. Center during  the two successive seasons of 2005/06 and 2006/07 to study the eight NPK treatments i.e., 1- control (zero), 2- 45 kg N/fed, 3- 15kg P₂O₅/fed, 4- 24 kg K₂O/fed, 5- 45 kg N + 15 kg P₂O₅/fed, 6- 45 kg N + 24 kg K₂O₅/fed, 7- 15 kg P₂O₅ + 24 kg K₂O/fed and 45 kg N +15 kg P₂O₅ + 24 kg K₂O/fed on yield and yield components of the two flax varieties Sakha 3 and Sakha 1, in addition to simple correlation coefficients among eight flax characters.
 Results obtained can be summarized as follow:
The flax variety Sakha 3 achieved maximum estimates in straw yield/fed as well as per plant, plant height, technical length and stem diameter when compared with Sakha 1. At the same time, Sakha 1 surpass Sakha 3 in fruiting zone length, seed yield/fed as well as per plant, no. of capsules/plant, no. of seeds/capsule and no. of apical branches. Moreover, application treatment. of NPK at the levels 45 kg N + 15 kg P₂O₅/fed produced maximum mean values of straw and seed characters under this study.
The correlation coefficients among straw yield/plant exhibited significant positive correlations with each of plant height, technical length, stem diameter, no. of capsules/plant, no. of seeds/capsule and no. of apical branches. Also, no. of capsules/plant exhibited significant positive correlations with each of no. of seeds/capsule and no. of apical branches.