This investigation was conducted at Ismailia Agric. Res. Station Agri. Res. Center during the two successive seasons 2003/04 and 2004/05 to study the effect of
three Nofatrin application at 30, 60 and 90 days after planting in addition to the
control treatment on yield and yield components of three flax varieties i.e., Sakha1,
Sakha2 and Giza8. Moreover, to estimate correlation coefficient ( r) between different
characters. Results obtained can be summarized as follow: 1- The flax variety Sakha1 surpass either Sakha2 or the lowest one Giza8 in total
length, technical length, straw yield per plant as well as per faddan, fiber yield per
plant as well as per faddan, fiber percentage and fiber length in both seasons and
also in combined analysis over them. 2- The variety Sakha2 ranked first and superior the other two varieties Sakha1 and
Giza8 in no. of fruiting branches, no. of capsules per plant, no. of seeds per
capsule, 1000-seed weight, seed yield per plant as well as per faddan, oil
percentage and oil yield per faddan in both seasons and combined analysis. 3- Nofatrin application times significantly differed and there are gradual increment
in the mean values of each character from the control up to the largest time of
application (at 90 days old). Moreover, the difference between the two treatment
i.e., spray after 60 and 90 days from sowing did not reached the level of
significance in most economical yield characters. 4- The estimates of correlation coefficient (r ) were highly significant and positive
between straw yield per faddan and each of straw yield per plant, technical
length, fiber yield per faddan, fiber yield per plant, fiber length, seed yield per
plant and no. of capsules per plant. On the other hand, the r values were not
significant and positive between fiber yield per faddan and each of seed yield per
faddan, seed yield per plant, no. of capsules per plant, 1000-seed weight, oil
yield per faddan and oil percentage.