Estimation of Straw, Seed and Oil Yields for Flax Plants (Linum usitatissimum L.) Cultivars of Foliar Application of Mn, Fe and Zn under Dry Environment

TWO years field work were accomplished at Demo experimental farm, Faculty of Agriculture, Fayoum University, Egypt during 2015/2016 and 2016/2017 years to study the effect of Mn, Fe and Zn foliar spraying on three flax cultivars productivity. The arrangement of split-plot in RCBD with three replications was applied. Three flax cultivars (Sakha-1, Sakha-2 and Giza-9) occupied the main plots while, three micro-nutrients levels (Zero, 300 and 600ppm fed^-1) distributed in the sub-plot. The form of applied micro-nutrients was EDTA 13% Mn, EDDHSA 6% Fe and EDTA 14% Zn. Results showed that Sakha-1 exceeded other cultivars in straw yield parameters (i.e., plant height, technical stem height and straw yield. While, Sakha-2 cultivar gave utmost values of stem diameter and number of branches plant^-1 as well as seed yield traits (i.e., number of fruiting branches plant^-1, fruiting zone length, number of capsules plant^-1, 1000-seed weight and seed and oil yields. Seed oil and micro-nutrients (Mn, Fe and Zn) content were highest with Sakha-2 variety. Micro-nutrients foliar spraying at 600ppm/ feddan gave significantly the highest values for all traits two years as compared to zero or 300ppm/feddan. There are two traits, i.e., 1000-seed weight and number of fruiting branches plant^-1 in 2015/2016 year and two ones, i.e., seed yield plant^-1 and number of capsules plant^-1 in 2016/2017 year, were significantly (P≤0.001) participated to variation in seed yield/feddan.