Effect of Mineral Nitrogen Fertilizer and Foliar Application of Yeast Extract on Some Flax Cultivars

El-Shafey Amina, I.M. Sallam and M.M. El-Hawary

Background and Objective: Flax plays an important role in the national economy because it has many uses, seeds for oil and stems for fiber. Mineral nitrogen fertilizers and foliar application of yeast extract are important for growth and yield. Yeast extract as a foliar application on plants is very safe for humans, animals and the environment. This study aimed to explore the effect of different mineral nitrogen fertilizer sources with or without foliar application of yeast extract on the growth, yield and seed quality of some flax cultivars. Materials and Methods: The effect of mineral nitrogen fertilizer with or without foliar application of yeast extract on growth and yield were investigated and chemical analysis for chlorophyll, some endogenous hormones, NPK, oil, protein and total carbohydrates were achieved. Results: Sakha 5 cultivar gave the highest number of fruiting branches per plant, number of capsules per plant, seed yield per plant and total chlorophyll content. Also, it had the highest oil and total carbohydrates content for flaxseed in the 1^st season only. Sakha 3 had the tallest plant height, technical length and the heaviest fiber yield (t ha^–1) followed by Sakha 1. Also, results revealed that 75% urea with yeast extract had a superior effect on most studied characters followed by adding 100% urea. Conclusion: It’s concluded that flax plants received 75% mineral nitrogen fertilizer (especially urea) with foliar application of yeast extract gave the highest productivity and seed quality.

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