Cultivars Response of Flax ( Linum usitatissimum L.) to Different Nitrogen Sources in Dry Environment

Abstract

T WO YEARS field experiment were carried out at Demo experimental farm, Faculty of Agriculture, Fayoum University, Egypt in 2015/16 and 2016/17 seasons to examine the effect of nitrogen sources as soil application on straw and seed yields as well as seed quality of flax. A split-plot arrangement with three replications was used. Three cultivars of flax i.e., Sakha-1, Sakha-2 and Giza-9 occupied the main plots. While, N-sources, i.e., ammonium nitrate (23.5 %), urea (46.5%) and ammonium sulfate (20.6%) distributed in the sub-plot. The obtained results clarified that Sakha-1 gave the highest straw yield and its attributes mean values i.e., plant height, technical stem length and straw yield plant -1 . While, Sakha-2 gave the highest mean values for number of branches plant -1 and stem diameter. In addition, Sakha-2 cultivar was exceeded the other two cultivars with regard to seed yield and related traits i.e., fruiting zone length, no. of fruiting branches plant -1 , No. of capsules plant -1 , 1000-seed weight and seed and oil yield fed -1 . Ammonium nitrate followed by ammonium sulfate as N-sources gave the highest straw and seed yields and its related traits when compared with urea. Thus, the recommendations of this study are cultivating Sakha-2 variety and fertilized by ammonium nitrate as N-sources.The obtained results of regression analysis of seed yield indicated that, there are two traits i.e. seed yield plant -1 and No. of capsules plant -1 in the first season and Zn mg 100g -1 in the second one, were significantly (P≤ 0.001) contributed to variation in seed yield feddan.

Effectiveness of Sowing Dates and N Rates on Productivity of Two Flax ( Linum usitatissimum L.) Cultivars

“…The superiority of Sakha-1 in straw yield ha -1 may be due to the increase in plant height, technical length, number of branches plant -1 and straw yield plant -1 . These results are in agreement with those obtained by Gallardo et al (2014) (2018) and Emam (2019).…”

“…al. (2015), Raundal et al (2015), El-Borhamy (2016), El-Shafey & Hassan (2016) Rashwan et al (2016), Sadi et al (2017), Jana et al (2018), Sarkees & Mahmood (2018) and Emam (2019). Nitrogen is the most imperative element for perfect the plant outgrowth and development.…”

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

“…The superiority of Sakha-2 may be due to the highest mean values of number of fruiting branches plant -1 (7.33, 7.21), fruiting zone length (31.27, 30.28cm), number of capsules plant -1 (22.11, 21.67), seed index (9.63, 9.36g) and seed yield plant -1 (1.88, 1.86g) in the 1 st and 2 nd season, respectively. The same trend was reported by Gaffer et al (1985), Sorour et al (1992) Emam (2019) who decided that the flax genotypes varied in production of seed yield. These results cleared that the variability among tested flax genotypes which may be predictable due to the differences of these genotypes in habits of growth, origin, genetic constituent high variation and effect of the environmental conditions of tested genotypes under new soil.…”

“…The superiority of this cultivar may be fit to good adaptation in newly reclaimed soil. The differences in seed chemical composition among flax cultivars were detected by many investigators (Khalifa et al, 2011;Bakry et al, 2012;Homayouni et al, 2013;Gallardo et al, 2014;Bakry et al, 2015;El-Shafey & Hassan, 2016;Sadi et al, 2017;Emam, 2019). Table 6 cleared that 600ppm micro-nutrients foliar application resulted in an increase on seed Mn, Fe and Zn concentration by 61.77, 54.44 and 44.68% in the 1 st season and by 54.07, 47.70 and 39.97% in the 2 nd one with compared to the control treatment.…”

“…This shortage could be depressed by raising yields per unit area by availability nutrition requirements especially micro-nutrients in order to flax genotypes gave expected yields in new reclaimed soil. In Egypt, many studies stated that many flax genotypes can successfully grow under newly reclaimed soil conditions (Kandil et al, 2008;Bakry, 2009;El-Seidy et al, 2015;Nawar et al, 2017;Emam, 2019). Many investigators found statistical differences among flax genotypes related straw,seed and oil yields per unit area as well as flax seed quality (Khalifa et al, 2011;Bakry et al, 2012;Homayouni et al, 2013;Gallardo et al, 2014;Bakry et al, 2015;El-Shafey & Hassan, 2016;Sadi et al, 2017;Emam, 2019).…”