Saline Soil Management to Improve its Fertility and Productivity by some Agricultural Practices Application

Abstract

A field study was conducted during winter season of 2015/2016 at saline soil of Sahl El-Tina, North Sinai Governorate, Egypt, to study the effect of agricultural practices (raised bed system, nitrogen fertilizer rates and seed soaking in concentrations of cobalt solution) whether alone or combined with both on improving the fertility of saline soil and its productivity for faba bean (Vicia faba L. cv. Nobaria 1). Results declared that, the decreasing in soil salinity values (EC) was more clearly in the raised bed shoulder than furrow ridge with increasing the number of irrigations. All growth parameters and yield component were increased to highest percentage at using the raised bed compared to furrow row system. Also, each of seed and straw yield (kg fed -1 ) were increased significantly with gradually increasing the levels of N application up to 100 % combined with 12 mg L -1 of cobalt, but with increasing the concentration in soaking solution up to 18 mg Co L -1 gave negative significantly effect on all the growth parameters studied. Macronutrients contents in faba bean plants were significantly increased with raised bed system, they reached to 34.3, 36.7 and 37.9 % for N, P and K, respectively compared to furrow row system. Also, they were increased with increasing each of N application rates combined with Co concentration (12 mg L -1 ) then decreased with the highest concentration of Co (18 mg L -1 ). The residual available N in soil rhizospher was significantly increased at using all agricultural practices as individual factors. In contrast, there are insignificantly effects of these practices on P and K available contents in soil rhizosphere. Cobalt concentration in seed soaking solution has no effect on increasing its content in plant or soil.

Effect of Rhizobium inoculant, Nitrogen Starter and Cobalt on Stimulation of Nodulation, N Fixation and Performance of Faba Bean (Vicia faba L.) Grown under Salinity Stress

“…Also, the presence of cobalt in the zone of high salinity roots spread works to reduce the harmful effect of salinity and thus increase the ability of plants to tolerate salinity. The foliar spraying of cobalt gave more vigorous plant growth as a visual score and best performance compared with tap water due to its effective role in increasing and stimulating growth in different physiological stages as was observed in a previous study (Atiia et al, 2016 andAmer et al, 2018).…”