EFFECTIVNESS OF SALT-TOLERANT RHIZOBIUM (E1 & F1) INOCULATION AND MINERAL NITROGEN FERTILIZATION ON FABA BEAN PLANTS AND WITHSTAND TEST OF ISOLATE F1 TO PESTICIDAL TOXICITY

Abstract

Applicability of salt-tolerant bacterial isolates (F1 and E1) of Rhizobium leguminosarum biovar viciae was compared with the mineral Nitrogen fertilization on faba bean plants, under saline field conditions. Higher magnitudes of shoot length, dry weight of shoots and roots than control and N-fertilized plants were achieved. Results were more pronounced due to use dual combinations of F1 or E1 with 25 % N-supply. Parameters of N2-fixation, seed yield and its crude proteins of both faba bean cultivars (Nubaria 1 and Sakha 1) were also, enhanced due to superiority of the dual treatments. So, utilization of salt-tolerant rhizobial isolates could be attributed to overcome the harmfull effect of soil salinity on growth, nodulation and seed productivity of faba bean plants. On the other hand, the largest diameter of inhibition zone reached 4.20 cm which representing 46.67 % growth inhibition of Rhizobium which was achieved via 1 g L-1 of Vitavax under laboratory conditions. Slope fitting data of the experimental values showed constant inhibitory effect of Ground-up, Malathion and Vydate with increasing their concentrations against Rhizobia. For Vitavax, sharp ascending slope was resulted; indicating induction of further inhibition with additional dose would be expected.

Response of Faba Bean to Foliar Spraying with Chelated Iron under different Nitrogen Fertilization Treatments in Sandy Soils

“…The favorable effect of applying nitrogen fertilization on seed crude protein percentage of faba bean might be attributed to that nitrogen is a constituent of amino acids, proteins and coenzymes as well as it enhances metabolic processes (Marschner, 1986). Confirming results were illustrated by Osman et al (2010), Sadek (2010), El-Khateeb et al (2012, Abou-Amer et al (2014), Ashoori (2014), Fouda et al (2015) and Adak and Kibritci (2016).…”

Influence of Nitrogen Fertilization and Foliar Spraying with Chelated Iron on Growth and Quality of Faba Bean in Sandy Soils

“…The positive effect of supplying faba bean with nitrogen fertilization on growth and yield quality were emphasized by Diaz and Manrique (1995), Shaaban et al (2006), Fathy et al (2007), El-Howeity et al (2009), Osman et al (2010), Sadek (2010), Bozorgi et al (2011), Abou-Elela and Gadallah (2012), El-Khateeb et al (2012), Ghalwash et al (2012), El-Tantawy and Nawar (2013), Mohamed et al (2013), Abou-Amer et al (2014), Ashoori (2014), Fouda et al (2015), Adak and Kibritci (2016), Abd El-Haleem et al (2019), Basdemir et al (2020) and Elnesairi and Essalem (2020).…”