Improving Tolerance of Faba Bean during Early Growth Stages to Salinity through Micronutrients Foliar Spray

Abstract

Salinity, either of soil or of irrigation water, causes disturbances in plant growth and nutrient balance. Previous work indicates that applying nutrients by foliar application increases tolerance to salinity. A pot experiment with three replicates was carried out in the green house of NRC, Cairo, Egypt, to study the effect of micronutrients foliar application on salt tolerance of faba bean. Two concentrations of a micronutrient compound (0.1% and 0.15%) were sprayed in two different treatments prior to or after the salinity treatments. Levels of NaCl (0.00-1000-2000-5000 ppm) were supplied to irrigation water. Results indicated that 2000 and 5000 ppm NaCl inhibited growth and nutrient uptake. Spraying micronutrients could restore the negative effect of salinity on dry weight and nutrients uptake, when sprayed either before or after the salinity treatments. It is suggested that micronutrient foliar sprays could be used to improve plant tolerance to salinity.

EFFECT OF MICRONUTRIENTS FOLIAR APPLICATION ON PRODUCTIVITY AND QUALITY OF SOME FABA BEAN CULTIVARS (Vicia faba L.)

“…The increase of yield components due to micronutrients application might be due to their positive effects on assimilates translocation, activation of photosynthetic enzymes, chlorophyll formation and improvement of plant growth (Farag et al 2014). The meliorating effect of micronutrients was also reported by many investigator among of them Mahady (1990), El-Fouly et al (2010), Bozorgi et al (2011), Abd El-Rzek et al (2013 and Farag et al (2014).…”

“…Abdel (2006) indicated that spraying faba bean plants with 100 mg L -1 Fe EDDHA significantly increased seed yield by (19.75%). El Fouly et al (2010) concluded that foliar application of micronutrients (mixture of, Fe, Mn, Zn) have a positive effect on growth and nutrients uptake of faba bean plants irrigated with saline water either before or after salinity treatments. Ali (2011) stated that that foliar application can be considered as one of the best method for micronutrients application.…”

ASCORBIC ACID FOLIIAR SPRAY COUNTERACTING EFFECT OF SALINITY ON GROWTH, NUTRIENTS CONCENTRATIONS, PHOTOSYNTHESIS, ANTIOXIDANT ACTIVITIES AND LIPID PEROXIDATION OF BEAN (<i>PHASEULUS VULGARIS</i> L.) CULTIVARS

“…Ascorbic acid application (100 ppm) increased the concentration of K, Ca, Mg, Fe, Mn and Zn. Ascorbic acid spray improved the performance of root growth and prevented the nutritional disorders and consequently caused increases the uptake of nutrients (El-Fouly and Salama, 1999;El-Fouly et al, 2002;2010). It has been found that ascorbic acid strongly inhibited Na + and Cl − accumulation of salt stressed maize plants, but stimulated N, Mg, Fe, Mn and Cu concentrations.…”

“…When plants are subjected to environmental stresses, Reactive Oxygen Species (ROS) are generated in response to stress condition (Dat et al, 2000). Salinity causes numerous physiological and biochemical changes in plants like reduced leaf size, stem extension, root proliferation, reduced water use efficiency (Farooq et al, 2009) Alteration in metabolic activities (El-Fouly and Salama, 1999), inhibition Science Publications AJABS of enzymatic activities (Frova et al, 1999) ionic imbalance and disturbances in solute accumulation (El-Fouly et al, 2010) or a combination of all these factors. Excess of ROS causes phytotoxic reactions such as lipid peroxidation, protein degradation and DNA mutation (Wang et al, 2003).…”

Growth, Nutrients Uptake and Grain Yield of Some Wheat Cultivars as Affected by Zinc Application Under Sandy Soil Conditions

“…This might be in part attributed to the favorable effect of zinc on vegetative plant materials which in turn increase P, K, Fe and Zn uptake by plants (Marschner, 1995). Micronutrients improved the performance of root growth and prevented the nutritional disorders and consequently caused increase in the uptake of nutrients (El-Fouly, et al 2010).…”