Jacklin G. Sadek(1) and Amany M. Sallam(2) ( 2012). EFFECT OF GRAINS SOAKING WITH MICRONUTRIENTS AND FOLIAR NUTRITION WITH HUMIC ACID ON THE PRODUCTIVITY AND QUALITY OF BARLEY PLANT UNDER SALINE SOIL CONDITIONSMinufiya J. Agric. Res. Vol.37 No. 4(2):1049-1068
Abstract: Two field experiments were carried out during two successive seasons in 2010- 2011 and 2011- 2012 at Gelbana Village Sahl- El Tina Plane (North Sinai). The study aimed to identify the integrated effect of micronutrients applied as soaking treatments, likewise foliar spray with humic acid at either individually or together on Egyptian barley variety Giza 123. Barley grains were soaked with micronutrients in the form of EDTA compounds i-e Zn- EDTA (14%), Mn- EDTA (12%), Fe- EDTA (13%) and Cu-EDTA (12%) at a rate of 300 mg/ l for each nutrient ( at a rate of liter/kg grains) either singly or in combination for 24 hour before planting. Also plants were sprayed with humic acid at a rate of 300 mg/l two times, after 35 days and 75 days form sowing at a rate of 400 l/fed.. The obtained results showed the effective action of Zn, Mn, Fe and Cu in minimized the salt- induced nutrient deficiency and give high response to such plants grown under stress conditions. In this respect, the efficiency of Zn, Mn, Fe and Cu combination was more effective in increasing significantly yield and its components, since the percentage of increases in grains yield reached 45.44 and 45.54% for the first and second seasons, respectively as comparing with the control treatment. Corresponding increases significantly in macronutrients (nitrogen, phosphorus and potassium) and micronutrients (zinc, manganese, iron and copper) concentrations and uptake as well as crude protein % and protein yield in grains and straw. Such increases were accompanied by corresponding significant decreases concentration and crude protein % in straw throughout the two seasons. Significant increases were found in germination percent shoot length, radical length, as well as fresh and dry weights of seedlings for two growing seasons. The obtained data also indicated that foliar nutrition with humic acid alleviates the adverse effect of salinity and induced significant improvements all studied parameters throughout the development stages of growth. Data illustrated that joint addition of humid acid with micronutrients gave high increases significantly in all prior studied parameters. The combined treatment of Zn+ Mn+ Fe+ Cu+ humic acid gave the highest significant increases not only yield and its attributes and nutrients concentrations and uptake but also on crude protein %, protein yield in grains in addition on percentage of germination, shoot and radical length, also fresh and dry weights of seedlings for the two growing seasons of barley plants, Giza 123 cultivar.
Keywords: (Barley plants, Micronutrients (Zn, Mn, Fe and Cu), Humic acid and Soil salinity.)
