Khaled A. Shaban ; Zizy M. Abbas* and Azza Kh. Salem*( 2014). EFFECT OF DIFFERENT SOURCES OF POTASSIUM FERTILIZATION AND BIO FERTILIZER ON SOME SOIL PROPERTIES AND FODDER BEET PRODUCTIVITY UNDER SALINE SOIL CONDITIONSEgypt . J. of Appl. Sci., 29 (12) 1181-1195
Abstract: A field experiment was carried out in El-Rowad village at Sahl El-Hussinia Agriculture Station, El-Sharkia Governorate during the two successive winter seasons 2011/2012 and 2012 /2013. These experiments aimed to study the effect of potassium sulphate, potassium silicate and potassium humate with or without the bio-fertilizer Bacillus circulans to enhance potassium availability on the fodder beet (Beta vulgaris L.) variety Monovert productivity under newly reclaimed saline soil conditions. The results showed that the soil pH and soil salinity (EC (dSm-1) were decreased as affected by potassium sulphate and potassium humate combined with bio-fertilizer. The highest values of available N, P and K in soil were recorded with potassium humate over the two seasons. The effect of different K sources with bio-fertilizer (dissolved K bacteria) on fresh root yield, fresh top yield; dry root yield; dry top yield; length and diameter of root (cm) were significantly increased over the two seasons. Concerning, the highest root crude protein contents (%) and digestible crude protein (DCP %) were obtained from potassium humate and potassium silicate combined with the bio-fertilizer at a rate of 4 ml/L K2O compared with other treatments. These two traits were responsible for the most elements in the soil for fodder beet yield. It is adds essential material necessary for K- sources, thus improving root growth and enhancing the soil's ability to retain and not leach out vital plant nutrients.
Keywords: (Saline soil, Potassium humate, Potassium sulphate, Potassium silicate, potassium dissolved bacteria, fodder beet.)
