EFFECTS OF DIFFERENT LEVELS OF BIOFERTILIZER Trichoderma harzianum IN SOME THERMODYNAMIC PARAMETERS OF POTASSIUM.
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The Purpose of this study is to investigate the effect of biofertilizer fungus T. harzianum in some thermodynamic parameters of potassium, include activated and activity coefficient ,free energy ∆F , and proportion activity of potassium to activate of calcium and magnesium A . This experiment was conducted in factored experiment which used pots and (Vigna radiate L.) as indicator , plant which planted in sandy clay loam soil . This experiment included 10 treatments , resulted from interaction between factors of sterilized and unsterilized soil , with five levels of inoculums fungi 0.0 , 0.5 , 1.0 , 2.0 , and 3.0 g. in three replicates . The soil samples were taken in two periods the first one before planted , which included soil physical and chemical estimate of some thermodynamics parameters of potassium analysis , valuated the potassium thermodynamic standard , where as the second one was carried out after planted. The results were as follows . significant difference of unsterilized soil comparing with sterilized soil which increased the activity coefficient of potassium to 0.82 and 0.78 respectively, and significant results of unsterilized soil in 3.0 g level comparing of the other treatments which increased the factor of potassium activity to 0.83 . Significant difference of unsterilized soil comparing with sterilized soil , which increased the activity coefficient , and significant difference of potassium were 36.40 , 26.56 mol/L respectively and significant difference of fertilizer levels, to 2.0 , 3.0 g comparing with other fertilization levels of increased the potassium coefficient . Whereas the interaction which significant difference of two treatment of unfertilized soil and two levels fertilizations 2.0 , 3.0 g. comparing with the other treatment were 43.48 , 42.97 mol - L⎯ respectively. The sterilized soil lead to increase the value of negative free energy, comparing with unfertilized soil were −5700 and −5150 cal.mol⎯ respectively. Appearing significant difference between fungus concentrations on free exchange energy values. which were significant difference of two levels 2.0 , 3.0 g comparing with fertilized levels which decreased negative values of free energy exchange of potassium which were −4100 and −4000 cal.mol¯ respectively .As for interaction were significant s of two treatments of unsterilized soil in 2.0 and 3.0 g comparing with the other treatment which were −3900 and −3600 cal.mol¯. The value of ARK were decreased after planted in both sterilized and unsterilized soil to 0.40 and 0.47 mol.L - Respectively, which decreased in unsterilized soil was slightly , comparing with the values of ARK before planted 0.49 mol.L½ were the average of activity ionic of potassium for biofertilized 0.0-3.0 ( 0.37 - 0.51 ) mol.L⎯ ½ respectively .This results of chemical movement voltage of potassium related to chemical movement voltage calcium and magnesium ions in soil . The average of ARK which relatively high values , indicate that proportion of potassium activity to magnesium and calcium were very high . The fertilized by T.harzianum increased potassium contents comparing with calcium and magnesium.The higher values of ARK 0.55 mol.L⎯ ½ resulted from interaction for the soil unsterilized soils in the fifth level of biofertilizer 3.0 g.