The effect of biogas fermentation product and different npk levels on wheat growth and mineral nutrition

In this study it was aimed to investigate the effectes of incubated biogass waste applied with different dosages of NPK nutrients on wheat growth and mineral nutrition. For this reason biogass wastes were applied to the pots coreresponding to 0, 1.5 and 3 ton/da and left for incubation for 0, 1 and 2 months. After incubation, pots were fertilizert with NPK and seeds were sawn. After 2 months gorwth periods, plants were harvested above the soil in order to make required measurements. After incubation periods it was seen that induvidual affects of factors and their interactions significantly affected the parameters but Ca and Mg concentrations in the soil did not vary with the treatments. Application dosages and long term incubation did not vary soil pH, but EC values increased with both incubation time and dasages. It was seen that treatments had positive effect on examined evailable soil nutrients generally. Application of digastate and incubation periods had a significant affect on plant dry weight under both NPK levels. Dependin on the measurements it can be seen that dry weights increased up to 76 % and 37 % under full NPK and half NPK condiditons, respectivelly. The highest dry weight was measured with the highest dosage under 2 months incubation with full fertilization. In addition, digestate treatments had a positive significant affect on wheat mineral nutritions and removed nutrients from the soil generally. As a result, biogass digastate application postivelly affected available soil nutrients, plants growth and mineral nutrition of wheat.