Short term effects of chemical fertilizer, seaweed compost and zeolite mineral on bean yield and physicochemical properties of the soil

The present study, used chemical fertilizer, brown algae compost, and zeolite, carried out in the field of Giresun Hazelnut Research Center between May – November 2014 in pots according to randomized blog design as three replicate each. Treatment groups were consist of eight different combinations as follow; G1-Control, G2-Zeolite, G3-Compost, G4-Chemical Fertilizer, G5-Zeolite+Compost, G6-Zeolite+Chemical Fertilizer, G7-Compost+ Chemical Fertilizer, G8-Compost+Zeolite+ Chemical Fertilizer. The brown algae (Cystoseira sp.) was used as compost material. These combinations were applied to green bean plants (Phaseolus vulgaris). The beans were seeded by hand to arrange planting depth of 5-6 cm and 20 seeds/m2 . Except control group, each treatments were added fertilizers as 50 g zeolite, 50 g compost, and 25 g chemical according to treatment design. Half of the chemical fertilizers were added at seeding time and the rest after two weeks. Collected soil samples were analyzed right after harvest, the greatest values of treatment groups were determined as; Carbon% G1: 5.08, nitrogen% G3: 0.09 , sodium G5: 139 ppm, potassium G6 247 ppm, magnesium G2: 1865 ppm, calcium G6: 8.33 ppm, manganese G2: 359 ppm, iron G6 : 16070 ppm, cobalt G6 and G7: 7,91 ppm, copper G2: 17.5 ppm, zinc G8: 28.0 ppm, selenium G7: 4,17 ppm, cadmium G5: 0.08 ppm, lead G4: 5,31 ppm. The greatest harvest value as g/m2 was obtained from zeolite only group G2 with 273 while the lowest was obtained from Compost only group G3 with 113 g/m2, obviously showing the effectiveness of zeolite only application moreever, also thinking that better results may get if the present study run for longer period.