BÜRÜN, Betül Muğla University - Faculty of Science - Department of Biology, Turkey , TUNA, A. Levent Muğla University - Faculty of Science - Department of Biology, Turkey , YOKAŞ, İbrahim Muğla University - Ortaca Vocational School, Turkey , ÖZKUL, Hülya Ege University - Faculty of Agriculture - Department of Feeds and Animal Nutrition, Turkey

EFFECT OF ALKALINE STABILIZED DOMESTIC WASTEWATER ON SOIL PROPERTIES AND YIELD, QUALITY AND NUTRITION OF SILAGE MAIZE

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Reuse of domestic wastewater that does not contain heavy metals or pathogenic microorganisms, as irrigation water is a significant method in terms of water conservation all around the world. In this field trial which was conducted over two years, the domestic wastewater (DW) of Muğla City after being alkaline stabilized was used to irrigate maize plant for silage and the interaction of soil and water was also controlled during the trial. Alkaline stabilized domestic wastewater (ASDW) was applied in four different doses as 150 ton ha^-1, 300 ton ha^-1, 450 ton ha^-1 and 600 ton ha^-1. During the vegetation stage, periodic physical observations were done and soil and plant samples were collected in order to evaluate the state of nutrition and effects of alkaline stabilized domestic wastewater. In the analysis, it was determined that pH and salt content of the soil didn’t change and the contents of Ca and Mg elements increased. Chemical composition, in vitro metabolic energy values and pH of silage feedstuffs samples were investigated. In comparison with control, alkaline stabilized domestic wastewater treatment increased dry matter, crude protein, crude fat (as ether extract) and thus the metabolic energy (ME) content of feedstuffs. For silage yield, crude protein and metabolic energy, the best results were obtained with 600 ton ha^-1 application. According to the results, after alkaline stabilized domestic wastewater application to soil, which is a finite natural resource, soil was not negatively affected, and the quality and physiological features of maize for silage were affected affirmatively. In conclusion, alkaline stabilized domestic wastewater can be reused as a source of irrigation water and fertilizer for agricultural purposes.

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Alkaline stabilization , Domestic wastewater , Land application , Maize

Anadolu Journal Of Agricultural Sciences

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