Nitrogen losses in agricultural areas cause environmental pollution. At the same time, it reduces the yield in crop production. The aim of this study is to investigate the effects of zeolite and nitrogen applications on the development of maize plant. Another aim is to reveal nitrate changes in soil. Everest maize variety was used in the study. Zeolite doses of 0, 125, 250 and 500 kg/da were applied to the soil. Nitrogen doses were applied to the soil at 5, 10, 15 and 20 kg/da. In this study, zeolite and nitrogen applications increased the plant height, cob weight and green forage yield of maize plant statistically. The highest green weed yield was 6563 kg/da in Z3N3 application and the lowest green forage yield was 4021 kg/da in Z0N0 application. Increased nitrogen doses increased the amount of nitrate in soil by significantly 1% and zeolite applications increased by significantly 5%. The results of this study would be beneficial in the application of zeolite to the soil in order to reduce nitrogen losses and to make the plant benefit more from nitrogen.

The concern of utilizing native coraps as forage supplements instead of antibiotics has increased in order to manipulate rumen fermentation.The purpose of current work was to determine effects of co-addition zeolites of and Yucca schidigera (YS) plant containing high level of saponin to sheep feed on plasma Aspartat aminotransferaz (AST), ALT (Alanin aminotransferaz) and Gama glutamil transferaz (GGT) levels. A total of 24 sheep wereusedas 6 of eachgroup. Sheepwas fed foronemonth as control, supplementedwithZeolite (3%), Yuccaschidigera (YS, 1500 ppm) and Zeolite (3%) + YS (1500 ppm) to basal diet. When trial finished, plasma AST, ALT and GGT levels were determined in blood samples taken from all groups. In the study, detected supplement of zeolite and YS did not have an impact on ALT and AST, whereas zeolite additions decreased GGT levels. As a result; zeolite and YS supplementation applied in this study did not have a negative impact liver welfare sheep.