ÖzetTarımsal üretimde toprağa uygulanan azotun bitkiler tarafından alınan miktarı üretim yönetim uygulamaları ve ürün çeşitlerine göre değişmekle birlikte ancak yarısı kadardır. Bitkiler tarafından kullanılamayan bu miktar ciddi ekonomik kayıp oluşturmakla birlikte önemli çevre ve sağlık problemlerine neden olmaktadır. Bu çalışma ile bitkisel üretimde azot alım etkinliğinin düşüklüğü ve reaktif azotun çevre üzerine olumsuz etkilerine dikkat çekilerek azot alım etkinliğini artırmaya ve reaktif azotun çevreye olan olumsuz etkilerini azaltmaya yönelik daha önce yapılmış olan çalışmalar ışığında çözüm önerileri sunulması amaçlanmıştır.Anahtar Kelimeler: Azot Alım Etkinliği, Reaktif Azot, Çevre Nitrogen Uptake Efficiency in Plant Production and Negative Effects of Reactive Nitrogen on Environment Muhammet Karaşahin Karabük University, Eskipazar Vocational School, Plant and Animal Production Division AbstractIn agricultural production the amount of plant uptake of applied nitrogen to soil varies according to production management practices and crop species however it is only half. The amount which cannot be used by plants create serious economic losses and causes significant environmental and health problems. The aim of this study is to take attention to lowness of nitrogen uptake efficiency in plant production and negative effects of reactive nitrogen on environment and offers resolution advisory to increase nitrogen uptake efficiency and to reduce the negative effects of reactive nitrogen on environment in the light of earlier studies that are conducted.

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Bu çalışma TÜBİTAK tarafından desteklenen 114O702 No'lu projenin bir bölümünden oluşmaktadır.

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This research was conducted to determine the effects of different seaweed doses on yield and nutritional values of hydroponic wheatgrass (Triticum aestivum L.) juice in the climatization chamber of Karabuk University, Eskipazar Vocational School, Department of Crop and Animal Production between the dates of 15. 01.2015 and 15.06.2015. In the research, four different seaweed doses (Control; 0, D1; 150, D2; 300, D3; 450 and D4; 600 ppm) and control were applied to irrigation water and their effects on the content of biomass rate, biomass and grass yield, grass juice yield and pH, plant height and root length, biomass and grass dry matter rate, grass juice energy and macronutrient values (protein, carbohydrate, fat, dietary fiber and ash) were analysed. According to the results, while the highest biomass and grass yield, plant height values were obtained from D1, D2, D3 and D4 treatments, the highest grass juice yield and root length were obtained from D3 treatment. The highest pH, grass dry matter content was obtained from control treatment. Seaweed dose treatments were not had influence on grass juice energy values. However, the rise in the grass juice yield was caused a rise in the total energy values in the unit area. D3 treatments can be recommendable to achieve the highest grass juice yield.