urea is the most common form of nitrogen fertilizer used in sugar beet cultivation. urea has a high solubility and its losses are high and consequently its efficiency is low. it is supposed that urea solubility can be limited and its efficiency can be increased by using slow-release nitrogen fertilizers. by conducting an experiment in three important sugar beet cultivation areas of khorasan pro...

One effort to reduce nitrogen loss is make the fertilizer in a form of slow-release. SRF method can be done conventionally based on centrifugal force. Nitrogen release from UZA fertilizers generally decreased during incubation period. Urea slow-release combination zeolite and humic acid applied soil media rate nitrate release. In this case, it necessary identify effect ready modifying acid. Inc...