Consider the following statements:
1. Agricultural soils release nitrogen oxides into environment.
2. Cattle release ammonia into environment.
3. Poultry industry releases reactive nitrogen compounds into environment.
Which of the statements given above is/are correct?

The correct option is 1, 2 and 3.

Let us analyze each statement step-by-step to understand how agricultural operations and livestock contribute to nitrogen emissions in the environment:

Statement 1: Agricultural soils release nitrogen oxides into environment.
This statement is correct. Nitrogenous fertilizers applied to agricultural soils undergo microbial processes such as nitrification and denitrification. During these biochemical cycles, various nitrogen oxides (including nitrous oxide, ${\text{N}}_2\text{O}$, and nitric oxide, $\text{NO}$) are produced and emitted into the atmosphere.

Statement 2: Cattle release ammonia into environment.
This statement is correct. Livestock, especially cattle, excrete urea and nitrogen-containing organic compounds in manure and urine. Microbial breakdown (hydrolysis) of urine urea rapidly converts it into ammonia gas (${\text{NH}}_3$), which volatilizes into the surrounding air and atmosphere.

Statement 3: Poultry industry releases reactive nitrogen compounds into environment.
This statement is correct. Poultry manure contains significant amounts of reactive nitrogen compounds such as uric acid and organic nitrogen. As the manure decomposes, reactive gases including ammonia (${\text{NH}}_3$), nitrous oxide (${\text{N}}_2\text{O}$), and other nitrogen species are emitted into the environment.

Since all three statements (1, 2, and 3) are scientifically accurate and correct, the comprehensive answer is 1, 2 and 3.