$58.$ The total global nitrogen cycle is affected by the use of synthetic ammonia in agriculture. What is one significant way this impacts the environment?

$-$ A$)$ Decreases atmospheric nitrogen levels

$-$ B$)$ Reduces global carbon footprints

$-$ C$)$ Contributes to eutrophication in water bodies

$-$ D$)$ Increases soil organic carbon

$59.$ When calculating the application rate of a phosphate fertilizer, a soil test indicates a phosphorus deficit of $10$ kg$/$ha$.$ If the farmer uses DAP $($Diammonium Phosphate$)$ with $46\%$ P$$O$,$ how much DAP is needed to meet the soil phosphorus requirement, assuming the conversion factor from P$$O$$ to P is $0\mathrm{.}44?$

$-$ A$)49\mathrm{.}5$ kg

$-$ B$)100$ kg

$-$ C$)150$ kg

$-$ D$)200$ kg

$60.$ A common practice in agriculture is to apply lime to fields where ammonium$-$based fertilizers have been used extensively. What is the primary reason for this?

$-$ A$)$ To increase soil nitrogen content

$-$ B$)$ To counteract soil acidification

$-$ C$)$ To reduce soil potassium levels

$-$ D$)$ To enhance soil microbial diversity

$61.$ Considering the nitrogen use efficiency $($NUE$)$ in crops, if a particular variety has an NUE of $50\%$ and the farmer applies $120$ kg of nitrogen per hectare, how much of the applied nitrogen is actually utilized by the crop?

$-$ A$)30$ kg

$-$ B$)60$ kg

$-$ C$)90$ kg

$-$ D$)120$ kg