why do farmers dont use nitrogen fertilizers
Answers
Explanation:
Loss of nitrogen fertilizer through emissions means more pollution, lower yields and higher costs to farmers. To cut overuse and limit the amount of nitrogen run-off into air and water, farmers could adopt precision technology to calculate the best possible time and amount needed for crops to thrive.
“There are plenty of opportunities for reducing nitrogen losses from agriculture and recovering nitrogen which would otherwise be wasted,” said Sutton. “The first step is to improve the efficiency with which chemical fertilizers are used. This may mean tuning the timing of application or allowing reduced inputs by better matching to plant needs.”
Options for tuning fertilizer inputs range from using “leaf colour charts” or electronic colour sensing, where a deep green colour of leaves means fertilizer is not needed, to using improved fertilizer products that inhibit the main loss pathways.
Answer:
Crops also must compete with soil bacteria hungry for nitrogen. Some of these bacteria transform ammonia-based fertilizers into nitrates, which contribute to harmful algal blooms that can clog fishes' gills and feed dead zones. Nitrates can also pose a health risk to people, in particular, infants.
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