by using fertilizer
Soil nitrates are replaced in various ways. One of the most common ways to replace soil nitrate is by suing synthetic fertilizers.
1. lightning makes nitrates from nitrogen and oxygen in the air. the nitrates then get washed into the soil by rain. 2. animal and plants decompose- depositing organic nitrogen into the soil
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Nitrogen can combine and form nitrates primarily through two processes: biological nitrification and atmospheric nitrogen fixation. In biological nitrification, soil bacteria convert ammonia (NH3) into nitrites (NO2-) and then into nitrates (NO3-) through a series of oxidation reactions. In atmospheric nitrogen fixation, lightning or certain bacteria convert atmospheric nitrogen (N2) into ammonia, which can subsequently be oxidized into nitrates by soil microorganisms.
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Well....river valley has rich soil and so they use that soil to farm or it's because the farmers have no life so the river valley gave them water to drink and grow crops that they don't need
Farmers can maintain soil fertility by practicing crop rotation, where different crops are planted in succession to prevent depletion of specific nutrients. They can also use cover crops to protect the soil from erosion and add organic matter back into the soil. Additionally, utilizing compost and manure as natural fertilizers can help replenish nutrients in the soil and improve its structure.
Farmers can reduce topsoil loss by practicing no-till farming, using cover crops to protect the soil, and implementing contour plowing to reduce erosion. Additionally, practicing crop rotation can help improve soil health and prevent topsoil loss.
Crop rotation was important to the farmers in various ways. This improved the fertility of the soil and also provided them with diverse crops which they could consume and sell among other benefits.
Farmers can avoid soil exhaustion by practicing crop rotation, where different crops are planted each season to maintain soil fertility. They can also implement cover cropping to protect the soil against erosion and improve its nutrient content.
Farmers can change the pH of soil by adding amendments such as lime to raise pH levels or elemental sulfur to lower pH levels. The amount of amendment needed depends on the current pH level and the desired pH range for specific crops. Testing soil pH regularly is important to monitor and adjust pH levels as needed.