Leaching Index Ratings: 1. An LI less than 2 inches indicates that the potential for leaching below the root zone is low. 2. An LI between 2 and 10 inches may contribute to soluble nutrient leaching below the root zone. 3. An LI greater than 10 inches will contribute to soluble nutrient leaching below the root zone.
28/07/2015· July 28, 2015. Nitrogen will leach when soil water content becomes greater than the maximum soil water holding capacity, as excess water will drain below the root zone carrying within it soluble nitrogen, mostly as nitrate.
The leaching potential under CT, however, can be increased, which has implications for groundwater contamination by nitrogen and the number of pesticides that are highly mobile. In addition, runoff volume may not decrease in the presence of traffic/tillage induced compaction, poor internal drainage, or the presence of fragipans and subsurface clay horizons.
The nitrogen leaching estimation model is based on the concept that the annual N leaching loss is related to the annual average amount of potentially leachable N in the soil, and the annual drainage through the soil. The potentially leachable N is determined by the sum of annual flux rates of the major N
Nitrate Leaching Nitrate leaching is a naturally occurring process, it occurs when nitrate leaves the soil in drainage water. Nitrate is soluble and mobile. It is no problem when it is within the root zone, but once it gets into the ground water and other fresh
As water moves down through the soil, nitrogen can be carried with it. This is called leaching . Figure 1 Heavy rainfall can cause nitrates to move down through the soil, a process called leaching . Forms of nitrogen that leach. Nitrate is primarily the form of nitrogen that is leached. Nitrates may originate from manures, the decay of plants and other
Leaching of nitrogen from subtropical soils as affected by nitrification potential and base cations
work with farmers and growers to reduce nitrate leaching. The NLT calculates nitrate leaching using farm land use and management data that the user has entered, together with data on
nitrogen. on all sites. The leaching of nitrogen as nitrate from the soil profile poses a potential risk to groundwater quality in Tennessee. Losses of nitrate nitrogen also cost you money! The . potential. for nitrate nitrogen to leach through an agricultural soil depends on several
June 10, 2020
Copyright © 2020.Company name All rights reserved.