16
Feb
The salt of the earth. When salt reaches toxic levels it has a negative influence on crop yield.
Solutions include improving the efficiency of irrigation channels capturing and treating salty drainage water setting up desalting plants and increasing the amount of water that gets into aquifers.
How to prevent soil salinization. Here are some typical methods to prevent soil salinization. Optimize irrigation reduce salty water usage implement drip irrigation use desalinated recycled rain-harvested. Add organic matter and manure to keep moisture and reduce irrigation.
A practical approach in order to prevent salinity buildup early enough is sampling the soil 5 times over a growing period of 8 months a test every 6 weeks or so. It is recommended to do at least one water analysis as well. The tests will indicate any change in soil content allowing you to adjust the fertilization and irrigation regimen as needed.
Soil salinization usually occurs in arid areas In these areas soluble salt ions accumulate in the soil. In these areas where plant growth requires irrigation the Evaporation and transpiration process leaves salt in the soil. In the beginning salts will reduce.
Saline soils cannot be reclaimed by any chemicals conditioner or fertilizer. Reclamation of these soils consists of simply applying enough high-quality water to leach the soil thoroughly. The water applied should be low in sodium but can be fairly saline 1500 to 2000 ppm total salt as this helps to keep the soil permeable during the leaching process.
Generally about 12 inches of water are required to. Managing soil water is the key to reducing salt content in the soil. Augustin suggests the following six strategies.
Test soil for electrical conductance EC. Salt raises the EC. Make a site-specific management plan.
Test for EC in zones radiating out from the bulls-eye of the problem area where the soil is crusted with white. Plant species of crops or forages with the salt tolerance to adapt. 2 Methods to Prevent Soil Degradation.
3 Importance of Preventing and Stopping Soil Degradation. Salinization is the process by which salts accumulate in the soil. When salt reaches toxic levels it has a negative influence on crop yield.
The extent of this problem must not be underestimated. Right now at least 8 of irrigated agricultural land worldwide is affected by salinization. Extent of land salinized by irrigation 2011.
The salt of the earth. Hazardous for food production 2002. Often it results from replacing deep-rooted native vegetation with shallower-rooted crops and pastures which take up less water.
Unused rainwater leaks into the ground causing groundwater to rise and dissolve salts stored deep in the soil. The salty water may. Soil salinity can be reversed but it takes time and is expensive.
Solutions include improving the efficiency of irrigation channels capturing and treating salty drainage water setting up desalting plants and increasing the amount of water that gets into aquifers. The salinity threshold ECt of the majority of vegetable crops is low ranging from 1 to 25 dS m1 in saturated soil extracts and vegetable salt tolerance decreases when saline water is used for irrigation. The objective of this review is to discuss the effects of salinity on vegetable growth and how management practices irrigation drainage and fertilization can prevent soil and water salinization and mitigate.
Doing so can prevent negative effects in multiple facets. Increasing funding for cheaper and quicker de-salinization methods is necessary and will ensure. Generally there are four ways to prevent and remediate soil salinization in below.
Control irrigation water volume. Apply minimal levels of irrigation water volume and keep the well-drained soil condition. Grow Salt Tolerant Crops.
Its one of the best ways to deal with a soil salinity problem especially if you are starting. Plant salt-tolerant cash crops such as barley sunflowers or canola. Not only are they.
In the beginning the salt will reduce soil productivity and limit crop yields. As the salt content increases it kills the vegetation and soil microorganism. As a result The perfectly fertile soil will become completely barren.
Why Does Soil Salinization Occur. The salts prevent plant roots from making use of water in the soil. Plant roots absorb water from the soil through the process of osmosis.
Osmosis moves water from an area of lower salt higher water concentration to an area of higher salt concentration. Irrigation Management in Coastal Zones to Prevent Soil and Groundwater Salinization 23 irrigation water should not reach the groundwater so that leaching of nitrates is avoided and waste of.