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Humates: A Post-Harvest Solution for Reducing Soil Salinity
Humates are naturally occurring, carbon-rich organic materials
formed from the decomposition of ancient plant and microbial
matter. They contain valuable components like humic and fulvic
acids, which play a crucial role in enhancing soil health and
nutrient availability. As more farmers adopt sustainable practices,
humates are gaining recognition as a useful tool to help improve
soil structure, water retention, and nutrient uptake.
Post-harvest is an ideal time to apply humates, especially
for managing soil salinity. Salt-based fertilizers and drip
irrigation can increase salt accumulation in the soil, creating
an environment that's less conducive to healthy plant growth.
High salinity levels can reduce water absorption, restrict root
development, and ultimately diminish yields. Applying humates
after harvest helps counter these effects by enhancing salt
leaching, especially when combined with winter rains. Humates
have a high cation exchange capacity, which helps buffer salt
ions, facilitate their removal from the root zone, and create a
more favorable soil environment.
In addition to reducing salinity, humates enhance nutrient
availability by acting as natural chelating agents. They complex
with essential nutrients, preventing them from being lost
through leaching and making them more accessible to crops
during the growing season. Incorporating humates into your
post-harvest routine helps growers address salinity issues while
improving nutrient retention, setting the stage for healthier and
more productive future harvests.
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September/October 2024

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