Field tomatoes, like some other crops, are known to exhibit diminishing yields after the first year of planting. While there is currently no definitive causal attribute for this effect, it has been suggested that pathogens may establish better in cultivated soils, or organic carbon depletion disturbs the ecological balance of the soil, or the consolidation of the soil affects root growth and also diminishes hydraulic conductivity of the soil.
Notwithstanding these issues, conventional wisdom promotes the addition of calcium salts for the purpose of improving hydraulic conductivity, and though it may benefit the soil friability at the surface of application, the desired changes to hydraulic conductivity are, in reality, not achieved which poorly impacts root development and the consequential brix potential.
Given that the water demand for field tomatoes can vary with the depth of developed roots, soil friability is probably the single most important aspect of maintaining strong yields from year to year.
Since achieving clay soil friability is somewhat problematic with the established paradigm, it is perhaps now the time to explore how changes to surface tension and charge balance can provide a new mechanism to enhance hydraulic conductivity and better deploy nutrients as well as soil ameliorants.
Field tomatoes, as well as other clay soil grown crops, could well benefit from the synergistic combination of Aqua-Sil Soil technology and BIOCHAR chemistries. Information may be found on our Festiliser page.
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