Plant nutritionists across the globe are on
their toes to find ways and means to identify nutrient constraints as early in
standing crop season as possible while dealing with perennial crops.
Exciting progress has been made over the
years, and accordingly, the basis of nutrient management strategy has
experienced many paradigm shifts. While doing so, it is being increasingly felt
to have some diagnostic tool to identify nutrient constraint as and when it
originates by capturing the signals released at sub-cellular level.
On the other hand, conventionally used
diagnostic tools of identifying nutrient constraints such as leaf analysis, soil
analysis, juice analysis, and to some extent, metalloenzyme-based biochemical
analysis, all have been under continuous use and refinement. But despite so
much of genuine efforts worldwide, no one of these alone provides complete
information, except the combined use of leaf and soil analysis, which are used
on a comparatively wider scale.
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