Agriculture Reference
In-Depth Information
Fig. 6.2 Mulder
s chart shows some of the interactions between plant nutrients. Interaction: A
decrease in availability to the plant of a nutrient by the action of another nutrient (see direction of
arrow
). Stimulation: An increase in the need for a nutrient by the plant because of the increase in
the level of another nutrient (
dotted line
)
'
(economic yield) to input (fertilisers) for a process or complex system (Crop
Science Society of America
1992
).
Plant nutrients rarely work in isolation. Interactions among nutrients are impor-
tant because a deficiency of one restricts the uptake and use of another. Figure
6.2
shows interactions of major plant nutrients with each other (Khan Towhid Osman
2013
). Numerous studies have demonstrated that interactions between B and other
nutrients, primarily N, P and K, impact crop yields and nutrient efficiency.
For example, for experiments carried out in our research group on groundnut it was
evident that uptake of almost all macro and micronutrients by straw and seeds showed
a linear relationship (
p
0.05) among the different nutrients, which were absorbed by
roots. B at a level of 1 kg ha
1
resulted in significant uptake of macro and
micronutrients from soil to seed and straw. Data strongly support improvement of
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