Plantwise Factsheets for Farmers
Recognize the problem
Stresses such as soil salinity, pathogens and air pollution induce their
own characteristic set of visual symptoms. These symptoms closely resemble
those of nutrient deficiency. Pathological symptoms can often be separated from
nutritional symptoms by their distribution in a population of affected plants.
If the plants are under a nutrient stress, all plants of a given type and age
in the same environment tend to develop similar symptoms at the same time. To
study the exact cause of the disease, plant parts are to be examined for the
nutritional problem for deficiency
requirement of the crop
of nutrients for the recommendations
deficiency symptoms can be a very powerful diagnostic tool for evaluating the
nutrient status of plants. Many of the classic deficiency symptoms such as tip
burn, chlorosis and necrosis are characteristically associated with more than
one mineral deficiency and also with other stresses that by themselves are not diagnostic
for any specific nutrient stress. Their detection is extremely useful in making
an evaluation of nutrient status. The nutrients used by and available to crops
must be balanced.
nutrients should be provided to the plant
advise the recommendation, the mature plant parts should be sent for analysis
growth stage and time are the most crucial things in plant analysis. Plant parts
that correlate with the yield should be selected.
methods are adopted to prepare plant samples for analysis. These are total leaf
analysis, pot culture and tissue testing.
plant samples should be well processed through standard method to avoid any
The recommendations in this factsheet are relevant to:
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