The transformations of urea nitrogen as a
result of rapid hydrolysis and nitrification in
soil gives rise to high level of plant
available nitrogen which are in excess of
requirements at early stages of pant
growth. This leads to considerable losses
of soluble nitrogen from the active root
zone and development of nitrogen
deficiency in crop as well as environmental
pollution on account of leaching of nitrates
and nitrous oxide emissions. While use of
synthetic nitrification and hydrolysis
inhibitors has exhibited good results under
laboratory conditions, their field
evaluations have not been cost effective. In
this found extremely promising and this
paper discusses recent research on these
aspects. Based on this research several
neem based urea-coating agents have
been commercialised in India.
result of rapid hydrolysis and nitrification in
soil gives rise to high level of plant
available nitrogen which are in excess of
requirements at early stages of pant
growth. This leads to considerable losses
of soluble nitrogen from the active root
zone and development of nitrogen
deficiency in crop as well as environmental
pollution on account of leaching of nitrates
and nitrous oxide emissions. While use of
synthetic nitrification and hydrolysis
inhibitors has exhibited good results under
laboratory conditions, their field
evaluations have not been cost effective. In
this found extremely promising and this
paper discusses recent research on these
aspects. Based on this research several
neem based urea-coating agents have
been commercialised in India.
Nitrogen ranks first amongst the nutrients required by crop plants due to its very
significant role in vital physiological functions. Urea is the major source of nitrogen to
crop in most parts of the world due to its high nitrogen content.
significant role in vital physiological functions. Urea is the major source of nitrogen to
crop in most parts of the world due to its high nitrogen content.
Continuous and excessive use of chemical pesticides aimed at controlling pest
population have resulted in serious ill effects such as development of insect
resistance, insecticide induced resurgence of insect pests, toxicity to non-target
organisms such as natural enemies of insects, human beings and environmental
persistence. The present paper deals about effective and environmental friendly
coherent pest management programme based on neem preparations. Owing to their
unique mode of actions on the target, in sect species, multiplicity of chemically active
constituents and faster biodegradability and lack of persistence of residues, safety to
non target organisms, ease of processing and plentiful availability, the use of neem
based preparations for the purpose of plant protection are discussed.
population have resulted in serious ill effects such as development of insect
resistance, insecticide induced resurgence of insect pests, toxicity to non-target
organisms such as natural enemies of insects, human beings and environmental
persistence. The present paper deals about effective and environmental friendly
coherent pest management programme based on neem preparations. Owing to their
unique mode of actions on the target, in sect species, multiplicity of chemically active
constituents and faster biodegradability and lack of persistence of residues, safety to
non target organisms, ease of processing and plentiful availability, the use of neem
based preparations for the purpose of plant protection are discussed.
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