An important application of neem products in agriculture is their ability to regulate nitrogen
release from nitrogenous fertilizers. A considerable effort has gone in field evaluation of
neem cake and associated developed products as an organic source of plants nutrients.
The chapter on its significance in soil fertility and plant nutrition is an update of information
on its role in nutrient substitution and in improving the use efficiency of nitrogenous fertilizers.
release from nitrogenous fertilizers. A considerable effort has gone in field evaluation of
neem cake and associated developed products as an organic source of plants nutrients.
The chapter on its significance in soil fertility and plant nutrition is an update of information
on its role in nutrient substitution and in improving the use efficiency of nitrogenous fertilizers.
The bioactivity of neem oil has internationally
received more attention than any other
aspects of neem research. However, the
bioefficacy will be only as precise and
reliable as the text method used for its
determination. A chapter on bioefficacy
evaluation methods provides an appraisal of
techniques employed for the bioassay of
neem products against insects, nematodes
and plant pathogens and for neem’s medical
applications. In the case of pesticidal activity,
the evaluations have to be done differently
than with the conventional pesticides.
received more attention than any other
aspects of neem research. However, the
bioefficacy will be only as precise and
reliable as the text method used for its
determination. A chapter on bioefficacy
evaluation methods provides an appraisal of
techniques employed for the bioassay of
neem products against insects, nematodes
and plant pathogens and for neem’s medical
applications. In the case of pesticidal activity,
the evaluations have to be done differently
than with the conventional pesticides.
Over 300 insects species, besides a large
number of nematodes and other plant
pathogens are already reported to be
controlled by various neem products. Neem
exerts behavioural, physiological and
biochemical effects on insects. Besides, the
mode of action of azadirachtin has been
extensively investigated against insects.
Therefore, chemoreceptory, endocrine and
the other physiological mechanisms of its
action have been briefly overviewed and
reported in a chapter of this title for the
benefit of basic researches in this area.
number of nematodes and other plant
pathogens are already reported to be
controlled by various neem products. Neem
exerts behavioural, physiological and
biochemical effects on insects. Besides, the
mode of action of azadirachtin has been
extensively investigated against insects.
Therefore, chemoreceptory, endocrine and
the other physiological mechanisms of its
action have been briefly overviewed and
reported in a chapter of this title for the
benefit of basic researches in this area.
The nematodes have normally been controlled by applying neem products as soil
amendments. Against other plant pathogens, the information is rather scanty. Nevertheless,
the activity against various pests is established and this has been documented in separate
chapters. Because of the compatibility of the neem products with the plant and animal
environment, non-development of resistance to them, their harmless nature against the
non-target organisms, lack of any residue problem with their use etc., neem materials are
excellent inputs for use in the integrated pest control programmes. The issues relating to its
use in IPM are covered in the chapter on the subject.
amendments. Against other plant pathogens, the information is rather scanty. Nevertheless,
the activity against various pests is established and this has been documented in separate
chapters. Because of the compatibility of the neem products with the plant and animal
environment, non-development of resistance to them, their harmless nature against the
non-target organisms, lack of any residue problem with their use etc., neem materials are
excellent inputs for use in the integrated pest control programmes. The issues relating to its
use in IPM are covered in the chapter on the subject.