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Insects,
pests, fungus and bacteria attacks resulted in to heavy losses of
crops. In order to protect them farmer are compelled to use synthetic
pesticides but they have shown negative effect on the environments and
human and health. The Scientist now are working on new source of
pesticide, which are less harmful and environment friendly.
Azadirachin a triterpenoid extracted from neem seed and it oil used as
insecticide by following mode actions. * Antifeedants. * Repellents.
* Distruptants of normal growth.
We raised neem on 8 acres of
land with tree population of 108 trees/acres. Since neem is un-social
tree and does not flourish as monoculture, we planted another 108
trees of Syzinuim Cumminal between neem trees in each now. Trees were
treated with ground application, Foliar sprays with N:P:K and with
micronutrients were also applied to help fast growth of the trees. In
the year 4 neem trees shed their leaves in the preflowering stage.
These leaves were collected and used as a mat of mulch under lychee,
longan, peaches, guava, and grapes. These trees are mulch year around
by maintaining 10” thick layer of weeds growing between the tree rows,
due to mulch trees grow faster, fruit earlier, or attacked less by
diseases and yield is 3 times that of non-mulch trees. On 50 % of the
area under mulch we sprayed neem leaves to form a thin uniform layer
about 1/2” thick and above it piled the waste material consisting of
chopped weeds. The other half of the area received only mulch from
cut-weeds. |
