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Tagetes minuta (marigold)
Asteraceae
General
An introduced garden ornamental, native to Central
America, widely planted in public and private gardens. Nowadays it is
found as an escape in fields and along riverbanks, even at elevations
above 600 m. It is an erect annual herb, branching above, growing up to
ca. 90 cm high, rooting at the lower nodes. Leaves usually are alternate,
deeply divided with toothed leaflets which are linear-elliptic.
Plant parts with insect-controlling properties
leaves, flowers, seeds, roots, whole plant
Mode of action
repellent, insect-controlling, fungicidal, nematocidal
Target organisms
General grain pests, aphids, bean pod weevil, caterpillars diamondback
moth, leaf beetle, leafhoppers grasshoppers
Preparation and
application
Collect leaves and seeds of the plant and dry them, then pound them into
a powder. Mix 20 litres of grain with 1/4 litre of marigold powder.
Cut fresh marigold plants and place them
inside the sotre room about 1 inch thick. Then fill the granary with the
grains. On top of these spread another layer of crushed marigold.
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