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Rice crop growth stages and fungicide spray (ਝੋਨੇ ਵਿੱਚ ਉੱਲੀਨਾਸ਼ਕ ਦਾ ਕੰਮ ਕਰਨ ਦਾ ਤਰੀਕਾ ਤੇ ਸਪਰੇਅ ਦਾ ਸਮਾ)

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Description

in this video important information about fungicide group selection for the rice/basmari crop discussed. Proper time of spray and 10 point check list will increase farmer profit and decrease environmental pollution.

Key Points
• Cereal foliar fungicides do not move down the plant, movement in the leaves and stem
is upwards towards the leaf tip via the water carrying xylem vessels.
• Foliar fungicides applied to the leaves do not protect un-emerged leaves or the base
of part emerged leaves, other than reducing inoculum levels on lower leaves.
• Movement in these xylem vessels is the same for triazole fungicides applied to the
leaf or applied as a seed treatment. However the movement of active ingredient from the
stem base into new tissue i.e. from in-furrow or treated seed is less constrained than
applying fungicide to the leaf (since product cannot move back down the leaf).
• Fungicides are better employed before disease becomes established in the leaves to
be protected. A delay in spraying increases the need for higher fungicide rates since
there is more dependency on curative activity.
• Applying fungicide to a given leaf before infection becomes visible gives greater rate
flexibility.
• Strobilurins are extremely effective protectants but poor curative fungicides.They
have the ability to control disease and keep the crop greener for longer, provided there
is sufficient soil moisture and plants are not subjected to excessive temperatures. (Note
for cereals: strobilurins are only available in a mix with a curative triazole fungicide).
• Triazoles are, in contrast better curative products with variable protection
characteristics depending on how long sufficient concentration can be maintained
within the leaves (remembering that once inside the leaf the fungicide starts to move
away from the point of contact with the plant).
#fungicide
#ricecrop
#jhona
#bimari
#spray
#growthstage
#workingoffungicidw
#curative
#protective
#checklist

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