Zucchini leaves curling downward
Squash None Given
Hi,
My zucchini plant leaves have curled downward with the older leaves almost touching the ground. It is not wilting because the leaves are all in good shape but just curled downwards. It happened in few plants before too but they recovered after a while. Below is the scheme of things I'm following to grow my zucchini plants.
Water 2-3 inches weekly since it's around 40 Celsius during day time.
Use hydrogen peroxide weekly for disinfection
Use NPK 20 20 20 weekly to feed my plants
Using cow manure dressing in grow beds
Weekly fungicide programme using systemic and protectant fungicide mixes.
I have also attached photos for your reference.
Regards,
Hazy
My zucchini plant leaves have curled downward with the older leaves almost touching the ground. It is not wilting because the leaves are all in good shape but just curled downwards. It happened in few plants before too but they recovered after a while. Below is the scheme of things I'm following to grow my zucchini plants.
Water 2-3 inches weekly since it's around 40 Celsius during day time.
Use hydrogen peroxide weekly for disinfection
Use NPK 20 20 20 weekly to feed my plants
Using cow manure dressing in grow beds
Weekly fungicide programme using systemic and protectant fungicide mixes.
I have also attached photos for your reference.
Regards,
Hazy
Zucchini leaves curling downward
Posted
by: Hazy
(1 point)
Posted: June 5, 2016
Answers
I can't say for sure based on the photos & description, but downward bending leaves/petioles is a characteristic of Auxin-type herbicide injury. Many herbicides used for weed control in turf (like 2,4-D & dicamba) will cause this type of symptom. If you (or a neighbor) has sprayed any of these products recently, this could be the cause. A google image search for "2,4-D injury " might help you determine if your symptoms are similar.
Posted
by: Andy Kniss
(3 points)
Posted: June 5, 2016
Andy Kniss commented,
Auxin herbicides can cause a buildup of hydrogen peroxide, but I don't believe that foliar application of hydrogen peroxide to the plant would cause the downward bending (also called epinasty) you're observing. almost 8 years ago.
Auxin herbicides can cause a buildup of hydrogen peroxide, but I don't believe that foliar application of hydrogen peroxide to the plant would cause the downward bending (also called epinasty) you're observing. almost 8 years ago.
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