Other
Blossom Drop
Blossom drop
Other
In a Nutshell
- Sudden death of young flowers.
- Drop of flowers.
Can also be found in
Other
Symptoms
The plant blooms, but then the flowers often die and fall off. Sometimes, before falling, the flower stems turn yellow.
Recommendations
Organic Control
Organic control mainly involves taking preventive measures. Make sure to check if plant growth regulators are permitted for your organic products. If so, read the guidelines for chemical control.
Chemical Control
Farmers can keep more flowers on their greenhouse plants by using special sprays like GA3 or NAA. It's important to spray the flowers at the right time, just as the instructions say. Keep in mind that these sprays might not always work because many different things can affect flowering. This isn't a fix for every problem.
What caused it?
Flower drop can be caused by factors that disrupt pollination and plant health or by the absence of pollinators. Both low and high temperatures, as well as low and high humidity levels that are not ideal after the flowers are pollinated, are important causes. Too much nitrogen encourages leaves to grow instead of flowers, leading to poor fruit development, while too little nitrogen results in weak vines that can't support fruit. Not enough water stresses plants, and too much water can suffocate their roots causing blossom drop. Thrips and mites damage plant tissues causing flowers to fall off, and fungal diseases stress plants which also leads to dropped blossoms.
Preventive Measures
- Choose plant varieties that thrive in your local climate.
- Ensure pollinators are available, particularly in greenhouse environments.
- Promote pollination through insects, wind, or manual shaking.
- Check for flower pollination: Flowers that have been visited by pollinators change from a bright yellow to a more brownish colour.
- Ensure proper balanced fertilisers.
- Water thoroughly in dry conditions.
- Maintain healthy tomato plants with preventative fungicide treatments and effective pest control.
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