damping-off disease slideshare

What is a damping off disease?

Damping off is a disease of seedlings

Visible damping off fungus growing on an emerging seedling. Once plants have mature leaves and a well developed root system, they are better able to naturally resist the fungus or mold that causes damping off.

How can damping off be prevented?

Damping off can be reduced by planting fungicide-treated seed directly into the garden. Other preventative measures include using well-drained soil and avoiding overcrowding of plants. Also, clean out all pots thoroughly before reuse and discard contaminated soil.

Can you reverse damping off?

There is no cure for damping off, once it occurs. The tiny seedlings die so quickly, you probably would not have time to help them if you could. That's why it is important to try and avoid the problem altogether, with the following prevention practices. Damping off spreads rapidly.

What causes damping off in tomatoes?

About Damping Off

It is usually caused by a fungal disease, most often by one of several root rots or molds. Seedlings that are affected by damping off often fail to emerge, or fall over and die soon after emerging. Most seedlings that are affected by damping off rarely grow to produce a strong, fruit bearing plant.

What is the cause of damping?

A system may be so damped that it cannot vibrate. ... Friction, also called in this context dry, or Coulomb, damping, arises chiefly from the electrostatic forces of attraction between the sliding surfaces and converts mechanical energy of motion, or kinetic energy, into heat.

Can I spray fungicide on seedlings?

All of these fungicides can cause some stunting and yellowing of young seedlings. Do not use fungicides unless damping-off becomes or has been a problem.

Does cinnamon prevent damping off?

If you are going to use a spice to treat damping-off, cinnamon is your best choice. It probably works to some extent, but there is no direct scientific evidence that it will prevent damping-off in seedlings.

What are the steps of transplanting?

10 simple steps to transplant

Seedlings should be hardened-off, well-fed and watered before transplanting.
Prepare a weed-free surface. ...
Dig a hole large enough for seedling.
Carefully remove seedling from its container. ...
Set seedling in hole level with soil surface. ...
Feed seedling to kick start growth.

When does damping off occur?

Several fungi can cause decay of seeds and seedlings including species of rhizoctonia, fusarium and phytophthora. However, species of the soil fungus pythium are most often the culprit. Damping off typically occurs when old seed is planted in cold, wet soil and is further increased by poor soil drainage.

Will hydrogen peroxide kill seedlings?

When using hydrogen peroxide for plants, however, the solution is generally diluted, making it especially safe. ... This extra oxygen (H2O2) gives hydrogen peroxide its beneficial properties. So, the answer to the question “does hydrogen peroxide hurt plants” is a resolute no, provided the strength is sufficiently diluted.

What is killing my seedlings?

The most common cause of early seedling death is “damping-off,” a fungal disease which affects the new plant stem just at soil level. The stem becomes brown, rots and the little plant topples over and dies. Damping-off fungi are more of a problem in cold soils with poor drainage, and in conjunction with overwatering.

How do you stop tomato damping?

If possible, avoid planting when the soil is cool; seeds germinate faster and seedlings are more vigorous when the soil is warm, so they are less likely to be damaged. The use of fungicide seed treatments can help prevent damping-off. When seedling loss is extensive, replanting may be necessary.

What do I do with leggy seedlings?

Put a small fan next to your seedlings on a timer so that the plants are blown in the breeze for a couple of hours a day and gently passing your hand over the tops of seedlings a few times every day to stimulate stronger growth. Some leggy seedlings can be saved with modified transplanting techniques.

What are the diseases of tomatoes?

Tomato Diseases & Disorders

Bacterial wilt (Ralstonia solanacearum) causing a rapid wilting of tomato plants. ...
Early blight (Alternaria species) on tomato foliage. ...
Septoria leaf spot (Septoria lycopersici) on tomato. ...
Leaf mold (Fulvia fulva) on tomato foliage. ...
Leaf mold (Fulvia fulva) on lower leaf surface.

What does harden off before transplanting mean?

Because seedlings are weaklings, they need time to toughen up before transplanting in the garden. Hardening off is a simple process of gradually exposing tender plants to sunlight, wind and uneven temperatures. When plants are almost ready for the garden, take them outside for short amounts of time each day.

What is damping and its types?

Types of damping are: viscous and hysteretic damping. Viscous damping depends on frequency. ... The damping force of Coulomb damping is constant. Solid damping or hysteretic damping is caused by internal friction when a solid is deformed. Its size is related to the amplitude of stress.

Why is damping important?

Damping is a way to limit vibrations and is essential for protecting the system in which it operates. This is what happens with door or drawer springs, where damping prevents blows when opened/closed, preserving them and protecting the system.

Which damping is best?

Sorbothane® is the best damping material for several reasons:

It absorbs up to 95% of shock energy and more than 50% of vibration energy for millions of cycles;
It performs across frequencies from 10 to 30,000 Hertz;
It performs across temperatures from –20° to 160° Fahrenheit (–29° to 72° Celsius);

How do you keep seedlings from damping off?

The Recap: The natural way to keep damping-off disease away

Keep the environment within the pot clean.
Use powdered kitchen spices on the soil surface.
Water with spiced “tea”
Water with hydrogen peroxide solution.
Let the plant's root system grow so it can protect itself before transplanting.

How do you protect seedlings?

An easy and inexpensive way to protect your wee plantlings is with a plastic pop-bottle cloche! Any plastic bottle will do. Small ones are good for individual plants that grow straight up, and larger ones will cover multiple seedlings or ones that become bushy. Unscrew and discard the cap.

Will cinnamon kill seedlings?

Benefits Of Cinnamon On Plants: Using Cinnamon For Pests, Cuttings, & Fungicide. ... This versatile spice can be used to help root cuttings, to prevent fungus from killing small seedlings and even for keeping pests away from your home.