Pest & Disease Blue mold rot

Blue mold rot

Penicillium spp.

What is Blue mold (Penicillium spp.)?

Blue mold (Penicillium spp.) is a fungal disease that affects various fruits and vegetables. It is widely distributed and can infect plants such as citrus fruits, apples, pears, grapes, onions, garlic and others. The disease thrives in environments with high humidity and temperatures around 70-77°F (21-25°C). Initial symptoms include water-soaked or pale-yellow areas on the plant surface, followed by the development of a green to blue-green powdery mold. Infected fruits become soft, and watery, and develop a foul odor, making them unsuitable for consumption. Advanced stages lead to rot and disintegration of infected tissues.

How does Blue mold (Penicillium spp.) occurs?

Blue mold (Penicillium spp.) reproduces through spores, which are the primary means of dissemination and infection. The fungus produces abundant spores that are easily dispersed through air currents, water droplets, or contact with contaminated surfaces. These spores can enter fruits or vegetables through wounds, cracks, or damaged areas. Once inside, they germinate and develop mycelium, which spreads within the host tissues. As the mycelium grows, it produces more spores, leading to further spread and infection of nearby plants. This reproductive cycle allows the fungus to propagate and continue its life cycle.

Symptoms

1 - Impacts on Plants

Blue mold rot causes fruit decay, resulting in reduced quality, texture, and taste. Fruit growers and distributors face significant economic losses due to decreased market value and increased post-harvest waste caused by this rot.

2 - Ecological Balance

• Blue mold disrupts the ecological balance by causing disease outbreaks, impacting the health and survival of fruit plants. • Organisms relying on fruits may face reduced food availability due to blue mold-infected fruits, affecting their populations and interactions in the ecosystem.

Solutions

1 - Preventions

• Minimize fruit injuries and wounds during harvesting and handling processes to reduce entry points for the fungus. • Promptly cure fruits after harvest to ensure dry necks and minimize the moisture that promotes fungal growth. • Store fruits at optimal temperatures and humidity levels to inhibit fungal development. Maintain good air circulation to prevent moisture buildup. • Regularly inspect stored fruits and remove any infected ones to prevent the spread of the disease.

2 - Treatment

• Fungicide Application: Some commonly used fungicides for controlling blue mold rot (Penicillium spp.) include Thiabendazole, Imazalil, Pyrimethanil, and Sodium bicarbonate. • It is essential to carefully read and follow the instructions on the fungicide labels, including dosage, timing, and safety precautions.

Susceptible Species

FAQ

Do shade growing plants need any Sunlight?

Shade growing plants do need sunlight, although they require less than other plants. They need some direct sunlight each morning to help them photosynthesize and grow properly. Also, indirect sunlight throughout the day helps them stay healthy. Shade growing plants will benefit from the sunshine, but if they get too much or too little, then they can suffer the consequences. It's important to pay attention to the needs of your plants so that you can provide them with the proper light for optimal growth.

How often should you water indoor plants?

Indoor plants should be watered when the soil feels dry to a depth of about two inches, usually about once a week. A helpful technique to determine your plants' watering needs is to feel the soil before and after watering to get a sense of how long it takes to dry out. An important note to remember is that some plants require less water than others, and it's best to research the specific needs of your individual plants. Likewise, if your home is very dry, you might need to water more often as the lack of moisture can stress the plants and lead to problems like brown leaves and wilted stems.

Can my monstera plant get root rot?

Yes, a plant can get root rot. Root rot is a fungal disease that can be caused by over-watering, poor soil drainage, or high humidity levels in the air. Signs of root rot include yellowing leaves, wilting and stunted growth, and damaged or browning root systems. Sometimes it is difficult to detect root rot until the plant is removed from the soil, as the problems are mainly below the soil surface. Treating root rot usually involves removing the affected parts of the plant and replanting the unaffected ones.

Can I put my Monstera outside in summer?

No, you should not put your Monstera outside in summer. Monstera plants need warm, humid air to thrive, and direct sunlight can scorch their leaves. Instead, put your Monstera in a bright, sunny spot with indirect light, making sure the sun never directly hits the leaves. During the summer, keep your Monstera's soil damp and mist it occasionally to keep the leaves hydrated. At nighttime, keep the temperature around 16 - 21°C (60 - 70°F). You can definitely take your Monstera outdoors for short periods of time, just make sure to bring it back in if it starts to get too hot.

What happens if my monstera plant gets too cold?

If your monstera plant gets too cold, it will become vulnerable to pests, disease, or other damage. Cold temperatures can damage the leaves of the plant, causing them to become spotted or limp. The roots of monstera plants may also suffer in cold temperatures, leading to root rot or other diseases. Belonging to the tropical family, monsteras are used to warm environments and do not do well in cold temperatures, so it is important to ensure your plant is kept in conditions that suit their needs.

Is it possible to grow a vegetable garden in a small space?

Yes, it is possible to grow a vegetable garden in a small space. Gardening in a small space can be as simple as growing a few containerized plants in pots and raised beds, or as elaborate as vertically stacking planters, hanging pouches, and hanging baskets on a wall, railing, or fence. Regardless of the size of the space you are working with, some simple techniques such as companion planting, organic fertilizers, and water conservation can help you get the most out of your small vegetable garden.

Is peppermint herb green good for digestion?

Peppermint herb is indeed beneficial for digestion. The flavonoids in the herb support digestion by reducing inflammation in the digestive track, aiding in digestion and relieving indigestion, heartburn, and even the symptoms of irritable bowel syndrome. Additionally, peppermint is naturally rich in menthol, which helps to relax the muscles of the stomach, aiding in the digestion of food. Peppermint herb can be consumed in a variety of forms, such as teas, tinctures and capsules, as well as by adding the herb to food or directly to water or tea.

Should peppermint herb green be consumed daily?

No, peppermint herb green should not be consumed daily. This is because it contains high levels of menthol, which can be toxic if taken in large doses. Additionally, consuming large amounts of peppermint herb green could interfere with the absorption of essential minerals and vitamins, potentially causing vitamin deficiencies. For these reasons, it is best to consult with a doctor before incorporating peppermint herb green into your daily diet.