Introduction

Tomatoes are one of the most popular vegetables grown in home gardens. However, they are also vulnerable to various pests and diseases, including blight. Blight is a common problem affecting tomato plants, causing significant damage to the fruit and foliage. In this article, we will discuss what blight looks like on tomato plants and how to identify and prevent it.

What is Blight?

Blight is a fungal disease that affects tomato plants. It is caused by various fungi such as Alternaria solani and Phytophthora infestans. Blight usually starts as small, dark spots on the leaves and stems, which gradually spread to other parts of the plant. As the disease progresses, it causes the leaves to yellow and eventually die. In severe cases, blight can also affect the fruit, causing it to rot prematurely.

Identifying Blight on Tomato Plants

One of the first signs of blight on tomato plants is the appearance of small, dark spots on the leaves or stems. These spots may be circular, irregular, or elongated in shape and may appear water-soaked. As the spots grow, they may merge to form larger, irregular-shaped blotches that turn brown to black. The infected leaves may also curl or wilt, and may eventually fall off the plant. If blight affects the fruit, it may develop brown or black spots, become soft and mushy, and may rot on the vine.

Types of Blight

There are two main types of blight that affect tomato plants: early blight and late blight. Early blight is caused by the fungus Alternaria solani and usually affects the lower leaves of the tomato plant. It starts as small, concentric rings on the leaves, which gradually enlarge to form brown to black spots. Late blight, on the other hand, is caused by the fungus Phytophthora infestans and can affect both the leaves and fruit of the plant. Late blight usually appears as dark, water-soaked lesions on the leaves, which can quickly spread to other parts of the plant.

Preventing Blight on Tomato Plants

Preventing blight on tomato plants is essential for maintaining healthy plants and a bountiful harvest. Here are some tips to prevent and control blight:

Plant resistant tomato varieties

Avoid planting tomatoes in the same location year after year

Water early in the day, at the base of the plant to avoid getting water on the leaves

Provide adequate air circulation around the plants

Remove infected leaves and stems immediately and dispose of them properly

Apply fungicides to prevent and control the spread of blight

Conclusion

Knowing how to identify and prevent blight is vital for tomato gardeners. With proper care, attention, and timely measures, tomato plants can thrive and produce a bountiful harvest, free from blight and other diseases.