Disease prevention and control methods of colorful taro (colorful taro)

Colorful taro dry rot

Symptoms

Dry rot, also known as wilt, is a common disease of bulbous plants. It mainly harms the bulbs, and also harms the leaves, flowers and roots to a certain extent. Water-soaked reddish-brown spots will appear on the surface of the bulbs of the infected plants, gradually expanding to form round or irregular shapes, and the bulbs will gradually rot. When the disease is severe, the entire bulb will turn dark brown and dry rot.

During the growth period of colorful taro, it is rarely infected with dry rot, and it is usually infected due to improper storage.

Prevention and treatment methods

Before storing the bulbs, they must be selected and some weak and diseased bulbs must be thrown away to avoid infection of other bulbs during storage.

During storage, handle with care to minimize wounds. Ensure that the storage environment is well ventilated, disinfect before storage, and control the storage temperature at 1~4 ℃. Check regularly and remove rotten bulbs in time.

Taro leaf spot

Symptoms

Leaf spot is one of the common diseases of foliage plants. It occurs everywhere, generally concentrated in spring and autumn. Leaf spot disease mainly infects leaves, petioles and stems. Circular spots will appear on the leaves, gradually expanding to form irregular spots and producing ring patterns. The color will also change from reddish brown to dark brown, with gray-brown in the center.

Prevention and treatment methods

If diseased plants are found, remove them promptly to avoid infection of other plants.

Strengthen maintenance, pay attention to timely ventilation, and do not water directly on the leaves.

Start spraying pesticides from the early stage of the disease to prevent the disease from spreading. Commonly used agents include 1000 times of 50% thiophanate, 500 times of 70% mancozeb, 400-600 times of 80% mancozeb, 500 times of 50% captan, etc. Pay attention to choosing two agents to use alternately when spraying to avoid drug resistance in bacteria.