1. Diseases: Cassava generally has fewer insect pests, and the main diseases are:
(1) Bacterial blight: This is the most serious disease that harms cassava. It first endangers mature leaves, then spreads from bottom to top, first infecting the leaf margin or leaf tip, appearing water-stained spots, often spilling yellow milk, and then rapidly expanding until it wilts, until the whole plant dies.
(2) Bacterial horn spot disease: At the time of the onset of the disease, water-stained corner spots appear in each part of the leaf, and yellow emulsions can be seen. The lesions begin with a yellowish halo and then turn blackish brown, causing the leaves to turn yellow and fall off.
(3) Brown horn spot disease: irregular brown spots appear on both sides of the leaf when the disease occurs, and the leaves turn yellow and dry off when severe. The above conditions should be used in a timely manner.
2, insect pests: the main pests that harm cassava are cassava single-claw mite, cotton mealybug, William flower thrips, tobacco whitefly, red spider, big-headed crickets, termites and scarab beetles, should pay attention to prevention and control, timely medication.
3, rat infestation: cassava rat infestation is quite serious, especially in mountainous areas, in addition to drug control, but also to clean up the countryside, eradicate the surrounding weeds, so that the rat has nowhere to hide.
【Editor's comments】Blight, horn spot disease, scarab beetles, thrips, rats, etc. are common diseases and insect pests of cassava, the above Xiaobian briefly introduced the harm of these diseases, insects and rat pests for you, want to know more about the information related to cassava diseases and insect pests, such as "How to use medicine for cassava weeding?" "Cassava blight prevention and control", etc., you can pay attention to me.