What is pineapple wilt? How to prevent and cure?

What is pineapple wilt? How to prevent and cure? Please give guidance to pineapple Fusarium wilt, also known as pineapple root rot, control methods can be referred to the following: 1, the symptoms of the upper part of the disease showed that the basal leaves turned yellow and red, wrinkled, lost luster, the leaf edge curled inward, and then the leaf tip withered, the leaf withered, and the plant stopped growing. With the development of the disease, from root tip rot to partial or total root rot, the plant withered. Most people believe that the disease is caused by virus infection carried by the pineapple pink scale. 2. Morbidity condition, ① climate factor. It is easy to occur in autumn and winter with high temperature and drought, but it is also common in spring with low temperature and overcast and rain. In Hainan Province, it mostly occurs from November to January-February of the following year. ② plant growth factors. In general, the plots with exuberant plant growth, high level of fertilizer and water management and over-close planting are prone to disease and serious. ③ environmental condition factors. The hillside depression is easy to accumulate water, the hillside is steep, the soil erosion is serious, the root system is exposed and the water retention is poor, the root system is easy to die and wither. ④ underground pest factor. Sucking underground roots such as grubs, termites and earthworms can aggravate the occurrence of Fusarium wilt. 3. Control technology ① strictly selects disease-free and strong seedlings. Do not select and introduce species from disease areas and disease fields. If introduced from the disease area, the rhizome base of the seedling must be soaked in the solution for 2 minutes, and the liquid should be placed upside down to accumulate at the base of the leaf, so as to kill the remaining pink scale in the seedling and wait for it to dry before planting. The seedlings can be soaked with 50% marathon EC 800x, 40% dimethoate 800m 1000 times or 80% dichlorvos EC 1000 times. ② fertilizer treatment. When diseased plants are found, the above agents can be sprayed together with 50% methyl topiramate wettable powder 400 times and 1% Mel 2% urea in time to promote the yellow leaves to turn green. The soil around the diseased plant and the base of other healthy plants should be drenched with one of these insecticides to control pink scale and underground pests. ③ improved the garden environment. Pay attention to the selection of planting plots. Strengthen management. High-border planting should be adopted to avoid stagnant water and soil erosion in orchards. Kaolin and clayey soil should be treated with organic fertilizer to improve soil ventilation, promote root growth, dig out diseased plants and burn them in time. Click to get more pineapple planting techniques click to get more fruit planting techniques