Recently, a vegetable farmer in Jinan called to ask questions about the black heart of eggplant. In view of the problems of eggplant's black heart that appeared in the recent period, the author consulted relevant experts and summarized it for the reference of farmers. Before analyzing the black heart of eggplant, first correct the two wrong views: 1. The reason for the black heart of eggplant is that many vegetable farmers believe that it is the cause of eggplant planting year after year. However, in some greenhouses where organic fertilizers are applied seldom, and the amount of chemical fertilizers is small, the occurrence of eggplant black heart symptoms is small or does not occur. Excluded the reason why the black cockroach was produced. 2, eggplant black heart is caused by viral diseases. The situation has changed since eggplant was sprayed with antiviral agents. Experts explained that the essence of the situation after the spraying of viral diseases is improved is that the virus disease agent itself is a kind of nutrient, and it is similar to the health care products used by people. After use, the plant growth will surely be strong, and after the vigorous growth of plants, the disease will be covered. It seems that the situation has turned for the better. In fact, the illness has not improved but it may have increased. According to the reflection of farmers and other local farmers in Shouguang, eggplant ruddy heart disease occurs in greenhouses with poor insulation performance for many years, and it is the case that eggplant black hearts are severely affected by cloudy days and rain and snow conditions. Experts concluded that eggplant black heart is a lack of absorption. 1. In the case of cloudy days, the humidity in the shed is relatively large, and in order to maintain the temperature in the shed, basically, the air is not released. Without transpiration, the root system cannot absorb enough nutrients, and the nutrients naturally cannot supply the growth of the eggplant, causing the black heart of the eggplant. 2. Under the conditions of continuous cloudy days, there is not sufficient light, the ground temperature is low, and there are too many chemical fertilizers in the greenhouse. There are many nitrogenous fertilizers in the soil, and the nitrogenous fertilizer has more ammonium nitrogen, which inhibits the plant to potassium and calcium. Absorption of magnesium and other elements causes the lack of these elements in the eggplant fruit, causing black heart symptoms. For the cause of the formation of black heart eggplant, experts put forward the following prevention and control suggestions: 2. Pay attention to the hardening seedlings at the seedling stage and maintain the root system. For sorghum cultivation, experts advise that this method may slow the seedlings, but it can get the effect of deep roots and leaves. 3. When turning to the ground, pay attention to deep turning. The root system of eggplant is long and the deep-turning land helps the development of the eggplant root system and enhances its absorption capacity. 4, often wipe the film, maintain high light transmission, and enhance the temperature. 5, after the discovery of black eggplant symptoms can be sprayed depending on the weather conditions containing potassium, calcium, magnesium, iron, zinc and other trace elements of fertilizer. You can flush or choose foliar spray. 6, to the eggplant tonic, 800 times the number of leaf spray harvest, enhance the robust leaves, promote photosynthesis, so that the nutrients needed for the eggplant fruit continuously supply.
Propiconazole is used
agriculturally as a systemic fungicide on turfgrasses grown for seed and
aesthetic or athletic value, wheat, mushrooms, corn, wild rice, peanuts, almonds, sorghum, oats, pecans, apricots, peaches, nectarines, plums, prunes and lemons. It is also used in combination with permethrin in formulations of wood preserver. Propiconazole
is a mixture of four stereoisomers and was first developed in 1979 by Janssen
Pharmaceutica. Propiconazole
exhibits strong anti-feeding properties against the keratin-digesting
Australian carpet beetle
Agricultural Propiconazole,Difenoconazole Propiconazole,Propiconazole Based Agricultural,Agriculture Pesticide Propiconazole Ningxia Bornstein Import & Export Co., Ltd , https://www.bornstein-agriculture.com
1, the application of adequate decomposition of organic fertilizer, or to buy a special commodity fertilizer, less use of chemical fertilizers, eggplant fertilizer shortage when giving priority to organic fertilizer. 