How to control black heart disease of eggplant by withering and yellowing of half of eggplant

Eggplant

Reasonable watering and fertilization to avoid root injury of eggplant. In case of rainy season, should be timely drainage, especially on rainy days, the humidity in the shed is large, try not to water in this period. When watering in sunny days, it should be carried out before 10:00, and must not be watered at noon or in the afternoon, lest eggplant roots suddenly encounter cold water at higher ground temperature and cause retting roots. At the same time, try to avoid the application of fertilizers with too high nitrogen content, because nitrogen often exists in the form of ammonium nitrogen at low temperature, which will antagonize the absorption of trace elements and lead to element deficiency in eggplant.

The suitable ground temperature can promote the growth and development of eggplant root system and improve its fertilizer absorption, so that eggplant will not be black-hearted due to lack of elements. Therefore, in the continuous overcast days of early spring, it is necessary to often wipe the greenhouse film to maintain high light transmittance, so as to increase the temperature in the greenhouse, promote the rise of ground temperature and accelerate the growth and development of roots. At the same time, the ventilation in the shed should be strengthened, the humidity in the shed should be reduced, and the ventilation should be strengthened.

Reasonable topdressing, when eggplant has a black heart, spray foliar fertilizer containing potassium, calcium, magnesium, iron, zinc and other trace elements according to the actual situation. At the same time, the mixture of vegetable fruit Zhuangtiling and new high fat membrane was sprayed to improve immunity, promote the healthy growth of eggplant, increase the fruit setting rate and reduce the black heart disease of eggplant.