The weeding is best done by manual extraction, and it is not suitable to weed with mechanical or chemical agents(gallon pot). Summer cultivation of Chinese cabbage must be shaded and rainproof, especially in summer. The cover film can be covered with a shading net, a non-woven fabric, a cold yarn, and the like(6 cell propagation trays wholesale). The fungal disease caused by the infection of the melons of the genus Basil, which is a genus of Rhizoctonia solani.
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It is best to use the depth of the cultivating to be shallow in the early stage and easy to deep in the later stage(cell trays). Strengthen cultivation management, and the lettuce is generally harvested in real time 25-35 days after the ball is formed. During the growing period, the soil should be kept moist, and it can be watered 1 or 2 times a day, preferably in the morning and evening(8 cell propagation trays wholesale). Generally, the disease occurs first in the petiole near the ground.(cheap square plastic starter plant pots nz)
The diseased part is brown necrotic spot at the beginning, and then spreads to the entire petiole(square grow pots). When the humidity is high, the diseased part overflows the dark brown juice; when the weather is dry, the diseased part is limited to one brown. Depression spots. When the average daily temperature in the shed is above 20 °C, and the humidity is high, the disease is prone to prevalence(12 cell propagation trays wholesale). The disease includes soft rot, sclerotinia, and viral diseases.
Keep the field ventilated and transparent to avoid excessive humidity(cheap plastic plant pots bulk). The insect pests of the lettuce are mainly aphids, which damage the leaf ball when the conditions are suitable, resulting in the whole leaf ball being wet and rotted. The diseased department often produces reticular mycelium or brown sclerotia(18 cell propagation trays wholesale). The pathogens are used in the soil, and the hyphae are in contact with the host and invade through the stomata for initial infection and reinfection.
(cheap square plastic starter plant pots nz)Reasonable close planting can be controlled by killing emulsifiable concentrate or dimethoate emulsifiable concentrate(nursery plant pots), and can be eaten 7 days after spraying. It can be used to control soft rot and sclerotinia with carbendazim or diclosan(36 cell propagation trays wholesale). It can also be used to control viral diseases by virus A wettable powder or anti-toxic agent No. 1 water agent and Tianzeng anti-agent, once every 10 days, a total of 3-4 times.
Combined with the prevention and treatment of other diseases(large plastic terracotta pots), the harvesting time should be sooner rather than later, especially in spring and summer, the harvest is easy to twitch, and the leaf ball is perishable and reduces the quality. Cabbage lettuce has medium light intensity requirements, too strong and too weak for its growth(40 cell propagation trays wholesale). Different growth stages have different water requirements, and the seedling stage is easy to age due to dry seedlings.
During the formation of leaf globules, excessive moisture is likely to occur in lettuce, and it is susceptible to soft rot and sclerotinia(plastic plant pots wholesale suppliers). In addition, in the early stage of the new leaves, the lettuce should also be sprayed with 0.2% urea and 0.2% potassium dihydrogen phosphate. It is necessary to increase the application of phosphorus and potassium fertilizer(40 cell plug tray wholesale). The control of locusts is carried out before the core, so as to avoid leaf pollution caused by late control.
Management technical points: water control should be properly controlled during the balling period(plastic plant trays wholesale). Thin-acting nitrogen fertilizer was applied 6 to 7 days after planting to promote hair root growth and leaf growth. During the growth of the lettuce, it is necessary to loosen the soil(51 cell propagation trays wholesale), but because the roots are not deep into the soil, the loose soil should not be too deep, so as not to damage the root system.(cheap square plastic starter plant pots nz)