Control Technology of Solanaeeous Vegetable Diseases in Solar Greenhouse in Shandong Province

The prevention and control methods are as follows. (i) The land is leveled, with appropriate watering, while flood irrigation is strictly forbidden. (ii) Tall seedbeds or plots with good drainage should be selected. (iii) The irrigation time is shortened to make water sink rapidly into the soil. (iv) After transplanting, temperature, humidity and ground temperature is well managed; when the humidity rises, the greenhouse is ventilated to exhaust moisture in time; when the ground temperature is low, the soil is loosened for 2 -3 times to improve the ground temperature and create normal conditions for the development of roots. (v) In the initial stage of incidence, 40% fosetyl-aluminium WP 200 times dilution, 58% metalaxyl -mancozeb WP 500 times dilution, 70% fosetyl-aluminium- mancozeb WP 500 times dilution, 50% metalaxylorganocupric salt WP 600 times dilution are sprayed to control the disease. 3Tomato Pythium Basal Stem Tot After transplanting for 7 -8 d, the stem base of tomato decays commonly, and the incidence is aggravating year by year. Metalaxyl * hymexazol AS, flumorph * fosetyl-aluminum, metalaxyl-M mancozeb can be used to irrigate roots or spray stem base for the prevention and control of the disease. 4 Tomato Stem Blight Tomato stem blight occurs from seedling stage to adult stage, but it is more common in the middle and late growth stage. [...]leaves are dried or the whole plant is dead. The prevention and control methods are as follows. (i) Seed infection: seeds are soaked in 52 " warm water for 30 min or preimmersed in water for 10 -12 h, then soaked in 1% copper sulfate for 5 min; subsequently, the seeds are mixed with a small amount of plant ash, or soaked in 70% ofurace 600 times dilution or 25% metalaxyl 400 times dilution for 10 min; finally, seeds are washed and dried for accelerating germination. (ii) Spraying or root irrigation after transplanting: in the early stage, agents are sprayed at stem base and ground surface before incidence to prevent and control primary infection; in the middle and late stage, root irrigation is the main method to control secondary infection; when infection center is found in the field, root irrigation and stem spraying should be performed; 50% metalaxyl-organocupric salt WP 800 times dilution or 70% ofurace WP 600-800 times dilution or 72% curzate WP 800 times dilution are sprayed for continuous 3 - 4 times. 7Eggplant Stem Rot The disease used to be a sporadic disease in some areas and plots in Shandong P