According to a survey of a variety of cucumber infestation diseases, about 34.6% of the seeds are transmitted by bacteria, mainly including anthrax, black spot, black spot, and bacterial angular spot diseases.
Therefore, seeds should be disinfected before sowing.
There are many methods of disinfection, of which heat sterilization method is better, with simple operation, broad spectrum of sterilization, safe for seeds, environmental protection, cost savings, etc.
Point, suitable for the majority of farmers. Practice: Immerse cucumber seeds in room temperature water and pre-soak for 4 hours. Remove and immerse them in hot water at 55°C. Sterilize by using heat.
Poison for 15 minutes, then remove and cool in cold water, then transfer to germination or sowing. The precautions are the water temperature and time strictly complying with the technical requirements.
Seed treatment includes seed disinfection and soaking, germination.
(1) Seed Disinfection: Seed Disinfection is the most economical and effective method for preventing and controlling a variety of infectious diseases and insect pests, and it is an indispensable method to prevent plant diseases and insect pests.
Measures. Due to the small amount of seed treatment and the long harvest time from the cucumber, there is almost no problem with pesticide residues, so it is also unprincipled.
An important measure to promote the use of vegetables.
1 Seed coating: Seed coating agent contains fungicides, insecticides that kill pathogens and underground pests, and can promote seed germination and cucumber growth.
Trace element fertilizers and plant growth regulators. Some of the commodity seeds are already coated before delivery, and the use of such seeds does not require disinfection.
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2 Soaking with warm soup: Soaking with warm soup is a method of killing germs on the surface of seeds by using high temperature and different tolerances of dry and germs.
. The dried seeds were put into warm water of 55-60°C, stirring constantly, and hot water was continuously added, and the water temperature of 55-60°C was maintained for 10 minutes. Temperature dropped to 28-30
Re-soak the seeds for 4-6 hours at °C. Pellet after cleansing.
3 Pharmaceutical soaking: First, use 72.2% Precloam or 25% metalaxyl WP 800 times soaking for 20 minutes to control cucumber seedling fungi
Sexual diseases. Second, 50% of methine WP can be soaked for 500 minutes to prevent anthracnose and stem blight. Third, with 2.5% Shiloh suspension seed coat
The agent coating disinfection can not only kill the pathogenic fungi latent in seed coat, but also infiltrate into the seeds to kill the pathogenic fungi invading the seed and effectively prevent melons.
Seedling stage damping-off, blight and other diseases. Fourth, in order to prevent viral disease caused by seeds, it can be soaked in 10% trisodium phosphate solution for 20 minutes.
. Fifth, the 1 million-unit agricultural streptomycin 500-fold dilution soaked for 2 hours can prevent bacterial diseases.
Regardless of the kind of agent used to soak seeds, the seeds should be washed with water after soaking so as to prevent the occurrence of phytotoxicity.
(2) Soaking and germination
1 Soaking: Seeds soaked in warm soup or soaked in pesticides and then soaked for 4-6 hours at a temperature of 25-30°C so that the seeds will absorb 50-60% of their dry weight.
The water, then hand-wash the mucus on the seed coat, remove the germination inhibitor, rinse away the impurities and rinse the seeds, and rinse with clean water.
2 Germination: Seeds soaked are wrapped in clean wet gauze. The wet towel wrung out on the bread is placed in a place of germination at 25-30°C. Use warm water every day
Rinse 1-2 times, continue to germinate after washing, germinate at a temperature of 25-30°C for 16-20 hours, and sow seeds that have germinated in batches or sowing
Placed at 5-8 °C, so that all the seeds together after sowing.
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