Control Methods and Medicinal Benefits of Rust Disease on Iris lactea Flowers

Iris lactea, also known as Chinese iris and iris lactea flower, is a perennial herbaceous plant of the Iridaceae family. Its flowers, seeds and roots are used as medicine. Iris lactea flowers have the effects of clearing heat and cooling blood, and promoting diuresis and reducing swelling. It is distributed throughout the country. So do you know what the control methods for iris lactea flower rust disease are? What are its effects and medicinal value?

I. Control methods for iris lactea flower rust disease

1. Causes of the disease

In the south, the fungus mainly oversummers as urediniospores, becoming the primary infection source of the disease, and spreads and spreads throughout the four seasons; in the north, it mainly overwinters as teliospores on diseased plant residues, and when conditions are suitable the following year, it produces basidia and basidiospores. The basidiospores invade the host and form the aecium stage, and the aeciospores produced infect hyacinth bean and form blister-like uredinial pustules, releasing urediniospores for reinfection, allowing the disease to spread and expand. In late autumn, telial pustules and teliospores are produced to overwinter. In the north, the disease mainly occurs in summer and autumn, especially leaf surface condensation and water droplets on the leaf surface are the prerequisites for rust fungus spore germination and invasion. The suitable temperature for urediniospore formation and invasion is 15—24℃, and germination can occur at 10—30℃, with 16—22℃ being the most suitable. At a daily average temperature of 25℃ and relative humidity of 85%, the incubation period is about 10 days. When hyacinth bean enters the flowering and pod-setting stage, temperatures above 20℃, high humidity, large day-night temperature differences and long dew duration make it prone to epidemics. Seedlings do not develop the disease, and autumn-sown hyacinth bean and continuous cropping fields have severe disease. In some southern regions, spring planting often has more severe disease than autumn planting.

2. Control methods

(1) Plant resistant varieties. It is recommended to apply compost fermented with Japanese enzyme bacteria or fully decomposed organic fertilizer.

(2) Spring sowing should be early, and seedling transplanting can be used when necessary to avoid the disease.

(3) Clean the field, strengthen management, and plant at appropriate density.

(4) At the early stage of the disease, spray 15% triadimefon wettable powder at 1000-1500 times dilution, or 50% carboxin emulsifiable concentrate at 800 times dilution, 50% sulfur suspension concentrate at 300 times dilution, 25% diniconazole emulsifiable concentrate at 3000 times dilution, 70% mancozeb wettable powder at 1000 times dilution plus 15% triadimefon wettable powder at 2000 times dilution, 30% solid lime sulfur at 150 times dilution, 12.5% flutriafol wettable powder at 2000-3000 times dilution, 10% imibenconazole emulsifiable concentrate at 3000 times dilution, 80% xinwansheng wettable powder at 500-600 times dilution, 6% lebigeng wettable powder at 1000-1500 times dilution, 40% DuPont Xinxing emulsifiable concentrate at 9000 times dilution, once every 15 days, for 1 or 2 treatments. Stop applying the pesticide 5 days before harvest.

II. What are the effects and medicinal value of iris lactea flowers

1. Medicinal value of iris lactea flowers

Iris lactea flower is also a Chinese medicinal herb. Its flowers, seeds and roots can all be used as medicine. It is a Chinese medicinal herb with excellent effects. After being used as medicine, they can promote diuresis and free urination, and also clear heat and detoxify. They are commonly used in the treatment of diseases such as difficult urination, jaundice and sore throat in humans, with obvious therapeutic effects.

2. Iris lactea flowers can treat excessive menstruation

Many women have symptoms of heavy menstrual flow, and this symptom can be cured with iris lactea flowers. During treatment, take three qian of iris lactea flowers and four qian of pomegranate peel, grind them together into powder, then take it three times a day, and after taking it continuously for about one week, the symptom of heavy menstrual flow can be significantly improved.

3. Iris lactea flowers can cool blood and dissipate blood stasis

Iris lactea flowers have the effect of cooling blood and dissipating blood stasis, and have good therapeutic effects on blood heat in humans and adverse symptoms caused by blood heat. During treatment, 60 grams of iris lactea flowers, 30 grams of small thistle root and 9 grams of baicaoshuang can be placed together, added with clear water, decocted, and then taken. Iris lactea flowers can also clear heat and promote diuresis, and also have a very good therapeutic effect on enteritis caused by damp-heat in humans. During treatment, they can be used in combination with Chinese medicinal herbs such as purslane and plantain.