Shrinkage disease is a common disease in stone fruit trees, which mainly damages the fresh shoots that just germinated, distorts the diseased swollen fat, shortens the internodes, and clusters diseased leaves. After being damaged, the leaves are crumpled and twisted, thickened and brittle, and initially gray-green to yellow-green, later red, and finally black and fall off. The young fruit showed a plaque-like uplift after being victimized, initially yellow, red, and then brown cracked, resulting in early fall. The pathogen is the outer Ascomycete fungus. The minimum temperature for pathogenic infection is 7-10°C, and the most suitable temperature is 13-17°C. This is the reason that the disease can occur at low temperatures in early spring. If pathogens exceed 30°C, the bacteria cannot develop. The pathogenic bacteria are ascospores and spores on wintering on the scales and branches of the plum. If it is cold and rainy in early spring, it will be conducive to the infection of pathogens, leading to serious disease. Excessive orchard management, poor drainage, inadequate fertilization, and weak tree vigor all contribute to disease. Control methods: 1 Spray pesticides in time to eliminate overwintering pathogens. The orchard that had the disease in the spring and the early fall of plum in the late summer and early autumn were sprayed with 70% thiophanate-methyl wettable powder 1000 times for 1 time. After the fallen leaves, the buds had expanded and had not yet been developed, before all branches were opened. Dry spray 2 - 3 Baume degrees of lime sulfur or 1% equivalent Bordeaux liquid disinfection sterilization 1 time. Meiyuan, which has been seriously affected, must be sprayed and controlled for autumn and winter for 2-3 consecutive years in order to achieve better control effects. 2 remove diseased leaves and leaves. After autumn and winter spraying, if there are still a few diseased leaves appear, they should be removed in time and burned in a concentrated manner. 3 young shoot spraying sterilization. The spring shoot shoots at the shoot stage are combined with the control of fruit scab, anthrax spray 25% urea mildew wettable powder 700-1000 times, or 70% thiophanate-methyl wettable powder 1000 times liquid. 4 to strengthen the cultivation and management. Strengthen management, drain drainage, increase fertilization, and increase tree vigor.
Luteolin, alias carotenoid, carotenol, phytoalexin, riboflavin, marigoldin and phytoalexin, etc., orange-yellow powder. Natural lutein is an excellent antioxidant. Lutein and zeaxanthin are the only 2 carotenoids in the eye, and the prevention of vision loss and blindness caused by age-related retinal macular degeneration is the unique function of lutein.
Natural lutein is an excellent antioxidant, can resist free radicals in the body caused by cell and organ damage, thus can prevent the body aging caused by cardiovascular sclerosis, coronary heart disease and tumor disease.