The law of incidence
The germs survived and survived for years in the diseased skin. The disease in the middle and western regions of Heilongjiang Province focuses on the onset of the spring and autumn seasons. May to June is the peak period of disease, and onset is slow during the late summer of July to August. The second peak of the disease occurred from early to late September to mid-September, but was lighter than spring and stopped developing in late September. Conidia were formed from late April to early September, with the highest amount occurring from mid-May to late June. The conidial horns are more in the rain or in wet weather. After the spores are opened by rain, the spores can spread by wind, rain, insects, and birds, and invade from the dead skin. The growth temperature of the bacteria is 4 to 35°C and 25°C is the most suitable. Ascospores form from late June to early September and reach the peak in mid-July. From mid-July to mid-August, the spores began to bloom and spread by the wind.
Integrated control technology
1. Quarantine of seedlings: The phytosanitary clearance of good afforestation nursery stocks should be avoided. Afforestation with diseased seedlings should not be used, and seedlings should not be transferred from nursery plots with pathogens.
2, forestry prevention and control:
(1) Breeding of disease-resistant tree species Seedlings and afforestation should be suitable for local growth in the selection of anti-freezing, anti-sunburn, and disease-resistant poplar species through practical tests. Do not blindly promote a poplar tree to avoid unnecessary losses.
(2) Disinfection of cuttings Before cuttings, cuttings were soaked with 0.3% potassium permanganate or 1% formalin solution and then cut.
(3) Improving the quality of afforestation. Minimize the storage time of seedlings and minimize root damage when raising seedlings. It should be done on the same day as seedlings on the same day to prevent loss of water and affect seedlings. Plant a tree to reach a sufficient width and depth, fill a pit of fresh soil when planting, in order to ensure that the root surface of the roots and the soil close contact. Filling should be stepped on to prevent overhanging roots from affecting seedlings and growth.
(4) When the saplings of poplar trees in Pingshuo New Plantation and 2a are in progress, it is recommended to adopt measures for ploughing and cut off the diseased plants to make them germinate again and then implement prevention and treatment.
(5) To build a large area of ​​mixed forests of poplar forests, setting a hedgehog or eucalyptus forest at regular intervals (around 200-400m), which has the effect of preventing the spread of germs. A small piece of poplar forest can also be set in isolation around the forest belt. After forestation, it is necessary to improve the sanitation condition of forest stands and clear the weak branches. Severe diseased plants should be promptly removed to reduce the source of infection. Windbreaks should be designed to create a semi-ventilated structure with small shrubs on the windward side.
(6) Reasonable pruning and pruning should be carried out in the winter to avoid pruning in the rainy season. Do not leave stumps.
(7) The greening and highway forests in the trunk of Baicheng Township shall be painted white in the winter to prevent freezing and sunburn. Whitening agent formulations for quicklime 15kg, sulfur powder or fungicide fungicide 0.5 ~ 1kg, water 40kg, and add appropriate amount of cellulose and salt to increase adhesion.
3, chemical prevention
(1) Dry the skin in May and early September. Use a knife to pierce the lesions of the diseased plants, scrape off the diseased cortical tissue, and scrape to the junction between the lesion and the healthy area. Then choose one of the following substances: Apply: pine tar diesel (1:1), asphalt, 3 ~ 50Be's lime sulfur, no phenol washing oil. After 5 to 7 days of application, 50-100 ppm gibberellin was applied to the wound to facilitate wound healing. Can also be coated around the lesion fodine naphthalene solution (40% of the 50 times the United States 50 mg / L naphthalene acetic acid 50 mg / L), can significantly improve the speed of healing around the diseased tissue, reduce the recurrence rate, and further improve the control effect.
(2) Drying can be used in May and early September to use 10% double-effect water repellent 10 times, 70% thiophanate wettable powder 100 times, 30% Formamide arsenic wettable powder 100 times, 50% more Diflubenzuron WP 25 times, 2% 843 Rehabilitant Emulsion 3 times, 50% Copper Succinate (a copper frost) WP 10 times, 10% Alkaline, 1% Bordeaux Any one, spray dry once every 10d or so. A 10% double effector 10 times solution is the preferred agent.
Organic milk thistle extract is a powder extracted from the seed of milk thistle seed. Its major active content is Silymarin. Our organic farm base of Milk Thistle is mainly in Liaoning Province, China. We extract silymarin in an absolutely organic way and retain its nutrients. Milk thistle has the efficacy of liver-protecting, improving the function of the liver, promotes biliation, and diminishing liver inflammation. Silymarin nourishes the liver like no other nutrient currently known. The liver acts as the body`s filter constantly cleansing to protect you from toxins. Over time, these toxins can accumulate in the liver. Milk Thistle`s potent antioxidant properties and rejuvenating actions help keep the liver strong & healthy.
Milk Thistle Extract,Organic Milk Thistle Extract,Milk Thistle,Milk Thistle Powder
Organicway (xi'an) Food Ingredients Inc. , https://www.organicwayinc.com