Symptoms mainly affect the leaves, the lesions are round or nearly round, some are semicircular or irregularly shaped by the veins, size 2-12mm, early light brown, slightly brown or purple-brown in the middle, with concentric ring . The disease department has black spots, which are pathogenic conidia. Severe disease leaves dead.
The pathogenic Ascochyta molleriana Wint. is called Aspergillus flavus, a fungus belonging to the subphylum Fungi. The conidiophores are spherical to oblate spheroids, with foliar appearance, initial burial, and break through of the epidermis. The wall is light brown and membranous in size 80-135 μm. The conidia are colorless, transparent, cylindrical, straight or slightly curved, and the two ends are more rounded, with a membrane, and the membrane is slightly cabled or not, and the size 6 is l02-3 (μm).
Transmission Pathways and Pathogenic Conditions The pathogenic bacteria in the soil were contaminated with contaminants in the soil, and conidia were produced in the following year for initial infection and reinfestation. The disease occurs earlier than spotting disease. It usually begins in early May and enters the onset of disease in June. It gradually decreases after mid-July.
Prevention and control methods (1) Land rehmannia shall be cleaned in time after harvesting, and the sick and damaged bodies shall be burned or buried deeply. (2) Increase the application of phosphorus and potassium fertilizers. Drain the drains after the rain to prevent moisture retention and pay attention to the removal of diseased leaves. (3) Begin spraying 70% mancozeb WP 500 times or 75% chlorothalonil wettable powder 600-700 times every 7-10 days for 2-3 times.
Features:
- Fast and effective heat up, even on cold days- Temperature set at 175 F
- Melt-Proof inner liner (with heat sensitive dye to show mis-use or mal-function)
- Operating Light- RED shows when heating and GREEN when full temp is reached
- Dupont Nomex/Kevlar Insulation to keep the heat in and set Hot Pressures- Heat the entire carcass deep down
- Built Tough - Codura Exterior & high impact temperature controllers, full coverage Heating Elements
- Built and serviced in house
- Includes a nylon carry bag
- Can be used with all compound race tires
- Sold in sets of two
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Tire Warmer, Tyre Warmers, Numerical Control Tyre Warmer, Standard Tyre Warmer
Ningbo JustLive Electrical Appliance Co., Ltd , https://www.makeheat.net