Lettuce in spring mainly uses small and medium sized arch sheds for protective land production. Due to the accumulation of bacterium sources in continuous cropping for many years, sclerotia sclerotia occurs more and more, and attention should be paid to its prevention and control.
Sclerotinia sclerotiorum mainly occurs on stems and leaves, and mainly occurs in the middle and late stages of growth. Usually from the middle of the disease, the initial emergence of water-immersed chlorotic spots on the tip of the leaf, after the disease gradually spread downward, leading to soft rot diseased leaves. Due to the compactness of the leaves in the middle and later stages of lettuce growth, the diseased leaves are placed on the lower leaves after soft rot, allowing the bacteria to spread rapidly. After the germs invade the stem, irregular irregular spots first appear, and then gradually develop into ring stem decay. When the humidity is high, cotton-like mycelium is produced in the diseased part, and the mycelium in the latter stage is interwoven to form irregular sclerotia. Partial application of nitrogen fertilizers, especially quick-acting nitrogen fertilizers, excessive planting density in the shed, poor ventilation and light transmission conditions, and low-lying, poorly-drained fields are heavy.
The prevention and control of Sclerotinia sclerotiorum focus on the following four issues. (1) Put it into the customs before planting. Select land with high topography, easy drainage, and fertile sandy soil. Before sowing or transplanting, mix and disinfect 50% thiophanate-methyl WP and fine soil in a ratio of 1:30. (2) Good prevention during the cultivation process. Covering cultivation with plastic film, the sub-encapsulation disc in the soil is blocked under the plastic film, so that it can not complete the development process; from high ridge cultivation, with soil colonization; timely removal of old leaves and weeds, reduce the spread of pathogens; strengthen fertilizer management, base fertilizer Decomposing organic manure as the main, adding phosphorus and potassium fertilizers, the rational use of nitrogen fertilizer, enhance plant resistance; appropriate density control, planting 6000 per acre is appropriate, in order to facilitate ventilation. (3) After the onset of a good drug control off. The prevention and control of the medicine should be early, and control the use of 50% procymidone wettable powder 1000-1200 times, or 40% pyrimethanil wettable powder 600 times, or 40% sclerotin net wettable powder 800 times. Or 70% thiophanate-methyl WP 800 times spray, once every 5 to 7 days, continuous control of 3 to 4 times. The diseased plants should be removed in a timely manner and brought out of the field to be buried or burned. (4) Keep good residue after harvest. After the harvest, the residual leaves were removed in time, and the soil was deep-frozen for more than 25 cm. The bacteria were buried deep in the soil and the ascidian disks were inhibited from unearthing. Summer use of high temperature sterilization, that is, May to June deep-slung soil 20 to 30 cm, as far as possible to form a vertical ridge when arable land, in the ground evenly spread 2 to 3 cm long wheat straw or straw, and then shallow plough again, level the ground, irrigated with water , and then cover the ground with a layer of old shed film, with soil compaction around, 7 to 10 days after the removal of the film; can also be incorporated in the wheatgrass appropriate amount of lime, not more than 300 kilograms per acre, in order to accelerate wheat grass maturity, Exothermic warming and maintain soil acid-base balance. This method can make the soil temperature of 5 to 10 cm rise to 40 ~ 60 °C, killing the pests in the soil.
Fenbendazole is an organic compound, which is white or almost white powder, odorless and tasteless. This product is soluble in dimethyl sulfoxide, slightly soluble in methanol, insoluble in water, and soluble in glacial acetic acid, with low toxicity. It is a broad-spectrum benzimidazole insect repellent, effective on gastrointestinal parasites. Fenbendazole is a kind of benzimidazole insecticide. It not only has high repellent activity to adult and larva of gastrointestinal nematode, but also has good effect on reticulum, Fasciola and tapeworm. It also has strong egg killing effect.
Fenbendazole is a broad spectrum benzimidazole anthelmintic used against gastrointestinal parasites including roundworms,hookworms, whipworms, the taenia species of tapeworms, pinworms, aelurostrongylus, paragonimiasis, strongylesand strongyloides and can be administered to sheep, cattle,horses, fish, dogs, cats, rabbits and seals.
Note: Don't use with bromsalan flukicides such as dibromsalan and tribromsalan.
Product Name
Wholesale Price Veterinary Medicine Powder 99% Fenbendazole
Appearance
White crystalline powder
Molecular formula
C15H13N3O2S
Assay
99%
Shelf Life
24 months when properly stored
Storage
Keep in a cool, dry, dark location
For sheep:
For cattle:
For horse:
For pig:
For dog & cat:
For wildlife:
Deer and other birds of prey.
Why choose us?
It is efficient for treating imageo and larva of haemonchosis, ostertagia, trichostrongyle, cooperia, nematodirus, trichuris and dictyocaulus. It has good effec in treating moniezia expansa and M.benedeni. It needs large dose for trematode.
The expelling spectra of cattle is almost similar to that of sheep, need large dose for trematode. It has good effect in treating imago of fasciola hepatica and schistosomula of bovine paramphistomum.
It has good effect in treating parascaris equorum, imago and larva of oxyuris equi, Pprobstmayria vivipara, strongylus vulgaris.
It has good expelling parasite effect in treating imago and larva of ascaris suum, hyostrongylus rubidus, and oesophagostomum.
It has obvious effect in treating ancylostoma caninum, trichuris, and roundworm of dog. Also is effect in treating roundworm, hookworm and tapeworm of cat.
Product Recommended
Furazolidone Powder,Levamisole Hydrochloride,Albendazole Powder,Fenbendazole Powder
Xi'an Tian Guangyuan Biotech Co., Ltd. , https://www.tgybiotech.com