Answer: For the prevention and cure of pear scab, we should grasp three critical periods according to the occurrence of scab. The first spraying period is the initial stage of disease buds and diseased leaves or diseased fruit. In the early stage of bud sprouting, spraying urea or ammonium sulfate fertilizer 10-15 times on the tree body and ground can eradicate the overwintering germs. In the initial stage of the buds of germs, the buds can be cut off continuously to prevent the spread of germs. It also has a good effect on the control of Admiralty Sydney Scab. After pears are harvested, spray 1:3:200 times Bordeaux mixture in time to prevent germs and pear leaves from invading. At the same time, it is also necessary to provide nutrients to the trees in a timely manner so as to improve disease resistance. When spraying insecticides, potassium dihydrogen phosphate or urea can be added in 300 times, which not only increases the nutrients of the tree, but also has a good control effect against pear scab.

Lithium Fluoride CAS No.7789-24-4

Lithium Fluoride Basic Information
Product Name: Lithium fluoride
CAS: 7789-24-4
MF: FLi
MW: 25.94
EINECS: 232-152-0
Mol File: 7789-24-4.mol

Lithium Fluoride Chemical Properties
Melting point: 845 °C(lit.)
Boiling point: 1681 °C
Density: 2.64 g/mL at 25 °C(lit.)
Fp: 1680°C
Storage temp. :Store at +5°C to +30°C.
Solubility: Soluble in 0.29 g/100 mL (20°C) and hydrogen fluoride. Insoluble in alcohol.
Form: random crystals
Color: White to off-white
Specific Gravity: 2.635
PH: 6.0-8.5 (25℃, 0.01M in H2O)
Water Solubility: 0.29 g/100 mL (20 ºC)
Sensitive: Hygroscopic

Doped Yttrium Lithium Fluoride,Gadolinium Lithium Fluoride,Ka Of Lithium Fluoride,Lif Lithium Fluoride

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