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Potassium bicarbonate has widespread use in crops, especially for neutralizing acidic soil. [11]Potassium bicarbonate is an effective fungicide against powdery mildew and apple scab, allowed for use in organic farming.
The most effective non-conventional methods of chemical control against powdery mildew are milk, natural sulfur (S 8 >), potassium bicarbonate, metal salts, and oils. [12] Powdery mildew on a maple leaf as seen under a scanning electron microscope. Metal salt fungicides should be applied on a regular basis up until harvest of the host. [12]
This is a list of fungicides. These are chemical compounds which have been registered as agricultural fungicides . The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [ 1 ]
Potassium metabisulfite, K 2 S 2 O 5, also known as potassium pyrosulfite, is a white crystalline powder with a pungent odour. It is mainly used as an antioxidant or chemical sterilant . [ 1 ] As a disulfite , it is chemically very similar to sodium metabisulfite , with which it is sometimes used interchangeably.
The fungicides are applied at the end of the harvest and chlorothalonil has been shown in experiments to reduce purple spot by 99% and increase yields by 36%. [33] This increase in yield as a result of purple spot control has been shown to translate into a net return of $200–400 per acre for asparagus growers .
Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight.The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato.
These measures use the natural environment to enhance agricultural productivity: legumes are planted to fix nitrogen into the soil, natural insect predators are encouraged, crops are rotated to confuse pests and renew soil, and natural materials such as potassium bicarbonate [48] and mulches are used to control disease and weeds.
Monopotassium phosphite is an inorganic compound with the formula KH 2 PO 3.A compositionally related compound has the formula H 3 PO 3. 2(KH 2 PO 3).Both are white solids that consist of salts of the phosphite anion H 2 PO 3 −, the conjugate base of phosphorous acid.
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