bordeaux mixture การใช้

• By 1936 experiments with Bordeaux mixture were developed to control the disease.
• The title means " Bordeaux Mixture, " a copper-sulfate spray used to protect vines from diseases.
• Research to control the disease began with Bordeaux mixture experiments around the start of the 20th century.
• The most common recommended is a Bordeaux mixture, which only needs to be applied once every two weeks.
• It is believed the arsenic and copper originated from antiquated pesticide ( Bordeaux mixture ) applied to the grapes.
• As CuSO 4 contains 25 % copper, the copper content of a 1 % Bordeaux mixture would be 0.25 %.
• Originally Bordeaux mixture was used to controlled botrytis bunch rot but the use of synthetic chemicals is now the preferred method.
• Copper and Bordeaux mixture are traditional controls but are less effective than chemical fungicides, and can cause russeting of the fruit.
• One of the most important advances in the control of plant disease was the discovery of Bordeaux mixture in the nineteenth century.
• Around the start of the 20th century Bordeaux mixture was the primary technique for controlling the disease; in the 1940s growers shifted to synthetic chemical use.
• Ionel Lupu ( President, Asociatia Dendro-Ornamentala " Anastasie Fatu Iasi " ) proceeded to treating the lime with Bordeaux mixture, insect repelent and organic soil enrichments.
• In the 1880s, the trials which led to the development of the Bordeaux mixture to combat downy mildew mostly took place in the vineyards of Ch鈚eau Dauzac.
• Synthetic pesticides allowed for use on organic farms include insecticidal soaps and horticultural oils for insect management; and Bordeaux mixture, copper hydroxide and sodium bicarbonate for managing fungi.
• He accomplished this feat by implementing a fungicide consisting of hydrated lime, copper sulfate and water, a mixture that was to become known as the " Bordeaux mixture ".
• Despite the invention of a copper sulfate fungicide known as the " Bordeaux mixture " around 1875, this treatment was not universally used, as the chemistry and ideal method of application were not understood . }}
• Thus a 1 % Bordeaux mixture, which is typical, would have the formula 1 : 1 : 100, with the first " 1 " representing 1 kg CuSO 4 ( pentahydrated ), the second representing 1 kg hydrated lime, and the 100 representing 100 litres ( 100 kg ) water.